Allow "configure" to work, haha.

There may be other parts of the code that rely on this.

.gitignore

@@ -16,6 +16,7 @@ man/remind.1
 man/tkremind.1
 pm_to_blib
 rem2html/Makefile
+rem2html/rem2html
 rem2html/rem2html.1
 rem2pdf/Makefile.PL
 rem2pdf/Makefile.old

.gitlab-ci.yml

@@ -1,3 +1,8 @@
+workflow:
+  rules:
+    - if: $CI_COMMIT_BRANCH =~ /wip/
+      when: never
+
 tests:
   image: 'debian:stable-slim'
   before_script:

COPYRIGHT

@@ -3,7 +3,7 @@ THE REMIND COPYRIGHT
 1. REMIND refers to the entire set of files and documentation in the
 REMIND package.
 
-2. REMIND is Copyright 1992-2023 Dianne Skoll, except where noted in
+2. REMIND is Copyright 1992-2024 Dianne Skoll, except where noted in
 individual files.
 
 3. DISTRIBUTION AND USE
@@ -16,7 +16,7 @@ individual files.
 		       Version 2, June 1991
 
  Copyright (C) 1989, 1991 Free Software Foundation, Inc.
-                          675 Mass Ave, Cambridge, MA 02139, USA
+ 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 

MICROSOFT-AND-APPLE

@@ -1,30 +0,0 @@
-MICROSOFT WINDOWS
-=================
-
-I used to prohibit porting Remind to Microsoft Windows.  However, this
-may cause problems with the GPL, so I have removed that restriction.
-
-Although I cannot prevent you from porting Remind to Windows, I appeal
-to you not to do it.  I am trying to encourage the growth of free
-software, not proprietary software.
-
-If you port Remind to Windows, I will not provide support or answers to
-questions -- you're on your own.  On the other hand, I will feel no guilt
-in taking enhancements and merging them into the UNIX stream.
-
-APPLE
-=====
-
-I can't prevent you from using Remind on Apple's products, but I hope
-you don't.  Apple's corporate culture is the very antithesis of Free
-Software.  Rather than using Mac OS X, I encourage you to switch to
-Linux or FreeBSD, two Free Software operating systems that are every
-bit as capable as Mac OS X and which are unencumbered by Apple's
-arbitrary restrictions.
-
-And if you're looking to port Remind to other Apple products like the
-iPhone or iPad, please don't.  Those products enforce Apple's rigorous
-controls much more stringently than Mac OS X on an Apple PC.
-
---
-Dianne Skoll

Makefile

@@ -44,7 +44,7 @@ test:
 	@$(MAKE) -C src -s test
 
 distclean: clean
-	rm -f config.cache config.log config.status src/Makefile src/config.h tests/test.out www/Makefile rem2pdf/Makefile.top rem2pdf/Makefile.old rem2pdf/Makefile rem2pdf/Makefile.PL rem2pdf/bin/rem2pdf
+	rm -f config.cache config.log config.status src/Makefile src/config.h tests/test.out www/Makefile rem2pdf/Makefile.top rem2pdf/Makefile.old rem2pdf/Makefile rem2pdf/Makefile.PL rem2pdf/bin/rem2pdf rem2html/rem2html
 
 src/Makefile: src/Makefile.in
 	./configure

build.tk

@@ -15,6 +15,8 @@
 # the next line restarts using wish \
 exec wish "$0" "$@"
 
+global RemindExecutable
+
 #***********************************************************************
 # %PROCEDURE: SetConfigDefaults
 # %ARGUMENTS:
@@ -27,10 +29,10 @@ exec wish "$0" "$@"
 proc SetConfigDefaults {} {
     global Config
     set Config(LAT_DEG) 45
-    set Config(LAT_MIN) 24
+    set Config(LAT_MIN) 25
     set Config(LAT_SEC) 14
     set Config(LON_DEG) 75
-    set Config(LON_MIN) 39
+    set Config(LON_MIN) 41
     set Config(LON_SEC) 23
     set Config(LOCATION) "Ottawa"
     set Config(DEFAULT_PAGE) "Letter"
@@ -40,7 +42,7 @@ proc SetConfigDefaults {} {
     set Config(WESTERN_HEMISPHERE) 1
     set Config(LANGUAGE) "English"
     set Config(INST_DIR) "/usr/local/bin"
-    set Config(MAN_DIR) "/usr/local/man"
+    set Config(MAN_DIR) "/usr/local/share/man"
 }
 
 #***********************************************************************
@@ -53,7 +55,7 @@ proc SetConfigDefaults {} {
 #  Pops up an error dialog; then calls exit.
 #***********************************************************************
 proc Bail { msg } {
-    tk_dialog .err "Remind Configuration Error" $msg error 0 "Bummer"
+    tk_messageBox -message "Remind Build Error" -detail $msg -icon error -type ok
     exit 1
 }
 
@@ -124,7 +126,7 @@ proc CreateMainDialog {} {
 #  Creates the "installation directories" dialog.
 #***********************************************************************
 proc CreateInstallDirDialog { w } {
-    global Config
+    global Config RemindExecutable
     label $w.binlabel -text "Location for programs: "
     entry $w.bin -width 30
     $w.bin insert end $Config(INST_DIR)
@@ -133,16 +135,19 @@ proc CreateInstallDirDialog { w } {
     entry $w.man -width 30
     $w.man insert end $Config(MAN_DIR)
 
-    text $w.blurb -width 1 -height 5 -wrap word -relief flat -takefocus 0
-    $w.blurb insert end "\n(Tabbed-notebook Tcl code taken from \"Effective Tcl/Tk Programming\" by Mark Harrison and Michael McLennan, Addison-Wesley Professional Computing Series.)"
-    $w.blurb configure -state disabled
-    # Disable all text-window behaviour
-    bindtags $w.blurb {NoSuchTag}
+    text $w.blurb -width 1 -height 20 -wrap word -relief flat -takefocus 0
+    if { "$RemindExecutable" != "" } {
+        $w.blurb insert end "Note: Default settings were obtained by querying the existing installed version of Remind found at: $RemindExecutable\n"
+    }
+    $w.blurb insert end "\n(Tabbed-notebook Tcl code taken from \"Effective Tcl/Tk Programming\" by Mark Harrison and Michael McLennan, Addison-Wesley Professional Computing Series.)\n"
     grid $w.binlabel -row 0 -column 0 -sticky e
     grid $w.bin -row 0 -column 1 -sticky nsew
     grid $w.manlabel -row 1 -column 0 -sticky e
     grid $w.man -row 1 -column 1 -sticky nsew
     grid $w.blurb - -sticky nsew
+    # Disable all text-window behaviour
+    bindtags $w.blurb {NoSuchTag}
+    $w.blurb configure -state disabled
 }
 
 #***********************************************************************
@@ -190,8 +195,8 @@ proc CreateLocationDialog { w } {
 
     grid $w.north $w.west
     grid $w.south $w.east
-    grid $w.loclab -sticky e 
-    grid $w.location -sticky nsew -row 6 -column 1
+    grid $w.loclab -sticky e
+    grid $w.location -sticky nsew -row 8 -column 1
 }
 
 #***********************************************************************
@@ -293,9 +298,9 @@ proc BuildRemind {} {
 
     .msgs insert end "\n>>> Creating src/custom.h...\n\n" green
     CreateCustomH
-    .msgs insert end ">>> Calling `./configure'...\n\n" green
+    .msgs insert end "\n>>> Calling `./configure'...\n\n" green
     CallConfigure
-    .msgs insert end ">>> Calling `make'...\n\n" green
+    .msgs insert end "\n>>> Calling `make'...\n\n" green
     CallMake
     .msgs insert end "\n----------------------------------------------\n\n"
     .msgs insert end "Remind" red
@@ -447,12 +452,12 @@ proc CreateCustomH {} {
 	    "#define DEFAULT_LATITUDE *" {
                 set lat [expr $LAT_DEG + ($LAT_MIN/60.0) + ($LAT_SEC/3600.0)];
 		puts $out "#define DEFAULT_LATITUDE $lat"
-		.msgs insert end "#define DEFAULT_LATITUDE $lat"
+		.msgs insert end "#define DEFAULT_LATITUDE $lat\n"
 	    }
 	    "#define DEFAULT_LONGITUDE *" {
                 set lon [expr -1.0 * ($LON_DEG + ($LON_MIN/60.0) + ($LON_SEC/3600.0))]
 		puts $out "#define DEFAULT_LONGITUDE $lon"
-		.msgs insert end "#define DEFAULT_LONGITUDE $lon"
+		.msgs insert end "#define DEFAULT_LONGITUDE $lon\n"
 	    }
 	    "#define LOCATION *" {
 		puts $out "#define LOCATION \"$Config(LOCATION)\""
@@ -506,7 +511,13 @@ proc CallMake {} {
 	"Icelandic"            { set lang ICELANDIC }
 	default                { set lang ENGLISH }
     }
-    RunCommand "make \"LANGDEF=-DLANG=$lang\""
+    set nproc 0
+    catch { set nproc [exec nproc] }
+    if { $nproc != 0 } {
+        RunCommand "make -j $nproc \"LANGDEF=-DLANG=$lang\""
+    } else {
+        RunCommand "make \"LANGDEF=-DLANG=$lang\""
+    }
 }
 
 
@@ -721,7 +732,7 @@ proc notebook_fix_size {win} {
 #***********************************************************************
 proc FindRemind {} {
     global env
-    set path [concat [split $env(PATH) ":"] "/bin" "/usr/bin" "/usr/local/bin"]
+    set path [concat [split $env(PATH) ":"] "/usr/local/bin" "/bin" "/usr/bin" ]
     foreach thing $path {
 	if [file executable [file join $thing "remind"]] {
 	    return [file join $thing "remind"]
@@ -739,16 +750,17 @@ proc FindRemind {} {
 #  sensible defaults.
 #***********************************************************************
 proc SetConfigFromRemind {} {
-    global Config
+    global Config RemindExecutable
     SetConfigDefaults
     set rem [FindRemind]
+    set RemindExecutable $rem
     if {"$rem" == ""} {
 	return
     }
     set dir [file dirname $rem]
     set Config(INST_DIR) $dir
     if {"$dir" == "/usr/local/bin"} {
-	set Config(MAN_DIR) "/usr/local/man"
+	set Config(MAN_DIR) "/usr/local/share/man"
     } elseif {$dir == "/usr/bin"} {
 	set Config(MAN_DIR) "/usr/share/man"
     }
@@ -758,6 +770,8 @@ proc SetConfigFromRemind {} {
 	set Config(MAN_DIR) "/usr/share/man"
     } elseif {[file readable "/usr/man/man1/remind.1"]} {
 	set Config(MAN_DIR) "/usr/man"
+    } elseif {[file readable "/usr/local/share/man/man1/remind.1"]} {
+	set Config(MAN_DIR) "/usr/local/share/man"
     } elseif {[file readable "/usr/local/man/man1/remind.1"]} {
 	set Config(MAN_DIR) "/usr/local/man"
     }

configure.in

@@ -1,6 +1,7 @@
 dnl Process this file with autoconf to produce a configure script.
 
-AC_INIT(src/queue.c)
+AC_INIT(remind, 05.00.00, , , https://dianne.skoll.ca/projects/remind/)
+AC_CONFIG_SRCDIR([src/queue.c])
 
 cat <<'EOF'
 
@@ -12,7 +13,7 @@ cat <<'EOF'
 
 EOF
 
-AC_CONFIG_HEADER(src/config.h)
+AC_CONFIG_HEADERS([src/config.h])
 
 AC_ARG_ENABLE(perl-build-artifacts,
 [  --disable-perl-build-artifacts
@@ -29,32 +30,30 @@ AC_PATH_PROG([PERL], [perl])
 
 dnl Checks for libraries.
 AC_CHECK_LIB(m, sqrt)
+AC_CHECK_HEADERS_ONCE([sys/time.h stdint.h])
 
 dnl Integer sizes
 AC_CHECK_SIZEOF(unsigned int)
 AC_CHECK_SIZEOF(unsigned long)
+AC_CHECK_SIZEOF(time_t)
 
 dnl Checks for header files.
-AC_CHECK_HEADERS(sys/types.h sys/file.h glob.h wctype.h locale.h langinfo.h)
+AC_CHECK_HEADERS(strings.h sys/types.h glob.h wctype.h locale.h langinfo.h sys/inotify.h)
 
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_STRUCT_TM
 
-dnl Checks for library functions.
-AC_FUNC_UTIME_NULL
-AC_HEADER_TIME
-
 if test "$GCC" = yes; then
 	CFLAGS="$CFLAGS -Wall -Wextra -Wstrict-prototypes"
         # Check for link-time optimization support
         f=-flto=auto
         AC_MSG_CHECKING([whether $CC supports $f])
-        if $CC -E $f /dev/null > /dev/null 2>&1 ; then
+        if $CC -Werror -E $f - < /dev/null > /dev/null 2>&1 ; then
             AC_MSG_RESULT([yes])
             CFLAGS="$CFLAGS $f"
             f=-ffat-lto-objects
             AC_MSG_CHECKING([whether $CC supports $f])
-            if $CC -E $f /dev/null > /dev/null 2>&1 ; then
+            if $CC -Werror -E $f - < /dev/null > /dev/null 2>&1 ; then
                 AC_MSG_RESULT([yes])
                 CFLAGS="$CFLAGS $f"
             else
@@ -65,6 +64,12 @@ if test "$GCC" = yes; then
         fi
 fi
 
+dnl If sizeof(time_t) is 4, try to get 64-bit time_t
+if test "$ac_cv_sizeof_time_t" = "4" ; then
+    AC_MSG_NOTICE([time_t is 32-bits on this system; attempting to use 64-bit time_t])
+    CFLAGS="$CFLAGS -D_TIME_BITS=64 -D_FILE_OFFSET_BITS=64"
+fi
+
 if test "$ac_cv_perlartifacts" = "yes" ; then
     PERLARTIFACTS=
 else
@@ -79,11 +84,13 @@ if test "$?" != 0 ; then
     echo "*** COULD NOT DETERMINE RELEASE DATE: docs/WHATSNEW is incorrect!"
     exit 1
 fi
-AC_CHECK_FUNCS(setenv unsetenv glob mbstowcs setlocale initgroups)
-VERSION=04.02.04
+AC_CHECK_FUNCS(strdup strcasecmp strncasecmp setenv unsetenv glob mbstowcs setlocale initgroups inotify_init1)
+
+VERSION=$PACKAGE_VERSION
 AC_SUBST(VERSION)
 AC_SUBST(PERL)
 AC_SUBST(PERLARTIFACTS)
 AC_SUBST(RELEASE_DATE)
-AC_OUTPUT(src/Makefile www/Makefile src/version.h rem2html/Makefile rem2pdf/Makefile.PL rem2pdf/Makefile.top rem2pdf/bin/rem2pdf man/rem.1 man/rem2ps.1 man/remind.1 man/tkremind.1)
+AC_CONFIG_FILES([src/Makefile www/Makefile src/version.h rem2html/Makefile rem2html/rem2html rem2pdf/Makefile.PL rem2pdf/Makefile.top rem2pdf/bin/rem2pdf man/rem.1 man/rem2ps.1 man/remind.1 man/tkremind.1])
+AC_OUTPUT
 chmod a+x rem2pdf/bin/rem2pdf

contrib/remind-conf-mode/remind-conf-mode.el

@@ -19,8 +19,7 @@
 
 ;; You should have received a copy of the GNU General Public License
 ;; along with this program; if not, write to the Free Software
-;; Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-;; 02111-1307, USA.
+;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA
 
 ;;; Commentary:
 
@@ -514,6 +513,7 @@ Acts on the region or places point where it needs to be."
   (set (make-local-variable 'comment-start) ";")
   (set (make-local-variable 'comment-start) "#")
   (set (make-local-variable 'comment-end) "\n")
+  (set (make-local-variable 'comment-end-skip) "[ \t]*\\(\\s>\\||#\\)")
   (set (make-local-variable 'skeleton-end-hook) nil) ; so the skeletons will not automatically go to a new line.
   (set (make-local-variable 'fill-column) '100);cause I was having problems with autofill.
   (set (make-local-variable 'indent-line-function) 'remind-indent-line)

docs/README.UNIX

@@ -95,7 +95,7 @@ Norman Walsh.
 #!/usr/local/bin/wish
 wm withdraw .
 after 15000 { destroy . ; exit }
-tk_dialog .d { Message } $argv warning 0 { OK }
+tk_messageBox -message Message -detail $argv -icon info -type ok
 destroy .
 exit
 -------------- Cut Here ---------- Cut Here ---------- Cut Here -------------

docs/WHATSNEW

@@ -1,5 +1,380 @@
 CHANGES TO REMIND
 
+* VERSION 5.0 Patch 0 - 2024-??-??
+
+* MAJOR CHANGE: The expression evaluation engine has been completely replaced
+  with a new one that splits parsing and evaluating into two separate steps.
+  It also features short-circuit evaluation of &&, ||, iif() and choose().
+  This should speed up expression-heavy reminder files.
+
+  NOTE INCOMPATIBILITY: In expressions with side-effects, the short-circuit
+  evaluation might change the result you get.  For example, consider
+  running the following file through: remind file.rem 2024-06-04
+
+    SET a trig("Mon +7") || trig("Thu +7")
+    MSG trig = [trig()]
+
+  Older Remind versions will output:
+
+    trig = 2024-06-06
+
+  whereas this version outputs:
+
+    trig = 2024-06-10
+
+  because the second part of the "||" expression is not evaluated.  The vast
+  majority of Remind expressions do not have side-effects and should yield
+  the same results as before.
+
+  The newer expression engine also permits recursive functions, but
+  these are not recommended.  Still, if you want to, you can do:
+
+    fset factorial(n) iif(n <= 1, 1, n*factorial(n-1))
+
+  and it will work for values of n that don't cause integer overflow.
+
+* NEW FEATURE: Add EXPR OFF command to completely disable expression
+  evaluation.  Useful if you INCLUDE files that you don't expect to
+  contain expressions and may come from slightly untrustworthy sources.
+
+* NEW FEATURE: Add $ExpressionTimeLimit system variable to enforce a
+  maximum limit on how long evaluating an expression is allowed to take.
+
+* NEW FEATURE: Add --max-execution-time=n command-line option to terminate
+  Remind if it runs for more than n seconds.
+
+* CHANGE: Make the command-line option "-ifoo" equivalent to "-ifoo=0"
+
+* CHANGE: Permit a literal [ in a reminder by using the sequence [[
+  The old ["["] still works.
+
+* BUG FIX: In "purge" mode, Remind would sometimes purge reminders with
+  a relative "SCANFROM" which haven't actually expired.  This has been fixed.
+
+* BUG FIX: Disallow something like: FSET func(x, x) expr
+  which shouldn't have been allowed in the first place.
+
+* BUG FIX: Replace leading spaces with tabs in Makefiles (per Emanuele Torre
+  and Tim Chase)
+
+* VERSION 4.3 Patch 7 - 2024-04-29
+
+* IMPROVEMENT: build.tk: Add a note if build.tk obtains default settings
+  from an existing Remind installation.
+
+* IMPROVEMENT: configure: Pass all args to AC_INIT including the Remind
+  home page.  Remove some unused autoconf cruft.
+
+* IMPROVEMENT: Use standard C library versions of strdup, strcasecmp and
+  strncasecmp where available, rather than using our own versions.
+
+* MINOR FEATURE: remind: Make $Tt a synonym for trigtime().
+
+* BUG FIX: remind: Make sure shellescape() doesn't mangle UTF-8 characters
+  with high-bits set.
+
+* BUG FIX: remind: Don't rely on undefined behavior of "%" operator in
+  the ord() built-in function.
+
+* BUG FIX: remind: Do not clear out trigtime() unnecessarily.  Before,
+  you could not write things like the following; now you can:
+
+      REM Tue AT 11:30 DURATION 0:30 MSG Thing 1
+      REM Tue AT [trigtime()+trigduration()] DURATION 1:00 MSG Thing 2
+      REM Tue AT [trigtime()+trigduration()] DURATION 0:45 MSG Thing 3
+
+  for successive reminders that should be moved as a block if the time of
+  the first one changes.
+
+* BUG FIX: Don't update trigdate() or trigtime() while parsing a REM
+  statement... only when actually computing the trigger.
+
+* VERSION 4.3 Patch 6 - 2024-04-02
+
+* NEW FILE: Add [$SysInclude]/holidays/pt.rem - Portuguese holidays, courtesy
+  of Joop Kiefte.
+
+* BUG FIX: remind: Fix compile error on systems that don't support inotify(7).
+
+* BUG FIX: remind: Fix test failures on FreeBSD.  On FreeBSD, you have to copy
+  the result of getenv() or else a subsequent setenv() can change the stored
+  value.
+
+* VERSION 4.3 Patch 5 - 2024-04-01
+
+* IMPROVEMENT: remind: Use inotify to detect reminder file changes
+  even in regular daemon mode (-zn where n>0).
+
+* INTERNAL IMPROVEMENTS: Rearrange and refactor some code.
+
+* FIXES: Various fixes and improvements to man pages.
+
+* BUG FIX: remind: Handle queued "SPECIAL COLOR" reminders correctly.
+
+* BUG FIX: remind: Preserve the value of $DefaultColor that was in effect
+  when a reminder was queued; restore it before issuing the queued reminder.
+
+* VERSION 4.3 Patch 4 - 2024-03-25
+
+* NEW FEATURE: remind: Add the new "multitrig" function, which is how "trig"
+  should have worked in the first place.  See man page for details.
+
+* IMPROVEMENT: tkremind: Make errors in your reminders file stand out more
+  prominently.
+
+* IMPROVEMENT: tkremind: If you click on an error in the "Errors..." popup,
+  tkremind will open a text editor on the offending file and line.
+
+* IMPROVEMENT: tkremind: Format the "Queue..." output better and make queue
+  items clickable; clicking on a queue item opens a text editor on the
+  corresponding file and line.
+
+* IMPROVEMENT: Add a standard [$SysInclude]/moonphases.rem file to display
+  moon phases on your calendar.
+
+* IMPROVEMENT: Clean up the demo code in www/ and add PDF output.
+
+* BUG FIX: tkremind: Correctly handle filenames containing spaces and other
+  characters that tend to confuse the shell.
+
+* BUG FIX: tkremind: Raise dialog boxes after errors so that they
+  remain visible.
+
+* CLEANUP: tkremind: Remove some dead code.
+
+* VERSION 4.3 Patch 3 - 2024-03-18
+
+* IMPROVEMENT: tkremind: Update icon to include a white border so it shows
+  up better on dark backgrounds.
+
+* IMPROVEMENT: C code: Fix a number of cppcheck static-analysis warnings.
+
+* IMPROVEMENT: remind: Update the "-zj" protocol to include a queue-id for
+  each queued reminder and add the DEL client command to delete a specific
+  item from the queue.  Used by tkremind to implement "don't remind me about
+  this again today."
+
+* MINOR NEW FEATURE: Add a "-ds" debugging flag to print out expression-parsing
+  stack high-water marks on exit.  This esoteric feature is of no use to
+  anyone but the Remind author.
+
+* IMPROVEMENT: tkremind: Stop using the deprecated tk_dialog command in favor
+  of the newer tk_messageBox command.
+
+* IMPROVEMENT: remind: In server mode, try to minimize redraws by
+  consuming inotify events until at least 0.2s elapses without an
+  event appearing.
+
+* BUG FIX: tkremind:  The "Don't remind me about this again today" feature
+  was unreliable and only worked for reminders created with TkRemind itself.
+  It has been made more reliable and works with any reminder.
+
+* BUG FIX: remind: Make it a syntax error if a local OMIT in a REM statement
+  is not followed by at least one weekday name.
+
+* VERSION 4.3 Patch 2 - 2024-03-01
+
+- BUG FIX: remind: Fix a logic error when implementing the RUN command in
+  server mode.  As it turns out, the error is harmless, but it's best to do
+  things correctly.
+
+- BUG FIX: The Makefile would install the tkremind.png and tkremind.desktop
+  files in the wrong location.  This has been fixed.
+
+* VERSION 4.3 Patch 1 - 2024-02-29
+
+- BUG FIX: tests:  "make test" could fail because of a bad test.  This
+  has been fixed.  There are no actual code changes to any of the programs
+  in Remind compared to 04.03.00.
+
+* VERSION 4.3 Patch 0 - 2024-02-29
+
+- IMPROVEMENT: remind: If Remind is compiled on a system that supports
+  inotify, then in server mode (-z0 or -zj) it monitors the reminders file
+  and restarts itself if it detects a change, and also notifies the client.
+  Moving inotify support directly into Remind means that tkremind no longer
+  has to invoke a separate inotifywait process.
+
+- IMPROVEMENT: remind: Set the CLOEXEC flag on files we open so we
+  don't leak file descriptors to programs that we run.  While I don't
+  think there's a security issue here (any program you run can do
+  anything as your userid anyway) it's best to be clean and tidy.
+
+- IMPROVEMENT: remind: Add localization for the Catalan language, courtesy
+  of Eloi Torrents.
+
+- IMPROVEMENT: tkremind: Add a .desktop file and icon so TkRemind can be
+  integrated into the desktop menu system, courtesy of Eloi Torrents.
+
+- CHANGE: Add a new server mode with the "-zj" flag.  This is just
+  like "-z0" except it uses JSON messages to communicate with the
+  client rather than an ad-hoc protocol.  The "-z0" mode is still
+  supported, but is deprecated.
+
+- CHANGE: In server mode (-z0 or -zj) any RUN-type reminders, or message
+  commands of the "-kcommand" type are run with standard input and standard
+  output connected to /dev/null.  NOTE INCOMPATIBILITY: If you previously
+  relied on RUN-type reminders to pop up reminders in TkRemind, they no
+  longer do.  If you want this, you'll have to get the command that you
+  run to pop up its own window with "xmessage" or something similar.
+
+- IMPROVEMENT: tkremind: Make the "Go to date..." dialog non-modal.
+
+- CHANGE: remind: Allow the argument to easterdate() and
+  orthodoxeaster() to be omitted, in which case it defaults to
+  today().
+
+- BUG FIX: Miscellaneous man page fixes.
+
+- BUG FIX: Fix a leap-year edge-case.  The reminder: REM 29 MSG whatever
+  was not triggered on Feb 29 of leap years.
+
+- BUG FIX: rem2html: Make the version of rem2html track the version of
+  Remind.  Noted by Ian! D. Allen.
+
+* VERSION 4.2 Patch 9 - 2024-02-04
+
+- CHANGE: remind: Do not attempt to guess terminal background color on
+  startup.  Only obtain it as needed.  This can prevent mojibake from
+  appearing on terminals that don't support the color query escape
+  sequence.
+
+- IMPROVEMENT: remind: Add new system variables $NumFullOmits,
+  $MaxFullOmits, $NumPartialOmits and $MaxPartialOmits.
+
+- IMPROVEMENT: remind: Issue a warning if someone OMITs every possible date.
+
+- IMPROVEMENT: remind: In several error messages complaining about limits
+  being exceeded, include the actual limit in the error message.  Clarify
+  the man page regarding limits on the number of OMITs.
+
+- MINOR NEW FEATURE: remind:  The expression STRING * INT or INT * STRING
+  is now accepted and yields a string that is INT concatenations of the
+  original STRING.  In this case, INT must be non-negative and the total
+  string length can't exceed $MaxStringLen.
+
+- DOCUMENTATION: Add "Astronomical Algorithms" by Jean Meeus to bibliography.
+
+- DOCUMENTATION FIX: Update address of the Free Software Foundation in the
+  license file.
+
+- DOCUMENTATION: Note that rem2ps is deprecated and will not received any
+  new features.  Further development will happen on rem2pdf.
+
+- BUG FIX: Preserve the filename() and priority context for queued reminders.
+  Previously, the filename information was lost and the priority was
+  coming from uninitialized memory (yikes!).  bug found by Alexander
+  Möller.
+
+- BUG FIX: build.tk: Various minor improvements.
+
+- BUG FIX: remind: In server mode, if we de-queue a reminder without
+  triggering it, issue a "NOTE queued %d" message to update the
+  client's notion of the queue size.
+
+- BUG FIX: tkremind: Fix typo found by Lorenzo Bazzanini.
+
+* VERSION 4.2 Patch 8 - 2023-12-14
+
+- NEW FEATURE: Add the $MaxLateMinutes system variable.  This suppresses
+  a queued time reminder if the current time is more than $MaxLateMinutes
+  past the trigger time.  (This typically only occurs if the computer
+  has been suspended/hibernated and then resumed.)
+
+- IMPROVEMENT: tkremind: If an error occurs during printing, catch it
+  and change the Queue... button to Errors... (the same way errors in
+  reminder files are handled.)
+
+- IMPROVEMENT: rem2html: add the --utf8 flag to set the HTML charset to
+  UTF-8.
+
+- MINOR IMPROVEMENTS: Refactor some of the C code; use symbolic exit
+  statuses and file descriptors for stdin/stdout/stderr where possible.
+
+- BUG FIX: configure.in: Use better option detection so we don't use the
+  unsupported option -ffat-lto-objects if compiling with clang instead of gcc.
+
+- BUG FIXES: Many fixes to man pages, some by Jochen Sprickerhof
+
+- MINOR BUG FIX: If Remind puts itself in the background, only close
+  stdout/stderr if they are not associated with a terminal.  If
+  we close a descriptor, dup /dev/null onto it.
+
+- MINOR BUG FIX: Catch SIGCONT when running in daemon/background mode.
+  This forces the select() call to be interrupted so we can update the
+  sleep time.  This really only matters if the computer or the background
+  Remind process is suspended and then resumed.
+
+* VERSION 4.2 Patch 7 - 2023-10-09
+
+- IMPROVEMENT: remind: On 32-bit systems, attempt to use a 64-bit time_t
+  if the C library supports that.  This lets Remind work properly with
+  dates after 2038 in the few cases it has to call mktime() internally.
+
+- MINOR NEW FEATURE: remind: Attempt to obtain the terminal background
+  color using an OSC sequence.  This normally only happens if standard
+  output is a terminal, but can be forced with the '-@..,t' option.
+
+- MINOR NEW FEATURE: remind: Add "--version" long option to print out
+  Remind's version and exit.
+
+- MINOR IMPROVEMENT: tkremind: Use a higher-resolution PNG image for
+  the icon.
+
+- MINOR IMPROVEMENT: remind-conf-mode.el: Update highlighting rules
+  courtesy of Bill Benedetto
+
+- MINOR CHANGE: Make AT optional.  If we encounter a TIME in a REM
+  command, implicitly begin an AT clause.
+
+- DOCUMENTATION: Many minor fixes and improvements courtesy of Dan Jacobson.
+
+- BUG FIX: Make "-w0" set the calendar width based on standard output
+  rather than setting it to zero and causing an infinite loop.
+
+* VERSION 4.2 Patch 6 - 2023-09-12
+
+- NEW FEATURE: remind: The "nonomitted()" function takes an optional
+  extra INT argument called "step".  See man page for details.  Also
+  allows the "start" argument to be greater than the "end" argument,
+  in which case they are effectively swapped.
+
+- NEW FEATURE: remind: The "slide()" function takes an optional extra
+  INT argument called "step", similar to "nonomitted()".  See man page
+  for details.
+
+- NEW FEATURE: remind: Added the $ParseUntriggered system variable;
+  see the man page for details.  You almost certainly will never need
+  to use this.
+
+- NEW FILE: holidays/ie.rem: Added Irish holidays, courtesy of
+  Amy de Buitléir.
+
+- CHANGE: remind: The "-tn" option sets all REM statement deltas to
+  ++n rather than adding n to any existing REM statement's delta.
+  Additionally, the corresponding system variable $DeltaOffset has
+  been renamed to $DeltaOverride.
+
+- NEW OPTION: remind: Add the "-tz" option to explicitly set all
+  REM statement deltas to zero.
+
+- DOCUMENTATION FIX: remind: various documentation improvements.
+
+- BUG FIX: Correct some errors in Italian localization, courtesy of
+  Emanuele Torre
+
+* VERSION 4.2 Patch 5 - 2023-04-11
+
+- MINOR IMPROVEMENT: remind: If someone uses OMIT yyyy-mm-dd UNTIL yyyy-mm-dd
+  give a better error message suggesting THROUGH instead of UNTIL.
+
+- BUG FIX: remind: The fix for the combination of ADDOMIT and SATISFY that
+  appeared in version 04.02.00 was not complete; the bug has finally been
+  properly fixed.
+
+- BUG FIX: remind: Remove an unnecessary #include <sys/file.h>.
+  Nothing needed that and it broke compilation on FreeBSD.
+
 * VERSION 4.2 Patch 4 - 2023-03-15
 
 - NEW FEATURE: Remind: Add "htmlescape" and "htmlstriptags" built-in

examples/alignment.rem

@@ -10,7 +10,7 @@ FSET center(x) pad("", " ", (columns() - columns(x))/2) + x
 FSET right(x) pad("", " ", columns() - columns(x)) + x
 
 MSG This is left-aligned.
-MSG [ansicolor(0,255,0)]This is also left-aligned.[ansicolor("")]
+MSG [ansicolor(0,255,0)]🌕 🌕 🌕 🌕 This is also left-aligned.[ansicolor("")]
 
 MSG [center("This is centered.")]
 MSG [ansicolor(255,255,0) + center("🌕 🌕 🌕 🌕 This is also centered. ") + ansicolor("")]

examples/astro

@@ -8,15 +8,13 @@
 # Set this variable to 1 if your terminal has a dark background or 0 if
 # it: light.
 
-bg_dark=1
-
 # Set your latitude and longitude correctly for Sunrise/Sunset/Equinox/Solstice
 #
 # The values below are for Ottawa, Ontario, Canada
 latitude="45.420556"
 longitude="-75.689722"
 
-remind -g -ibg_dark="$bg_dark" "-i\$Latitude=\"$latitude\"" "-i\$Longitude=\"$longitude\"" -q -@2 - "$@" <<'EOF'
+remind -g "-i\$Latitude=\"$latitude\"" "-i\$Longitude=\"$longitude\"" -q -@2 - "$@" <<'EOF'
 SET $AddBlankLines 0
 BANNER %
 
@@ -24,24 +22,25 @@ INCLUDE [$SysInclude]/ansitext.rem
 
 MSG Today is [ansi_bold][$T][ansi_normal], being the [ord($T-date(year($T),1,1)+1)] day of [year($T)].%_
 
-IF bg_dark
+IF $TerminalBackground == 0
    SPECIAL COLOR 255 255 0 Sunrise:               🌅 [sunrise()] today and [sunrise($T+1)] tomorrow
    SPECIAL COLOR 255 128 0 Sunset:                🌇 [sunset()] today and [sunset($T+1)] tomorrow%_
+ELSE
+   SPECIAL COLOR 128 128 0 Sunrise:               🌅 [sunrise()] today and [sunrise($T+1)] tomorrow
+   SPECIAL COLOR 128 32 0 Sunset:                🌇 [sunset()] today and [sunset($T+1)] tomorrow%_
+
 ENDIF
 EOF
 
-remind -g -ibg_dark="$bg_dark" "-i\$Latitude=\"$latitude\"" "-i\$Longitude=\"$longitude\"" -q -@2 - "$@" <<'EOF'
+remind -g "-i\$Latitude=\"$latitude\"" "-i\$Longitude=\"$longitude\"" -q -@2 - "$@" <<'EOF'
 SET $AddBlankLines 0
 BANNER %
-IF bg_dark
+IF $TerminalBackground == 0
    REM [moondatetime(0)] +60 SPECIAL COLOR 255 255 0 New moon:              🌑 [$T] %3 (%b)
    REM [moondatetime(1)] +60 SPECIAL COLOR 255 255 128 First Quarter:         🌓 [$T] %3 (%b)
    REM [moondatetime(2)] +60 SPECIAL COLOR 255 255 255 Full moon:             🌕 [$T] %3 (%b)
    REM [moondatetime(3)] +60 SPECIAL COLOR 255 255 128 Last Quarter:          🌗 [$T] %3 (%b)
 ELSE
-   SPECIAL COLOR 128 128 0 Sunrise:               🌅 [sunrise()] today and [sunrise($T+1)] tomorrow
-   SPECIAL COLOR 128 32 0 Sunset:                🌇 [sunset()] today and [sunset($T+1)] tomorrow%_
-
    REM [moondatetime(0)] +60 SPECIAL COLOR 128 128 0 New moon:              🌑 [$T] %3 (%b)
    REM [moondatetime(1)] +60 SPECIAL COLOR 128 128 64 First Quarter:         🌓 [$T] %3 (%b)
    REM [moondatetime(2)] +60 SPECIAL COLOR 0 0 0 Full moon:             🌕 [$T] %3 (%b)
@@ -51,7 +50,7 @@ EOF
 
 echo ""
 
-remind -g -ibg_dark="$bg_dark" "-i\$Latitude=\"$latitude\"" "-i\$Longitude=\"$longitude\"" -q -@2 - "$@" <<'EOF'
+remind -g "-i\$Latitude=\"$latitude\"" "-i\$Longitude=\"$longitude\"" -q -@2 - "$@" <<'EOF'
 SET $AddBlankLines 0
 BANNER %
 

examples/defs.rem

@@ -16,7 +16,7 @@
 #  "#PSSTUFF" for nifty PostScript examples				    #
 # 									    #
 # This file is part of REMIND.						    #
-# Copyright (C) 1992-2023 Dianne Skoll                                      #
+# Copyright (C) 1992-2024 Dianne Skoll                                      #
 # SPDX-License-Identifier: GPL-2.0-only
 # 									    #
 #############################################################################

include/ansitext.rem

@@ -2,7 +2,7 @@
 # Not all sequences are supported by all terminals.
 
 # This file is part of REMIND
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # SPDX-License-Identifier: GPL-2.0-only
 
 if !defined("ansi_bold")

include/holidays/ie.rem

@@ -0,0 +1,42 @@
+;
+; Irish Holidays
+;
+; The dates for the Public ("bank") holidays are taken from the following site:
+; https://www.citizensinformation.ie/en/employment/employment-rights-and-conditions/leave-and-holidays/public-holidays/
+;
+; This file was derived from:
+; https://github.com/mhwombat/dotWombat/blob/master/.config/remind/IrishHolidays.rem
+; by Amy de Buitléir.
+
+; fixed dates
+OMIT 31 December MSG New Year's Eve (Oíche Chinn Bliana) Public Holiday
+OMIT 1 January MSG New Year's Day (Lá Caille, Lá Bliana Nua) Public Holiday
+OMIT 17 March MSG Saint Patrick's Day (Lá Fhéile Pádraig) Public Holiday
+OMIT 24 December MSG Christmas Eve (Oíche Nollag) Public Holiday
+OMIT 25 December MSG Christmas Day (Lá Nollag) Public Holiday
+OMIT 26 December MSG Saint Stephen's Day, Wren Day (Lá Fhéile Stiofáin, Lá an Dreoilín) Public Holiday
+
+; moving dates
+
+; First Monday in May
+REM Monday 1 May SCANFROM -7 ADDOMIT MSG May Day (Lá Bealtaine) Public Holiday
+
+; First Monday in June
+REM Monday 1 June SCANFROM -7 ADDOMIT MSG June Public Holiday
+
+; First Monday in August
+REM Monday 1 August SCANFROM -7 ADDOMIT MSG August Public Holiday
+
+; Last Monday in October
+REM Monday 1 -7 November SCANFROM -7 ADDOMIT MSG October Public Holiday
+
+; Easter
+SET easter easterdate(today())
+REM [TRIGGER(easter-2)] MSG Good Friday (Aoine an Chéasta)
+REM [TRIGGER(easter)] MSG Easter Sunday (Domhnach Cásca)
+OMIT [TRIGGER(easter+1)] MSG Easter Monday (Luan Cásca) Public Holiday
+
+; St. Brigid's Day
+REM 1 February MSG Saint Brigid's Day (Lá Fhéile Bríde or Imbolc)
+; The public holiday is the first Monday in February, or 1 February if the date falls on a Friday
+REM February SCANFROM -7 ADDOMIT SATISFY [($Td==1 && $Tw==5) || ($Td<8 && $Tw==1 && $Td!=4)] MSG Public Holiday

include/holidays/jewish.rem

@@ -106,7 +106,3 @@ IF !Reform
    [_PastSat(17, "Tamuz")] ++4 MSG %"Tzom Tammuz%" is %b.
    [_PastSat(9,  "Av")] ++4 MSG %"Tish'a B'Av%" is %b.
 ENDIF
-
-# Clean up
-FUNSET _h _h2 _PastSat _BackTwoFri _BackTwoSat _chan
-

include/holidays/pt.rem

@@ -0,0 +1,17 @@
+# Portuguese holidays
+# Courtesy of Joop Kiefte
+
+OMIT 1 Jan MSG Ano Novo
+OMIT [easterdate()-47] MSG Carnaval
+OMIT [easterdate()-2] MSG Sexta-feira Santa
+OMIT [easterdate()] MSG Domingo de Páscoa
+OMIT 25 Apr MSG Dia da Liberdade
+OMIT 1 May MSG Dia do Trabalhador
+OMIT [easterdate()+60] MSG Corpo de Deus
+OMIT 10 Jun MSG Dia de Portugal, de Camões e das Comunidades Portuguesas
+OMIT 15 Aug MSG Assunção de Nossa Senhora
+OMIT 5 Oct MSG Implantação da República
+OMIT 1 Nov MSG Dia de Todos os Santos
+OMIT 1 Dec MSG Restauração da Independência
+OMIT 8 Dec MSG Imaculada Conceição
+OMIT 25 Dec MSG Natal

include/holidays/us.rem

@@ -1,6 +1,6 @@
 # US holidays
 # This file is part of REMIND.
-# Copyright (C) 1992-2023 Dianne Skoll
+# Copyright (C) 1992-2024 Dianne Skoll
 # SPDX-License-Identifier: GPL-2.0-only
 
 REM  [easterdate($Uy)-46] MSG Ash Wednesday

include/lang/auto.rem

@@ -1,24 +1,28 @@
 # SPDX-License-Identifier: GPL-2.0-only
-SET autolang getenv("REMIND_LANG")
+if !defined("__autolang__")
+    SET __autolang__ 1
+    PRESERVE __autolang__
+    SET autolang getenv("REMIND_LANG")
 
-IF autolang == ""
-    SET autolang getenv("LC_ALL")
-ENDIF
-IF autolang == ""
-    SET autolang getenv("LANGUAGE")
-ENDIF
-IF autolang == ""
-    SET autolang getenv("LANG")
-ENDIF
+    IF autolang == ""
+        SET autolang getenv("LC_ALL")
+    ENDIF
+    IF autolang == ""
+        SET autolang getenv("LANGUAGE")
+    ENDIF
+    IF autolang == ""
+        SET autolang getenv("LANG")
+    ENDIF
 
-IF autolang != ""
-    IF access($SysInclude + "/lang/" + lower(substr(autolang, 1, 5)) + ".rem", "r") == 0
-        INCLUDE [$SysInclude]/lang/[lower(substr(autolang, 1, 5))].rem
-    ELSE
-        IF access($SysInclude + "/lang/" + lower(substr(autolang, 1, 2)) + ".rem", "r") == 0
-            INCLUDE [$SysInclude]/lang/[lower(substr(autolang, 1, 2))].rem
+    IF autolang != ""
+        IF access($SysInclude + "/lang/" + lower(substr(autolang, 1, 5)) + ".rem", "r") == 0
+            INCLUDE [$SysInclude]/lang/[lower(substr(autolang, 1, 5))].rem
+        ELSE
+            IF access($SysInclude + "/lang/" + lower(substr(autolang, 1, 2)) + ".rem", "r") == 0
+                INCLUDE [$SysInclude]/lang/[lower(substr(autolang, 1, 2))].rem
+            ENDIF
         ENDIF
     ENDIF
+    UNSET autolang
 ENDIF
 
-UNSET autolang

include/lang/ca.rem

@@ -0,0 +1,53 @@
+# Support for the Catalan language.
+# This file is part of REMIND.
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
+# This file was created  by Eloi Torrents <eloitor@disroot.org>
+
+SET $Monday "dilluns"
+SET $Tuesday "dimarts"
+SET $Wednesday "dimecres"
+SET $Thursday "dijous"
+SET $Friday "divendres"
+SET $Saturday "dissabte"
+SET $Sunday "diumenge"
+
+SET $January "gener"
+SET $February "febrer"
+SET $March "març"
+SET $April "abril"
+SET $May "maig"
+SET $June "juny"
+SET $July "juliol"
+SET $August "agost"
+SET $September "setembre"
+SET $October "octubre"
+SET $November "novembre"
+SET $December "desembre"
+
+SET $Today "avui"
+SET $Tomorrow "demà"
+FSET subst_bx(a,d,t) iif(d==today()+2, "demà passat", "d'aquí " + (d-today()) + " dies")
+
+# 1 d'abril vs 1 de maig.
+FSET subst_sx(a,d,t) iif(isany(substr(mon(d), 1, 1), "a", "o") , "d'", "de")
+FSET subst_ordinal(d) ""
+
+BANNER Agenda pel %w, %d %s %m de %y%o:
+
+SET $Am "am"
+SET $Pm "pm"
+
+SET $Ago "fa"
+SET $Fromnow "des d'avui"
+SET $On "el dia"
+SET $Now "ara"
+SET $At "a les"
+
+SET $Minute "minut"
+SET $Mplu "s"
+SET $Hour "hora"
+FSET subst_hours(h) iif(h==1, "1 hora", h + " hores")
+
+SET $Is "és"
+SET $Was "va ser"
+SET $And "i"

include/lang/da.rem

@@ -1,6 +1,6 @@
 # Support for the Danish language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # This file is derived from a translation by Mogens Lynnerup.
 
 SET $Sunday "Søndag"

include/lang/de.rem

@@ -1,6 +1,6 @@
 # Support for the German language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # This file is derived from a translation by Wolfgang Thronicke
 
 # Day names

include/lang/en.rem

@@ -1,4 +1,4 @@
 # Support for the English language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # Nothing to do for English since it is the default.

include/lang/es.rem

@@ -1,6 +1,6 @@
 # Support for the Spanish language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # This file is derived from a translation by Rafa Couto <rafacouto@biogate.com>
 
 SET $Sunday "Domingo"

include/lang/fi.rem

@@ -1,6 +1,6 @@
 # Support for the Finnish language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # This file is derived from a translation by Mikko Silvonen
 
 SET $Sunday "sunnuntai"

include/lang/fr.rem

@@ -1,6 +1,6 @@
 # Support for the French language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # This file is derived from a translation by Laurent Duperval
 
 SET $Sunday "dimanche"

include/lang/gr.rem

@@ -1,6 +1,6 @@
 # Support for the Hellenic (Greek) language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # This file is derived from a translation by jarlaxl lamat (jarlaxl@freemail.gr)
 
 SET $Sunday "Κυριακή"

include/lang/is.rem

@@ -1,6 +1,6 @@
 # Support for the Icelanding language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # This file is derived from a translation by Björn Davíðsson (bjossi@snerpa.is)
 
 SET $Sunday "sunnudagur"

include/lang/it.rem

@@ -1,14 +1,14 @@
 # Support for the Italian language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # This file is derived from a translation by Valerio Aimale
 
 SET $Sunday "Domenica"
-SET $Monday "Lunedí"
-SET $Tuesday "Martedí"
-SET $Wednesday "Mercoledí"
-SET $Thursday "Giovedí"
-SET $Friday "Venerdí"
+SET $Monday "Lunedì"
+SET $Tuesday "Martedì"
+SET $Wednesday "Mercoledì"
+SET $Thursday "Giovedì"
+SET $Friday "Venerdì"
 SET $Saturday "Sabato"
 
 SET $January "Gennaio"
@@ -40,7 +40,7 @@ SET $Now "ora"
 SET $At "alle"
 SET $Minute "minuto"
 SET $Hour "ora"
-SET $Is "é"
+SET $Is "è"
 SET $Was "era"
 SET $And "e"
 SET $Hplu "a"

include/lang/nl.rem

@@ -1,6 +1,6 @@
 # Support for the Dutch language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # This file is derived from a translation by Willem Kasdorp and Erik-Jan Vens
 
 SET $Sunday "zondag"

include/lang/no.rem

@@ -1,6 +1,6 @@
 # Support for the Norwegian language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # This file is derived from a translation by Trygve Randen
 
 SET $Sunday "Søndag"

include/lang/pl.rem

@@ -1,6 +1,6 @@
 # Support for the Polish language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # This file is derived from a translation by Jerzy Sobczyk
 
 SET $Sunday "Niedziela"

include/lang/pt.rem

@@ -1,6 +1,6 @@
 # Support for the (Brazilian) Portuguese language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # This file is derived from a translation by Marco Paganini
 
 SET $Sunday "domingo"

include/lang/ro.rem

@@ -1,6 +1,6 @@
 # Support for the Romanian language.
 # This file is part of REMIND.
-# REMIND is Copyright (C) 1992-2023 by Dianne Skoll
+# REMIND is Copyright (C) 1992-2024 by Dianne Skoll
 # This file is derived from a translation by Liviu Daia
 
 SET $Sunday "Duminică"

include/moonphases.rem

@@ -0,0 +1,14 @@
+# Moon phases
+# SPDX-License-Identifier: GPL-2.0-only
+
+IF $CalMode || $PsCal
+    REM [moondate(0)] SPECIAL MOON 0 -1 -1 [moontime(0)]
+    REM [moondate(1)] SPECIAL MOON 1 -1 -1 [moontime(1)]
+    REM [moondate(2)] SPECIAL MOON 2 -1 -1 [moontime(2)]
+    REM [moondate(3)] SPECIAL MOON 3 -1 -1 [moontime(3)]
+ELSE
+    REM NOQUEUE [moondatetime(0)] MSG New Moon (%2)
+    REM NOQUEUE [moondatetime(1)] MSG First Quarter (%2)
+    REM NOQUEUE [moondatetime(2)] MSG Full Moon (%2)
+    REM NOQUEUE [moondatetime(3)] MSG Last Quarter (%2)
+ENDIF

man/rem.1.in

@@ -19,4 +19,4 @@ Remind was written by Dianne Skoll <dianne@skoll.ca>
 .SH HOME PAGE
 https://dianne.skoll.ca/projects/remind/
 .SH SEE ALSO
-\fBremind\fR
+\fBremind\fR(1)

man/rem2ps.1.in

@@ -5,22 +5,25 @@ rem2ps \- draw a PostScript calendar from Remind output
 .SH SYNOPSIS
 .B rem2ps [\fIoptions\fR]
 .SH DESCRIPTION
-\fBRem2ps\fR reads the standard input, which should be the results of
+\fBrem2ps\fR reads the standard input, which should be the results of
 running \fBRemind\fR with the \fB\-p\fR or \fB\-pp\fR option.  It
 emits PostScript code (which draws a calendar) to the standard output.
 .PP
-See the section "Rem2PS Input Format" for details about the \fB\-p\fR
+Although \fBrem2ps\fR will be maintained, no new features will be added
+to it.  Instead, all new development will continue on \fBrem2pdf\fR.
+.PP
+See the section "REM2PS INPUT FORMAT" for details about the \fB\-p\fR
 data.  This may be useful if you wish to create other \fBRemind\fR
 back-ends.
 .PP
-Note that \fBRem2PS\fR does not handle UTF-8 input.  If you need to
+Note that \fBrem2ps\fR does not handle UTF-8 input.  If you need to
 render characters outside the ASCII character set, see
 \fBrem2pdf\fR instead.
 
 .SH OPTIONS
 .TP
 .B \-v
-Be more verbose.  This causes \fBRem2ps\fR to print progress messages
+Be more verbose.  This causes \fBrem2ps\fR to print progress messages
 to the standard error stream.  Normally, it is silent.
 .TP
 .B \-p file
@@ -133,7 +136,7 @@ numbers.
 
 .PP
 Type "rem2ps \-m help" for a list of available media.  Note that the media
-type (and all \fBRem2ps\fR options) are case-sensitive.  If you don't use
+type (and all \fBrem2ps\fR options) are case-sensitive.  If you don't use
 the \fB\-m\fR option, the media defaults to a compiled-in default - this
 is usually Letter for North America and A4 for Europe.  The "\-m help"
 option will display the compiled-in default.
@@ -193,8 +196,8 @@ for good output:
 	rem2ps \-ol 72 \-sh 12
 .fi
 .SH USAGE
-To use \fBRem2ps\fR, you should pipe the output of \fBRemind\fR with the \fB\-p\fR
-option to \fBRem2ps\fR, and then send the result to a printer.  This is most easily
+To use \fBrem2ps\fR, you should pipe the output of \fBRemind\fR with the \fB\-p\fR
+option to \fBrem2ps\fR, and then send the result to a printer.  This is most easily
 illustrated with examples:
 .PP
 .nf
@@ -228,10 +231,10 @@ calendar entries.  This border is normally blank space.
 .TP
 BoxWidth and BoxHeight
 The width and height of the calendar box, from center-to-center of the
-black gridlines.
+black grid lines.
 .TP
 InBoxHeight
-The height from the center of the bottom black gridline to the top
+The height from the center of the bottom black grid line to the top
 of the regular calendar entry area.  The space from here to the top
 of the box is used only to draw the day number.
 .TP
@@ -260,7 +263,7 @@ PostScript files.  Always test your PostScript thoroughly with a PostScript
 viewer before sending it to the printer.  You should not use any document
 structuring comments in your PostScript code.
 .PP
-In addition, prior to drawing a calendar page, \fBRem2ps\fR emits
+In addition, prior to drawing a calendar page, \fBrem2ps\fR emits
 the following PostScript code:
 .PP
 .nf
@@ -320,14 +323,14 @@ For an example, create a file called "myprolog" whose contents are:
 		} bind def
 .fi
 .PP
-Use that file with the \fBRem2ps\fR \fB\-p\fR option to create calendars
-with the year and month in large grey letters in the background of the
+Use that file with the \fBrem2ps\fR \fB\-p\fR option to create calendars
+with the year and month in large gray letters in the background of the
 calendar.
 .PP
 .SH REM2PS INPUT FORMAT (-P OPTION)
 The \fB\-p\fR option is an older, simpler interchange format used by
 \fBRemind\fR to communicate with back-ends.  New back-ends are
-encoraged to support the new \fB\-pp\fR format preferably, though they
+encouraged to support the new \fB\-pp\fR format preferably, though they
 are encouraged to support the older \fB\-p\fR format as well if the
 older format contains enough information for them to work properly.
 .PP
@@ -380,7 +383,7 @@ been set to "-".  The consistent use of "/" is designed to ease parsing.
 .PP
 \fIspecial\fR is a string used
 for "out-of-band" communication with back-ends.  If the reminder
-is a normal reminder, \fIspecial\fR is "*".  The \fBRem2PS\fR
+is a normal reminder, \fIspecial\fR is "*".  The \fBrem2ps\fR
 back-end understands the specials \fBPostScript\fR and \fBPSFile\fR.
 Other back-ends may understand other specials.  A back end should
 \fIsilently ignore\fR a reminder with a special it doesn't understand.
@@ -458,7 +461,7 @@ JSON object.  The keys that may be present in the JSON object are as
 follows:
 .TP
 .B date \fIYYYY-MM-DD\fR
-The \fbdate\fR key will \fIalways\fR be present; it is the trigger date
+The \fBdate\fR key will \fIalways\fR be present; it is the trigger date
 of the reminder expressed as a string in the format \fIYYYY-MM-DD\fR
 .TP
 .B filename \fIf\fR
@@ -674,17 +677,17 @@ is desired.
 
 
 .SH AUTHOR
-Rem2PS was written by Dianne Skoll <dianne@skoll.ca>
+rem2ps was written by Dianne Skoll <dianne@skoll.ca>
 .SH BUGS
-All \fBRem2ps\fR options are case-sensitive, unlike \fBRemind\fR.
+All \fBrem2ps\fR options are case-sensitive, unlike \fBRemind\fR.
 Any time you supply
 a font name or size, line thickness, or border width, it is treated as a
 string and sent straight to the PostScript interpreter.  Thus, if you
-supply invalid fonts or sizes, \fBRem2ps\fR will not complain, but the
+supply invalid fonts or sizes, \fBrem2ps\fR will not complain, but the
 resulting PostScript output will probably not work.
 .PP
 You should ensure that the values you supply for margin widths are sensible.
-If they are too big for the media size, \fBRem2ps\fR will not complain,
+If they are too big for the media size, \fBrem2ps\fR will not complain,
 but again, the PostScript output will probably not work.
 .SH HOME PAGE
 https://dianne.skoll.ca/projects/remind/

man/remind.1.in

@@ -60,7 +60,9 @@ weeks to be produced.
 .B 'a'
 causes \fBRemind\fR to display reminders on the calendar on the
 day they actually occur \fIas well as\fR on any preceding days
-specified by the reminder's \fIdelta\fR.
+specified by the reminder's \fIdelta\fR.  This \fIalso\fR causes
+\fBRemind\fR to include text outside %"...%" sequences that would
+otherwise be removed (though the actual %" markers themselves are removed.) \"" Add comment to avoid Emacs highlighting problems
 .TP
 .B 'l'
 causes \fBRemind\fR to use VT100 line-drawing characters to draw
@@ -103,11 +105,18 @@ If the optional \fIm\fR parameter is supplied following a comma, then
 \fIm\fR=0 tells \fBRemind\fR that the terminal background is dark, and
 \fBRemind\fR will brighten up dark colors to make them visible.  If
 \fIm\fR=1, then \fBRemind\fR assumes the terminal background is light
-and it will darken bright colors to make them visible.  If no \fIm\fR
-is supplied, or it is supplied as \fIm\fR=2, then \fBRemind\fR does
-not perform any adjustments, and some reminders may be hard or
-impossible to see if the color is too close to the terminal background
-color.
+and it will darken bright colors to make them visible.  If \fIm\fR is
+specified as 2, then \fBRemind\fR does not perform any adjustments,
+and some reminders may be hard or impossible to see if the color is
+too close to the terminal background color.  If you supply the letter
+\fBt\fR rather than a number, then Remind attempts to guess the background
+color of the terminal, \fIeven if\fR stdout is not a terminal.
+.PP
+On startup, if the standard output is a terminal, \fBRemind\fR
+attempts to determine if the terminal background is dark or light by
+sending a special escape sequence to determine the background color.
+The \fIm\fR parameter can override this check (or force it if
+\fIm\fR is given as \fBt\fR.)
 .PP
 If the optional \fIb\fR parameter is supplied following a comma, then
 \fIb=0\fR tells \fBRemind\fR to ignore SPECIAL SHADE reminders (the
@@ -222,8 +231,14 @@ regardless of the \fIdelta\fR supplied for each reminder.
 .TP
 .B \-t\fR\fIn\fR
 If you supply a number \fIn\fR after the \fB\-t\fR option, then
-\fBRemind\fR pretends that each non-expired reminder has a \fIdelta\fR
-of \fIn\fR days and triggers reminders accordingly.
+\fBRemind\fR pretends that echo \fBREM\fR command has a delta
+of \+\+\fIn\fR, regardless of any existing delta.
+.TP
+.B \-tz\fR
+If you supply the letter \fBz\fR after the \fB\-t\fR option, then
+\fBRemind\fR sets all REM statements' deltas to zero, regardless of the
+value supplied in the REM statement itself.  In effect, this disables
+all deltas of the form \fB\+\fIn\fR and \fB\+\+\fIn\fR.
 .TP
 .B \-tt\fR[\fIn\fR]
 The \fB-tt\fR option causes \fBRemind\fR to assume a default delta of
@@ -281,6 +296,11 @@ Echo lines when displaying error messages
 .TP
 .B f
 Trace the reading of reminder files
+.TP
+.B s
+Trace expression parsing and display the internal expression node
+tree.  This is unlikely to be useful unless you are working on
+\fBRemind\fR's expression evaluation engine.
 .RE
 .TP
 \fB\-g\fR[\fBa|d\fR[\fBa|d\fR[\fBa|d\fR[\fBa|d\fR]]]]
@@ -342,16 +362,24 @@ You use both \fB\-k\fR\fIcmd1\fR and \fB\-k:\fR\fIcmd2\fR to use different
 commands for queued versus non-queued reminders.
 .RE
 .TP
-\fB\-z\fR[\fIn\fR] Runs \fBRemind\fR in the daemon mode.  If \fIn\fR
+\fB\-z\fR[\fIn\fR] Runs \fBRemind\fR in "daemon mode".  If \fIn\fR
 is supplied, it specifies how often (in minutes) \fBRemind\fR should
 wake up to check if the reminder script has been changed.  \fIN\fR
 defaults to 1, and can range from 1 to 60.  Note that the use of the
 \fB\-z\fR option also enables the \fB\-f\fR option.
 .PP
 .RS
-If you supply the option \fB\-z0\fR, \fBRemind\fR runs in a
+If \fBRemind\fR is compiled on a system that supports
+\fBinotify\fR(7), then if the reminder script supplied on the
+command-line is actually a directory, \fBRemind\fR additionally checks
+if all files within that directory have been modified since startup.
+.PP
+If you supply the option \fB\-zj\fR, \fBRemind\fR runs in a
 special mode called \fBserver mode\fR.  This is documented
-in the tkremind man page; see tkremind(1).
+in the tkremind man page; see tkremind(1).  The older server mode
+option \fB\-z0\fR still works, but is deprecated; it uses an ad-hoc
+method to communicate with the client rather than using JSON to communicate
+with the client.
 .RE
 .TP
 \fB\-u\fR\fIname\fR
@@ -388,7 +416,9 @@ TAG clause.
 \fB\-i\fR\fIvar\fR\fB=\fR\fIexpr\fR
 Sets the value of the specified \fIvar\fR to \fIexpr\fR, and \fBpreserves\fR
 \fIvar\fR.  \fIExpr\fR can be any valid \fBRemind\fR expression.  See the
-section "INITIALIZING VARIABLES ON THE COMMAND LINE" for more details.
+section "INITIALIZING VARIABLES ON THE COMMAND LINE" for more details.  If
+you omit the \fB=\fR\fIexpr\fR part, then \fIvar\fR is initialized to 0.
+In other words, \fB\-i\fIvar\fR is exactly the same as \fB\-i\fIvar\fR\fB=\fR0.
 .TP
 \fB\-i\fR\fIfunc\fR(\fIargs\fR)=\fIdefinition\fR
 Allows you to define a function on the command line.
@@ -419,6 +449,30 @@ with the date incrementing on each iteration.  You may have to enclose
 the parameter in quotes to avoid shell expansion.  See the subsection
 "Repeated Execution" in the section "CALENDAR MODE" for more
 information.
+
+.SH LONG OPTIONS
+
+\fBRemind\fR supports the following long options, which \fIare\fR
+case-sensitive:
+
+.RP
+.B \-\-version
+The \fB\-\-version\fR option causes \fBRemind\fR to print its version number
+to standard output and then exit.
+.TP
+.B \-\-max-execution-time\fR=\fIn\fR
+Limit the total execution time (as measured by the wall clock) to
+\fIn\fR seconds.  This is useful if \fBRemind\fR is invoked on
+potentially-untrustworthy files that could attempt to use a lot of
+resources.  Note that the limit \fIn\fR is approximate and
+\fBRemind\fR might execute for one or two more seconds before it is
+killed.  If \fIn\fR is specified as zero, then no limit is applied, just
+as if the option had not been used at all.
+.PP
+If a limit is applied, it applies only to the foreground run of \fBRemind\fR.
+If \fBRemind\fR finishes processing the script and then starts handling
+queued reminders, the time limit is reset to no limit.
+.PP
 .SH REMINDER FILES
 .PP
 \fBRemind\fR uses scripts to control its operation.  You can use any
@@ -427,14 +481,14 @@ text editor capable of creating plain-text files to create a
 very simple and almost immediately understandable:
 .PP
 .nf
-	REM 6 Jan MSG Dianne's birthday
+        REM Mar 31 MSG International Transgender Day of Visibility
 .fi
 .PP
 to the baroque and obscure:
 .PP
 .nf
-	REM [date(thisyear, 1, 1) + 180] ++5 OMIT \\
-	sat sun BEFORE MSG [ord(thisyear-1980)] payment due %b!
+        REM [date(thisyear, 1, 1) + 180] ++5 OMIT \\
+        sat sun BEFORE MSG [ord(thisyear-1980)] payment due %b!
 .fi
 .PP
 A reminder file consists of commands, with one command per line.  Several
@@ -602,6 +656,11 @@ The following examples show how date specifications are interpreted.
 .PP
 1. Null date specification - the reminder is triggered every day.
 The trigger date for a specific run is simply the current system date.
+For example:
+.PP
+.nf
+        REM MSG This is triggered every time Remind runs
+.fi
 .PP
 2. Only
 .I day
@@ -1114,7 +1173,7 @@ reminder is queued for later activation.  When \fBRemind\fR has
 finished processing the reminder file, it puts itself in the
 background, and activates timed reminders when the system time reached
 the specified time.  Note that if you use the \fBNOQUEUE\fR modifier
-in the \fBREM\fR command, then this queueing and background activation
+in the \fBREM\fR command, then this queuing and background activation
 is \fInot\fR performed.  \fBNOQUEUE\fR is useful if you want a time
 to be associated with a reminder (eg, in the calendar) but are not
 interested in a popup reminder happening at the specified time.
@@ -1186,7 +1245,9 @@ in the bodies of timed reminders, then when the timed reminders are
 activated, the variables and functions have the definitions that were
 in effect at the end of the reminder script.  These definitions may
 \fInot\fR necessarily be those that were in effect at the time the reminder
-was queued.
+was queued.  In addition, the OMIT context is whatever was in effect at
+the end of the reminder script, which may not necessarily be the same
+as when the \fBREM\fR command was first processed.
 .PP
 .B THE SCHED AND WARN KEYWORDS
 .PP
@@ -1680,6 +1741,11 @@ For example, the following sequences are equivalent:
 	OMIT 3 Jan 2011 THROUGH 5 Jan 2011
 .fi
 .PP
+Note that \fBRemind\fR has a compiled-in limit to the number of full
+OMITs.  If you omit a range of \fIN\fR fully-specified (ie, year
+included) days, then \fIN\fR full OMITs are used up.  Trying to omit a
+very large range may result in the error "Too many full OMITs"
+.PP
 You can make a THROUGH \fBOMIT\fR do double-duty as a \fBREM\fR command as
 long as both dates are fully specified
 .PP
@@ -1782,7 +1848,7 @@ will begin reading from standard input.
 .PP
 If you specify a \fIdirectory\fR as the argument to \fBINCLUDE\fR, then
 \fBRemind\fR will process all files in that directory that match the shell
-patterm "*.rem".  The files are processed in sorted order; the sort order
+pattern "*.rem".  The files are processed in sorted order; the sort order
 matches that used by the shell when it expands "*.rem".
 .PP
 Note that the file specified by an \fBINCLUDE\fR command is interpreted
@@ -1836,24 +1902,6 @@ If you run \fBRemind\fR with the \fB\-r\fR command-line option,
 regardless of any \fBRUN\fR commands in the reminder script.  However,
 any command supplied with the \fB\-k\fR option will still be executed.
 .PP
-One use of the \fBRUN\fR command is to provide a secure interface
-between \fBRemind\fR and the \fBElm\fR mail system.  The \fBElm\fR
-system can automatically scan incoming mail for reminder or calendar
-entries, and place them in your calendar file.  To use this feature,
-you should set the calendar filename option under \fBElm\fR to be something
-like "~/.reminders.in", \fInot\fR your main reminder file!  This is
-so that any \fBRUN ON\fR commands mailed to you can never be activated.
-.PP
-Then, you can use the \fBElm\fR \fIscan message for calendar entries\fR
-command to place reminders prefaced by "->" into .reminders.in.  In
-your main .reminders file, include the following lines:
-.PP
-.nf
-	RUN OFF   # Disable RUN
-	INCLUDE .reminders.in
-	RUN ON    # Re-enable RUN
-.fi
-.PP
 In addition, \fBRemind\fR contains a few other security
 features.  It will not read a file that is group- or world-writable.
 It will not run set-uid.  If it reads a file you don't own, it will
@@ -1865,6 +1913,30 @@ attempt to check the ownership of standard input, even if it is
 coming from a file, and hence does \fInot\fR disable RUN and shell()
 in this situation.
 
+.PP
+.SH THE EXPR COMMAND
+.PP
+\fBRemind\fR lets you completely disable expression evaluation.  This
+could be useful if you are running Remind on a somewhat-untrustworthy
+file that is not expected to contain expressions.  To disable
+expression evaluation, use:
+.PP
+.nf
+        EXPR OFF
+.fi
+.PP
+If \fBRemind\fR encounters an expression while EXPR OFF is in effect, it
+returns an error
+.PP
+To re-enable expression evaluation, use:
+.PP
+.nf
+        EXPR ON
+.fi
+.PP
+As with \fBRUN ON\fB, \fBEXPR ON\fR can be used only in the top-level
+script, not in an included file.
+.PP
 .SH THE INCLUDECMD COMMAND
 .PP
 \fBRemind\fR allows you to execute a shell command and evaluate the
@@ -2117,13 +2189,13 @@ than those on higher lines.  The operators approximately correspond to
 C operators.
 .PP
 .nf
-	!  -     (unary logical negation and arithmetic negation)
-	*  /  %
-	+  -
-	<  <=  >  >=
-	==  !=
-	&&
-	||
+	!  -            (unary logical negation and arithmetic negation)
+	*  /  %         (multiplication, division, modulus)
+	+  -            (addition/concatenation, subtraction)
+	<  <=  >  >=    (comparisons)
+	==  !=          (equality and inequality tests)
+	&&              (logical AND)
+	||              (logical OR)
 .fi
 .PP
 .B DESCRIPTION OF OPERATORS
@@ -2138,7 +2210,10 @@ Unary minus.  Can be applied to an \fBINT\fR.  Returns the negative
 of the operand.
 .TP
 .B *
-Multiplication.  Returns the product of two \fBINT\fRs.
+Multiplication.  Returns the product of two \fBINT\fRs.  Alternatively, if
+one argument is a \fBSTRING\fR and the other an \fBINT\fR, returns a
+\fBSTRING\fR consisting of the INT number of repeats of the original STRING.
+In this case, the INT argument cannot be negative.
 .TP
 .B /
 Integer division.  Returns the quotient of two \fBINT\fRs, discarding the
@@ -2232,16 +2307,15 @@ If the operands are not of the same type, == returns 0 and != returns
 .RE
 .TP
 .B &&
-This is the logical AND operator.  Both of its operands must be of the
-same type and must not be \fBSTRING\fR type.  Returns the second
-operand if both operands are non-zero.  Otherwise, returns a zero
-of the same type as the operands.
+This is the logical AND operator.  Neither of its operands can be
+\fBSTRING\fR type.  Returns the second operand if both operands are
+non-zero.  Otherwise, returns whichever operand is zero.
 .TP
 .B ||
-This is the logical OR operator.  Both of its operands must be of
-the same type and must not be of \fBSTRING\fR type.  It returns
-the first operand that is non-zero; if both operands are zero, then
-returns a zero of the same type as the operands.
+This is the logical OR operator.  Neither of its operands can be
+\fBSTRING\fR type.  It returns the first operand that is non-zero; if
+both operands are zero, then returns the second operand.
+
 .PP
 .B NOTES
 .PP
@@ -2262,15 +2336,10 @@ For example:
 	12:59 + (1 + "test")  yields "12:591test"
 .fi
 .PP
-The logical operators are \fInot\fR so-called short-circuit operators, as
-they are in C.  Both operands are always evaluated.  Thus, an expression
-such as:
-.PP
-.nf
-	(f!=0) && (100/f <= 3)
-.fi
-.PP
-will cause an error if f is zero.
+The logical operators are so-called short-circuit operators, as
+they are in C.  This means that if the first operand of || is true,
+then the second operand is \fInot\fR evaluated.  Similarly, if the first
+operand of && is false, then the second operand is \fInot\fR evaluated.
 .PP
 .B VARIABLES
 .PP
@@ -2352,9 +2421,9 @@ Universal Time Coordinated in the \fB$MinsFromUTC\fR system variable.
 If non-zero, then the \fB\-c\fR option was supplied on the command line.
 .TP
 .B $Daemon (read-only)
-If the daemon mode \fB\-z\fR was invoked, contains the number of
+If "daemon mode" \fB\-z\fR was invoked, contains the number of
 minutes between wakeups.  If not running in daemon mode, contains
-0.
+0.  In server mode (either \fB-z0\fR or \fB-zj\fR), contains -1.
 .TP
 .B $DateSep
 This variable can be set only to "/" or "-".  It holds the character
@@ -2390,6 +2459,10 @@ is normally 0, but can be set with the \fB\-tt\fR option or explicitly
 set in your script.  If \fB$DefaultDelta\fR is non-zero, you can use an
 explicit delta of +0 in an AT clause to countermand the default delta.
 .TP
+.B $DeltaOverride (read-only)
+If non-zero, corresponds to the \fIn\fR argument given to a
+\fB\-t\fR\fIn\fR command-line option.
+.TP
 .B $DontFork (read-only)
 If non-zero, then the \fB\-c\fR option was supplied on the command line.
 .TP
@@ -2423,6 +2496,14 @@ because the final parenthesis and quote are ignored (for the purposes
 of spacing) when they follow a period.
 .RE
 .TP
+.B $ExpressionTimeLimit
+If set to a non-zero value \fIn\fR, than any expression that takes longer than
+\fIn\fR seconds to evaluate will be aborted and an error returned.  This is
+to prevent maliciously-crafted expressions for creating a denial-of-service.
+In an included file, $ExpressionTimeLimit can only be lowered from its
+current value.  In the top-level file, it can be set to any value, including
+zero to disable the time limit.
+.TP
 .B $FirstIndent
 The number of spaces by which to indent the first line of a \fBMSF\fR-type
 reminder.  The default is 0.
@@ -2456,7 +2537,8 @@ or a date different from today's true date was supplied.  If non-zero,
 then \fBONCE\fR directives will be ignored.
 .TP
 .B $InfDelta (read-only)
-If non-zero, then the \fB\-t\fR option was supplied on the command line.
+If non-zero, then the \fB\-t\fR option was supplied on the command line,
+with no \fIn\fR argument.
 .TP
 .B $IntMax (read-only)
 The largest representable \fBINT\fR.  On a machine with 32-bit signed integers
@@ -2533,6 +2615,24 @@ updates \fB$LongDeg\fR, \fB$LongMin\fR and \fB$LongSec\fR.  Similar
 rules apply to \fB$Latitude\fR, \fB$LatDeg\fR, \fB$LatMin\fR and \fB$LatSec\fR.
 .RE
 .TP
+.B $MaxLateMinutes
+This variable controls how \fBRemind\fR reacts to a computer being suspended
+and then woken.  Normally, if a timed reminder is queued and then the
+computer suspended, and then the computer is woken \fIafter\fR the
+timed reminder's trigger time, \fBRemind\fR will triger the timer anyway,
+despite the fact that the trigger time has already passed.
+.RS
+.PP
+If you set \fB$MaxLateMinutes\fR to a non-zero integer between 1 and 1440,
+then \fBRemind\fR will \fInot\fR trigger a timed reminder whose trigger
+time is more than \fB$MaxLateMinutes\fR minutes in the past.
+.PP
+Note that \fBRemind\fR uses the value of \fB$MaxLateMinutes\fR that is in
+effect when it has finished reading the reminder file and puts itself in
+the background.  Generally, you should set \fB$MaxLateMinutes\fR once
+near the beginning of the file and not change it after that.
+.RE
+.TP
 .B $MaxSatIter
 The maximum number of iterations for the \fBSATISFY\fR clause
 (described later.)  Must be at least 10.
@@ -2541,7 +2641,9 @@ The maximum number of iterations for the \fBSATISFY\fR clause
 A limit on the longest string that \fBRemind\fR will allow you
 to create.  The default is 65535.  If you set \fB$MaxStringLen\fR to 0
 or to -1, then \fBremind\fR will allow you to create arbitrarily-long
-strings, at least until it runs out of memory.
+strings, at least until it runs out of memory.  We do not recommend
+setting \fB$MaxStringLen\fR to 0 or -1 because it is very easy to write
+code that DOSes \fBRemind\fR in that case.
 .TP
 .B $MinsFromUTC
 The number of minutes between Universal Time Coordinated and local time.  If
@@ -2556,6 +2658,18 @@ must also set \fB$CalcUTC\fR to 0 with the \fB\-i\fR option.
 .B $NextMode (read-only)
 If non-zero, then the \fB\-n\fR option was supplied on the command line.
 .TP
+.B $MaxFullOmits (read-only)
+The maximum number of full OMITs allowed (a compiled-in constant.)
+.TP
+.B $MaxPartialOmits (read-only)
+The maximum number of partial OMITs allowed (a compiled-in constant.)
+.TP
+.B $NumFullOmits (read-only)
+The number of full OMITs in the current OMIT context.
+.TP
+.B $NumPartialOmits (read-only)
+The number of partial OMITs in the current OMIT context.
+.TP
 .B $NumQueued (read-only)
 Contains the number of reminders queued so far for background
 timed triggering.
@@ -2577,6 +2691,28 @@ by \fBREM\fR commands; triggers in \fBIFTRIG\fR commands do
 not affect it.
 .RE
 .TP
+.B $ParseUntriggered
+A flag indicating whether or not \fBRemind\fR should fully parse \fBREM\fR
+statements that are not triggered.  0 means to skip parsing them and 1
+(the default) means to parse them.
+.PP
+.RS
+For example, if we have the following \fBREM\fR statement:
+.PP
+.nf
+            REM 2020-01-01 MSG ["bad_expression" * 2]
+.fi
+.PP
+Then by default, \fBRemind\fR will fully parse the line and issue
+a "Type mismatch" error even if the reminder is not triggered.  However,
+if \fB$ParseUntriggered\fR is set to 0, then \fBRemind\fR will not
+issue the error except on 2020-01-01, when the reminder is triggered.
+.PP
+Setting \fB$ParseUntriggered\fR to 0 may in some cases slightly
+improve performance, at the risk of not catching errors until a
+reminder is triggered.
+.RE
+.TP
 .B $PrefixLineNo (read-only)
 If non-zero, then the \fB\-l\fR option was supplied on the command line.
 .TP
@@ -2641,6 +2777,9 @@ Equivalent to \fBwkdaynum(trigdate())\fR.
 .B $Ty (read-only)
 Equivalent to \fByear(trigdate())\fR.
 .TP
+.B $Tt (read-only, TIME type)
+Equivalent to \fBtrigtime()\fR.
+.TP
 .B $TimeSep
 This variable can be set only to ":" or ".".  It holds the character
 used to separate portions of a time when \fBRemind\fR prints a TIME or
@@ -2678,9 +2817,13 @@ Set to 1 if the \fB\-@1\fR option was used; 0 otherwise.
 Set to 1 if the \fB\-@2\fR option was used; 0 otherwise.
 .TP
 .B $TerminalBackground (read-only)
-Returns -1 if the terminal background color was not specified,
-0 if it was specified as dark with the \fB\-@,0\fR option or
-1 if it was specified as light with the \fB\-@,1\fR option.
+Returns -1 if the terminal background color could not be determined, 0
+if it was found to be dark (or was specified as dark with the
+\fB\-@,0\fR option) or 1 if it was found to be light (or specified as
+light with the \fB\-@,1\fR option.)  The terminal background is considered
+to be "dark" if the average of the red, green and blue components is
+at most 85 out of 255, and if the maximum of any component is at most
+128 out of 255.
 .PP
 Note:  If any of the calendar modes are in effect, then the
 values of $Daemon, $DontFork, $DontTrigAts, $DontQueue, $HushMode,
@@ -2983,11 +3126,12 @@ will produce undefined results.
 Returns the time of "civil twilight" on the specified \fIdate\fR.  If
 \fIdate\fR is omitted, defaults to \fBtoday()\fR.
 .TP
-.B easterdate(dqi_arg)
+.B easterdate([dqi_arg])
 If \fIarg\fR is an \fBINT\fR, then returns the date of Easter Sunday
 for the specified year.  If \fIarg\fR is a \fBDATE\fR or
 \fBDATETIME\fR, then returns the date of the next Easter Sunday on or
-after \fIarg\fR.  (The time component of a datetime is ignored.)
+after \fIarg\fR.  (The time component of a datetime is ignored.)  If \fIarg\fR
+is omitted, then it defaults to \fBtoday()\fR.
 .RS
 .P
 Note that \fBeasterdate\fR computes the Western Easter.  For the Orthodox
@@ -3249,6 +3393,62 @@ which default to \fBtoday()\fR and midnight, respectively.  The returned
 value is an integer from 0 to 359, representing the phase of the moon
 in degrees.  0 is a new moon, 180 is a full moon, 90 is first-quarter, etc.
 .TP
+.B multitrig(s_trig1 [,s_trig2, [... s_trigN]])
+\fBmultitrig\fR evaluates each string as a trigger, similar to \fBevaltrig\fR,
+and returns the \fIearliest\fR trigger date that is on or after \fBtoday()\fR.
+\fBmultitrig\fR is similar to \fBtrig\fR but has the following difference:
+.RS
+.PP
+\fBtrig\fR returns the \fIfirst\fR trigger date that would have triggered today,
+whereas \fBmultitrig\fR returns the \fIearliest\fR trigger date later than
+today, regardless of whether it would have triggered today.
+.PP
+If no trigger can be computed that is later than \fBtoday()\fR, then
+\fBmultitrig\fR returns 1990-01-01.
+.PP
+Consider the following examples, assuming that today is Sunday, 24 March 2024:
+.PP
+.nf
+   # Returns 1990-01-01 because neither would trigger today
+   SET a trig("Mon", "Wed")
+
+   # Returns 2024-03-25 because it's the earlier trigger date
+   SET a multitrig("Mon", "Wed")
+
+   # Returns 2024-03-27 because it's the first that would trigger today
+   SET a trig("Wed +3", "Mon +3")
+
+   # Returns 2024-03-25 because it's the earlier trigger date
+   SET a multitrig("Wed +3", "Mon +3")
+
+   # Returns 1990-01-01 because all triggers have expired
+   SET a multitrig("2000", "2022", "1998", "2023")
+.fi
+.PP
+In general, \fBmultitrig\fR works better with the Remind algorithm than
+\fBtrig\fR and should be used most of the time.  As an example, this
+reminder is issued at the end of each quarter:
+.PP
+.nf
+    REM [multitrig("Mar 31", "Jun 30", "Sep 30", "Dec 31")] +7 MSG \\
+    %"End of [ord($Tm/3)] quarter%" is %b.
+.fi
+.PP
+If you want the last working day of each quarter, you could use:
+.PP
+.nf
+    PUSH-OMIT-CONTEXT
+    OMIT Sat Sun
+    REM [multitrig("Mar ~1", "Jun ~1", "Sep ~1", "Dec ~1")] +7 MSG \\
+    %"Last working day of [ord($Tm/3)] quarter%" is %b.
+    POP-OMIT-CONTEXT
+.fi
+.PP
+Note that unlike \fBevaltrig\fR, \fBmultitrig\fR always returns a \fBDATE\fR
+and never a \fBDATETIME\fR.  Including an \fBAT\fR clause in a trigger
+supplied to \fBmultitrig\fR will result in an error.
+.RE
+.TP
 .B ndawn([dq_date])
 Returns the time of "nautical dawn" on the specified \fIdate\fR.  If
 \fIdate\fR is omitted, defaults to \fBtoday()\fR.  If a \fIdatetime\fR object
@@ -3258,14 +3458,31 @@ is supplied, only the date component is used.
 Returns the time of "nautical twilight" on the specified \fIdate\fR.  If
 \fIdate\fR is omitted, defaults to \fBtoday()\fR.
 .TP
-.B nonomitted(dq_start, dq_end [,s_wkday...])
+.B nonomitted(dq_start, dq_end [, i_step] [,s_wkday...])
 This function returns the number of \fInon-\fRomitted days between
 \fIstart\fR and \fIend\fR.  If \fIstart\fR is non-omitted, then it is
 counted.  \fIend\fR is never counted.
 .RS
 .PP
-Note that \fIend\fR must be greater than or equal to \fIstart\fR or an
-error is reported.  In addition to using the global OMIT context, you
+Note that if \fIend\fR is less than \fIstart\fR, the arguments
+are effectively swapped, so counting always begins from the older
+date.
+.PP
+If the third argument to \fBnonomitted\fR is an \fBINT\fR, then it must
+be greater than zero, and is consider to be the \fIstep\fR by which
+\fBnonomitted\fR counts.  For example the following expression:
+.PP
+.nf
+        nonomitted('2023-07-01', '2023-07-29', 7)
+.fi
+.PP
+returns the number of non-omitted Saturdays from 2023-07-01 up to
+(but not including) 2023-07-29.  (Both 2023-07-01 and 2023-07-29 are
+Saturdays.)
+.PP
+If no \fIstep\fR argument is supplied, then a step of 1 is used.
+.PP
+In addition to using the global OMIT context, you
 can supply additional arguments that are names of weekdays to be
 omitted.  However, in a \fBREM\fR command, any local \fBOMITFUNC\fR
 clause is \fInot\fR taken into account by this function.
@@ -3292,7 +3509,7 @@ reminder will label day numbers in a calendar:
 .fi
 .PP
 Obviously, the answer you get from \fBnonomitted\fR depends on the global
-OMIT context.  If you use moveable OMITs, you may get inconsistent results.
+OMIT context.  If you use movable OMITs, you may get inconsistent results.
 .PP
 Here is a more complex use for \fBnonomitted\fR.  My garbage collection
 follows two interleaved 14-day cycles: One Friday, garbage and paper
@@ -3325,11 +3542,12 @@ the actual time, or a time supplied on the command line.
 Returns a string that is the ordinal number \fInum\fR.  For example,
 \fBord(2)\fR returns "2nd", and \fBord(213)\fR returns "213th".
 .TP
-.B orthodoxeaster(dqi_arg)
+.B orthodoxeaster([dqi_arg])
 If \fIarg\fR is an \fBINT\fR, then returns the date of Orthodox Easter Sunday
 for the specified year.  If \fIarg\fR is a \fBDATE\fR or
 \fBDATETIME\fR, then returns the date of the next Orthodox Easter Sunday on or
-after \fIarg\fR.  (The time component of a datetime is ignored.)
+after \fIarg\fR.  (The time component of a datetime is ignored.)  If \fIarg\fR
+is omitted, then it defaults to \fBtoday()\fR.
 .RS
 .P
 Note that \fBorthodoxeaster\fR computes the Orthodox Easter.  For the Western
@@ -3486,10 +3704,13 @@ will set \fBa\fR to:
 .fi
 
 .TP
-.B slide(d_start, i_amt [,s_wkday...])
+.B slide(d_start, i_amt [, i_step] [,s_wkday...])
 This function is the inverse of \fBnonomitted\fR.  It adds \fIamt\fR
-days (which can be negative) to \fIstart\fR, \fInot counting omitted days\fR.
-The optional \fIwkday\fR arguments are additional weekday names to omit.
+(which can be negative) chunks of \fIstep\fR days to \fIstart\fR,
+\fInot counting omitted days\fR.  If \fIstep\fR is not supplied, then
+it is assumed to be 1.  Note that only every \fIstep\fRth day is
+tested to see if it is omitted.  The optional \fIwkday\fR arguments
+are additional weekday names to omit.
 .RS
 .PP
 Consider this example:
@@ -3509,6 +3730,26 @@ May 16 and 17.  You can go backwards, too, so:
 .fi
 .PP
 takes \fIa\fR back to 2009-05-13.
+.PP
+Now consider this example:
+.PP
+.nf
+        OMIT 14 May 2009
+        SET a slide('2009-05-07', 2, 7)
+.fi
+.PP
+This sets \fIa\fR to '2009-05-28' because we skip ahead two weeks, not
+counting a week where the day we land on happens to be omitted.  Contrast with
+this:
+.PP
+.nf
+        OMIT 13 May 2009
+        SET a slide('2009-05-07', 2, 7)
+.fi
+.PP
+which sets \fIa\fR to '2009-05-21'.  Although 2009-05-13 is omitted, we
+don't "land" on it as we step forward in chunks of 7 days, so we never
+see that it is omitted.
 .RE
 .TP
 .B soleq(i_which [, dqi_start])
@@ -3527,7 +3768,7 @@ not supplied, then it defaults to \fBtoday()\fR.
 .PP
 The return value of \fBsoleq()\fR is a \fBDATETIME\fR object specifying
 the date and time of the solstice or equinox in the local time zone.  It
-should be accurate to within 3 minues or so in the worst case.
+should be accurate to within 3 minutes or so in the worst case.
 .PP
 See the included file \fB$SysInclude/seasons.rem\fR for examples of how
 to use \fBsoleq()\fR.
@@ -3627,7 +3868,7 @@ function for advance warning to work properly.  This is because
 \fBtrig\fR returns a date constant (the trigger date) and the
 REM command does not know the details of \fBtrig\fR's arguments.
 .PP
-Note that because \fBRemind\fR does not have short-circuit logical
+Note that because \fBRemind\fR has short-circuit logical
 operators, something like:
 .PP
 .nf
@@ -3635,58 +3876,9 @@ operators, something like:
 .fi
 
 would set the value of trig() to the date of the following
-Thursday.  Even though trig("Mon +7") always returns true,
-the logical-OR operator still evaluates trig("Fri +7") which
-\fIalso\fR returns true and sets \fBtrig()\fR.
-.PP
-You can work around the lack of a short-circuit logical-OR as follows:
-If \fBtrig\fR returns a true value, the specific value it returns
-can be coerced to a DATE which is the trigger date.  So the following code:
-.PP
-.nf
-    SET a trig("Mon +4") || trig("Fri +4")
-    IF a
-        REM [a] +4 MSG [wkday($T)] %b.
-    ENDIF
-.fi
-.PP
-would operate as follows:
-.PP
-.nf
-    On Monday:    Monday today.
-    On Tuesday:   Friday in 3 days' time.
-    On Wednesday: Friday in 2 days' time.
-    On Thursday:  Monday in 4 days' time.
-    On Friday:    Monday in 3 days' time.
-    On Saturday:  Monday in 2 days' time.
-    On Sunday:    Monday tomorrow.
-.fi
-.PP
-Compare with the following:
-.PP
-.nf
-    SET a trig("Mon +4") || trig("Fri +4")
-    IF a
-        REM [trig()] +4 MSG [wkday($T)] %b.
-    ENDIF
-.fi
-.PP
-which yields:
-.PP
-.nf
-    On Monday:    Friday in 4 days' time.
-    On Tuesday:   Friday in 3 days' time.
-    On Wednesday: Friday in 2 days' time.
-    On Thursday:  Friday tomorrow.
-    On Friday:    Friday today.
-    On Saturday:  Monday in 2 days' time.
-    On Sunday:    Monday tomorrow.
-.fi
-.PP
-That is because \fBtrig()\fR returns the trigger date of
-the \fIlast\fR trig function that returns true,
-whereas the value of \fBa\fR is the trigger date of the \fIfirst\fR
-trig function that returns true.
+Monday.  Because trig("Mon +7") always returns true,
+the logical-OR operator does not bother evaluating trig("Fri +7") which
+therefore does not set \fBtrig()\fR.
 .PP
 \fBImportant Note\fR:  Because \fBtrig()\fR always returns an absolute
 date, it will \fBnot\fR work properly with a \fBSATISFY\fR clause.
@@ -4026,6 +4218,14 @@ with square brackets.  For example:
 This evaluates the expression "mydate", where "mydate" is
 presumably some pre-computed variable, and then "pastes" the result
 into the command-line for the parser to process.
+.PP
+If you want a literal "[" character for some reason, simply use "[[".  For
+example:
+.PP
+.nf
+        REM MSG Here are [[square] brackets!
+.fi
+
 .PP
 A formal description of this is:  When \fBRemind\fR encounters a
 "pasted-in" expression, it evaluates the expression, and coerces the
@@ -4216,7 +4416,7 @@ you define a function taking no parameters.  Here are some examples:
 .nf
 	FSET double(x) 2*x
 	FSET yeardiff(date1, date2) year(date1) - year(date2)
-	FSET since(x) ord(year(trigdate())\-x)
+	FSET since(x) ord($Ty \- x)
 .fi
 .PP
 The last function is useful in birthday reminders.  For example:
@@ -4231,6 +4431,12 @@ Dean was born in 1984.  The above example, on 1 November 1992, would print:
 	Dean's 8th birthday is today.
 .fi
 .PP
+Similarly, the function is useful in anniversary reminders.  For example:
+.PP
+.nf
+        REM 4 June MSG [since(1989)] anniversary of the Tienanmen Square massacre
+.fi
+.PP
 Notes:
 .TP
 o
@@ -4567,7 +4773,7 @@ under program control.  The format is:
 .PP
 \fBDEBUG\fR [+\fIflagson\fR] [\-\fIflagsoff\fR]
 .PP
-\fIFlagson\fR and \fIflagsoff\fR consist of strings of the characters "extvlf"
+\fIFlagson\fR and \fIflagsoff\fR consist of strings of the characters "extvlfs"
 that correspond to the debugging options discussed in the command-line
 options section.  If preceded with a "+", the corresponding group of
 debugging options is switched on.  Otherwise, they are switched off.
@@ -4871,21 +5077,25 @@ structuring comments in your PostScript code.
 .PP
 .SH DAEMON MODE
 .PP
-If you use the \fB\-z\fR command-line option, \fBRemind\fR runs in the
-"daemon" mode.  In this mode, no "normal" reminders are issued.
+If you use the \fB\-z\fR command-line option, \fBRemind\fR runs in
+"daemon mode".  In this mode, no "normal" reminders are issued.
 Instead, only timed reminders are collected and queued, and are then
 issued whenever they reach their trigger time.
 .PP
-In addition, \fBRemind\fR wakes up every few minutes to check the modification
-date on the reminder script (the filename supplied on the command line.)
-If \fBRemind\fR detects that the script has changed, it re-executes itself
-in daemon mode, and interprets the changed script.
+In addition, \fBRemind\fR wakes up every few minutes to check the
+modification date on the reminder script (the filename supplied on the
+command line.)  If \fBRemind\fR detects that the script has changed,
+it re-executes itself in daemon mode, and interprets the changed
+script.  If \fBRemind\fR was compiled with support for
+\fBinotify\fR(7), then if the command-line reminder script is really a
+directory, \fBRemind\fR also re-executes itself if any of the files in
+the directory is changed.
 .PP
 In daemon mode, \fBRemind\fR also re-reads the remind script when it
 detects that the system date has changed.
 .PP
 In daemon mode, \fBRemind\fR acts as if the \fB\-f\fR option had been used,
-so to run in the daemon mode in the background, use:
+so to run in daemon mode in the background, use:
 .PP
 .nf
 	remind \-z .reminders &
@@ -5112,7 +5322,7 @@ A number of system variables let you translate various phrases
 to other languages.  These system variables are:
 .PP
 .TP
-.B $Monday, $Tuesday, $Wednesday, $Thursday, $Friday, $Saturday
+.B $Monday, $Tuesday, $Wednesday, $Thursday, $Friday, $Saturday, $Sunday
 Set each of these system variables to a string representing the corresponding
 day's name in your language.  Strings must be valid UTF-8 strings.
 .TP
@@ -5215,7 +5425,7 @@ as:
 .PP
 You can define your own substitution sequences in addition to the built-in
 ones as follows:  If you define a function named \fBsubst_\fIname\fB(alt, date, time)\fR, then the sequence \fB%{name}\fR calls the function with \fBalt\fR
-set to 0 and \fBdate\fR and \fRtime\fR to the trigger date and time,
+set to 0 and \fBdate\fR and \fBtime\fR to the trigger date and time,
 respectively.  The \fB%{name}\fR sequence is replaced with whatever the
 function returns.  The sequence \fB%*{name}\fR is similar, but calls
 the function with \fBalt\fR set to 1.
@@ -5418,13 +5628,13 @@ the anniversary of a death is.  The following rules are used:
 o
 If the death occurred on 30 Heshvan, and Heshvan in the year after the
 death is \fIchaser\fR, then the jahrzeit is observed on 29 Heshvan in years
-when Heshvan is \fIchaser\fR.  Otherwise, the yahrzeit is observed on 1
+when Heshvan is \fIchaser\fR.  Otherwise, the jahrzeit is observed on 1
 Kislev when Heshvan is \fIchaser\fR.
 .TP
 o
 If the death occurred on 30 Kislev, and Kislev in the year after the
 death is \fIchaser\fR, then the jahrzeit is observed on 29 Kislev in years
-when Kislev is \fIchaser\fR.  Otherwise, the yahrzeit is observed on 1
+when Kislev is \fIchaser\fR.  Otherwise, the jahrzeit is observed on 1
 Tevet when Kislev is \fIchaser\fR.
 .TP
 o
@@ -5449,7 +5659,7 @@ The \fBSPECIAL\fR keyword is used to transmit "out-of-band" information
 to \fBRemind\fR backends, such as \fBtkremind\fR or \fBRem2PS\fR.
 They are used only when piping data from a \fBremind \-p\fR line.
 (Note that the COLOR special is an exception; it downgrades to the
-equivalent of MSG in \fBremind's\fR normal mode of operation.)
+equivalent of MSG in \fBRemind's\fR normal mode of operation.)
 .PP
 The various \fBSPECIAL\fRs recognized are particular for each
 backend; however, there are four \fBSPECIAL\fRs that all backends
@@ -5538,7 +5748,7 @@ after the WEEK keyword.
 .PP
 .SH MISCELLANEOUS
 .PP
-.B COMMAND ABBREVIATIONS
+.B COMMAND AND KEYWORD ABBREVIATIONS
 .PP
 The following tokens can be abbreviated:
 .TP
@@ -5565,6 +5775,9 @@ o
 \fBINCLUDE\fR --> \fBINC\fR
 .TP
 o
+\fBMAYBE-UNCOMPUTABLE\fR --> \fBMAYBE\fR
+.TP
+o
 \fBSCANFROM\fR --> \fBSCAN\fR
 .PP
 .B NIFTY EXAMPLES
@@ -5737,6 +5950,25 @@ components, then \fBRemind\fR will correctly compute a trigger date, even
 if it happens to be before the start of scanning.
 Note that this behaviour is not true for
 versions of \fBRemind\fR prior to 03.00.01.
+.SH FILES
+.PP
+The traditional location of your reminders file or directory is:
+.PP
+.nf
+        $HOME/.reminders
+.fi
+.PP
+where \fB$HOME\fR is your home directory.
+.PP
+Remind ships with some preinstalled files for holidays and language
+packs.  These are located in the following directory:
+.PP
+.nf
+        @prefix@/share/remind/
+.fi
+.PP
+Do not hard-code the above directory in your reminder files.  Instead,
+use the value of the $SysInclude system variable.
 .SH AUTHOR
 .PP
 Dianne Skoll <dianne@skoll.ca> wrote \fBRemind\fR.  The moon code
@@ -5784,9 +6016,11 @@ Liviu Daia
 Rafa Couto
 .PP
 \fBIcelandic\fR --
-Bj\(:orn Dav\('i\[Sd]sson
+Bj\[:o]rn Daví\[Sd]sson
 .SH BUGS
 .PP
+If you find a bug in Remind, please report it to: dianne@skoll.ca
+.PP
 There's no good reason why read-only system variables are not
 implemented as functions, or why functions like \fBversion()\fR, etc.
 are not implemented as read-only system variables.
@@ -5807,8 +6041,13 @@ Almanac Office, USNO.
 .PP
 Richard Siegel and Michael and Sharon Strassfeld, \fIThe First Jewish
 Catalog\fR, Jewish Publication Society of America.
+.PP
+Jean Meeus, \fIAstronomical Algorithms, Second Edition\fR, Willmann-Bell, Inc.
+
 .SH HOME PAGE
 https://dianne.skoll.ca/projects/remind/
+.SH MAILING LIST
+https://dianne.skoll.ca/mailman/listinfo/remind-fans
 .SH SEE ALSO
 .PP
 \fBrem\fR(1), \fBrem2ps\fR(1), \fBrem2pdf\fR(1), \fBtkremind\fR(1), \fBrem2html\fR(1)

man/tkremind.1.in

@@ -184,7 +184,9 @@ on the reminder.
 If there are any errors in your reminder file, the "Queue..." button
 changes to "Errors...".  Click on "Errors..." to see the Remind error
 output.  Click "OK" to close the error window; this makes the button
-in the main TkRemind window to revert to "Queue..."
+in the main TkRemind window to revert to "Queue..."  You can click on
+any error message to open an editor on the file and line number that
+caused the error.
 
 .SH BACKGROUND REMINDERS
 
@@ -192,7 +194,7 @@ If you create "timed" reminders, \fBTkRemind\fR will queue them in
 the background and pop up boxes as they are triggered.  Additionally,
 if you created the reminder using \fBTkRemind\fR, you will be given the
 option of "turning off" the reminder for the rest of the day.
-\fBTkRemind\fR achieves queueing of background reminders by running
+\fBTkRemind\fR achieves queuing of background reminders by running
 \fBRemind\fR in \fIserver mode\fR, described later.
 
 .SH OPTIONS
@@ -301,11 +303,11 @@ Today
 
 .SH IMMEDIATE UPDATES
 
-If you are running \fBTkRemind\fR on Linux and have the
-\fBinotifywait\fR program installed (part of the \fBinotify-tools\fR
-or similar package), then \fBTkRemind\fR redraws the calendar window
-\fIimmediately\fR if \fB$HOME/.reminders\fR changes (or, if it is a
-directory, any files in that directory change.)
+If you are running \fBTkRemind\fR on Linux and \fBRemind\fR has been
+compiled with \fBinotify\fR(7) support, then \fBTkRemind\fR redraws
+the calendar window \fIimmediately\fR if \fB$HOME/.reminders\fR
+changes (or, if it is a directory, any files in that directory
+change.)
 .PP
 This lets \fBTkRemind\fR react immediately to hand-edited reminders or
 to reminder files that are imported from another calendar system (for example,
@@ -366,60 +368,110 @@ your hand-edited files in a separate \fB*.rem\fR file than \fBTkRemind\fR's
 
 \fBRemind\fR has a special mode for interacting with programs like
 \fBTkRemind\fR.  This mode is called \fIserver mode\fR and is
-selected by supplying the \fB\-z0\fR option to \fBRemind\fR.
+selected by supplying the \fB\-zj\fR option to \fBRemind\fR.
 
 In server mode, \fBRemind\fR operates similar to daemon mode, except
-it reads commands (one per line)
-from standard input and writes status lines to standard output.
+it reads commands (one per line) from standard input and writes status
+lines to standard output.  Each status line is a JSON object.
 
 The commands accepted in server mode are:
 
 .TP
 EXIT
 Terminate the \fBRemind\fR process.  EOF on standard input does the
-same thing.
+same thing.  \fBRemind\fR exits immediately without printing
+a JSON status line.
 
 .TP
 STATUS
-Return the number of queued reminders.
+Return the number of queued reminders.  The JSON object looks
+something like this:
+.nf
+
+{"response":"queued","nqueued":n,"command":"STATUS"}
+
+.fi
+where \fIn\fR is the number of reminders queued.
+
+.TP
+QUEUE or JSONQUEUE
+Returns the contents of the queue.  The JSON object looks something
+like this:
+.nf
+
+{"response":"queue","queue":[ ... ],"command":"QUEUE"}
+
+.fi
+The value of the \fBqueue\fR key is an array of JSON objects, each
+representing a queued reminder.
+
+.TP
+DEL \fIqid\fR
+Delete the reminder with queue-id \fIqid\fR from the queue.
 
 .TP
 REREAD
-Re-read the reminder file
+Re-read the reminder file.  Returns the following status line:
+
+.nf
+
+{"response":"reread","command":"REREAD"}
+
+.fi
 
 .PP
-The status lines written are as follows:
+Additional status lines written are as follows:
 
 .TP
- NOTE reminder \fItime\fR \fItag\fR
-Signifies the beginning of a timed reminder whose trigger time is
-\fItime\fR with tag \fItag\fR.  If the reminder has no tag, an
-asterisk is supplied for \fItag\fR.  All lines following this line
-are the body of the reminder, until the line \fBNOTE endreminder\fR
-is transmitted.
+.nf
 
+{"response":"reminder","ttime":tt,"now":now,"tags":tags,"qid":qid,"body":body}
+
+.fi
+In this line, \fItt\fR is the trigger time of the reminder (expressed
+as a string), \fInow\fR is the current time, \fItags\fR (if present)
+is the tag or tags associated with the reminder, and \fIbody\fR is the
+body of the reminder.  This response causes \fBTkRemind\fR to pop up a
+reminder notification.  \fIqid\fR is a unique identifier for this
+reminder.  You may delete it from the queue by sending a \fBDEL\fR
+\fIqid\fR command to the server.  Note that \fIqid\fRs are not stable
+across re-reads; if \fBRemind\fR restarts itself to re-read the reminder
+file, then the \fIqid\fR values are likely to change, and any reminder
+deleted with a \fBDEL\fR \fIqid\fR command is likely to be re-queued.
 .TP
-NOTE newdate
+.nf
+
+{"response":"newdate"}
+
+.fi
+
 This line is emitted whenever \fBRemind\fR has detected a rollover of
 the system date.  The front-end program should redraw its calendar
 or take whatever other action is needed.
 
 .TP
-NOTE reread
-This line is emitted whenever the number of reminders in \fBRemind\fR's
-queue changes because of a date rollover or a \fBREREAD\fR command.
-The front-end should issue a \fBSTATUS\fR command in response to this
-message.
+.nf
 
-.TP
-NOTE queued \fIn\fR
-This line is emitted in response to a \fBSTATUS\fR command.  The number
-\fIn\fR is the number of reminders in the queue.
+{"response":"reread","command":"inotify"}
+
+.fi
+
+If \fBRemind\fR was compiled with support for \fBinotify\fR(7), then
+if it detects a change to the top-level reminder file or directory,
+it issues the above response.  The front-end should redraw its
+calendar since this response indicates that a change has been made
+to the reminder file or directory.
+
+.PP
+Please note that \fBRemind\fR can write a status message \fIat any time\fR
+and not just in response to a command sent to its standard input.  Therefore,
+a program that runs \fBRemind\fR in server mode must be prepared to handle
+asynchronous status messages.
 
 .SH AUTHOR
 TkRemind was written by Dianne Skoll <dianne@skoll.ca>
 
-\fBTkRemind\fR is Copyright 1996-2023 by Dianne Skoll.
+\fBTkRemind\fR is Copyright 1996-2024 by Dianne Skoll.
 
 .SH FILES
 

rem2html/Makefile.in

@@ -15,7 +15,7 @@ install:
 	@if test "$(PERL)" = "" ; then \
 	    echo "Not installing rem2html; Perl is required"; exit 0; fi; \
 	 for m in $(PERLMODS_NEEDED) ; \
-         do \
+	do \
 	    $(PERL) -M$$m -e 1 > /dev/null 2>&1; \
 	    if test $$? != 0 ; then echo "Not installing rem2html; missing $$m"; exit 0; fi; \
 	done; \

rem2html/rem2html.in

@@ -6,10 +6,11 @@ use warnings;
 
 use Getopt::Long;
 use JSON::MaybeXS;
+use Encode;
 
 my %Options;
 
-my $rem2html_version = '2.1';
+my $rem2html_version = '@VERSION@';
 
 my($days, $shades, $moons, $classes, $Month, $Year, $Numdays, $Firstwkday, $Mondayfirst, $weeks,
     @Daynames, $Nextmon, $Nextlen, $Prevmon, $Prevlen);
@@ -44,6 +45,11 @@ Print usage information
 
 Print version
 
+=item --utf8
+
+Assume standard input is encoded in UTF-8; write UTF-8 data to standard
+output.
+
 =item --backurl I<url>
 
 When producing the small calendar for the previous month, make the
@@ -154,6 +160,7 @@ Usage: remind -pp ... | rem2html [options]
 Options:
 
 --help, -h            Print usage information
+--utf8                Assume UTF-8 input and write UTF-8 output
 --man                 Show man page (requires "perldoc")
 --version             Print version
 --backurl url         Make the title on the previous month's small calendar
@@ -197,6 +204,7 @@ sub parse_options
     local $SIG{__WARN__} = sub { print STDERR "$TIDY_PROGNAME: $_[0]\n"; };
     if (!GetOptions(\%Options, "help|h",
 		    "man",
+                    "utf8",
                     "pngs",
 		    "version",
 		    "stylesheet=s",
@@ -216,13 +224,22 @@ sub parse_options
     if ($stylesheet) {
             $Options{stylesheet} = smoosh($Options{imgbase}, $stylesheet);
     }
+    if ($Options{utf8}) {
+            binmode(STDIN, ':encoding(UTF-8)');
+            binmode(STDOUT, ':encoding(UTF-8)');
+    }
 }
 
 sub start_output
 {
     return if ($Options{tableonly});
 
-    print("<html>\n<head>\n<title>" . $Options{title} . "</title>\n");
+    print("<html>\n<head>\n");
+    if ($Options{utf8}) {
+            print '<meta charset="UTF-8">' . "\n";
+    }
+
+    print("<title>" . $Options{title} . "</title>\n");
     if (!$Options{nostyle}) {
 	if ($Options{stylesheet}) {
                 print('<link rel="stylesheet" type="text/css" href="' .
@@ -310,7 +327,12 @@ sub parse_input
 		($y, $m, $d, $special, $tag, $duration, $time, $body) =
 		    ($1, $2, $3, $4, $5, $6, $7, $8);
 	} elsif (/\{/) {
-		my $obj = decode_json($_);
+		my $obj;
+                if ($Options{utf8}) {
+                        $obj = decode_json(encode('UTF-8', $_, Encode::FB_DEFAULT));
+                } else {
+                        $obj = decode_json($_);
+                }
 		next unless ($obj->{date} =~ /^(\d+)-(\d+)-(\d+)$/);
 		$y = $1;
 		$m = $2;

rem2pdf/bin/rem2pdf.in

@@ -486,7 +486,7 @@ output for the invalid reminder.
 =head1 ABSOLUTELY-POSITIONED TEXT
 
 If your B<PANGO> special reminder starts with C<@I<x>,I<y>> where I<x>
-and I<y> are floating-point numbers, then the Pango marked-up test is
+and I<y> are floating-point numbers, then the Pango marked-up text is
 positioned absolutely with respect to the day's box (and is not
 counted when calculating the box's height.)
 

resources/tkremind.desktop

@@ -0,0 +1,15 @@
+[Desktop Entry]
+Type=Application
+Exec=tkremind
+StartupNotify=true
+Icon=tkremind
+Terminal=false
+Name=tkremind
+Comment=TkRemind Calendar Program
+Categories=Office;Calendar;
+Keywords=Calendar;remind;
+Keywords[ca]=Calendari;remind;
+Keywords[de]=Kalender;remind;
+Keywords[en_GB]=Calendar;remind;
+Keywords[es]=Calendario;remind;
+

src/Makefile.in

@@ -30,7 +30,7 @@ REMINDSRCS=	calendar.c dynbuf.c dorem.c dosubst.c expr.c files.c funcs.c \
 		globals.c hbcal.c init.c main.c md5.c moon.c omit.c queue.c \
 		sort.c token.c trigger.c userfns.c utils.c var.c
 
-REMINDHDRS=config.h custom.h dynbuf.h err.h expr.h globals.h lang.h \
+REMINDHDRS=config.h custom.h dynbuf.h err.h globals.h lang.h \
 	   md5.h protos.h rem2ps.h types.h version.h
 REMINDOBJS= $(REMINDSRCS:.c=.o)
 
@@ -63,6 +63,16 @@ install: all
 	done
 	-mkdir -p $(DESTDIR)$(datarootdir)/remind || true
 	cp -R ../include/* $(DESTDIR)$(datarootdir)/remind
+	chmod -R a+rX $(DESTDIR)$(datarootdir)/remind
+	-mkdir -p $(DESTDIR)$(prefix)/share/pixmaps
+	-mkdir -p $(DESTDIR)$(prefix)/share/applications
+	$(INSTALL_DATA) $(srcdir)/../resources/tkremind.png $(DESTDIR)$(prefix)/share/pixmaps
+	$(INSTALL_PROGRAM) $(srcdir)/../resources/tkremind.desktop $(DESTDIR)$(prefix)/share/applications
+	-if test "$(DESTDIR)" = ""; then \
+	    update-desktop-database < /dev/null > /dev/null 2>&1 ; \
+	    xdg-icon-resource install --novendor --size 64 $(DESTDIR)$(prefix)/share/pixmaps/tkremind.png < /dev/null > /dev/null 2>&1 || true; \
+	    xdg-desktop-menu install --novendor $(DESTDIR)$(prefix)/share/applications/tkremind.desktop < /dev/null > /dev/null 2>&1 || true; \
+	fi
 
 install-stripped: install
 	strip $(DESTDIR)$(bindir)/remind || true
@@ -71,9 +81,6 @@ install-stripped: install
 clean:
 	rm -f *.o *~ core *.bak $(PROGS)
 
-cppcheck:
-	cppcheck --force --enable=all --suppress=variableScope --suppress=ConfigurationNotChecked *.c
-
 clobber:
 	rm -f *.o *~ remind rem2ps test.out core *.bak
 
@@ -83,6 +90,9 @@ depend:
 # The next targets are not very useful to you.  I use them to build
 # distributions, etc.
 
+cppcheck:
+	cppcheck -j`nproc` --force --enable=all --suppress=ConfigurationNotChecked --suppress=unmatchedSuppression --suppress=variableScope --inline-suppr .
+
 # Build a tar file based on all files checked into git.
 distro:
 	cd .. && git archive --worktree-attributes --format=tar --prefix=remind-$(VERSION)/ HEAD > src/remind-$(VERSION).tar

src/calendar.c

@@ -5,7 +5,7 @@
 /*  The code for generating a calendar.                        */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -35,7 +35,6 @@
 #include "lang.h"
 #include "types.h"
 #include "protos.h"
-#include "expr.h"
 #include "globals.h"
 #include "err.h"
 #include "md5.h"
@@ -475,7 +474,7 @@ void PrintJSONKeyPairTime(char const *name, int t)
 }
 
 #ifdef REM_USE_WCHAR
-void PutWideChar(wchar_t const wc)
+void PutWideChar(wchar_t const wc, DynamicBuffer *output)
 {
     char buf[MB_CUR_MAX+1];
     int len;
@@ -483,7 +482,11 @@ void PutWideChar(wchar_t const wc)
     len = wctomb(buf, wc);
     if (len > 0) {
 	buf[len] = 0;
-	fputs(buf, stdout);
+        if (output) {
+            DBufPuts(output, buf);
+        } else {
+            fputs(buf, stdout);
+        }
     }
 }
 #endif
@@ -556,11 +559,11 @@ static void goff(void)
 static void
 ClampColor(int *r, int *g, int *b)
 {
-    if (TerminalBackground == TERMINAL_BACKGROUND_UNKNOWN) {
+    if (GetTerminalBackground() == TERMINAL_BACKGROUND_UNKNOWN) {
 	/* No special clamping if terminal background is unknown */
 	return;
     }
-    if (TerminalBackground == TERMINAL_BACKGROUND_DARK) {
+    if (GetTerminalBackground() == TERMINAL_BACKGROUND_DARK) {
 	if (*r <= 64 && *g <= 64 && *b <= 64) {
 	    int max = *r;
 	    double factor;
@@ -579,7 +582,7 @@ ClampColor(int *r, int *g, int *b)
 	}
 	return;
     }
-    if (TerminalBackground == TERMINAL_BACKGROUND_LIGHT) {
+    if (GetTerminalBackground() == TERMINAL_BACKGROUND_LIGHT) {
 	if (*r > 191 && *g > 191 && *b > 191) {
 	    int min = *r;
 	    if (*g < min) min = *g;
@@ -667,11 +670,11 @@ Colorize(int r, int g, int b, int bg, int clamp)
     if (b > 64) b = 1;
     else b = 0;
 
-    if (clamp && TerminalBackground == TERMINAL_BACKGROUND_DARK && !bg) {
+    if (clamp && GetTerminalBackground() == TERMINAL_BACKGROUND_DARK && !bg) {
 	/* Convert black-on-black to grey */
 	if (!r && !g && !b) return VT100Colors[1][0][0][0];
     }
-    if (clamp && TerminalBackground == TERMINAL_BACKGROUND_LIGHT && !bg) {
+    if (clamp && GetTerminalBackground() == TERMINAL_BACKGROUND_LIGHT && !bg) {
 	/* Convert white-on-white to grey */
 	if (r && g && b) return VT100Colors[1][0][0][0];
     }
@@ -1037,7 +1040,7 @@ static void DoCalendarOneMonth(void)
 	    printf("\"entries\":[\n");
 	}
     }
-    while (WriteCalendarRow()) continue;
+    while (WriteCalendarRow()) /* continue */;
 
     if (PsCal == PSCAL_LEVEL1) {
 	printf("%s\n", PSEND);
@@ -1218,7 +1221,7 @@ static void PrintLeft(char const *s, int width, char pad)
 	if (!buf) {
 	    /* Uh-oh... cannot recover */
 	    fprintf(stderr, "%s\n", ErrMsg[E_NO_MEM]);
-	    exit(1);
+	    exit(EXIT_FAILURE);
 	}
     }
     (void) mbstowcs(buf, s, len+1);
@@ -1227,7 +1230,7 @@ static void PrintLeft(char const *s, int width, char pad)
     ws = buf;
     for (i=0; i<width;) {
 	if (*ws) {
-            PutWideChar(*ws++);
+            PutWideChar(*ws++, NULL);
             i+= wcwidth(*ws);
         } else {
             break;
@@ -1235,7 +1238,7 @@ static void PrintLeft(char const *s, int width, char pad)
     }
     /* Mop up any potential combining characters */
     while (*ws && wcwidth(*ws) == 0) {
-        PutWideChar(*ws++);
+        PutWideChar(*ws++, NULL);
     }
 
     /* Possibly send lrm control sequence */
@@ -1297,7 +1300,7 @@ static void PrintCentered(char const *s, int width, char *pad)
 	if (!buf) {
 	    /* Uh-oh... cannot recover */
 	    fprintf(stderr, "%s\n", ErrMsg[E_NO_MEM]);
-	    exit(1);
+	    exit(EXIT_FAILURE);
 	}
     }
     (void) mbstowcs(buf, s, len+1);
@@ -1308,7 +1311,7 @@ static void PrintCentered(char const *s, int width, char *pad)
     for (i=0; i<d; i++) fputs(pad, stdout);
     for (i=0; i<width; i++) {
 	if (*ws) {
-            PutWideChar(*ws++);
+            PutWideChar(*ws++, NULL);
             if (wcwidth(*ws) == 0) {
                 /* Don't count this character... it's zero-width */
                 i--;
@@ -1319,7 +1322,7 @@ static void PrintCentered(char const *s, int width, char *pad)
     }
     /* Mop up any potential combining characters */
     while (*ws && wcwidth(*ws) == 0) {
-        PutWideChar(*ws++);
+        PutWideChar(*ws++, NULL);
     }
     /* Possibly send lrm control sequence */
     send_lrm();
@@ -1448,7 +1451,7 @@ static int WriteOneColLine(int col)
                         }
                         numwritten += wcwidth(*ws);
                     }
-                    PutWideChar(*ws);
+                    PutWideChar(*ws, NULL);
                 }
 	    }
 	    e->wc_pos = ws;
@@ -1463,7 +1466,7 @@ static int WriteOneColLine(int col)
                     if (wcwidth(*ws) > 0) {
                         numwritten += wcwidth(*ws);
                     }
-                    PutWideChar(*ws);
+                    PutWideChar(*ws, NULL);
                 }
 	    }
 	}
@@ -1603,7 +1606,7 @@ static void GenerateCalEntries(int col)
     r=IncludeFile(InitialFile);
     if (r) {
 	fprintf(ErrFp, "%s %s: %s\n", ErrMsg[E_ERR_READING], InitialFile, ErrMsg[r]);
-	exit(1);
+	exit(EXIT_FAILURE);
     }
 
     while(1) {
@@ -1611,7 +1614,7 @@ static void GenerateCalEntries(int col)
 	if (r == E_EOF) return;
 	if (r) {
 	    Eprint("%s: %s", ErrMsg[E_ERR_READING], ErrMsg[r]);
-	    exit(1);
+	    exit(EXIT_FAILURE);
 	}
 	s = FindInitialToken(&tok, CurLine);
 
@@ -1666,6 +1669,7 @@ static void GenerateCalEntries(int col)
 	    case T_Pop:     r=PopOmitContext(&p);     break;
 	    case T_Push:    r=PushOmitContext(&p);    break;
 	    case T_Preserve: r=DoPreserve(&p);        break;
+            case T_Expr: r = DoExpr(&p);              break;
 	    case T_RemType: if (tok.val == RUN_TYPE) {
 		r=DoRun(&p);
 		break;
@@ -1766,7 +1770,7 @@ static int DoCalRem(ParsePtr p, int col)
     DBufInit(&raw_buf);
 
     /* Parse the trigger date and time */
-    if ( (r=ParseRem(p, &trig, &tim, 1)) ) {
+    if ( (r=ParseRem(p, &trig, &tim)) ) {
 	FreeTrig(&trig);
 	return r;
     }
@@ -1811,8 +1815,12 @@ static int DoCalRem(ParsePtr p, int col)
 	FindToken(DBufValue(&buf), &tok);
 	DBufFree(&buf);
 	if (tok.type == T_Empty || tok.type == T_Comment) {
+            r = OK;
+            if (trig.addomit) {
+                r = AddGlobalOmit(LastTriggerDate);
+            }
 	    FreeTrig(&trig);
-	    return OK;
+	    return r;
 	}
 	if (tok.type != T_RemType || tok.val == SAT_TYPE) {
 	    FreeTrig(&trig);
@@ -2207,10 +2215,114 @@ static void WriteSimpleEntryProtocol1(CalEntry *e)
 	printf("%s\n", e->text);
 }
 
+void WriteJSONTimeTrigger(TimeTrig const *tt)
+{
+    PrintJSONKeyPairTime("time", tt->ttime);
+    PrintJSONKeyPairTime("nexttime", tt->nexttime);
+    PrintJSONKeyPairInt("tdelta", tt->delta);
+    PrintJSONKeyPairInt("trep", tt->rep);
+    if (tt->duration != NO_TIME) {
+        PrintJSONKeyPairInt("duration", tt->duration);
+    }
+}
+
+void WriteJSONTrigger(Trigger const *t, int include_tags, int today)
+{
+    /* wd is an array of days from 0=monday to 6=sunday.
+       We convert to array of strings */
+    if (t->wd != NO_WD) {
+	printf("\"wd\":[");
+	int done = 0;
+	int i;
+	for (i=0; i<7; i++) {
+	    if (t->wd & (1 << i)) {
+		if (done) {
+		    printf(",");
+		}
+		done = 1;
+		printf("\"%s\"", EnglishDayName[i]);
+	    }
+	}
+	printf("],");
+    }
+    if (t->d != NO_DAY) {
+	PrintJSONKeyPairInt("d", t->d);
+    }
+    if (t->m != NO_MON) {
+	PrintJSONKeyPairInt("m", t->m+1);
+    }
+    if (t->y != NO_YR) {
+	PrintJSONKeyPairInt("y", t->y);
+    }
+    if (t->back) {
+	PrintJSONKeyPairInt("back", t->back);
+    }
+    if (t->delta) {
+	PrintJSONKeyPairInt("delta", t->delta);
+    }
+    if (t->rep) {
+	PrintJSONKeyPairInt("rep", t->rep);
+    }
+    /* Local omit is an array of days from 0=monday to 6=sunday.
+       We convert to array of strings */
+    if (t->localomit != NO_WD) {
+	printf("\"localomit\":[");
+	int done = 0;
+	int i;
+	for (i=0; i<7; i++) {
+	    if (t->localomit & (1 << i)) {
+		if (done) {
+		    printf(",");
+		}
+		done = 1;
+		printf("\"%s\"", EnglishDayName[i]);
+	    }
+	}
+	printf("],");
+    }
+    switch(t->skip) {
+    case SKIP_SKIP:
+	PrintJSONKeyPairString("skip", "SKIP");
+	break;
+    case BEFORE_SKIP:
+	PrintJSONKeyPairString("skip", "BEFORE");
+	break;
+    case AFTER_SKIP:
+	PrintJSONKeyPairString("skip", "AFTER");
+	break;
+    }
+    PrintJSONKeyPairDate("until", t->until);
+    if (t->once != NO_ONCE) {
+	PrintJSONKeyPairInt("once", t->once);
+    }
+    if (t->scanfrom != today) {
+	PrintJSONKeyPairDate("scanfrom", t->scanfrom);
+    }
+    PrintJSONKeyPairDate("from", t->from);
+    PrintJSONKeyPairInt("priority", t->priority);
+    PrintJSONKeyPairDateTime("eventstart", t->eventstart);
+    if (t->eventduration != NO_TIME) {
+        PrintJSONKeyPairInt("eventduration", t->eventduration);
+    }
+    if (t->maybe_uncomputable) {
+        PrintJSONKeyPairInt("maybe_uncomputable", 1);
+    }
+    if (t->noqueue) {
+        PrintJSONKeyPairInt("noqueue", 1);
+    }
+    PrintJSONKeyPairString("sched", t->sched);
+    PrintJSONKeyPairString("warn", t->warn);
+    PrintJSONKeyPairString("omitfunc", t->omitfunc);
+    if (t->addomit) {
+        PrintJSONKeyPairInt("addomit", 1);
+    }
+    if (include_tags) {
+        PrintJSONKeyPairString("tags", DBufValue(&(t->tags)));
+    }
+}
 
 static void WriteSimpleEntryProtocol2(CalEntry *e, int today)
 {
-    int done = 0;
     char const *s;
     if (DoPrefixLineNo) {
 	PrintJSONKeyPairString("filename", e->filename);
@@ -2230,88 +2342,13 @@ static void WriteSimpleEntryProtocol2(CalEntry *e, int today)
 	    PrintJSONKeyPairInt("trep", e->tt.rep);
 	}
     }
-    if (e->trig.eventduration != NO_TIME) {
-	PrintJSONKeyPairInt("eventduration", e->trig.eventduration);
-    }
-    /* wd is an array of days from 0=monday to 6=sunday.
-       We convert to array of strings */
-    if (e->trig.wd != NO_WD) {
-	printf("\"wd\":[");
-	done = 0;
-	int i;
-	for (i=0; i<7; i++) {
-	    if (e->trig.wd & (1 << i)) {
-		if (done) {
-		    printf(",");
-		}
-		done = 1;
-		printf("\"%s\"", EnglishDayName[i]);
-	    }
-	}
-	printf("],");
-    }
-    if (e->trig.d != NO_DAY) {
-	PrintJSONKeyPairInt("d", e->trig.d);
-    }
-    if (e->trig.m != NO_MON) {
-	PrintJSONKeyPairInt("m", e->trig.m+1);
-    }
-    if (e->trig.y != NO_YR) {
-	PrintJSONKeyPairInt("y", e->trig.y);
-    }
-    PrintJSONKeyPairDateTime("eventstart", e->trig.eventstart);
-    if (e->trig.back) {
-	PrintJSONKeyPairInt("back", e->trig.back);
-    }
-    if (e->trig.delta) {
-	PrintJSONKeyPairInt("delta", e->trig.delta);
-    }
-    if (e->trig.rep) {
-	PrintJSONKeyPairInt("rep", e->trig.rep);
-    }
+    WriteJSONTrigger(&e->trig, 0, today);
     if (e->nonconst_expr) {
 	PrintJSONKeyPairInt("nonconst_expr", e->nonconst_expr);
     }
     if (e->if_depth) {
 	PrintJSONKeyPairInt("if_depth", e->if_depth);
     }
-    switch(e->trig.skip) {
-    case SKIP_SKIP:
-	PrintJSONKeyPairString("skip", "SKIP");
-	break;
-    case BEFORE_SKIP:
-	PrintJSONKeyPairString("skip", "BEFORE");
-	break;
-    case AFTER_SKIP:
-	PrintJSONKeyPairString("skip", "AFTER");
-	break;
-    }
-    /* Local omit is an array of days from 0=monday to 6=sunday.
-       We convert to array of strings */
-    if (e->trig.localomit != NO_WD) {
-	printf("\"localomit\":[");
-	done = 0;
-	int i;
-	for (i=0; i<7; i++) {
-	    if (e->trig.localomit & (1 << i)) {
-		if (done) {
-		    printf(",");
-		}
-		done = 1;
-		printf("\"%s\"", EnglishDayName[i]);
-	    }
-	}
-	printf("],");
-    }
-    PrintJSONKeyPairDate("until", e->trig.until);
-    if (e->trig.once != NO_ONCE) {
-	PrintJSONKeyPairInt("once", e->trig.once);
-    }
-    if (e->trig.scanfrom != today) {
-	PrintJSONKeyPairDate("scanfrom", e->trig.scanfrom);
-    }
-    PrintJSONKeyPairDate("from", e->trig.from);
-    PrintJSONKeyPairInt("priority", e->trig.priority);
 
     if (e->is_color) {
 	PrintJSONKeyPairInt("r", e->r);

src/compare-language-mods.pl

@@ -24,27 +24,46 @@ if (!$ARGV[0]) {
 }
 
 my $lang = $ARGV[0];
-if (!exists($language_map->{$lang})) {
-        print STDERR "$lang is not a valid language.\n";
-        exit(1);
-}
-
-my $flag = $language_map->{$lang};
-print STDERR "Testing for: $lang - $flag.\n";
-my_sys("make clean > /dev/null 2>&1") && die("make clean failed");
-my_sys("make -j6 all LANGDEF=-DLANG=$flag > /dev/null 2>&1") && die("make all failed");
-my_sys("./remind -q -r ../tests/tstlang.rem 2022-03-23 11:44 > test-$lang-compiled.out 2>&1");
-
-my_sys("make clean > /dev/null 2>&1") && die("make clean failed");
-my_sys("make -j6 all > /dev/null 2>&1") && die("make all failed");
-my_sys("./remind -q -r -ii=\\\"../include/lang/$lang.rem\\\" ../tests/tstlang.rem 2022-03-23 11:44 > test-$lang-runtime.out 2>&1");
-
-my $rc = my_sys("cmp test-$lang-compiled.out test-$lang-runtime.out > /dev/null 2>&1");
-if ($rc == 0) {
-        print STDERR "Congrats!  Compiled and runtime language output matches for $lang.\n";
+my $rc = 0;
+if ($lang eq 'all') {
+        foreach my $l (sort(keys(%$language_map))) {
+                if (check($l)) {
+                        $rc = 1;
+                }
+        }
 } else {
-        print STDERR "Whoops.  Compiled and runtime language output differs for $lang.\n"
+        $rc = check($lang);
 }
+
+exit($rc);
+
+sub check
+{
+        my ($lang) = @_;
+        if (!exists($language_map->{$lang})) {
+                print STDERR "$lang is not a valid language.\n";
+                return 1;
+        }
+
+        my $flag = $language_map->{$lang};
+        print STDERR "Testing for: $lang - $flag.\n";
+        my_sys("make clean > /dev/null 2>&1") && die("make clean failed");
+        my_sys("make -j18 all LANGDEF=-DLANG=$flag > /dev/null 2>&1") && die("make all failed");
+        my_sys("./remind -q -r ../tests/tstlang.rem 2022-03-23 11:44 > test-$lang-compiled.out 2>&1");
+
+        my_sys("make clean > /dev/null 2>&1") && die("make clean failed");
+        my_sys("make -j18 all > /dev/null 2>&1") && die("make all failed");
+        my_sys("./remind -q -r -ii=\\\"../include/lang/$lang.rem\\\" ../tests/tstlang.rem 2022-03-23 11:44 > test-$lang-runtime.out 2>&1");
+
+        my $rc = my_sys("cmp test-$lang-compiled.out test-$lang-runtime.out > /dev/null 2>&1");
+        if ($rc == 0) {
+                print STDERR "Congrats!  Compiled and runtime language output matches for $lang.\n";
+        } else {
+                print STDERR "Whoops.  Compiled and runtime language output differs for $lang.\n"
+        }
+        return $rc;
+}
+
 exit(0);
 
 sub my_sys

src/config.h.in

@@ -1,25 +1,30 @@
-/* Define if utime(file, NULL) sets file's timestamp to the present.  */
-#undef HAVE_UTIME_NULL
-
-/* Define if you can safely include both <sys/time.h> and <time.h>.  */
-#undef TIME_WITH_SYS_TIME
-
 /* Define if your <sys/time.h> declares struct tm.  */
 #undef TM_IN_SYS_TIME
 
-/* Define if you have the <sys/file.h> header file.  */
-#undef HAVE_SYS_FILE_H
-
 /* Define if you have the <sys/types.h> header file.  */
 #undef HAVE_SYS_TYPES_H
 
+/* Define if you have the <sys/inotify.h> header file.  */
+#undef HAVE_SYS_INOTIFY_H
+
 /* Define if you have the <glob.h> header file */
 #undef HAVE_GLOB_H
 
+/* Define if you have <stdint.h> */
+#undef HAVE_STDINT_H
+
+#undef HAVE_STRINGS_H
+
+#undef HAVE_STRDUP
+#undef HAVE_STRCASECMP
+#undef HAVE_STRNCASECMP
+
 #undef HAVE_WCTYPE_H
 
 #undef HAVE_LOCALE_H
 
+#undef HAVE_INOTIFY_INIT1
+
 #undef HAVE_LANGINFO_H
 
 #undef HAVE_GLOB
@@ -40,4 +45,8 @@
 /* The number of bytes in a unsigned long.  */
 #undef SIZEOF_UNSIGNED_LONG
 
+#define PACKAGE_NAME "@PACKAGE_NAME@"
+#define PACKAGE_URL "@PACKAGE_URL@"
+
 #include "custom.h"
+

src/custom.h

@@ -6,7 +6,7 @@
 /*  which you can customize.                                   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -117,7 +117,7 @@
 /*---------------------------------------------------------------------*/
 /* VAL_STACK_SIZE: The size of the operand stack for expr. parsing     */
 /*---------------------------------------------------------------------*/
-#define VAL_STACK_SIZE 1000
+#define VAL_STACK_SIZE 100
 
 /*---------------------------------------------------------------------*/
 /* INCLUDE_NEST: How many nested INCLUDES do we handle?                */
@@ -166,6 +166,10 @@
 
 #define PASSTHRU_LEN 32
 
+#define MAX_RECURSION_LEVEL 1000
+
+#define MAX_FUNC_ARGS 64
+
 #define PSBEGIN "# rem2ps begin"
 #define PSEND   "# rem2ps end"
 

src/custom.h.in

@@ -6,7 +6,7 @@
 /*  which you can customize.                                   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -117,7 +117,7 @@
 /*---------------------------------------------------------------------*/
 /* VAL_STACK_SIZE: The size of the operand stack for expr. parsing     */
 /*---------------------------------------------------------------------*/
-#define VAL_STACK_SIZE 1000
+#define VAL_STACK_SIZE 100
 
 /*---------------------------------------------------------------------*/
 /* INCLUDE_NEST: How many nested INCLUDES do we handle?                */
@@ -166,6 +166,10 @@
 
 #define PASSTHRU_LEN 32
 
+#define MAX_RECURSION_LEVEL 1000
+
+#define MAX_FUNC_ARGS 64
+
 #define PSBEGIN "# rem2ps begin"
 #define PSEND   "# rem2ps end"
 

src/dorem.c

@@ -7,7 +7,7 @@
 /*  commands.                                                  */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -23,9 +23,8 @@
 #include "globals.h"
 #include "err.h"
 #include "protos.h"
-#include "expr.h"
 
-static int ParseTimeTrig (ParsePtr s, TimeTrig *tim, int save_in_globals);
+static int ParseTimeTrig (ParsePtr s, TimeTrig *tim);
 static int ParseLocalOmit (ParsePtr s, Trigger *t);
 static int ParseScanFrom (ParsePtr s, Trigger *t, int type);
 static int ParsePriority (ParsePtr s, Trigger *t);
@@ -63,7 +62,7 @@ int DoRem(ParsePtr p)
     DBufInit(&buf);
 
     /* Parse the trigger date and time */
-    if ( (r=ParseRem(p, &trig, &tim, 1)) ) {
+    if ( (r=ParseRem(p, &trig, &tim)) ) {
 	FreeTrig(&trig);
 	return r;
     }
@@ -163,6 +162,7 @@ int DoRem(ParsePtr p)
 	    if (p->expr_happened) {
 		if (p->nonconst_expr) {
 		    PurgeEchoLine("%s\n", "#!P: Next line may have expired, but contains non-constant expression");
+		    PurgeEchoLine("%s\n", "#!P: or a relative SCANFROM clause");
 		    PurgeEchoLine("%s\n", CurLine);
 		} else {
 		    PurgeEchoLine("%s\n", "#!P: Next line has expired, but contains expression...  please verify");
@@ -192,16 +192,18 @@ int DoRem(ParsePtr p)
 
     r = OK;
     if (ShouldTriggerReminder(&trig, &tim, dse, &err)) {
-	if ( (r=TriggerReminder(p, &trig, &tim, dse, 0)) ) {
+	if ( (r=TriggerReminder(p, &trig, &tim, dse, 0, NULL)) ) {
 	    FreeTrig(&trig);
 	    return r;
 	}
     } else {
         /* Parse the rest of the line to catch any potential
            expression-pasting errors */
-        while (ParseChar(p, &r, 0)) {
-            if (r != 0) {
-                break;
+        if (ParseUntriggered) {
+            while (ParseChar(p, &r, 0)) {
+                if (r != 0) {
+                    break;
+                }
             }
         }
     }
@@ -218,7 +220,7 @@ int DoRem(ParsePtr p)
 /*  trigger structure.                                         */
 /*                                                             */
 /***************************************************************/
-int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
+int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim)
 {
     register int r;
     DynamicBuffer buf;
@@ -260,10 +262,6 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
     trig->need_wkday = 0;
     trig->adj_for_last = 0;
 
-    if (save_in_globals) {
-	LastTriggerTime = NO_TIME;
-    }
-
     int parsing = 1;
     while(parsing) {
 	/* Read space-delimited string */
@@ -313,10 +311,6 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
 	    trig->m = m;
 	    trig->d = d;
 	    tim->ttime = (tok.val % MINUTES_PER_DAY);
-	    if (save_in_globals) {
-		LastTriggerTime = tim->ttime;
-		SaveLastTimeTrig(tim);
-	    }
 	    break;
 
 	case T_WkDay:
@@ -348,9 +342,19 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
 	    if (r) return r;
 	    break;
 
+        /* A time implicitly introduces an AT if AT is not explicit */
+        case T_Time:
+            DBufFree(&buf);
+            if (tim->ttime != NO_TIME) return E_TIME_TWICE;
+            tim->ttime = tok.val;
+            r = ParseTimeTrig(s, tim);
+            if (r) return r;
+	    trig->duration_days = ComputeTrigDuration(tim);
+	    break;
+
 	case T_At:
 	    DBufFree(&buf);
-	    r=ParseTimeTrig(s, tim, save_in_globals);
+	    r=ParseTimeTrig(s, tim);
 	    if (r) return r;
 	    trig->duration_days = ComputeTrigDuration(tim);
 	    break;
@@ -469,10 +473,10 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
 	    r=ParseToken(s, &buf);
 	    if (r) return r;
 	    StrnCpy(trig->omitfunc, DBufValue(&buf), VAR_NAME_LEN);
-
+            strtolower(trig->omitfunc);
 	    /* An OMITFUNC counts as a nonconst_expr! */
-	    s->expr_happened = 1;
-	    s->nonconst_expr = 1;
+            s->expr_happened = 1;
+            s->nonconst_expr = 1;
 	    DBufFree(&buf);
 	    break;
 
@@ -480,6 +484,7 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
 	    r=ParseToken(s, &buf);
 	    if(r) return r;
 	    StrnCpy(trig->warn, DBufValue(&buf), VAR_NAME_LEN);
+            strtolower(trig->warn);
 	    DBufFree(&buf);
 	    break;
 
@@ -510,9 +515,6 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
 		} else {
 		    tim->duration = NO_TIME;
 		}
-		if (save_in_globals) {
-		    SaveLastTimeTrig(tim);
-		}
 		trig->duration_days = ComputeTrigDuration(tim);
 		break;
 	    default:
@@ -524,6 +526,7 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
 	    r=ParseToken(s, &buf);
 	    if(r) return r;
 	    StrnCpy(trig->sched, DBufValue(&buf), VAR_NAME_LEN);
+            strtolower(trig->sched);
 	    DBufFree(&buf);
 	    break;
 
@@ -596,7 +599,7 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
 /*  ParseTimeTrig - parse the AT part of a timed reminder      */
 /*                                                             */
 /***************************************************************/
-static int ParseTimeTrig(ParsePtr s, TimeTrig *tim, int save_in_globals)
+static int ParseTimeTrig(ParsePtr s, TimeTrig *tim)
 {
     Token tok;
     int r;
@@ -631,11 +634,6 @@ static int ParseTimeTrig(ParsePtr s, TimeTrig *tim, int save_in_globals)
 	default:
 	    if (tim->ttime == NO_TIME) return E_EXPECT_TIME;
 
-	    /* Save trigger time in global variable */
-	    if (save_in_globals) {
-		LastTriggerTime = tim->ttime;
-		SaveLastTimeTrig(tim);
-	    }
 	    PushToken(DBufValue(&buf), s);
 	    DBufFree(&buf);
 	    return OK;
@@ -667,6 +665,9 @@ static int ParseLocalOmit(ParsePtr s, Trigger *t)
 	    break;
 
 	default:
+            if (t->localomit == NO_WD) {
+                return E_EXPECTING_WEEKDAY;
+            }
 	    PushToken(DBufValue(&buf), s);
 	    DBufFree(&buf);
 	    return OK;
@@ -861,6 +862,9 @@ static int ParseScanFrom(ParsePtr s, Trigger *t, int type)
 		tok.val = -tok.val;
 	    }
 	    FromDSE(DSEToday - tok.val, &y, &m, &d);
+            /* Don't purge reminders with a relative scanfrom */
+            s->expr_happened = 1;
+            s->nonconst_expr = 1;
 	    break;
 
 	default:
@@ -898,7 +902,7 @@ static int ParseScanFrom(ParsePtr s, Trigger *t, int type)
 /*  Trigger the reminder if it's a RUN or MSG type.            */
 /*                                                             */
 /***************************************************************/
-int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int dse, int is_queued)
+int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int dse, int is_queued, DynamicBuffer *output)
 {
     int r, y, m, d;
     char PrioExpr[VAR_NAME_LEN+25];
@@ -965,7 +969,7 @@ int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int dse, int is_queue
     }
 /* If it's a MSG-type reminder, and no -k option was used, issue the banner. */
     if ((t->typ == MSG_TYPE || t->typ == MSF_TYPE) 
-	&& !DidMsgReminder && !NextMode && !msg_command) {
+	&& !DidMsgReminder && !NextMode && !msg_command && !is_queued) {
         DidMsgReminder = 1;
 	if (!DoSubstFromString(DBufValue(&Banner), &buf,
 			       DSEToday, NO_TIME) &&
@@ -1032,11 +1036,18 @@ int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int dse, int is_queue
  	    return E_NO_MEM;
  	}
 
- 	printf("%s%s%s\n", DBufValue(&calRow), DBufValue(&pre_buf), DBufValue(&buf));
+        r = OK;
+        if (output) {
+            if (DBufPuts(output, DBufValue(&calRow)) != OK) r = E_NO_MEM;
+            if (DBufPuts(output, DBufValue(&pre_buf)) != OK) r = E_NO_MEM;
+            if (DBufPuts(output, DBufValue(&buf)) != OK) r = E_NO_MEM;
+        } else {
+            printf("%s%s%s\n", DBufValue(&calRow), DBufValue(&pre_buf), DBufValue(&buf));
+        }
 	DBufFree(&buf);
 	DBufFree(&pre_buf);
 	DBufFree(&calRow);
-	return OK;
+	return r;
     }
 
     /* Correct colors */
@@ -1132,18 +1143,27 @@ int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int dse, int is_queue
     case MSG_TYPE:
     case PASSTHRU_TYPE:
 	if (msg_command) {
-	    DoMsgCommand(msg_command, DBufValue(&buf));
+	    DoMsgCommand(msg_command, DBufValue(&buf), is_queued);
 	} else {
-	    printf("%s", DBufValue(&buf));
+            if (output) {
+                DBufPuts(output, DBufValue(&buf));
+            } else {
+                /* Add a space before "NOTE endreminder" */
+                if (IsServerMode() && !strncmp(DBufValue(&buf), "NOTE endreminder", 16)) {
+                    printf(" %s", DBufValue(&buf));
+                } else {
+                    printf("%s", DBufValue(&buf));
+                }
+            }
 	}
 	break;
 
     case MSF_TYPE:
-	FillParagraph(DBufValue(&buf));
+	FillParagraph(DBufValue(&buf), output);
 	break;
 
     case RUN_TYPE:
-	System(DBufValue(&buf));
+	System(DBufValue(&buf), is_queued);
 	break;
 
     default: /* Unknown/illegal type? */
@@ -1182,7 +1202,7 @@ int ShouldTriggerReminder(Trigger *t, TimeTrig *tim, int dse, int *err)
 	if (DontIssueAts > 1) {
 	    /* If two or more -a options, then *DO* issue ats that are in the
 	       future */
-	    if (tim->ttime < SystemTime(0) / 60) {
+	    if (tim->ttime < MinutesPastMidnight(0)) {
 		return 0;
 	    }
 	} else {
@@ -1190,29 +1210,31 @@ int ShouldTriggerReminder(Trigger *t, TimeTrig *tim, int dse, int *err)
 	}
     }
 
-    /* Don't trigger "old" timed reminders */
-/*** REMOVED...
-  if (dse == DSEToday &&
-  tim->ttime != NO_TIME &&
-  tim->ttime < SystemTime(0) / 60) return 0;
-  *** ...UNTIL HERE */
-
     /* If "infinite delta" option is chosen, always trigger future reminders */
     if (InfiniteDelta || NextMode) return 1;
 
-    /* If there's a "warn" function, it overrides any deltas */
+    /* If there's a "warn" function, it overrides any deltas except
+     * DeltaOverride*/
     if (t->warn[0] != 0) {
-	if (DeltaOffset) {
-	    if (dse <= DSEToday + DeltaOffset) {
+	if (DeltaOverride > 0) {
+	    if (dse <= DSEToday + DeltaOverride) {
 		return 1;
 	    }
 	}
 	return ShouldTriggerBasedOnWarn(t, dse, err);
     }
 
+    /* Zero delta */
+    if (DeltaOverride < 0) {
+        return dse == DSEToday;
+    }
+
     /* Move back by delta days, if any */
-    if (t->delta != NO_DELTA) {
-	if (t->delta < 0)
+    if (DeltaOverride) {
+        /* A positive DeltaOverride takes precedence over everything */
+        dse = dse - DeltaOverride;
+    } else if (t->delta != NO_DELTA) {
+        if (t->delta < 0)
 	    dse = dse + t->delta;
 	else {
 	    int iter = 0;
@@ -1237,7 +1259,7 @@ int ShouldTriggerReminder(Trigger *t, TimeTrig *tim, int dse, int *err)
     }
 
     /* Should we trigger the reminder? */
-    return (dse <= DSEToday + DeltaOffset);
+    return (dse <= DSEToday);
 }
 
 /***************************************************************/
@@ -1251,20 +1273,28 @@ int DoSatRemind(Trigger *trig, TimeTrig *tt, ParsePtr p)
 {
     int iter, dse, r, start;
     Value v;
-    char const *s;
-    char const *t;
+    expr_node *sat_node;
+    int nonconst = 0;
 
-    t = p->pos;
+    sat_node = ParseExpr(p, &r);
+    if (r != OK) {
+        return r;
+    }
+    if (!sat_node) {
+        return E_SWERR;
+    }
     iter = 0;
     start = trig->scanfrom;
     while (iter++ < MaxSatIter) {
 	dse = ComputeTriggerNoAdjustDuration(start, trig, tt, &r, 1, 0);
 	if (r) {
+            free_expr_tree(sat_node);
 	    if (r == E_CANT_TRIG) return OK; else return r;
 	}
 	if (dse != start && trig->duration_days) {
 	    dse = ComputeTriggerNoAdjustDuration(start, trig, tt, &r, 1, trig->duration_days);
 	    if (r) {
+                free_expr_tree(sat_node);
 		if (r == E_CANT_TRIG) return OK; else return r;
 	    }
 	} else if (dse == start) {
@@ -1277,13 +1307,18 @@ int DoSatRemind(Trigger *trig, TimeTrig *tt, ParsePtr p)
 	    SaveAllTriggerInfo(trig, tt, dse, tt->ttime, 1);
 	}
 	if (dse == -1) {
+            free_expr_tree(sat_node);
 	    return E_EXPIRED;
 	}
-	s = p->pos;
-	r = EvaluateExpr(p, &v);
-	t = p->pos;
-	if (r) return r;
-	if (v.type != INT_TYPE && v.type != STR_TYPE) return E_BAD_TYPE;
+        r = evaluate_expression(sat_node, NULL, &v, &nonconst);
+	if (r) {
+            free_expr_tree(sat_node);
+            return r;
+        }
+	if (v.type != INT_TYPE && v.type != STR_TYPE) {
+            free_expr_tree(sat_node);
+            return E_BAD_TYPE;
+        }
 	if ((v.type == INT_TYPE && v.v.val) ||
 	    (v.type == STR_TYPE && *v.v.str)) {
 	    AdjustTriggerForDuration(trig->scanfrom, dse, trig, tt, 1);
@@ -1308,17 +1343,17 @@ int DoSatRemind(Trigger *trig, TimeTrig *tt, ParsePtr p)
 		}
 		fprintf(ErrFp, "\n");
 	    }
+            free_expr_tree(sat_node);
 	    return OK;
 	}
-	p->pos = s;
 	if (dse+trig->duration_days < start) {
 	    start++;
 	} else {
 	    start = dse+trig->duration_days+1;
 	}
     }
-    p->pos = t;
     LastTrigValid = 0;
+    free_expr_tree(sat_node);
     return E_CANT_TRIG;
 }
 
@@ -1368,7 +1403,7 @@ static int ParsePriority(ParsePtr s, Trigger *t)
 /*  Execute the '-k' command, escaping shell chars in message. */
 /*                                                             */
 /***************************************************************/
-int DoMsgCommand(char const *cmd, char const *msg)
+int DoMsgCommand(char const *cmd, char const *msg, int is_queued)
 {
     int r;
     int i, l;
@@ -1405,7 +1440,7 @@ int DoMsgCommand(char const *cmd, char const *msg)
     }
     r = OK;
 
-    System(DBufValue(&execBuffer));
+    System(DBufValue(&execBuffer), is_queued);
 
 finished:
     DBufFree(&buf);

src/dosubst.c

@@ -6,13 +6,13 @@
 /*  reminders are triggered.                                   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
 
 #include "config.h"
-#include "expr.h"
+#include "types.h"
 #define L_IN_DOSUBST
 #include <stdio.h>
 #include <string.h>
@@ -20,7 +20,6 @@
 
 #include <stdlib.h>
 
-#include "types.h"
 #include "globals.h"
 #include "err.h"
 #include "protos.h"
@@ -46,11 +45,11 @@
 int DoSubst(ParsePtr p, DynamicBuffer *dbuf, Trigger *t, TimeTrig *tt, int dse, int mode)
 {
     int diff = dse - DSEToday;
-    int curtime = SystemTime(0) / 60;
+    int curtime = MinutesPastMidnight(0);
     int err, done;
     int c;
     int d, m, y;
-    int tim = tt->ttime;
+    int tim = NO_TIME;
     int h, min, hh, ch, cmin, chh;
     int i;
     char const *pm, *cpm;
@@ -72,6 +71,9 @@ int DoSubst(ParsePtr p, DynamicBuffer *dbuf, Trigger *t, TimeTrig *tt, int dse,
 
     FromDSE(dse, &y, &m, &d);
 
+    if (tt) {
+        tim = tt->ttime;
+    }
     if (tim == NO_TIME) tim = curtime;
     tdiff = tim - curtime;
     adiff = ABS(tdiff);
@@ -239,7 +241,7 @@ int DoSubst(ParsePtr p, DynamicBuffer *dbuf, Trigger *t, TimeTrig *tt, int dse,
                     break;
                 }
                 if (i < 64) {
-                    *ss++ = c;
+                    *ss++ = tolower(c);
                     *ss = 0;
                     i++;
                 }
@@ -266,10 +268,10 @@ int DoSubst(ParsePtr p, DynamicBuffer *dbuf, Trigger *t, TimeTrig *tt, int dse,
             continue;
         }
 	done = 0;
-        snprintf(uf, sizeof(uf), "subst_%c", c);
+        snprintf(uf, sizeof(uf), "subst_%c", tolower(c));
         if (UserFuncExists(uf) == 3) {
             snprintf(s, sizeof(s), "subst_%c(%d,'%04d-%02d-%02d',%02d:%02d)",
-                     c, altmode ? 1 : 0, y, m+1, d, h, min);
+                     tolower(c), altmode ? 1 : 0, y, m+1, d, h, min);
             expr = (char const *) s;
             r = EvalExpr(&expr, &v, NULL);
             if (r == OK) {
@@ -341,10 +343,10 @@ int DoSubst(ParsePtr p, DynamicBuffer *dbuf, Trigger *t, TimeTrig *tt, int dse,
 
 
         if (!done) {
-            snprintf(uf, sizeof(uf), "subst_%cx", c);
+            snprintf(uf, sizeof(uf), "subst_%cx", tolower(c));
             if (UserFuncExists(uf) == 3) {
                 snprintf(s, sizeof(s), "subst_%cx(%d,'%04d-%02d-%02d',%02d:%02d)",
-                         c, altmode ? 1 : 0, y, m+1, d, h, min);
+                         tolower(c), altmode ? 1 : 0, y, m+1, d, h, min);
                 expr = (char const *) s;
                 r = EvalExpr(&expr, &v, NULL);
                 if (r == OK) {
@@ -894,7 +896,7 @@ int DoSubstFromString(char const *source, DynamicBuffer *dbuf,
     int r;
 
     if (dse == NO_DATE) dse=DSEToday;
-    if (tim == NO_TIME) tim=SystemTime(0)/60;
+    if (tim == NO_TIME) tim=MinutesPastMidnight(0);
     CreateParser(source, &tempP);
     tempP.allownested = 0;
     tempTrig.typ = MSG_TYPE;

src/dynbuf.c

@@ -6,7 +6,7 @@
 /*  buffers.                                                   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -124,7 +124,9 @@ int DBufPuts(DynamicBuffer *dbuf, char const *str)
 **********************************************************************/
 void DBufFree(DynamicBuffer *dbuf)
 {
-    if (dbuf->buffer != dbuf->staticBuf) free(dbuf->buffer);
+    if (dbuf->buffer != NULL && dbuf->buffer != dbuf->staticBuf) {
+        free(dbuf->buffer);
+    }
     DBufInit(dbuf);
 }
 

src/dynbuf.h

@@ -5,7 +5,7 @@
 /*  Declaration of functions for manipulating dynamic buffers  */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/

src/err.h

@@ -5,7 +5,7 @@
 /*  Error definitions.                                         */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -121,6 +121,11 @@
 #define E_STRING_TOO_LONG   101
 #define E_TIME_TWICE        102
 #define E_DURATION_NO_AT    103
+#define E_EXPECTING_WEEKDAY 104
+#define E_REPEATED_ARG      105
+#define E_EXPR_DISABLED     106
+#define E_TIME_EXCEEDED     107
+
 #ifdef MK_GLOBALS
 #undef EXTERN
 #define EXTERN
@@ -129,115 +134,123 @@
 #define EXTERN extern
 #endif
 
+#define STR(X) STR2(X)
+#define STR2(X) #X
+
+
 #ifndef L_ERR_OVERRIDE
 EXTERN char *ErrMsg[]
 
 #ifdef MK_GLOBALS
 = {
-    "Ok",
-    "Missing ']'",
-    "Missing quote",
-    "Expression too complex - too many operators",
-    "Expression too complex - too many operands",
-    "Missing ')'",
-    "Undefined function",
-    "Illegal character",
-    "Expecting binary operator",
-    "Out of memory",
-    "Ill-formed number",
-    "Op stack underflow - internal error",
-    "Va stack underflow - internal error",
-    "Can't coerce",
-    "Type mismatch",
-    "Date overflow",
-    "Stack error - internal error",
-    "Division by zero",
-    "Undefined variable",
-    "Unexpected end of line",
-    "Unexpected end of file",
-    "I/O error",
-    "Line too long",
-    "Internal error",
-    "Bad date specification",
-    "Not enough arguments",
-    "Too many arguments",
-    "Ill-formed time",
-    "Number too high",
-    "Number too low",
-    "Can't open file",
-    "INCLUDE nested too deeply",
-    "Parse error",
-    "Can't compute trigger",
-    "Too many nested IFs",
-    "ELSE with no matching IF",
-    "ENDIF with no matching IF",
-    "Can't OMIT every weekday",
-    "Extraneous token(s) on line",
-    "POP-OMIT-CONTEXT without matching PUSH-OMIT-CONTEXT",
-    "RUN disabled",
-    "Domain error",
-    "Invalid identifier",
-    "Recursive function call detected",
-    "",
-    "Cannot modify system variable",
-    "C library function can't represent date/time",
-    "Attempt to redefine built-in function",
-    "Can't nest function definition in expression",
-    "Must fully specify date to use repeat factor",
-    "Year specified twice",
-    "Month specified twice",
-    "Day specified twice",
-    "Unknown token",
-    "Must specify month in OMIT command",
-    "Too many partial OMITs",
-    "Too many full OMITs",
-    "Warning: PUSH-OMIT-CONTEXT without matching POP-OMIT-CONTEXT",
-    "Error reading",
-    "Expecting end-of-line",
-    "Invalid Hebrew date",
-    "IIF needs odd number of arguments",
-    "Warning: Missing ENDIF",
-    "Expecting comma",
-    "Weekday specified twice",
-    "Only use one of BEFORE, AFTER or SKIP",
-    "Can't nest MSG, MSF, RUN, etc. in expression",
-    "Repeat value specified twice",
-    "Delta value specified twice",
-    "Back value specified twice",
-    "ONCE keyword used twice. (Hah.)",
-    "Expecting time after AT",
-    "THROUGH/UNTIL keyword used twice",
-    "Incomplete date specification",
-    "FROM/SCANFROM keyword used twice",
-    "Variable",
-    "Value",
-    "*UNDEFINED*",
-    "Entering UserFN",
-    "Leaving UserFN",
-    "Expired",
-    "fork() failed - can't do queued reminders",
-    "Can't access file",
-    "Illegal system date: Year is less than %d\n",
-    "Unknown debug flag '%c'\n",
-    "Unknown option '%c'\n",
-    "Unknown user '%s'\n",
-    "Could not change gid to %d\n",
-    "Could not change uid to %d\n",
-    "Out of memory for environment\n",
-    "Missing '=' sign",
-    "Missing variable name",
-    "Missing expression",
-    "Can't reset access date of %s\n",
-    "Remind: '-i' option: %s\n",
-    "No reminders.",
-    "%d reminder(s) queued for later today.\n",
-    "Expecting number",
-    "Bad function in WARN clause",
-    "Can't convert between time zones",
-    "No files matching *.rem",
-    "String too long",
-    "Time specified twice",
-    "Cannot specify DURATION without specifying AT"
+/* OK */                  "Ok",
+/* E_MISS_END */          "Missing ']'",
+/* E_MISS_QUOTE */        "Missing quote",
+/* E_OP_STK_OVER */       "Expression too complex",
+/* E_VA_STK_OVER */       "Expression too complex - too many operands",
+/* E_MISS_RIGHT_PAREN */  "Missing ')'",
+/* E_UNDEF_FUNC */        "Undefined function",
+/* E_ILLEGAL_CHAR */      "Illegal character",
+/* E_EXPECTING_BINOP */   "Expecting binary operator",
+/* E_NO_MEM */            "Out of memory",
+/* E_BAD_NUMBER */        "Ill-formed number",
+/* E_OP_STK_UNDER */      "Op stack underflow - internal error",
+/* E_VA_STK_UNDER */      "Va stack underflow - internal error",
+/* E_CANT_COERCE */       "Can't coerce",
+/* E_BAD_TYPE */          "Type mismatch",
+/* E_DATE_OVER */         "Date overflow",
+/* E_STACK_ERR */         "Stack error - internal error",
+/* E_DIV_ZERO */          "Division by zero",
+/* E_NOSUCH_VAR */        "Undefined variable",
+/* E_EOLN */              "Unexpected end of line",
+/* E_EOF */               "Unexpected end of file",
+/* E_IO_ERR */            "I/O error",
+/* E_LINE_2_LONG */       "Line too long",
+/* E_SWERR */             "Internal error",
+/* E_BAD_DATE */          "Bad date specification",
+/* E_2FEW_ARGS */         "Not enough arguments",
+/* E_2MANY_ARGS */        "Too many arguments",
+/* E_BAD_TIME */          "Ill-formed time",
+/* E_2HIGH */             "Number too high",
+/* E_2LOW */              "Number too low",
+/* E_CANT_OPEN */         "Can't open file",
+/* E_NESTED_INCLUDE */    "INCLUDE nested too deeply (max. " STR(INCLUDE_NEST) ")",
+/* E_PARSE_ERR */         "Parse error",
+/* E_CANT_TRIG */         "Can't compute trigger",
+/* E_NESTED_IF */         "Too many nested IFs",
+/* E_ELSE_NO_IF */        "ELSE with no matching IF",
+/* E_ENDIF_NO_IF */       "ENDIF with no matching IF",
+/* E_2MANY_LOCALOMIT */   "Can't OMIT every weekday",
+/* E_EXTRANEOUS_TOKEN */  "Extraneous token(s) on line",
+/* E_POP_NO_PUSH */       "POP-OMIT-CONTEXT without matching PUSH-OMIT-CONTEXT",
+/* E_RUN_DISABLED */      "RUN disabled",
+/* E_DOMAIN_ERR */        "Domain error",
+/* E_BAD_ID */            "Invalid identifier",
+/* E_RECURSIVE */         "Too many recursive function calls",
+/* E_PARSE_AS_REM */      "",
+/* E_CANT_MODIFY */       "Cannot modify system variable",
+/* E_MKTIME_PROBLEM */    "C library function can't represent date/time",
+/* E_REDEF_FUNC */        "Attempt to redefine built-in function",
+/* E_CANTNEST_FDEF */     "Can't nest function definition in expression",
+/* E_REP_FULSPEC */       "Must fully specify date to use repeat factor",
+/* E_YR_TWICE */          "Year specified twice",
+/* E_MON_TWICE */         "Month specified twice",
+/* E_DAY_TWICE */         "Day specified twice",
+/* E_UNKNOWN_TOKEN */     "Unknown token",
+/* E_SPEC_MON */          "Must specify month in OMIT command",
+/* E_2MANY_PART */        "Too many partial OMITs (max. " STR(MAX_PARTIAL_OMITS) ")",
+/* E_2MANY_FULL */        "Too many full OMITs (max. " STR(MAX_FULL_OMITS) ")",
+/* E_PUSH_NOPOP */        "Warning: PUSH-OMIT-CONTEXT without matching POP-OMIT-CONTEXT",
+/* E_ERR_READING */       "Error reading",
+/* E_EXPECTING_EOL */     "Expecting end-of-line",
+/* E_BAD_HEBDATE */       "Invalid Hebrew date",
+/* E_IIF_ODD */           "IIF needs odd number of arguments",
+/* E_MISS_ENDIF */        "Warning: Missing ENDIF",
+/* E_EXPECT_COMMA */      "Expecting comma",
+/* E_WD_TWICE */          "Weekday specified twice",
+/* E_SKIP_ERR */          "Only use one of BEFORE, AFTER or SKIP",
+/* E_CANT_NEST_RTYPE */   "Can't nest MSG, MSF, RUN, etc. in expression",
+/* E_REP_TWICE */         "Repeat value specified twice",
+/* E_DELTA_TWICE */       "Delta value specified twice",
+/* E_BACK_TWICE */        "Back value specified twice",
+/* E_ONCE_TWICE */        "ONCE keyword used twice. (Hah.)",
+/* E_EXPECT_TIME */       "Expecting time after AT",
+/* E_UNTIL_TWICE */       "THROUGH/UNTIL keyword used twice",
+/* E_INCOMPLETE */        "Incomplete date specification",
+/* E_SCAN_TWICE */        "FROM/SCANFROM keyword used twice",
+/* E_VAR */               "Variable",
+/* E_VAL */               "Value",
+/* E_UNDEF */             "*UNDEFINED*",
+/* E_ENTER_FUN */         "Entering UserFN",
+/* E_LEAVE_FUN */         "Leaving UserFN",
+/* E_EXPIRED */           "Expired",
+/* E_CANTFORK */          "fork() failed - can't do queued reminders",
+/* E_CANTACCESS */        "Can't access file",
+/* M_BAD_SYS_DATE */      "Illegal system date: Year is less than %d\n",
+/* M_BAD_DB_FLAG */       "Unknown debug flag '%c'\n",
+/* M_BAD_OPTION */        "Unknown option '%c'\n",
+/* M_BAD_USER */          "Unknown user '%s'\n",
+/* M_NO_CHG_GID */        "Could not change gid to %d\n",
+/* M_NO_CHG_UID */        "Could not change uid to %d\n",
+/* M_NOMEM_ENV */         "Out of memory for environment\n",
+/* E_MISS_EQ */           "Missing '=' sign",
+/* E_MISS_VAR */          "Missing variable name",
+/* E_MISS_EXPR */         "Missing expression",
+/* M_CANTSET_ACCESS */    "Can't reset access date of %s\n",
+/* M_I_OPTION */          "Remind: '-i' option: %s\n",
+/* E_NOREMINDERS */       "No reminders.",
+/* M_QUEUED */            "%d reminder(s) queued for later today.\n",
+/* E_EXPECTING_NUMBER */  "Expecting number",
+/* M_BAD_WARN_FUNC */     "Bad function in WARN clause",
+/* E_CANT_CONVERT_TZ */   "Can't convert between time zones",
+/* E_NO_MATCHING_REMS */  "No files matching *.rem",
+/* E_STRING_TOO_LONG */   "String too long",
+/* E_TIME_TWICE */        "Time specified twice",
+/* E_DURATION_NO_AT */    "Cannot specify DURATION without specifying AT",
+/* E_EXPECTING_WEEKDAY */ "Expecting weekday name",
+/* E_REPEATED_ARG */      "Duplicate argument name",
+/* E_EXPR_DISABLED */     "Expression evaluation is disabled",
+/* E_TIME_EXCEEDED */     "Time limit for expression evaluation exceeded",
 }
 #endif /* MK_GLOBALS */
 ;

src/expr.h

@@ -1,65 +0,0 @@
-/***************************************************************/
-/*                                                             */
-/*  EXPR.H                                                     */
-/*                                                             */
-/*  Contains a few definitions used by expression evaluator.   */
-/*                                                             */
-/*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
-/*  SPDX-License-Identifier: GPL-2.0-only                      */
-/*                                                             */
-/***************************************************************/
-
-/* Define the types of values */
-#define ERR_TYPE      0
-#define INT_TYPE      1
-#define TIME_TYPE     2
-#define DATE_TYPE     3
-#define STR_TYPE      4
-#define DATETIME_TYPE 5
-#define SPECIAL_TYPE  6 /* Only for system variables */
-
-/* Define stuff for parsing expressions */
-#define BEG_OF_EXPR '['
-#define END_OF_EXPR ']'
-#define COMMA ','
-
-#define UN_OP 0  /* Unary operator */
-#define BIN_OP 1 /* Binary Operator */
-#define FUNC 2   /* Function */
-
-/* Make the pushing and popping of values and operators in-line code
-   for speed.  BEWARE:  These macros invoke return if an error happens ! */
-
-#define PushOpStack(op) \
-if (OpStackPtr >= OP_STACK_SIZE) \
-return E_OP_STK_OVER; \
-else \
-OpStack[OpStackPtr++] = (op)
-
-#define PopOpStack(op) \
-if (OpStackPtr <= 0) \
-return E_OP_STK_UNDER; \
-else \
-(op) = OpStack[--OpStackPtr]
-
-#define PushValStack(val) \
-if (ValStackPtr >= VAL_STACK_SIZE) \
-return E_VA_STK_OVER; \
-else \
-ValStack[ValStackPtr++] = (val)
-
-#define PopValStack(val) \
-if (ValStackPtr <= 0) \
-return E_VA_STK_UNDER; \
-else \
-(val) = ValStack[--ValStackPtr]
-
-/* These functions are in utils.c and are used to detect overflow
-   in various arithmetic operators.  They have to be in separate
-   functions with extern linkage to defeat compiler optimizations
-   that would otherwise break the overflow checks. */
-extern int _private_mul_overflow(int a, int b);
-extern int _private_add_overflow(int a, int b);
-extern int _private_sub_overflow(int a, int b);
-

src/files.c

@@ -7,7 +7,7 @@
 /*  files.                                                     */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -15,7 +15,7 @@
 #include "config.h"
 
 #include <stdio.h>
-
+#include <fcntl.h>
 #include <string.h>
 #include <errno.h>
 #include <ctype.h>
@@ -42,8 +42,8 @@
 
 
 /* Convenient macros for closing files */
-#define FCLOSE(fp) (((fp)&&((fp)!=stdin)) ? (fclose(fp),(fp)=NULL) : ((fp)=NULL))
-#define PCLOSE(fp) (((fp)&&((fp)!=stdin)) ? (pclose(fp),(fp)=NULL) : ((fp)=NULL))
+#define FCLOSE(fp) ((((fp)!=stdin)) ? (fclose(fp),(fp)=NULL) : ((fp)=NULL))
+#define PCLOSE(fp) ((((fp)!=stdin)) ? (pclose(fp),(fp)=NULL) : ((fp)=NULL))
 
 /* Define the structures needed by the file caching system */
 typedef struct cache {
@@ -100,6 +100,22 @@ static int CheckSafety (void);
 static int CheckSafetyAux (struct stat *statbuf);
 static int PopFile (void);
 static int IncludeCmd(char const *);
+
+void set_cloexec(FILE *fp)
+{
+    int flags;
+    int fd;
+    if (fp) {
+        fd = fileno(fp);
+        flags = fcntl(fd, F_GETFD);
+        if (flags >= 0) {
+            flags |= FD_CLOEXEC;
+            fcntl(fd, F_SETFD, flags);
+        }
+    }
+}
+
+
 static void OpenPurgeFile(char const *fname, char const *mode)
 {
     DynamicBuffer fname_buf;
@@ -123,6 +139,7 @@ static void OpenPurgeFile(char const *fname, char const *mode)
     if (!PurgeFP) {
 	fprintf(ErrFp, "Cannot open `%s' for writing: %s\n", DBufValue(&fname_buf), strerror(errno));
     }
+    set_cloexec(PurgeFP);
     DBufFree(&fname_buf);
 }
 
@@ -327,6 +344,7 @@ int OpenFile(char const *fname)
 	}
     } else {
 	fp = fopen(fname, "r");
+        set_cloexec(fp);
 	if (DebugFlag & DB_TRACE_FILES) {
 	    fprintf(ErrFp, "Reading `%s': Opening file on disk\n", fname);
 	}
@@ -346,6 +364,7 @@ int OpenFile(char const *fname)
 	    if (strcmp(fname, "-")) {
 		fp = fopen(fname, "r");
 		if (!fp || !CheckSafety()) return E_CANT_OPEN;
+                set_cloexec(fp);
 		if (PurgeMode) OpenPurgeFile(fname, "w");
 	    } else {
 		fp = stdin;
@@ -542,6 +561,7 @@ static int PopFile(void)
 	if (strcmp(i->filename, "-")) {
 	    fp = fopen(i->filename, "r");
 	    if (!fp || !CheckSafety()) return E_CANT_OPEN;
+            set_cloexec(fp);
 	    if (PurgeMode) OpenPurgeFile(i->filename, "a");
 	} else {
 	    fp = stdin;

src/globals.c

@@ -8,7 +8,7 @@
 /*  globals.h and err.h                                        */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/

src/globals.h

@@ -23,6 +23,7 @@
 #define INIT(var, val) var
 #endif
 
+#include <signal.h>
 #ifdef HAVE_SYS_TYPES_H
 #include <sys/types.h>
 #endif
@@ -39,7 +40,7 @@ EXTERN  FILE *ErrFp;
 #define IsLeapYear(y) (((y) % 4) ? 0 : ((!((y) % 100) && ((y) % 400)) ? 0 : 1 ))
 #define DaysInMonth(m, y) ((m) != 1 ? MonthDays[m] : 28 + IsLeapYear(y))
 
-#define DestroyValue(x) (void) (((x).type == STR_TYPE && (x).v.str) ? (free((x).v.str),(x).v.str = NULL,(x).type = ERR_TYPE) : 0)
+#define DestroyValue(x) do { if ((x).type == STR_TYPE && (x).v.str) { free((x).v.str); (x).v.str = NULL; } (x).type = ERR_TYPE; } while (0)
 
 EXTERN	int	DSEToday;
 EXTERN	int	RealToday;
@@ -50,6 +51,7 @@ EXTERN  int	LineNo;
 EXTERN  int     FreshLine;
 EXTERN  uid_t   TrustedUsers[MAX_TRUSTED_USERS];
 
+EXTERN  INIT(   int     MaxLateMinutes, 0);
 EXTERN  INIT(   int     NumTrustedUsers, 0);
 EXTERN  INIT(   char    const *MsgCommand, NULL);
 EXTERN  INIT(   char    const *QueuedMsgCommand, NULL);
@@ -70,15 +72,19 @@ EXTERN  INIT(	int 	Hush, 0);
 EXTERN  INIT(	int 	NextMode, 0);
 EXTERN  INIT(	int 	InfiniteDelta, 0);
 EXTERN  INIT(   int     DefaultTDelta, 0);
-EXTERN  INIT(   int     DeltaOffset, 0);
+EXTERN  INIT(   int     DeltaOverride, 0);
 EXTERN  INIT(   int     RunDisabled, 0);
+EXTERN  INIT(   int     ExpressionEvaluationDisabled, 0);
+EXTERN  INIT(   int     ExpressionEvaluationTimeLimit, 0);
+EXTERN  INIT(   volatile sig_atomic_t ExpressionTimeLimitExceeded, 0);
 EXTERN  INIT(   int     IgnoreOnce, 0);
 EXTERN  INIT(   int     SortByTime, 0);
 EXTERN  INIT(   int     SortByDate, 0);
 EXTERN	INIT(	int	SortByPrio, 0);
 EXTERN  INIT(   int     UntimedBeforeTimed, 0);
 EXTERN	INIT(	int	DefaultPrio, NO_PRIORITY);
-EXTERN  INIT(   long    SysTime, -1L);
+EXTERN  INIT(   int     SysTime, -1);
+EXTERN  INIT(   int     ParseUntriggered, 1);
 
 EXTERN	char	const *InitialFile;
 EXTERN	int	FileAccessDate;
@@ -90,6 +96,7 @@ EXTERN  INIT(	int 	DontQueue, 0);
 EXTERN  INIT(   int     NumQueued, 0);
 EXTERN  INIT(   int     DontIssueAts, 0);
 EXTERN  INIT(   int     Daemon, 0);
+EXTERN  INIT(   int     DaemonJSON, 0);
 EXTERN  INIT(   char    DateSep, DATESEP);
 EXTERN  INIT(   char    TimeSep, TIMESEP);
 EXTERN  INIT(   char    DateTimeSep, DATETIMESEP);
@@ -100,7 +107,7 @@ EXTERN  INIT(   int     SynthesizeTags, 0);
 EXTERN  INIT(   int     ScFormat, SC_AMPM);
 EXTERN  INIT(   int     MaxSatIter, 1000);
 EXTERN  INIT(   int     MaxStringLen, MAX_STR_LEN);
-EXTERN  INIT(	char	*FileName, NULL);
+EXTERN  INIT(	char    *FileName, NULL);
 EXTERN	INIT(	int	UseStdin, 0);
 EXTERN  INIT(   int     PurgeMode, 0);
 EXTERN  INIT(   int     PurgeIncludeDepth, 0);
@@ -111,7 +118,7 @@ EXTERN  INIT(   int     LastTrigValid, 0);
 EXTERN  Trigger  LastTrigger;
 EXTERN  TimeTrig LastTimeTrig;
 EXTERN  INIT(   int     LastTriggerDate, 0);
-EXTERN  INIT(   int     LastTriggerTime, 0);
+EXTERN  INIT(   int     LastTriggerTime, NO_TIME);
 EXTERN  INIT(   int     ShouldCache, 0);
 EXTERN  char const   *CurLine;
 EXTERN  INIT(   int     NumTriggered, 0);
@@ -155,6 +162,12 @@ EXTERN	INIT(	char	  *EndSentIg, "\"')]}>");
 EXTERN DynamicBuffer Banner;
 EXTERN DynamicBuffer LineBuffer;
 EXTERN DynamicBuffer ExprBuf;
+
+/* User-func recursion level */
+EXTERN  INIT(   unsigned int FuncRecursionLevel, 0);
+
+extern int NumFullOmits, NumPartialOmits;
+
 /* List of months */
 EXTERN  char    *EnglishMonthName[]
 #ifdef MK_GLOBALS

src/hbcal.c

@@ -5,7 +5,7 @@
 /*  Support for the Hebrew calendar                            */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /*  Derived from code written by Amos Shapir in 1978; revised  */
@@ -20,6 +20,12 @@
 #include "protos.h"
 #include "globals.h"
 #include "err.h"
+#include <string.h>
+
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+
 #define HOUR 1080L
 #define DAY  (24L*HOUR)
 #define WEEK (7L*DAY)

src/init.c

@@ -7,7 +7,7 @@
 /*  in normal mode.                                            */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -19,16 +19,17 @@
 #include <stdio.h>
 #include <string.h>
 #include <ctype.h>
-
+#include <time.h>
 #include <stdlib.h>
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <errno.h>
-
+#include <poll.h>
 #include <pwd.h>
 #include <unistd.h>
 #include <sys/ioctl.h>
+#include <termios.h>
 
 #ifdef HAVE_INITGROUPS
 #include <grp.h>
@@ -37,9 +38,16 @@
 #include "types.h"
 #include "globals.h"
 #include "protos.h"
-#include "expr.h"
 #include "err.h"
 
+static int should_guess_terminal_background = 1;
+
+static void guess_terminal_background(int *r, int *g, int *b);
+static int tty_init(int fd);
+static void tty_raw(int fd);
+static void tty_reset(int fd);
+
+static void ProcessLongOption(char const *arg);
 /***************************************************************
  *
  *  Command line options recognized:
@@ -69,6 +77,7 @@
  *             t = Display trigger dates
  *             v = Dump variables at end
  *             l = Display entire line in error messages
+ *             s = Display expression-parsing stack usage before exit
  *  -e       = Send messages normally sent to stderr to stdout instead
  *  -z[n]    = Daemon mode waking up every n (def 1) minutes.
  *  -bn      = Time format for cal (0, 1, or 2)
@@ -219,7 +228,7 @@ void InitRemind(int argc, char const *argv[])
 	}
     } else {
         fprintf(stderr, "Invoked with a NULL argv[0]; bailing because that's just plain bizarre.\n");
-        exit(1);
+        exit(EXIT_FAILURE);
     }
 
     /* Parse the command-line options */
@@ -243,6 +252,11 @@ void InitRemind(int argc, char const *argv[])
                 while(*arg) arg++;
                 break;
 
+            case '-':
+                ProcessLongOption(arg);
+                while(*arg) arg++;
+                break;
+
 	    case '@':
 		UseVTColors = 1;
 		if (*arg) {
@@ -259,16 +273,24 @@ void InitRemind(int argc, char const *argv[])
 		if (*arg == ',') {
 		    arg++;
                     if (*arg != ',') {
-                        PARSENUM(x, arg);
-                        if (x == 0) {
-                            TerminalBackground = TERMINAL_BACKGROUND_DARK;
-                        } else if (x == 1) {
-                            TerminalBackground = TERMINAL_BACKGROUND_LIGHT;
-                        } else if (x == 2) {
-                            TerminalBackground = TERMINAL_BACKGROUND_UNKNOWN;
+                        if (*arg == 't') {
+                            arg++;
+                            should_guess_terminal_background = 2;
                         } else {
-                            fprintf(ErrFp, "%s: -@n,m,b: m must be 0, 1 or 2 (assuming 2)\n",
-                                    argv[0]);
+                            PARSENUM(x, arg);
+                            if (x == 0) {
+                                should_guess_terminal_background = 0;
+                                TerminalBackground = TERMINAL_BACKGROUND_DARK;
+                            } else if (x == 1) {
+                                should_guess_terminal_background = 0;
+                                TerminalBackground = TERMINAL_BACKGROUND_LIGHT;
+                            } else if (x == 2) {
+                                should_guess_terminal_background = 0;
+                                TerminalBackground = TERMINAL_BACKGROUND_UNKNOWN;
+                            } else {
+                                fprintf(ErrFp, "%s: -@n,m,b: m must be t, 0, 1 or 2 (assuming 2)\n",
+                                        argv[0]);
+                            }
                         }
                     }
 		}
@@ -341,10 +363,15 @@ void InitRemind(int argc, char const *argv[])
                 } else if (!*arg) {
 		    InfiniteDelta = 1;
 		} else {
-		    PARSENUM(DeltaOffset, arg);
-		    if (DeltaOffset < 0) {
-			DeltaOffset = 0;
-		    }
+                    if (*arg == 'z') {
+                        DeltaOverride = -1;
+                        arg++;
+                    } else {
+                        PARSENUM(DeltaOverride, arg);
+                        if (DeltaOverride < 0) {
+                            DeltaOverride = 0;
+                        }
+                    }
 		}
 		break;
 	    case 'e':
@@ -398,7 +425,11 @@ void InitRemind(int argc, char const *argv[])
 	    case 'z':
 	    case 'Z':
 		DontFork = 1;
-		if (*arg == '0') {
+                if (*arg == 'j' || *arg == 'J') {
+                    while (*arg) arg++;
+                    Daemon = -1;
+                    DaemonJSON = 1;
+                } else if (*arg == '0') {
 		    PARSENUM(Daemon, arg);
 		    if (Daemon == 0) Daemon = -1;
 		    else if (Daemon < 1) Daemon = 1;
@@ -532,7 +563,7 @@ void InitRemind(int argc, char const *argv[])
                         arg++;
                         /* -wt means get width from /dev/tty */
                         ttyfd = open("/dev/tty", O_RDONLY);
-                        if (!ttyfd) {
+                        if (ttyfd < 0) {
                             fprintf(stderr, "%s: `-wt': Cannot open /dev/tty: %s\n",
                                     argv[0], strerror(errno));
                         } else {
@@ -543,7 +574,12 @@ void InitRemind(int argc, char const *argv[])
                         PARSENUM(CalWidth, arg);
                         if (CalWidth != 0 && CalWidth < 71) CalWidth = 71;
                         if (CalWidth == 0) {
-                            CalWidth = -1;
+                            /* Cal width of 0 means obtain from stdout */
+                            if (isatty(STDOUT_FILENO)) {
+                                InitCalWidthAndFormWidth(STDOUT_FILENO);
+                            } else {
+                                CalWidth = 80;
+                            }
                         }
                         FormWidth = CalWidth - 8;
                         if (FormWidth < 20) FormWidth = 20;
@@ -568,6 +604,7 @@ void InitRemind(int argc, char const *argv[])
 	    case 'D':
 		while (*arg) {
 		    switch(*arg++) {
+                    case 's': case 'S': DebugFlag |= DB_PARSE_EXPR;  break;
 		    case 'e': case 'E': DebugFlag |= DB_ECHO_LINE;   break;
 		    case 'x': case 'X': DebugFlag |= DB_PRTEXPR;     break;
 		    case 't': case 'T': DebugFlag |= DB_PRTTRIG;     break;
@@ -721,7 +758,7 @@ void InitRemind(int argc, char const *argv[])
 
 /* Figure out the offset from UTC */
     if (CalculateUTC)
-	(void) CalcMinsFromUTC(DSEToday, SystemTime(0)/60,
+	(void) CalcMinsFromUTC(DSEToday, MinutesPastMidnight(0),
 			       &MinsFromUTC, NULL);
 }
 
@@ -735,7 +772,7 @@ void InitRemind(int argc, char const *argv[])
 #ifndef L_USAGE_OVERRIDE
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2023 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2024 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> BETA VERSION <<<<\n");
 #endif
@@ -768,6 +805,7 @@ void Usage(void)
     fprintf(ErrFp, " -m     Start calendar with Monday rather than Sunday\n");
     fprintf(ErrFp, " -y     Synthesize tags for tagless reminders\n");
     fprintf(ErrFp, " -j[n]  Run in 'purge' mode.  [n = INCLUDE depth]\n");
+    fprintf(ErrFp, "\nRemind home page: %s\n", PACKAGE_URL);
     exit(EXIT_FAILURE);
 }
 #endif /* L_USAGE_OVERRIDE */
@@ -887,7 +925,12 @@ static void InitializeVar(char const *str)
     r = 0;
     while (*str && *str != '=') {
 	if (r < VAR_NAME_LEN) {
-	    varname[r++] = *str;
+            if (isalpha(*str) || *str == '_' || (r > 0 && *str == '(') || (r == 0 && *str == '$') || (r > 0 && isdigit(*str))) {
+                varname[r++] = *str;
+            } else {
+                fprintf(ErrFp, ErrMsg[M_I_OPTION], ErrMsg[E_ILLEGAL_CHAR]);
+                return;
+            }
 	}
 	if (*str == '(') {
 	    /* Do a function definition if we see a paren */
@@ -897,10 +940,28 @@ static void InitializeVar(char const *str)
 	str++;
     }
     varname[r] = 0;
-    if (!*str) {
-	fprintf(ErrFp, ErrMsg[M_I_OPTION], ErrMsg[E_MISS_EQ]);
+    if (!*varname) {
+	fprintf(ErrFp, ErrMsg[M_I_OPTION], ErrMsg[E_MISS_VAR]);
 	return;
     }
+    if (!*str) {
+        /* Setting a system var does require =expr on the commandline */
+        if (*varname == '$') {
+            fprintf(ErrFp, ErrMsg[M_I_OPTION], ErrMsg[E_MISS_EQ]);
+            return;
+        }
+        val.type = INT_TYPE;
+        val.v.val = 0;
+        r = SetVar(varname, &val);
+        if (!r) {
+            r = PreserveVar(varname);
+        }
+        if (r) {
+            fprintf(ErrFp, ErrMsg[M_I_OPTION], ErrMsg[r]);
+        }
+        return;
+    }
+
     if (!*varname) {
 	fprintf(ErrFp, ErrMsg[M_I_OPTION], ErrMsg[E_MISS_VAR]);
 	return;
@@ -953,3 +1014,191 @@ AddTrustedUser(char const *username)
     NumTrustedUsers++;
 }
 
+static pid_t LimiterPid = (pid_t) -1;
+
+void unlimit_execution_time(void)
+{
+    if (LimiterPid != (pid_t) -1) {
+        kill(LimiterPid, SIGTERM);
+        LimiterPid = (pid_t) -1;
+    }
+}
+
+static void limit_execution_time(int t)
+{
+    pid_t parent = getpid();
+
+    pid_t pid = fork();
+    if (pid < 0) {
+        perror("fork");
+        exit(1);
+    }
+
+    if (pid > 0) {
+        LimiterPid = pid;
+        /* In the parent */
+        return;
+    }
+
+    /* In the child */
+    time_t start = time(NULL);
+    while(1) {
+        sleep(1);
+        if (kill(parent, 0) < 0) {
+            /* Parent has probably exited */
+            exit(0);
+        }
+        if (time(NULL) - start > t) {
+            kill(parent, SIGXCPU);
+            exit(0);
+        }
+    }
+}
+
+static void
+ProcessLongOption(char const *arg)
+{
+    int t;
+    if (!strcmp(arg, "version")) {
+        printf("%s\n", VERSION);
+        exit(EXIT_SUCCESS);
+    }
+    if (sscanf(arg, "max-execution-time=%d", &t) == 1) {
+        if (t < 0) {
+            fprintf(ErrFp, "%s: --max-execution-time must be non-negative\n", ArgV[0]);
+            return;
+        }
+        if (t > 0) {
+            limit_execution_time(t);
+        }
+        return;
+    }
+    fprintf(ErrFp, "%s: Unknown long option --%s\n", ArgV[0], arg);
+}
+
+static void
+guess_terminal_background(int *r, int *g, int *b)
+{
+    int ttyfd;
+    struct pollfd p;
+    unsigned int rr, gg, bb;
+    char buf[128];
+    int n;
+
+    *r = -1;
+    *g = -1;
+    *b = -1;
+
+    /* Don't guess if stdout not a terminal unless asked to by @,t */
+    if (should_guess_terminal_background != 2) {
+        if (!isatty(STDOUT_FILENO)) {
+            return;
+        }
+    }
+
+    ttyfd = open("/dev/tty", O_RDWR);
+    if (ttyfd < 0) {
+        return;
+    }
+
+    if (!isatty(ttyfd)) {
+        /* Not a TTY: Can't guess the color */
+        close(ttyfd);
+        return;
+    }
+
+    if (!tty_init(ttyfd)) {
+        return;
+    }
+    tty_raw(ttyfd);
+    n = write(ttyfd, "\033]11;?\033\\", 8);
+
+    if (n != 8) {
+        /* write failed... WTF?  Not much we can do */
+        return;
+    }
+
+    /* Wait up to 0.1s for terminal to respond */
+    p.fd = ttyfd;
+    p.events = POLLIN;
+    if (poll(&p, 1, 100) < 0) {
+        tty_reset(ttyfd);
+        close(ttyfd);
+        return;
+    }
+    if (!(p.revents & POLLIN)) {
+        tty_reset(ttyfd);
+        close(ttyfd);
+        return;
+    }
+    n = read(ttyfd, buf, 127);
+    if (n <= 0) {
+        tty_reset(ttyfd);
+        close(ttyfd);
+        return;
+    }
+    tty_reset(ttyfd);
+    buf[n+1] = 0;
+    if (n < 25) {
+        /* Too short */
+        return;
+    }
+    if (sscanf(buf+5, "rgb:%x/%x/%x", &rr, &gg, &bb) != 3) {
+        /* Couldn't scan color codes */
+        return;
+    }
+    *r = (int) ((rr >> 8) & 255);
+    *g = (int) ((gg >> 8) & 255);
+    *b = (int) ((bb >> 8) & 255);
+}
+
+static struct termios orig_termios;
+
+static int
+tty_init(int fd)
+{
+    if (tcgetattr(fd, &orig_termios) < 0) {
+        return 0;
+    }
+    return 1;
+}
+
+static void
+tty_raw(int fd)
+{
+    struct termios raw;
+
+    raw = orig_termios;
+
+    raw.c_iflag &= ~(BRKINT | ICRNL | INPCK | ISTRIP | IXON);
+    raw.c_oflag &= ~(OPOST);
+    raw.c_cflag |= (CS8);
+    raw.c_lflag &= ~(ECHO | ICANON | IEXTEN | ISIG);
+
+    /* put terminal in raw mode after flushing */
+    tcsetattr(fd,TCSAFLUSH,&raw);
+}
+
+static void
+tty_reset(int fd)
+{
+    tcsetattr(fd, TCSAFLUSH, &orig_termios);
+}
+
+int
+GetTerminalBackground(void)
+{
+    int r, g, b;
+    if (should_guess_terminal_background) {
+        guess_terminal_background(&r, &g, &b);
+        if (r >= 0 && g >= 0 && b >= 0) {
+            if (r+g+b <= 85*3 && r <= 128 && g <= 128 && b <= 128) {
+                TerminalBackground = TERMINAL_BACKGROUND_DARK;
+            } else {
+                TerminalBackground = TERMINAL_BACKGROUND_LIGHT;
+            }
+        }
+        should_guess_terminal_background = 0;
+    }
+    return TerminalBackground;
+}

src/lang.h

@@ -5,7 +5,7 @@
 /*  Header file for language support for various languages.    */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/

src/langs/danish.h

@@ -6,7 +6,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*                                                             */
-/*  REMIND is Copyright (C) 1992-2023 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2024 by Dianne Skoll          */
 /*  This file is Copyright (C) 1993 by Mogens Lynnerup.        */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */

src/langs/dutch.h

@@ -11,7 +11,7 @@
 /*  Further corrections by Erik-Jan Vens                       */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/

src/langs/english.h

@@ -5,7 +5,7 @@
 /*  Support for the English language.                          */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/

src/langs/finnish.h

@@ -11,7 +11,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*  This file is Copyright (C) 1993-1998 by Mikko Silvonen.    */
-/*  REMIND is Copyright (C) 1992-2023 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2024 by Dianne Skoll          */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -145,7 +145,7 @@ EXTERN char *ErrMsg[] =
     "Ok",
     "Puuttuva ']'",
     "Puuttuva lainausmerkki",
-    "Liian monimutkainen lauseke - liikaa operaattoreita",
+    "Liian monimutkainen lauseke",
     "Liian monimutkainen lauseke - liikaa operandeja",
     "Puuttuva ')'",
     "Määrittelemätön funktio",
@@ -245,7 +245,11 @@ EXTERN char *ErrMsg[] =
     "No files matching *.rem",
     "String too long",
     "Time specified twice",
-    "Cannot specify DURATION without specifying AT"
+    "Cannot specify DURATION without specifying AT",
+    "Odotettu viikonpäivän nimi",
+    "Päällekkäinen argumentin nimi",
+    "Lausekkeiden arviointi on poistettu käytöstä",
+
 };
 #endif /* MK_GLOBALS */
 
@@ -254,7 +258,7 @@ EXTERN char *ErrMsg[] =
 #define L_USAGE_OVERRIDE 1
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2023 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2024 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> BETAVERSIO <<<<\n");
 #endif
@@ -271,12 +275,10 @@ void Usage(void)
     fprintf(ErrFp, " -o     Älä noudata ONCE-lauseita\n");
     fprintf(ErrFp, " -t     Laukaise kaikki viestit deltan arvosta välittämättä\n");
     fprintf(ErrFp, " -h     Suppeat tulostukset\n");
-#ifdef HAVE_QUEUED
     fprintf(ErrFp, " -a     Älä laukaise viestejä heti - lisää ne jonoon\n");
     fprintf(ErrFp, " -q     Älä lisää viestejä jonoon\n");
     fprintf(ErrFp, " -f     Laukaise viestit, pysy etualalla\n");
     fprintf(ErrFp, " -z[n]  Käynnisty demonina, herätys n:n (5:n) minuutin välein\n");
-#endif
     fprintf(ErrFp, " -d...  Virheenetsintä: e=echo x=expr-eval t=trig v=dumpvars l=showline\n");
     fprintf(ErrFp, " -e     Ohjaa virhetulostus stdout-vuohon\n");
     fprintf(ErrFp, " -b[n]  Ajan ilmaisu: 0=ap/ip, 1=24 tuntia, 2=ei aikoja\n");

src/langs/french.h

@@ -8,7 +8,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*                                                             */
-/*  REMIND is Copyright (C) 1992-2023 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2024 by Dianne Skoll          */
 /*  This file is Copyright (C) 1993 by Laurent Duperval and    */
 /*  Dianne Skoll.                                              */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
@@ -119,7 +119,7 @@ EXTERN char *ErrMsg[] =
     "Ok",
     "']' manquant",
     "Apostrophe manquant",
-    "Expression trop complexe - trop d'opérateurs",
+    "Expression trop complexe",
     "Expression trop complexe - trop d'opérandes",
     "')' manquante",
     "Fonction non-définie",
@@ -219,7 +219,11 @@ EXTERN char *ErrMsg[] =
     "No files matching *.rem",
     "String too long",
     "Time specified twice",
-    "Cannot specify DURATION without specifying AT"
+    "Cannot specify DURATION without specifying AT",
+    "Nom du jour de la semaine attendu",
+    "Nom de l'argument en double",
+    "L'évaluation de l'expression est désactivée",
+
 };
 #endif /* MK_GLOBALS */
 
@@ -228,7 +232,7 @@ EXTERN char *ErrMsg[] =
 #define L_USAGE_OVERRIDE 1
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2023 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2024 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> BETA VERSION <<<<\n");
 #endif
@@ -245,12 +249,10 @@ void Usage(void)
     fprintf(ErrFp, " -o     Ignorer instructions ONCE\n");
     fprintf(ErrFp, " -t     Déclencher tous les rappels peu importe le delta\n");
     fprintf(ErrFp, " -h     Mode silencieux\n");
-#ifdef HAVE_QUEUED
     fprintf(ErrFp, " -a     Ne pas déclencher les rappels minutés immédiatement - les mettre en file\n");
     fprintf(ErrFp, " -q     Ne pas mettre les rappels minutés en file\n");
     fprintf(ErrFp, " -f     Déclencher les rappels minutés immédiatement en restant en avant-plan\n");
     fprintf(ErrFp, " -z[n]  Entrer en mode 'daemon', réveil chaque n (5) minutes\n");
-#endif
     fprintf(ErrFp, " -d...  Debug: e=echo x=expr-eval t=trig v=dumpvars l=showline\n");
     fprintf(ErrFp, " -e     Envoyer les messages de stderr à stdout\n");
     fprintf(ErrFp, " -b[n]  Formats de l'heure pour le calendrier: 0=am/pm, 1=24hr, 2=aucun\n");

src/langs/german.h

@@ -9,7 +9,7 @@
 /*  I don't speak German.                                      */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/

src/langs/icelandic.h

@@ -5,7 +5,7 @@
 /*  Support for the Icelandic language.                        */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  Translated by Björn Davíðsson (bjossi@snerpa.is)           */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */

src/langs/italian.h

@@ -7,7 +7,7 @@
 /*  This file is part of REMIND.                               */
 /*  It is Copyright (C) 1996 by Valerio Aimale                 */
 /*                                                             */
-/*  Remind is copyright (C) 1992-2023 by Dianne Skoll          */
+/*  Remind is copyright (C) 1992-2024 by Dianne Skoll          */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -17,11 +17,11 @@
 
 /* Day names */
 #define L_SUNDAY "Domenica"
-#define L_MONDAY "Lunedí"
-#define L_TUESDAY "Martedí"
-#define L_WEDNESDAY "Mercoledí"
-#define L_THURSDAY "Giovedí"
-#define L_FRIDAY "Venerdí"
+#define L_MONDAY "Lunedì"
+#define L_TUESDAY "Martedì"
+#define L_WEDNESDAY "Mercoledì"
+#define L_THURSDAY "Giovedì"
+#define L_FRIDAY "Venerdì"
 #define L_SATURDAY "Sabato"
 
 /* Month names */
@@ -68,7 +68,7 @@
 #define L_AT "alle"
 #define L_MINUTE "minut"
 #define L_HOUR "or"
-#define L_IS "é"
+#define L_IS "è"
 #define L_WAS "era"
 #define L_AND "e"
 /* What to add to make "hour" plural */

src/langs/norwgian.h

@@ -6,7 +6,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*  This file is Copyright (C) 1993 by Trygve Randen.          */
-/*  Remind is Copyright (C) 1992-2023 by Dianne Skoll          */
+/*  Remind is Copyright (C) 1992-2024 by Dianne Skoll          */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/

src/langs/polish.h

@@ -9,7 +9,7 @@
 /*  Polish.                                                    */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -135,7 +135,7 @@ EXTERN char *ErrMsg[] =
     "OK",
     "Brakujący ']'",
     "Brakujący nawias",
-    "Zbyt skomplikowane wyrażenie - za dużo operatorów",
+    "Zbyt skomplikowane wyrażenie",
     "Zbyt skomplikowane wyrażenie - za dużo argumentów",
     "Brakujący ')'",
     "Nie zdefiniowana funkcja",
@@ -235,7 +235,10 @@ EXTERN char *ErrMsg[] =
     "No files matching *.rem",
     "String too long",
     "Time specified twice",
-    "Cannot specify DURATION without specifying AT"
+    "Cannot specify DURATION without specifying AT",
+    "Oczekiwana nazwa dnia tygodnia",
+    "Zduplikowana nazwa argumentu",
+    "Ocena wyrażeń jest wyłączona",
 };
 #endif /* MK_GLOBALS */
 
@@ -244,7 +247,7 @@ EXTERN char *ErrMsg[] =
 #define L_USAGE_OVERRIDE 1
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2023 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2024 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> BETA VERSION <<<<\n");
 #endif
@@ -261,12 +264,10 @@ void Usage(void)
     fprintf(ErrFp, " -o     Ignoruj instrukcje ONCE\n");
     fprintf(ErrFp, " -t     Odpal wszystkie przyszłe przypomnienia niezależnie od delty\n");
     fprintf(ErrFp, " -h     Praca bezszmerowa\n");
-#ifdef HAVE_QUEUED
     fprintf(ErrFp, " -a     Nie odpalaj przyponień czasowych - kolejkuj je\n");
     fprintf(ErrFp, " -q     Nie kolejkuj przyponień czasowych\n");
     fprintf(ErrFp, " -f     Nie przechodź do pracy w tle\n");
     fprintf(ErrFp, " -z[n]  Pracuj jako demon, budząc się co n (5) minut\n");
-#endif
     fprintf(ErrFp, " -d...  Odpluskwianie: e=echo x=expr-eval t=trig v=dumpvars l=showline\n");
     fprintf(ErrFp, " -e     Komunikaty o błędach skieruj na stdout\n");
     fprintf(ErrFp, " -b[n]  Format czasu: 0=am/pm, 1=24godz., 2=żaden\n");

src/langs/portbr.h

@@ -8,7 +8,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*                                                             */
-/*  REMIND is Copyright (C) 1992-2023 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2024 by Dianne Skoll          */
 /*  This file is Copyright (C) 1996 by Marco Paganini and      */
 /*  Dianne Skoll.                                              */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
@@ -144,7 +144,7 @@ EXTERN char *ErrMsg[] =
     "Ok",
     "Falta um ']'",
     "Falta uma aspa",
-    "Expressao muito complexa - muitos operadores",
+    "Expressao muito complexa",
     "Expressao muito complexa - muitos operandos",
     "Falta um ')'",
     "Funcao nao definida",
@@ -244,7 +244,10 @@ EXTERN char *ErrMsg[] =
     "No files matching *.rem",
     "String too long",
     "Time specified twice",
-    "Cannot specify DURATION without specifying AT"
+    "Cannot specify DURATION without specifying AT",
+    "Esperando nome do dia da semana",
+    "Nome de argumento duplicado",
+    "A avaliação da expressão está desabilitada",
 };
 #endif /* MK_GLOBALS */
 
@@ -253,7 +256,7 @@ EXTERN char *ErrMsg[] =
 #define L_USAGE_OVERRIDE 1
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (versao %s) (C) 1992-2023 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (versao %s) (C) 1992-2024 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> VERSAO BETA <<<<\n");
 #endif
@@ -270,12 +273,10 @@ void Usage(void)
     fprintf(ErrFp, " -o     Ignora diretivas ONCE\n");
     fprintf(ErrFp, " -t     Aciona todos os compromissos futuros, sem considerar o delta\n");
     fprintf(ErrFp, " -h     Modo `Hush' - quieto\n");
-#ifdef HAVE_QUEUED
     fprintf(ErrFp, " -a     Nao aciona compromissos com hora imediatamente - apenas coloca na fila\n");
     fprintf(ErrFp, " -q     Nao coloca compromissos com hora na fila\n");
     fprintf(ErrFp, " -f     Aciona compromissos com hora em modo foreground\n");
     fprintf(ErrFp, " -z[n]  Modo `daemon', acordando a cada n (5) minutos.\n");
-#endif
     fprintf(ErrFp, " -d...  Debug: e=echo x=expr-eval t=trigger v=dumpvars l=showline\n");
     fprintf(ErrFp, " -e     Desvia mensagens normalmente enviadas a stderr para stdout\n");
     fprintf(ErrFp, " -b[n]  Formato da hora para o cal: 0=am/pm, 1=24hr, 2=nenhum\n");

src/langs/romanian.h

@@ -8,7 +8,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*                                                             */
-/*  REMIND is Copyright (C) 1992-2023 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2024 by Dianne Skoll          */
 /*  This file is Copyright (C) 1996-1998 by Liviu Daia         */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */

src/langs/spanish.h

@@ -7,7 +7,7 @@
 /*  Author: Rafa Couto <rafacouto@biogate.com>                 */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/

src/main.c

@@ -6,7 +6,7 @@
 /*  routines, etc.                                             */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -14,28 +14,29 @@
 #define _XOPEN_SOURCE 600
 #include "config.h"
 
+#include <fcntl.h>
+#include <sys/wait.h>
 #include <errno.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <stdio.h>
 #include <signal.h>
 #include <string.h>
+
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+
 #include <stdarg.h>
 #ifdef HAVE_LOCALE_H
 #include <locale.h>
 #endif
 
 #include <ctype.h>
-#ifdef TIME_WITH_SYS_TIME
-#include <time.h>
+#if defined(HAVE_SYS_TIME_H)
 #include <sys/time.h>
-#else
-#if defined(HAVE_SYS_TIME_H) || defined (TIME_WITH_SYS_TIME)
-#include <sys/time.h>
-#else
+#endif
 #include <time.h>
-#endif
-#endif
 
 #include <sys/types.h>
 #ifdef REM_USE_WCHAR
@@ -45,12 +46,41 @@
 
 #include "types.h"
 #include "protos.h"
-#include "expr.h"
 #include "globals.h"
 #include "err.h"
 
 static void DoReminders(void);
 
+/* Macro for simplifying common block so as not to litter code */
+#define OUTPUT(c) do { if (output) { DBufPutc(output, c); } else { putchar(c); } } while(0)
+
+void
+exitfunc(void)
+{
+    /* Kill any execution-time-limiter process */
+    unlimit_execution_time();
+
+    if (DebugFlag & DB_PARSE_EXPR) {
+        fflush(stdout);
+        fflush(stderr);
+        UnsetAllUserFuncs();
+        print_expr_nodes_stats();
+    }
+}
+
+static void sigalrm(int)
+{
+    if (ExpressionEvaluationTimeLimit) {
+        ExpressionTimeLimitExceeded = 1;
+    }
+}
+
+static void sigxcpu(int)
+{
+    write(STDERR_FILENO, "\n\nmax-execution-time exceeded.\n\n", 32);
+    _exit(1);
+}
+
 /***************************************************************/
 /***************************************************************/
 /**                                                           **/
@@ -62,6 +92,8 @@ int main(int argc, char *argv[])
 {
     int pid;
 
+    struct sigaction act;
+
 #ifdef HAVE_SETLOCALE
     setlocale(LC_ALL, "");
 #endif
@@ -74,9 +106,28 @@ int main(int argc, char *argv[])
     ArgV = (char const **) argv;
 
     InitRemind(argc, (char const **) argv);
+
+    act.sa_handler = sigalrm;
+    sigemptyset(&act.sa_mask);
+    if (sigaction(SIGALRM, &act, NULL) < 0) {
+        fprintf(stderr, "%s: sigaction() failed: %s\n",
+                argv[0], strerror(errno));
+        exit(1);
+    }
+
+    act.sa_handler = sigxcpu;
+    sigemptyset(&act.sa_mask);
+    if (sigaction(SIGXCPU, &act, NULL) < 0) {
+        fprintf(stderr, "%s: sigaction() failed: %s\n",
+                argv[0], strerror(errno));
+        exit(1);
+    }
+
     DBufInit(&(LastTrigger.tags));
     ClearLastTriggers();
 
+    atexit(exitfunc);
+
     if (DoCalendar || (DoSimpleCalendar && (!NextMode || PsCal))) {
 	ProduceCalendar();
 	return 0;
@@ -187,14 +238,14 @@ static void DoReminders(void)
 
     if (FileAccessDate < 0) {
 	fprintf(ErrFp, "%s: `%s': %s.\n", ErrMsg[E_CANTACCESS], InitialFile, strerror(errno));
-	exit(1);
+	exit(EXIT_FAILURE);
     }
 
     r=IncludeFile(InitialFile);
     if (r) {
 	fprintf(ErrFp, "%s %s: %s\n", ErrMsg[E_ERR_READING],
 		InitialFile, ErrMsg[r]);
-	exit(1);
+	exit(EXIT_FAILURE);
     }
 
     while(1) {
@@ -202,7 +253,7 @@ static void DoReminders(void)
 	if (r == E_EOF) return;
 	if (r) {
 	    Eprint("%s: %s", ErrMsg[E_ERR_READING], ErrMsg[r]);
-	    exit(1);
+	    exit(EXIT_FAILURE);
 	}
 	s = FindInitialToken(&tok, CurLine);
 
@@ -280,9 +331,11 @@ static void DoReminders(void)
 	    case T_Pop:     r=PopOmitContext(&p);     break;
 	    case T_Preserve: r=DoPreserve(&p);  break;
 	    case T_Push:    r=PushOmitContext(&p);    break;
+            case T_Expr: r = DoExpr(&p); break;
 	    case T_RemType: if (tok.val == RUN_TYPE) {
 		    r=DoRun(&p);
 		} else {
+		    DestroyParser(&p);
 		    CreateParser(CurLine, &p);
 		    r=DoRem(&p);
 		    purge_handled = 1;
@@ -291,10 +344,8 @@ static void DoReminders(void)
 
 
 	    /* If we don't recognize the command, do a REM by default */
-	    /* Note:  Since the parser hasn't been used yet, we don't */
-	    /* need to destroy it here. */
 
-	    default: CreateParser(CurLine, &p); purge_handled = 1; r=DoRem(&p); break;
+	    default: DestroyParser(&p); CreateParser(CurLine, &p); purge_handled = 1; r=DoRem(&p); break;
 
 	    }
 	    if (r && (!Hush || r != E_RUN_DISABLED)) {
@@ -452,6 +503,16 @@ int ParseChar(ParsePtr p, int *err, int peek)
 		return *(p->pos++);
 	    }
 	}
+
+        /* Convert [[ to just a literal [ */
+        if (*p->pos == BEG_OF_EXPR && *(p->pos+1) == BEG_OF_EXPR) {
+	    if (peek) {
+		return *(p->pos+1);
+	    } else {
+                p->pos++;
+		return *(p->pos++);
+	    }
+        }
 	p->expr_happened = 1;
 	p->pos++;
 	r = EvalExpr(&(p->pos), &val, p);
@@ -460,8 +521,15 @@ int ParseChar(ParsePtr p, int *err, int peek)
 	    DestroyParser(p);
 	    return 0;
 	}
+        while(*p->pos && (isempty(*p->pos))) {
+            p->pos++;
+        }
 	if (*p->pos != END_OF_EXPR) {
-	    *err = E_MISS_END;
+            if (*p->pos) {
+                *err = E_PARSE_ERR;
+            } else {
+                *err = E_MISS_END;
+            }
 	    DestroyParser(p);
 	    DestroyValue(val);
 	    return 0;
@@ -576,6 +644,57 @@ int ParseIdentifier(ParsePtr p, DynamicBuffer *dbuf)
     }
 }
 
+/***************************************************************/
+/*                                                             */
+/* ParseExpr                                                   */
+/*                                                             */
+/* We are expecting an expression here.  Parse it and return   */
+/* the value node tree.                                        */
+/*                                                             */
+/***************************************************************/
+expr_node * ParseExpr(ParsePtr p, int *r)
+{
+
+    int bracketed = 0;
+    expr_node *node;
+
+    if (p->isnested) {
+        *r = E_PARSE_ERR;  /* Can't nest expressions */
+        return NULL;
+    }
+    if (!p->pos) {
+        *r = E_PARSE_ERR;      /* Missing expression */
+        return NULL;
+    }
+
+    while (isempty(*p->pos)) (p->pos)++;
+    if (!*(p->pos)) {
+        *r = E_EOLN;
+        return NULL;
+    }
+    if (*p->pos == BEG_OF_EXPR) {
+	(p->pos)++;
+	bracketed = 1;
+    }
+    node = parse_expression(&(p->pos), r, NULL);
+    if (*r) {
+        return free_expr_tree(node);
+    }
+
+    if (bracketed) {
+	if (*p->pos != END_OF_EXPR) {
+            if (*p->pos) {
+                *r = E_PARSE_ERR;
+            } else {
+                *r = E_MISS_END;
+            }
+            return free_expr_tree(node);
+        }
+	(p->pos)++;
+    }
+    return node;
+}
+
 /***************************************************************/
 /*                                                             */
 /* EvaluateExpr                                                */
@@ -587,21 +706,22 @@ int ParseIdentifier(ParsePtr p, DynamicBuffer *dbuf)
 int EvaluateExpr(ParsePtr p, Value *v)
 {
 
-    int bracketed = 0;
     int r;
+    int nonconst = 0;
+    expr_node *node = ParseExpr(p, &r);
 
-    if (p->isnested) return E_PARSE_ERR;  /* Can't nest expressions */
-    while (isempty(*p->pos)) (p->pos)++;
-    if (!p->pos) return E_PARSE_ERR;      /* Missing expression */
-    if (*p->pos == BEG_OF_EXPR) {
-	(p->pos)++;
-	bracketed = 1;
+    if (r != OK) {
+        return r;
     }
-    r = EvalExpr(&(p->pos), v, p);
+    if (!node) {
+        return E_SWERR;
+    }
+
+    r = evaluate_expression(node, NULL, v, &nonconst);
+    free_expr_tree(node);
     if (r) return r;
-    if (bracketed) {
-	if (*p->pos != END_OF_EXPR) return E_MISS_END;
-	(p->pos)++;
+    if (nonconst) {
+        p->nonconst_expr = 1;
     }
     return OK;
 }
@@ -645,27 +765,34 @@ void Eprint(char const *fmt, ...)
 	FreshLine = 0;
 	if (strcmp(FileName, "-")) {
 	    (void) fprintf(ErrFp, "%s(%d): ", FileName, LineNo);
+            va_start(argptr, fmt);
+            (void) vfprintf(ErrFp, fmt, argptr);
+            (void) fputc('\n', ErrFp);
+            va_end(argptr);
             if (print_callstack(ErrFp)) {
-                (void) fprintf(ErrFp, ": ");
+                (void) fprintf(ErrFp, "\n");
             }
         } else {
 	    (void) fprintf(ErrFp, "-stdin-(%d): ", LineNo);
+            va_start(argptr, fmt);
+            (void) vfprintf(ErrFp, fmt, argptr);
+            (void) fputc('\n', ErrFp);
+            va_end(argptr);
             if (print_callstack(ErrFp)) {
-                (void) fprintf(ErrFp, ": ");
+                (void) fprintf(ErrFp, "\n");
             }
         }
 	if (DebugFlag & DB_PRTLINE) OutputLine(ErrFp);
     } else if (FileName) {
 	fprintf(ErrFp, "       ");
+        va_start(argptr, fmt);
+        (void) vfprintf(ErrFp, fmt, argptr);
+        (void) fputc('\n', ErrFp);
+        va_end(argptr);
         if (print_callstack(ErrFp)) {
-            (void) fprintf(ErrFp, ": ");
+            (void) fprintf(ErrFp, "\n");
         }
     }
-
-    va_start(argptr, fmt);
-    (void) vfprintf(ErrFp, fmt, argptr);
-    (void) fputc('\n', ErrFp);
-    va_end(argptr);
     return;
 }
 
@@ -753,19 +880,32 @@ int PushToken(char const *tok, ParsePtr p)
 /*  Return the system time in seconds past midnight            */
 /*                                                             */
 /***************************************************************/
-long SystemTime(int realtime)
+int SystemTime(int realtime)
 {
-    time_t tloc;
+    time_t now;
     struct tm *t;
 
-    if (!realtime && (SysTime != -1L)) return SysTime;
+    if (!realtime && (SysTime != -1)) return SysTime;
 
-    (void) time(&tloc);
-    t = localtime(&tloc);
-    return (long) t->tm_hour * 3600L + (long) t->tm_min * 60L +
-	(long) t->tm_sec;
+    now = time(NULL);
+    t = localtime(&now);
+    return t->tm_hour * 3600L + t->tm_min * 60L +
+	t->tm_sec;
 }
 
+/***************************************************************/
+/*                                                             */
+/*  MinutesPastMidnight                                        */
+/*                                                             */
+/*  Return the system time in minutes past midnight            */
+/*                                                             */
+/***************************************************************/
+int MinutesPastMidnight(int realtime)
+{
+    return (SystemTime(realtime) / 60);
+}
+
+
 /***************************************************************/
 /*                                                             */
 /*  SystemDate                                                 */
@@ -777,11 +917,11 @@ long SystemTime(int realtime)
 /***************************************************************/
 int SystemDate(int *y, int *m, int *d)
 {
-    time_t tloc;
+    time_t now;
     struct tm *t;
 
-    (void) time(&tloc);
-    t = localtime(&tloc);
+    now = time(NULL);
+    t = localtime(&now);
 
     *d = t->tm_mday;
     *m = t->tm_mon;
@@ -886,7 +1026,7 @@ int DoIfTrig(ParsePtr p)
     if ((size_t) NumIfs >= IF_NEST) return E_NESTED_IF;
     if (ShouldIgnoreLine()) syndrome = IF_TRUE | BEFORE_ELSE;
     else {
-	if ( (r=ParseRem(p, &trig, &tim, 1)) ) return r;
+	if ( (r=ParseRem(p, &trig, &tim)) ) return r;
 	if (trig.typ != NO_TYPE) return E_PARSE_ERR;
 	dse = ComputeTrigger(trig.scanfrom, &trig, &tim, &r, 1);
 	if (r) {
@@ -1004,6 +1144,12 @@ int DoDebug(ParsePtr p)
 	    else     DebugFlag &= ~DB_ECHO_LINE;
 	    break;
 
+        case 's':
+        case 'S':
+	    if (val) DebugFlag |=  DB_PARSE_EXPR;
+	    else     DebugFlag &= ~DB_PARSE_EXPR;
+	    break;
+
 	case 'x':
 	case 'X':
 	    if (val) DebugFlag |=  DB_PRTEXPR;
@@ -1081,7 +1227,6 @@ int DoBanner(ParsePtr p)
 /*                                                             */
 /*  Enable or disable the RUN command under program control    */
 /*                                                             */
-/*                                                             */
 /***************************************************************/
 int DoRun(ParsePtr p)
 {
@@ -1108,6 +1253,38 @@ int DoRun(ParsePtr p)
     return VerifyEoln(p);
 }
 
+/***************************************************************/
+/*                                                             */
+/*  DoExpr                                                     */
+/*                                                             */
+/*  Enable or disable expression evaluation                    */
+/*                                                             */
+/***************************************************************/
+int DoExpr(ParsePtr p)
+{
+    int r;
+
+    DynamicBuffer buf;
+    DBufInit(&buf);
+
+    if ( (r=ParseToken(p, &buf)) ) return r;
+
+/* Only allow EXPR ON in top-level script */
+    if (! StrCmpi(DBufValue(&buf), "ON")) {
+	if (TopLevel()) ExpressionEvaluationDisabled = 0;
+    }
+/* But allow EXPR OFF anywhere */
+    else if (! StrCmpi(DBufValue(&buf), "OFF"))
+        ExpressionEvaluationDisabled = 1;
+    else {
+	DBufFree(&buf);
+	return E_PARSE_ERR;
+    }
+    DBufFree(&buf);
+
+    return VerifyEoln(p);
+}
+
 /***************************************************************/
 /*                                                             */
 /*  DoFlush                                                    */
@@ -1244,19 +1421,19 @@ int CalcMinsFromUTC(int dse, int tim, int *mins, int *isdst)
     return 0;
 }
 
-static char const *OutputEscapeSequences(char const *s, int print)
+static char const *OutputEscapeSequences(char const *s, int print, DynamicBuffer *output)
 {
     while (*s == 0x1B && *(s+1) == '[') {
-        if (print) putchar(*s);
+        if (print) OUTPUT(*s);
         s++;
-        if (print) putchar(*s);
+        if (print) OUTPUT(*s);
         s++;
         while (*s && (*s < 0x40 || *s > 0x7E)) {
-            if (print) putchar(*s);
+            if (print) OUTPUT(*s);
             s++;
         }
         if (*s) {
-            if (print) putchar(*s);
+            if (print) OUTPUT(*s);
             s++;
         }
     }
@@ -1265,19 +1442,19 @@ static char const *OutputEscapeSequences(char const *s, int print)
 
 #ifdef REM_USE_WCHAR
 #define ISWBLANK(c) (iswspace(c) && (c) != '\n')
-static wchar_t const *OutputEscapeSequencesWS(wchar_t const *s, int print)
+static wchar_t const *OutputEscapeSequencesWS(wchar_t const *s, int print, DynamicBuffer *output)
 {
     while (*s == 0x1B && *(s+1) == '[') {
-        if (print) PutWideChar(*s);
+        if (print) PutWideChar(*s, output);
         s++;
-        if (print) PutWideChar(*s);
+        if (print) PutWideChar(*s, output);
         s++;
         while (*s && (*s < 0x40 || *s > 0x7E)) {
-            if (print) PutWideChar(*s);
+            if (print) PutWideChar(*s, output);
             s++;
         }
         if (*s) {
-            if (print) PutWideChar(*s);
+            if (print) PutWideChar(*s, output);
             s++;
         }
     }
@@ -1286,7 +1463,7 @@ static wchar_t const *OutputEscapeSequencesWS(wchar_t const *s, int print)
 
 
 static void
-FillParagraphWCAux(wchar_t const *s)
+FillParagraphWCAux(wchar_t const *s, DynamicBuffer *output)
 {
     int line = 0;
     int i, j;
@@ -1301,7 +1478,7 @@ FillParagraphWCAux(wchar_t const *s)
 
 	/* If it's a carriage return, output it and start new paragraph */
 	if (*s == '\n') {
-	    putchar('\n');
+	    OUTPUT('\n');
 	    s++;
 	    line = 0;
 	    while(ISWBLANK(*s)) s++;
@@ -1314,7 +1491,7 @@ FillParagraphWCAux(wchar_t const *s)
 	   number of spaces */
 	j = line ? SubsIndent : FirstIndent;
 	for (i=0; i<j; i++) {
-	    putchar(' ');
+	    OUTPUT(' ');
 	}
 
 	/* Calculate the amount of room left on this line */
@@ -1327,7 +1504,7 @@ FillParagraphWCAux(wchar_t const *s)
 	    if (*s == '\n') break;
             while(1) {
                 t = s;
-                s = OutputEscapeSequencesWS(s, 1);
+                s = OutputEscapeSequencesWS(s, 1, output);
                 if (s == t) break;
                 while(ISWBLANK(*s)) s++;
             }
@@ -1335,7 +1512,7 @@ FillParagraphWCAux(wchar_t const *s)
             len = 0;
 	    while(*s && !iswspace(*s)) {
                 if (*s == 0x1B && *(s+1) == '[') {
-                    s = OutputEscapeSequencesWS(s, 0);
+                    s = OutputEscapeSequencesWS(s, 0, output);
                     continue;
                 }
                 len += wcwidth(*s);
@@ -1346,17 +1523,17 @@ FillParagraphWCAux(wchar_t const *s)
 	    }
 	    if (!pendspace || len+pendspace <= roomleft) {
 		for (i=0; i<pendspace; i++) {
-		    putchar(' ');
+		    OUTPUT(' ');
 		}
 		while(t < s) {
-                    PutWideChar(*t);
+                    PutWideChar(*t, output);
 		    if (strchr(EndSent, *t)) doublespace = 2;
 		    else if (!strchr(EndSentIg, *t)) doublespace = 1;
 		    t++;
 		}
 	    } else {
 		s = t;
-		putchar('\n');
+		OUTPUT('\n');
 		line++;
 		break;
 	    }
@@ -1367,7 +1544,7 @@ FillParagraphWCAux(wchar_t const *s)
 }
 
 static int
-FillParagraphWC(char const *s)
+FillParagraphWC(char const *s, DynamicBuffer *output)
 {
     size_t len;
     wchar_t *buf;
@@ -1377,7 +1554,7 @@ FillParagraphWC(char const *s)
     buf = calloc(len+1, sizeof(wchar_t));
     if (!buf) return E_NO_MEM;
     (void) mbstowcs(buf, s, len+1);
-    FillParagraphWCAux(buf);
+    FillParagraphWCAux(buf, output);
     free(buf);
     return OK;
 }
@@ -1397,7 +1574,7 @@ FillParagraphWC(char const *s)
 /* A macro safe ONLY if used with arg with no side effects! */
 #define ISBLANK(c) (isspace(c) && (c) != '\n')
 
-void FillParagraph(char const *s)
+void FillParagraph(char const *s, DynamicBuffer *output)
 {
 
     int line = 0;
@@ -1415,7 +1592,7 @@ void FillParagraph(char const *s)
     if (!*s) return;
 
 #ifdef REM_USE_WCHAR
-    if (FillParagraphWC(s) == OK) {
+    if (FillParagraphWC(s, output) == OK) {
         return;
     }
 #endif
@@ -1425,7 +1602,7 @@ void FillParagraph(char const *s)
 
 	/* If it's a carriage return, output it and start new paragraph */
 	if (*s == '\n') {
-	    putchar('\n');
+            OUTPUT('\n');
 	    s++;
 	    line = 0;
 	    while(ISBLANK(*s)) s++;
@@ -1438,7 +1615,7 @@ void FillParagraph(char const *s)
 	   number of spaces */
 	j = line ? SubsIndent : FirstIndent;
 	for (i=0; i<j; i++) {
-	    putchar(' ');
+            OUTPUT(' ');
 	}
 
 	/* Calculate the amount of room left on this line */
@@ -1451,7 +1628,7 @@ void FillParagraph(char const *s)
 	    if (*s == '\n') break;
             while(1) {
                 t = s;
-                s = OutputEscapeSequences(s, 1);
+                s = OutputEscapeSequences(s, 1, output);
                 if (s == t) break;
                 while(ISBLANK(*s)) s++;
             }
@@ -1459,7 +1636,7 @@ void FillParagraph(char const *s)
             len = 0;
 	    while(*s && !isspace(*s)) {
                 if (*s == 0x1B && *(s+1) == '[') {
-                    s = OutputEscapeSequences(s, 0);
+                    s = OutputEscapeSequences(s, 0, output);
                     continue;
                 }
                 s++;
@@ -1470,17 +1647,17 @@ void FillParagraph(char const *s)
 	    }
 	    if (!pendspace || len+pendspace <= roomleft) {
 		for (i=0; i<pendspace; i++) {
-		    putchar(' ');
+                    OUTPUT(' ');
 		}
 		while(t < s) {
-		    putchar(*t);
+                    OUTPUT(*t);
 		    if (strchr(EndSent, *t)) doublespace = 2;
 		    else if (!strchr(EndSentIg, *t)) doublespace = 1;
 		    t++;
 		}
 	    } else {
 		s = t;
-		putchar('\n');
+                OUTPUT('\n');
 		line++;
 		break;
 	    }
@@ -1644,12 +1821,51 @@ SaveLastTimeTrig(TimeTrig const *t)
     memcpy(&LastTimeTrig, t, sizeof(LastTimeTrig));
 }
 
-/* Wrapper to ignore warnings about ignoring return value of system() */
+/* Wrapper to ignore warnings about ignoring return value of system()
+   Also redirects stdin and stdout to /dev/null for queued reminders */
+
 void
-System(char const *cmd)
+System(char const *cmd, int is_queued)
 {
     int r;
+    pid_t kid;
+    int fd;
+    int status;
+    int do_exit = 0;
+    if (is_queued && IsServerMode()) {
+        do_exit = 1;
+        /* Server mode... redirect stdin and stdout to /dev/null */
+        kid = fork();
+        if (kid == (pid_t) -1) {
+            /* Fork failed... nothing we can do */
+            return;
+        } else if (kid == 0) {
+            /* In the child */
+            (void) close(STDIN_FILENO);
+            (void) close(STDOUT_FILENO);
+            fd = open("/dev/null", O_RDONLY);
+            if (fd >= 0 && fd != STDIN_FILENO) {
+                dup2(fd, STDIN_FILENO);
+                close(STDIN_FILENO);
+            }
+            fd = open("/dev/null", O_WRONLY);
+            if (fd >= 0 && fd != STDOUT_FILENO) {
+                dup2(fd, STDOUT_FILENO);
+                close(STDOUT_FILENO);
+            }
+        } else {
+            /* In the parent */
+            while (waitpid(kid, &status, 0) != kid) /* continue */ ;
+            return;
+        }
+    }
+    /* This is the child process or original if we never forked */
     r = system(cmd);
+    if (do_exit) {
+        /* In the child process, so exit! */
+        exit(0);
+    }
+
     if (r == 0) {
         return;
     }

src/md5.h

@@ -6,6 +6,10 @@
 
 #include "config.h"
 
+#ifdef HAVE_STDINT_H
+#include <stdint.h>
+typedef uint32_t uint32;
+#else
 #if SIZEOF_UNSIGNED_INT == 4
 typedef unsigned int uint32;
 #elif SIZEOF_UNSIGNED_LONG == 4
@@ -13,6 +17,7 @@ typedef unsigned long uint32;
 #else
 # error Could not find a 32-bit integer type
 #endif
+#endif
 
 struct MD5Context {
 	uint32 buf[4];
@@ -26,9 +31,4 @@ void MD5Update(struct MD5Context *context, unsigned char const *buf,
 void MD5Final(unsigned char digest[16], struct MD5Context *context);
 void MD5Transform(uint32 buf[4], uint32 const in[16]);
 
-/*
- * This is needed to make RSAREF happy on some MS-DOS compilers.
- */
-typedef struct MD5Context MD5_CTX;
-
 #endif /* !MD5_H */

src/moon.c

@@ -5,7 +5,7 @@
 /*  Calculations for figuring out moon phases.                 */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -66,7 +66,6 @@
 #include <time.h>
 #include "types.h"
 #include "protos.h"
-#include "expr.h"
 #include "globals.h"
 #include "err.h"
 
@@ -412,7 +411,7 @@ static double phase(double pdate,
     Day = pdate - epoch;	    /* Date within epoch */
     N = fixangle((360 / 365.2422) * Day); /* Mean anomaly of the Sun */
     M = fixangle(N + elonge - elongp);    /* Convert from perigee
-					     co-ordinates to epoch 1980.0 */
+					     coordinates to epoch 1980.0 */
     Ec = kepler(M, eccent);     /* Solve equation of Kepler */
     Ec = sqrt((1 + eccent) / (1 - eccent)) * tan(Ec / 2);
     Ec = 2 * todeg(atan(Ec));   /* 1 anomaly */

src/omit.c

@@ -6,7 +6,7 @@
 /*  the data structures for OMITted dates.                     */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -20,9 +20,8 @@
 #include "protos.h"
 #include "globals.h"
 #include "err.h"
-#include "expr.h"
 
-static int BexistsIntArray (int array[], int num, int key);
+static int BexistsIntArray (int const array[], int num, int key);
 static void InsertIntoSortedArray (int *array, int num, int key);
 
 /* Arrays for the global omits */
@@ -32,7 +31,7 @@ static int PartialOmitArray[MAX_PARTIAL_OMITS];
 /* WeekdayOmits is declared in global.h */
 
 /* How many of each omit types do we have? */
-static int NumFullOmits, NumPartialOmits;
+int NumFullOmits, NumPartialOmits;
 
 /* The structure for saving and restoring OMIT contexts */
 typedef struct omitcontext {
@@ -251,7 +250,7 @@ int IsOmitted(int dse, int localomit, char const *omitfunc, int *omit)
 /*  element is found, 0 otherwise.                             */
 /*                                                             */
 /***************************************************************/
-static int BexistsIntArray(int array[], int num, int key)
+static int BexistsIntArray(int const array[], int num, int key)
 {
     int top=num-1, bot=0, mid;
 
@@ -377,8 +376,12 @@ int DoOmit(ParsePtr p)
 	    break;
 
 	default:
-	    Eprint("%s: `%s' (OMIT)", ErrMsg[E_UNKNOWN_TOKEN],
-		   DBufValue(&buf));
+            if (tok.type == T_Until) {
+                Eprint("OMIT: UNTIL not allowed; did you mean THROUGH?");
+            } else {
+                Eprint("%s: `%s' (OMIT)", ErrMsg[E_UNKNOWN_TOKEN],
+                       DBufValue(&buf));
+            }
 	    DBufFree(&buf);
 	    return E_UNKNOWN_TOKEN;
 	}
@@ -441,6 +444,9 @@ int DoOmit(ParsePtr p)
             if (!BexistsIntArray(PartialOmitArray, NumPartialOmits, syndrome)) {
                 InsertIntoSortedArray(PartialOmitArray, NumPartialOmits, syndrome);
                 NumPartialOmits++;
+                if (NumPartialOmits == 366) {
+                    Wprint("You have OMITted everything!  The space-time continuum is at risk.");
+                }
             }
             if (mc == m[1] && dc == d[1]) {
                 break;

src/protos.h

@@ -5,7 +5,7 @@
 /*  Function Prototypes.                                       */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -13,6 +13,18 @@
 /* Suppress unused variable warnings */
 #define UNUSED(x) (void) x
 
+#ifdef HAVE_STRDUP
+#define StrDup strdup
+#endif
+
+#ifdef HAVE_STRNCASECMP
+#define StrinCmp strncasecmp
+#endif
+
+#ifdef HAVE_STRCASECMP
+#define StrCmpi strcasecmp
+#endif
+
 /* Define a string assignment macro - be careful!!! */
 #define STRSET(x, str) { if (x) free(x); (x) = StrDup(str); }
 
@@ -22,28 +34,39 @@
 /* Characters to ignore */
 #define isempty(c) (isspace(c) || ((c) == '\\'))
 
+#define IsServerMode() (Daemon < 0)
+#define ShouldFork (!DontFork)
+
 #include "dynbuf.h"
 #include <ctype.h>
 
 int CallUserFunc (char const *name, int nargs, ParsePtr p);
 int DoFset (ParsePtr p);
 int DoFunset (ParsePtr p);
+void UnsetAllUserFuncs(void);
 void ProduceCalendar (void);
 char const *SimpleTime (int tim);
 char const *CalendarTime (int tim, int duration);
 int DoRem (ParsePtr p);
 int DoFlush (ParsePtr p);
 void DoExit (ParsePtr p);
-int ParseRem (ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals);
-int TriggerReminder (ParsePtr p, Trigger *t, TimeTrig *tim, int dse, int is_queued);
+int ParseRem (ParsePtr s, Trigger *trig, TimeTrig *tim);
+int TriggerReminder (ParsePtr p, Trigger *t, TimeTrig *tim, int dse, int is_queued, DynamicBuffer *output);
 int ShouldTriggerReminder (Trigger *t, TimeTrig *tim, int dse, int *err);
 int DoSubst (ParsePtr p, DynamicBuffer *dbuf, Trigger *t, TimeTrig *tt, int dse, int mode);
 int DoSubstFromString (char const *source, DynamicBuffer *dbuf, int dse, int tim);
 int ParseLiteralDate (char const **s, int *dse, int *tim);
 int ParseLiteralTime (char const **s, int *tim);
+expr_node *parse_expression(char const **e, int *r, Var *locals);
+
+int evaluate_expression(expr_node *node, Value *locals, Value *ans, int *nonconst);
+int evaluate_expr_node(expr_node *node, Value *locals, Value *ans, int *nonconst);
+void print_expr_tree(expr_node *node, FILE *fp);
+void unlimit_execution_time(void);
+expr_node *free_expr_tree(expr_node *node);
 int EvalExpr (char const **e, Value *v, ParsePtr p);
 int DoCoerce (char type, Value *v);
-void PrintValue  (Value *v, FILE *fp);
+char const *PrintValue  (Value *v, FILE *fp);
 int CopyValue (Value *dest, const Value *src);
 int ReadLine (void);
 int OpenFile (char const *fname);
@@ -62,8 +85,9 @@ int JulianToGregorianOffset(int y, int m);
 int ParseChar (ParsePtr p, int *err, int peek);
 int ParseToken (ParsePtr p, DynamicBuffer *dbuf);
 int ParseIdentifier (ParsePtr p, DynamicBuffer *dbuf);
+expr_node * ParseExpr(ParsePtr p, int *r);
+void print_expr_nodes_stats(void);
 int EvaluateExpr (ParsePtr p, Value *v);
-int Evaluate (char const **s, Var *locals, ParsePtr p);
 int FnPopValStack (Value *val);
 void Eprint (char const *fmt, ...);
 void Wprint (char const *fmt, ...);
@@ -71,7 +95,8 @@ void OutputLine (FILE *fp);
 void CreateParser (char const *s, ParsePtr p);
 void DestroyParser (ParsePtr p);
 int PushToken (char const *tok, ParsePtr p);
-long SystemTime (int realtime);
+int SystemTime (int realtime);
+int MinutesPastMidnight (int realtime);
 int SystemDate (int *y, int *m, int *d);
 int DoIf (ParsePtr p);
 int DoElse (ParsePtr p);
@@ -82,6 +107,7 @@ int VerifyEoln (ParsePtr p);
 int DoDebug (ParsePtr p);
 int DoBanner (ParsePtr p);
 int DoRun (ParsePtr p);
+int DoExpr (ParsePtr p);
 int DoErrMsg (ParsePtr p);
 int ClearGlobalOmits (void);
 int DoClear (ParsePtr p);
@@ -99,13 +125,26 @@ int ComputeTrigger (int today, Trigger *trig, TimeTrig *tim, int *err, int save_
 int ComputeTriggerNoAdjustDuration (int today, Trigger *trig, TimeTrig *tim, int *err, int save_in_globals, int duration_days);
 int AdjustTriggerForDuration(int today, int r, Trigger *trig, TimeTrig *tim, int save_in_globals);
 char *StrnCpy (char *dest, char const *source, int n);
+
+#ifndef HAVE_STRNCASECMP
 int StrinCmp (char const *s1, char const *s2, int n);
+#endif
+
+#ifndef HAVE_STRDUP
 char *StrDup (char const *s);
+#endif
+
+#ifndef HAVE_STRCASECMP
 int StrCmpi (char const *s1, char const *s2);
+#endif
+
+void strtolower(char *s);
+
 Var *FindVar (char const *str, int create);
+SysVar *FindSysVar (char const *name);
 int DeleteVar (char const *str);
-int SetVar (char const *str, Value *val);
-int GetVarValue (char const *str, Value *val, Var *locals, ParsePtr p);
+int SetVar (char const *str, Value const *val);
+int GetVarValue (char const *str, Value *val);
 int DoSet  (Parser *p);
 int DoUnset  (Parser *p);
 int DoDump (ParsePtr p);
@@ -114,14 +153,14 @@ void DestroyVars (int all);
 int PreserveVar (char const *name);
 int DoPreserve  (Parser *p);
 int DoSatRemind (Trigger *trig, TimeTrig *tt, ParsePtr p);
-int DoMsgCommand (char const *cmd, char const *msg);
+int DoMsgCommand (char const *cmd, char const *msg, int is_queued);
 int ParseNonSpaceChar (ParsePtr p, int *err, int peek);
 unsigned int HashVal (char const *str);
 int DateOK (int y, int m, int d);
-Operator *FindOperator (char const *name, Operator where[], int num);
-BuiltinFunc *FindFunc (char const *name, BuiltinFunc where[], int num);
+BuiltinFunc *FindBuiltinFunc (char const *name);
 int InsertIntoSortBuffer (int dse, int tim, char const *body, int typ, int prio);
 void IssueSortedReminders (void);
+UserFunc *FindUserFunc(char const *name);
 int UserFuncExists (char const *fn);
 void DSEToHeb (int dse, int *hy, int *hm, int *hd);
 int HebNameToNum (char const *mname);
@@ -138,7 +177,7 @@ int GetSysVar (char const *name, Value *val);
 int SetSysVar (char const *name, Value *val);
 void DumpSysVarByName (char const *name);
 int CalcMinsFromUTC (int dse, int tim, int *mins, int *isdst);
-void FillParagraph (char const *s);
+void FillParagraph (char const *s, DynamicBuffer *output);
 void LocalToUTC (int locdate, int loctime, int *utcdate, int *utctime);
 void UTCToLocal (int utcdate, int utctime, int *locdate, int *loctime);
 int MoonPhase (int date, int time);
@@ -164,23 +203,39 @@ void PrintJSONKeyPairString(char const *name, char const *val);
 void PrintJSONKeyPairDate(char const *name, int dse);
 void PrintJSONKeyPairDateTime(char const *name, int dt);
 void PrintJSONKeyPairTime(char const *name, int t);
-void System(char const *cmd);
+void System(char const *cmd, int queued);
 int ShellEscape(char const *in, DynamicBuffer *out);
 int AddGlobalOmit(int dse);
 void set_lat_and_long_from_components(void);
 void set_components_from_lat_and_long(void);
 
+void DebugExitFunc(void);
+
+int GetTerminalBackground(void);
+
 char const *get_day_name(int wkday);
 char const *get_month_name(int mon);
 
+void set_cloexec(FILE *fp);
 int push_call(char const *filename, char const *func, int lineno);
 void clear_callstack(void);
 int print_callstack(FILE *fp);
+int have_callstack(void);
 void pop_call(void);
 void FixSpecialType(Trigger *trig);
+void WriteJSONTrigger(Trigger const *t, int include_tags, int today);
+void WriteJSONTimeTrigger(TimeTrig const *tt);
 #ifdef REM_USE_WCHAR
 #define _XOPEN_SOURCE 600
 #include <wctype.h>
 #include <wchar.h>
-void PutWideChar(wchar_t const wc);
+void PutWideChar(wchar_t const wc, DynamicBuffer *output);
 #endif
+
+/* These functions are in utils.c and are used to detect overflow
+   in various arithmetic operators.  They have to be in separate
+   functions with extern linkage to defeat compiler optimizations
+   that would otherwise break the overflow checks. */
+extern int _private_mul_overflow(int a, int b);
+extern int _private_add_overflow(int a, int b);
+extern int _private_sub_overflow(int a, int b);

src/queue.c

@@ -5,7 +5,7 @@
 /*  Queue up reminders for subsequent execution.               */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -24,15 +24,33 @@
 #include <sys/types.h>
 #include <sys/stat.h>
 #include <sys/time.h>
+#include <time.h>
 #include <sys/select.h>
 #include <stdlib.h>
 #include <unistd.h>
-
+#include <fcntl.h>
+#include <errno.h>
 #include "types.h"
 #include "globals.h"
 #include "err.h"
 #include "protos.h"
-#include "expr.h"
+
+#undef USE_INOTIFY
+#if defined(HAVE_SYS_INOTIFY_H) && defined(HAVE_INOTIFY_INIT1)
+#define USE_INOTIFY 1
+#include <sys/inotify.h>
+
+int watch_fd = -1;
+static void consume_inotify_events(int fd);
+static int setup_inotify_watch(void);
+#endif
+
+/* A list of filenames associated with queued reminders */
+typedef struct queuedfname {
+    struct queuedfname *next;
+    char const *fname;
+} QueuedFilename;
+
 
 /* List structure for holding queued reminders */
 typedef struct queuedrem {
@@ -41,16 +59,19 @@ typedef struct queuedrem {
     int RunDisabled;
     int ntrig;
     char const *text;
+    char const *fname;
+    int lineno;
     char passthru[PASSTHRU_LEN+1];
     char sched[VAR_NAME_LEN+1];
-    DynamicBuffer tags;
     Trigger t;
     TimeTrig tt;
+    int red, green, blue;
 } QueuedRem;
 
 /* Global variables */
 
-static QueuedRem *QueueHead;
+static QueuedRem *QueueHead = NULL;
+static QueuedFilename *Files = NULL;
 static time_t FileModTime;
 static struct stat StatBuf;
 
@@ -58,9 +79,108 @@ static void CheckInitialFile (void);
 static int CalculateNextTime (QueuedRem *q);
 static QueuedRem *FindNextReminder (void);
 static int CalculateNextTimeUsingSched (QueuedRem *q);
-static void DaemonWait (struct timeval *sleep_tv);
+static void ServerWait (struct timeval *sleep_tv);
 static void reread (void);
 static void PrintQueue(void);
+static char const *QueueFilename(char const *fname);
+
+static void chomp(DynamicBuffer *buf)
+{
+    char *s = DBufValue(buf);
+    int l = DBufLen(buf);
+    while (l) {
+        if (s[l-1] == '\n') {
+            s[l-1] = 0;
+            DBufLen(buf)--;
+            l--;
+        } else {
+            break;
+        }
+    }
+}
+
+char const *SimpleTimeNoSpace(int tim)
+{
+    char *s = (char *) SimpleTime(tim);
+    if (s && *s) {
+        size_t l = strlen(s);
+        if (l > 0 && s[l-1] == ' ') {
+            s[l-1] = 0;
+        }
+    }
+    return s;
+}
+
+/***************************************************************/
+/*                                                             */
+/*  QueueFilename                                              */
+/*                                                             */
+/*  Add fname to the list of queued filenames if it's not      */
+/*  already present.  Either way, return a pointer to the      */
+/*  filename.  Returns NULL if out of memory                   */
+/*                                                             */
+/***************************************************************/
+static QueuedFilename *last_file_found = NULL;
+static char const *QueueFilename(char const *fname)
+{
+    QueuedFilename *elem = Files;
+
+    /* Optimization: We are very likely in the same file as
+       before... */
+    if (last_file_found && !strcmp(fname, last_file_found->fname)) {
+        return last_file_found->fname;
+    }
+
+    /* No such luck; search the list */
+    while(elem) {
+        if (!strcmp(elem->fname, fname)) {
+            last_file_found = elem;
+            return elem->fname;
+        }
+        elem = elem->next;
+    }
+    /* Not found... queue it */
+    elem = NEW(QueuedFilename);
+    if (!elem) return NULL;
+    elem->fname = StrDup(fname);
+    if (!elem->fname) {
+        free(elem);
+        return NULL;
+    }
+    elem->next = Files;
+    Files = elem;
+    last_file_found = elem;
+    return elem->fname;
+}
+
+static void del_reminder(QueuedRem *qid)
+{
+    QueuedRem *q = QueueHead;
+    QueuedRem *next;
+    if (!q) {
+        return;
+    }
+    if (q == qid) {
+        QueueHead = q->next;
+        if (q->text) free((void *) q->text);
+        free(q);
+        return;
+    }
+    while(q->next) {
+        next = q->next;
+        if (q->next == qid) {
+            q->next = q->next->next;
+            if (next->text) free((void *) next->text);
+            free(next);
+            return;
+        }
+        q = q->next;
+    }
+}
+
+static void del_reminder_ul(unsigned long qid) {
+    del_reminder((QueuedRem *) qid);
+}
 
 /***************************************************************/
 /*                                                             */
@@ -71,7 +191,7 @@ static void PrintQueue(void);
 /*                                                             */
 /***************************************************************/
 int QueueReminder(ParsePtr p, Trigger *trig,
-			 TimeTrig *tim, char const *sched)
+                  TimeTrig *tim, char const *sched)
 {
     QueuedRem *qelem;
 
@@ -79,37 +199,99 @@ int QueueReminder(ParsePtr p, Trigger *trig,
         trig->noqueue ||
 	tim->ttime == NO_TIME ||
 	trig->typ == CAL_TYPE ||
-	tim->ttime < SystemTime(0) / 60 ||
+	tim->ttime < MinutesPastMidnight(0) ||
 	((trig->typ == RUN_TYPE) && RunDisabled)) return OK;
 
     qelem = NEW(QueuedRem);
     if (!qelem) {
 	return E_NO_MEM;
     }
+    qelem->red = DefaultColorR;
+    qelem->green = DefaultColorG;
+    qelem->blue = DefaultColorB;
     qelem->text = StrDup(p->pos);  /* Guaranteed that parser is not nested. */
     if (!qelem->text) {
 	free(qelem);
 	return E_NO_MEM;
     }
+    qelem->fname = QueueFilename(FileName);
+    if (!qelem->fname) {
+        free((void *) qelem->text);
+        free(qelem);
+        return E_NO_MEM;
+    }
+
+    qelem->lineno = LineNo;
     NumQueued++;
     qelem->typ = trig->typ;
     strcpy(qelem->passthru, trig->passthru);
     qelem->tt = *tim;
     qelem->t = *trig;
     DBufInit(&(qelem->t.tags));
+    DBufPuts(&(qelem->t.tags), DBufValue(&(trig->tags)));
+    if (SynthesizeTags) {
+	AppendTag(&(qelem->t.tags), SynthesizeTag());
+    }
     qelem->next = QueueHead;
     qelem->RunDisabled = RunDisabled;
     qelem->ntrig = 0;
     strcpy(qelem->sched, sched);
-    DBufInit(&(qelem->tags));
-    DBufPuts(&(qelem->tags), DBufValue(&(trig->tags)));
-    if (SynthesizeTags) {
-	AppendTag(&(qelem->tags), SynthesizeTag());
-    }
     QueueHead = qelem;
     return OK;
 }
 
+static void
+maybe_close(int fd)
+{
+    int new_fd;
+    /* Don't close descriptors connected to a TTY, except for stdin */
+    if (fd && isatty(fd)) return;
+
+    (void) close(fd);
+    if (fd != STDIN_FILENO) {
+        new_fd = open("/dev/null", O_WRONLY);
+    } else {
+        new_fd = open("/dev/null", O_RDONLY);
+    }
+
+    /* If the open failed... well... not much we can do */
+    if (new_fd < 0) return;
+
+    /* If we got back the same fd as what we just closed, aces! */
+    if (fd == new_fd) return;
+
+    (void) dup2(new_fd, fd);
+    (void) close(new_fd);
+}
+
+void
+SigContHandler(int d)
+{
+    UNUSED(d);
+}
+
+static void
+print_num_queued(void)
+{
+	int nqueued = 0;
+	QueuedRem *q = QueueHead;
+	while(q) {
+	    if (q->tt.nexttime != NO_TIME) {
+		nqueued++;
+	    }
+	    q = q->next;
+	}
+        if (DaemonJSON) {
+            printf("{");
+            PrintJSONKeyPairString("response", "queued");
+            PrintJSONKeyPairInt("nqueued", nqueued);
+            printf("\"command\":\"STATUS\"}\n");
+        } else {
+            printf("NOTE queued %d\n", nqueued);
+        }
+	fflush(stdout);
+}
+
 /***************************************************************/
 /*                                                             */
 /*  HandleQueuedReminders                                      */
@@ -123,17 +305,26 @@ void HandleQueuedReminders(void)
     int TimeToSleep;
     unsigned SleepTime;
     Parser p;
-    Trigger trig;
     struct timeval tv;
     struct timeval sleep_tv;
     struct sigaction sa;
+    char qid[64];
 
-    /* Suppress the BANNER from being issued */
-    DidMsgReminder = 1;
+    /* Disable any potential pending SIGALRMs */
+    alarm(0);
+
+    /* Un-limit execution time */
+    unlimit_execution_time();
 
     /* Turn off sorting -- otherwise, TriggerReminder has no effect! */
     SortByDate = 0;
 
+    /* Free FileName if necessary */
+    if (FileName) {
+        free(FileName);
+        FileName = NULL;
+    }
+
     /* If we are not connected to a tty, then we must close the
      * standard file descriptors. This is to prevent someone
      * doing:
@@ -143,9 +334,10 @@ void HandleQueuedReminders(void)
      * processed correctly are RUN commands, provided they mail
      * the result back or use their own resource (as a window).
      */
-    if (!DontFork && (!isatty(1) || !isatty(2))) {
-	close(1);
-	close(2);
+    if (ShouldFork) {
+        maybe_close(STDIN_FILENO);
+        maybe_close(STDOUT_FILENO);
+        maybe_close(STDERR_FILENO);
     }
 
     /* If we're a daemon, get the mod time of initial file */
@@ -160,17 +352,22 @@ void HandleQueuedReminders(void)
     /* Initialize the queue - initialize all the entries time of issue */
 
     while (q) {
-	q->tt.nexttime = (int) (SystemTime(1)/60 - 1);
+	q->tt.nexttime = MinutesPastMidnight(1) - 1;
 	q->tt.nexttime = CalculateNextTime(q);
 	q = q->next;
     }
 
-    if (!DontFork || Daemon) {
+    if (ShouldFork || Daemon) {
         sa.sa_handler = SigIntHandler;
         sa.sa_flags = 0;
         (void) sigaction(SIGINT, &sa, NULL);
+        sa.sa_handler = SigContHandler;
+        (void) sigaction(SIGCONT, &sa, NULL);
     }
 
+#ifdef USE_INOTIFY
+    watch_fd = setup_inotify_watch();
+#endif
     /* Sit in a loop, issuing reminders when necessary */
     while(1) {
 	q = FindNextReminder();
@@ -179,7 +376,7 @@ void HandleQueuedReminders(void)
 	if (!q && !Daemon) break;
 
 	if (Daemon && !q) {
-	    if (Daemon < 0) {
+	    if (IsServerMode()) {
 		/* Sleep until midnight */
 		TimeToSleep = MINUTES_PER_DAY*60 - SystemTime(1);
 	    } else {
@@ -196,9 +393,7 @@ void HandleQueuedReminders(void)
                 SleepTime = 60*Daemon;
             }
 
-	    /* Wake up once a minute to recalibrate sleep time in
-	       case of laptop hibernation */
-	    if (Daemon < 0) {
+	    if (IsServerMode()) {
 		/* Wake up on the next exact minute */
                 gettimeofday(&tv, NULL);
                 sleep_tv.tv_sec = 60 - (tv.tv_sec % 60);
@@ -208,7 +403,9 @@ void HandleQueuedReminders(void)
                 } else {
                     sleep_tv.tv_usec = 0;
                 }
-		DaemonWait(&sleep_tv);
+		ServerWait(&sleep_tv);
+                /* A DEL command might have deleted our queued reminder! */
+                q = FindNextReminder();
 	    } else {
 		sleep(SleepTime);
             }
@@ -222,14 +419,16 @@ void HandleQueuedReminders(void)
 	    if (!Daemon) {
 		int y, m, d;
 		if (RealToday != SystemDate(&y, &m, &d)) {
-			exit(0);
+			exit(EXIT_SUCCESS);
 		}
 	    }
 
-	    if (Daemon > 0 && SleepTime) CheckInitialFile();
+	    if (Daemon > 0 && SleepTime) {
+                CheckInitialFile();
+            }
 
 	    if (Daemon && !q) {
-		if (Daemon < 0) {
+		if (IsServerMode()) {
 		    /* Sleep until midnight */
 		    TimeToSleep = MINUTES_PER_DAY*60 - SystemTime(1);
 		} else {
@@ -244,31 +443,60 @@ void HandleQueuedReminders(void)
 	/* Do NOT trigger the reminder if tt.nexttime is more than a
 	   minute in the past.  This can happen if the clock is
 	   changed or a laptop awakes from hibernation.
-	   However, DO trigger if tt.nexttime == tt.ttime so all
+	   However, DO trigger if tt.nexttime == tt.ttime and we're
+           within MaxLateTrigger minutes so all
 	   queued reminders are triggered at least once. */
 	if ((SystemTime(1) - (q->tt.nexttime * 60) <= 60) ||
-	    (q->tt.nexttime == q->tt.ttime)) {
+	    (q->tt.nexttime == q->tt.ttime &&
+             (MaxLateMinutes == 0 || SystemTime(1) - (q->tt.nexttime * 60) <= 60 * MaxLateMinutes))) {
 	    /* Trigger the reminder */
 	    CreateParser(q->text, &p);
-	    trig.typ = q->typ;
-	    strcpy(trig.passthru, q->passthru);
 	    RunDisabled = q->RunDisabled;
-	    if (Daemon < 0) {
-		printf("NOTE reminder %s",
-		       SimpleTime(q->tt.ttime));
-		printf("%s", SimpleTime(SystemTime(1)/60));
-		if (!*DBufValue(&q->tags)) {
-		    printf("*\n");
-		} else {
-		    printf("%s\n", DBufValue(&(q->tags)));
-		}
+	    if (IsServerMode() && q->typ != RUN_TYPE) {
+                if (DaemonJSON) {
+                    printf("{\"response\":\"reminder\",");
+                    snprintf(qid, sizeof(qid), "%lx", (unsigned long) q);
+                    PrintJSONKeyPairString("qid", qid);
+                    PrintJSONKeyPairString("ttime", SimpleTimeNoSpace(q->tt.ttime));
+                    PrintJSONKeyPairString("now", SimpleTimeNoSpace(MinutesPastMidnight(1)));
+                    PrintJSONKeyPairString("tags", DBufValue(&q->t.tags));
+                } else {
+                    printf("NOTE reminder %s",
+                           SimpleTime(q->tt.ttime));
+                    printf("%s", SimpleTime(MinutesPastMidnight(1)));
+                    if (!*DBufValue(&q->t.tags)) {
+                        printf("*\n");
+                    } else {
+                        printf("%s\n", DBufValue(&(q->t.tags)));
+                    }
+                }
 	    }
 
 	    /* Set up global variables so some functions like trigdate()
 	       and trigtime() work correctly                             */
 	    SaveAllTriggerInfo(&(q->t), &(q->tt), DSEToday, q->tt.ttime, 1);
-	    (void) TriggerReminder(&p, &trig, &q->tt, DSEToday, 1);
-	    if (Daemon < 0) {
+            FileName = (char *) q->fname;
+            DefaultColorR = q->red;
+            DefaultColorG = q->green;
+            DefaultColorB = q->blue;
+            /* Make a COPY of q->t because TriggerReminder can change q->t.typ */
+            Trigger tcopy = q->t;
+            if (DaemonJSON) {
+                DynamicBuffer out;
+                DBufInit(&out);
+                (void) TriggerReminder(&p, &tcopy, &q->tt, DSEToday, 1, &out);
+                if (q->typ != RUN_TYPE) {
+                    printf("\"body\":\"");
+                    chomp(&out);
+                    PrintJSONString(DBufValue(&out));
+                    printf("\"}\n");
+                }
+                DBufFree(&out);
+            } else {
+                (void) TriggerReminder(&p, &tcopy, &q->tt, DSEToday, 1, NULL);
+            }
+            FileName = NULL;
+	    if (IsServerMode() && !DaemonJSON && q->typ != RUN_TYPE) {
 		printf("NOTE endreminder\n");
 	    }
 	    fflush(stdout);
@@ -277,8 +505,26 @@ void HandleQueuedReminders(void)
 
 	/* Calculate the next trigger time */
 	q->tt.nexttime = CalculateNextTime(q);
+
+        if (q->tt.nexttime != NO_TIME) {
+            /* If trigger time is way in the past because computer has been
+               suspended or hibernated, remove from queue */
+            if (q->tt.ttime < MinutesPastMidnight(1) - MaxLateMinutes &&
+                q->tt.nexttime < MinutesPastMidnight(1) - MaxLateMinutes) {
+                q->tt.nexttime = NO_TIME;
+            }
+        }
+
+        /* If queued reminder has expired, actually remove it from queue
+           and update status */
+        if (q->tt.nexttime == NO_TIME) {
+            del_reminder(q);
+            if (IsServerMode()) {
+                print_num_queued();
+            }
+        }
     }
-    exit(0);
+    exit(EXIT_SUCCESS);
 }
 
 
@@ -396,7 +642,25 @@ static void CheckInitialFile(void)
     /* If date has rolled around, or file has changed, spawn a new version. */
     time_t tim = FileModTime;
     int y, m, d;
+#ifdef USE_INOTIFY
+    char buf[sizeof(struct inotify_event) + NAME_MAX + 1];
+    int n;
+#endif
 
+#ifdef USE_INOTIFY
+    /* If there are any inotify events, reread */
+    if (watch_fd >= 0) {
+        while(1) {
+            n = read(watch_fd, buf, sizeof(buf));
+            if (n < 0 && errno == EINTR) continue;
+            if (n > 0) {
+                close(watch_fd);
+                reread();
+            }
+            break;
+        }
+    }
+#endif
     if (stat(InitialFile, &StatBuf) == 0) tim = StatBuf.st_mtime;
     if (tim != FileModTime ||
 	RealToday != SystemDate(&y, &m, &d)) {
@@ -474,7 +738,11 @@ static void
 json_queue(QueuedRem const *q)
 {
     int done = 0;
+    if (DaemonJSON) {
+        printf("{\"response\":\"queue\",\"queue\":");
+    }
     printf("[");
+    char idbuf[64];
     while(q) {
 	if (q->tt.nexttime == NO_TIME) {
 	    q = q->next;
@@ -485,6 +753,14 @@ json_queue(QueuedRem const *q)
 	}
 	done = 1;
 	printf("{");
+        WriteJSONTrigger(&(q->t), 1, DSEToday);
+        WriteJSONTimeTrigger(&(q->tt));
+        snprintf(idbuf, sizeof(idbuf), "%lx", (unsigned long) q);
+        PrintJSONKeyPairString("qid", idbuf);
+        PrintJSONKeyPairInt("rundisabled", q->RunDisabled);
+        PrintJSONKeyPairInt("ntrig", q->ntrig);
+        PrintJSONKeyPairString("filename", q->fname);
+        PrintJSONKeyPairInt("lineno", q->lineno);
 	switch(q->typ) {
 	case NO_TYPE: PrintJSONKeyPairString("type", "NO_TYPE"); break;
 	case MSG_TYPE: PrintJSONKeyPairString("type", "MSG_TYPE"); break;
@@ -494,29 +770,12 @@ json_queue(QueuedRem const *q)
 	case PS_TYPE: PrintJSONKeyPairString("type", "PS_TYPE"); break;
 	case PSF_TYPE: PrintJSONKeyPairString("type", "PSF_TYPE"); break;
 	case MSF_TYPE: PrintJSONKeyPairString("type", "MSF_TYPE"); break;
-	case PASSTHRU_TYPE: PrintJSONKeyPairString("type", "PASSTHRU_TYPE"); break;
+	case PASSTHRU_TYPE:
+            PrintJSONKeyPairString("type", "PASSTHRU_TYPE");
+            PrintJSONKeyPairString("passthru", q->passthru);
+            break;
 	default: PrintJSONKeyPairString("type", "?"); break;
 	}
-	PrintJSONKeyPairInt("rundisabled", q->RunDisabled);
-	PrintJSONKeyPairInt("ntrig", q->ntrig);
-	PrintJSONKeyPairTime("ttime", q->tt.ttime);
-	PrintJSONKeyPairTime("nextttime", q->tt.nexttime);
-	PrintJSONKeyPairInt("delta", q->tt.delta);
-	if (q->tt.rep != NO_TIME) {
-	    PrintJSONKeyPairInt("rep", q->tt.rep);
-	}
-	if (q->tt.duration != NO_TIME) {
-	    PrintJSONKeyPairInt("duration", q->tt.duration);
-	}
-	if (q->passthru[0]) {
-	    PrintJSONKeyPairString("passthru", q->passthru);
-	}
-	if (q->sched[0]) {
-	    PrintJSONKeyPairString("sched", q->sched);
-	}
-	if (DBufLen(&(q->tags))) {
-	    PrintJSONKeyPairString("tags", DBufValue(&(q->tags)));
-	}
 
 	/* Last one is a special case - no trailing comma */
 	printf("\"");
@@ -530,30 +789,48 @@ json_queue(QueuedRem const *q)
 	printf("\"}");
 	q = q->next;
     }
-    printf("]\n");
+    printf("]");
+    if (DaemonJSON) {
+        printf(",\"command\":\"QUEUE\"}\n");
+    } else {
+        printf("\n");
+    }
 }
 
 /***************************************************************/
 /*                                                             */
-/*  DaemonWait                                                 */
+/*  ServerWait                                                 */
 /*                                                             */
-/*  Sleep or read command from stdin in "daemon -1" mode       */
+/*  Sleep or read command from stdin in server mode            */
 /*                                                             */
 /***************************************************************/
-static void DaemonWait(struct timeval *sleep_tv)
+static void ServerWait(struct timeval *sleep_tv)
 {
     fd_set readSet;
     int retval;
     int y, m, d;
+    int max = 1;
     char cmdLine[256];
 
     FD_ZERO(&readSet);
     FD_SET(0, &readSet);
-    retval = select(1, &readSet, NULL, NULL, sleep_tv);
+
+#ifdef USE_INOTIFY
+    if (watch_fd >= 0) {
+        FD_SET(watch_fd, &readSet);
+        if (watch_fd > max-1)
+            max = watch_fd+1;
+    }
+#endif
+    retval = select(max, &readSet, NULL, NULL, sleep_tv);
 
     /* If date has rolled around, restart */
     if (RealToday != SystemDate(&y, &m, &d)) {
-	printf("NOTE newdate\nNOTE reread\n");
+        if (DaemonJSON) {
+            printf("{\"response\":\"newdate\"}\n{\"response\":\"reread\",\"command\":\"newdate\"}\n");
+        } else {
+            printf("NOTE newdate\nNOTE reread\n");
+        }
 	fflush(stdout);
 	reread();
     }
@@ -561,70 +838,108 @@ static void DaemonWait(struct timeval *sleep_tv)
     /* If nothing readable or interrupted system call, return */
     if (retval <= 0) return;
 
+    /* If inotify watch descriptor is readable, handle it */
+#ifdef USE_INOTIFY
+    if (watch_fd >= 0) {
+        if (FD_ISSET(watch_fd, &readSet)) {
+            consume_inotify_events(watch_fd);
+            if (DaemonJSON) {
+                printf("{\"response\":\"reread\",\"command\":\"inotify\"}\n");
+            } else {
+                /* In deprecated server mode, we need to spit out
+                   a NOTE newdate to force the front-end to redraw
+                   the calendar */
+                printf("NOTE newdate\nNOTE reread\n");
+            }
+            fflush(stdout);
+            reread();
+        }
+    }
+#endif
     /* If stdin not readable, return */
     if (!FD_ISSET(0, &readSet)) return;
 
     /* If EOF on stdin, exit */
     if (feof(stdin)) {
-	exit(0);
+	exit(EXIT_SUCCESS);
     }
 
     /* Read a line from stdin and interpret it */
     if (!fgets(cmdLine, sizeof(cmdLine), stdin)) {
-	exit(0);
+	exit(EXIT_SUCCESS);
     }
 
     if (!strcmp(cmdLine, "EXIT\n")) {
-	exit(0);
+	exit(EXIT_SUCCESS);
     } else if (!strcmp(cmdLine, "STATUS\n")) {
-	int nqueued = 0;
-	QueuedRem *q = QueueHead;
-	while(q) {
-	    if (q->tt.nexttime != NO_TIME) {
-		nqueued++;
-	    }
-	    q = q->next;
-	}
-	printf("NOTE queued %d\n", nqueued);
-	fflush(stdout);
+        print_num_queued();
     } else if (!strcmp(cmdLine, "QUEUE\n")) {
-	printf("NOTE queue\n");
-	QueuedRem *q = QueueHead;
-	while (q) {
-	    if (q->tt.nexttime != NO_TIME) {
-		switch (q->typ) {
-		case NO_TYPE: printf("NO_TYPE "); break;
-		case MSG_TYPE: printf("MSG_TYPE "); break;
-		case RUN_TYPE: printf("RUN_TYPE "); break;
-		case CAL_TYPE: printf("CAL_TYPE "); break;
-		case SAT_TYPE: printf("SAT_TYPE "); break;
-		case PS_TYPE: printf("PS_TYPE "); break;
-		case PSF_TYPE: printf("PSF_TYPE "); break;
-		case MSF_TYPE: printf("MSF_TYPE "); break;
-		case PASSTHRU_TYPE: printf("PASSTHRU_TYPE "); break;
-		default: printf("? "); break;
-		}
-		printf("RunDisabled=%d ntrig=%d ttime=%02d:%02d nexttime=%02d:%02d delta=%d rep=%d duration=%d ", q->RunDisabled, q->ntrig, q->tt.ttime/60, q->tt.ttime % 60, q->tt.nexttime / 60, q->tt.nexttime % 60, q->tt.delta, (q->tt.rep != NO_TIME ? q->tt.rep : -1), (q->tt.duration != NO_TIME ? q->tt.duration : -1));
-		printf("%s %s %s\n",
-		       (q->passthru[0] ? q->passthru : "*"),
-		       (q->sched[0] ? q->sched : "*"),
-		       q->text ? q->text : "NULL");
+        if (DaemonJSON) {
+            json_queue(QueueHead);
+        } else {
+            printf("NOTE queue\n");
+            QueuedRem *q = QueueHead;
+            while (q) {
+                if (q->tt.nexttime != NO_TIME) {
+                    switch (q->typ) {
+                    case NO_TYPE: printf("NO_TYPE"); break;
+                    case MSG_TYPE: printf("MSG_TYPE"); break;
+                    case RUN_TYPE: printf("RUN_TYPE"); break;
+                    case CAL_TYPE: printf("CAL_TYPE"); break;
+                    case SAT_TYPE: printf("SAT_TYPE"); break;
+                    case PS_TYPE: printf("PS_TYPE"); break;
+                    case PSF_TYPE: printf("PSF_TYPE"); break;
+                    case MSF_TYPE: printf("MSF_TYPE"); break;
+                    case PASSTHRU_TYPE: printf("PASSTHRU_TYPE"); break;
+                    default: printf("?"); break;
+                    }
+                    printf(" RunDisabled=%d ntrig=%d ttime=%02d:%02d nexttime=%02d:%02d delta=%d rep=%d duration=%d ", q->RunDisabled, q->ntrig, q->tt.ttime/60, q->tt.ttime % 60, q->tt.nexttime / 60, q->tt.nexttime % 60, q->tt.delta, (q->tt.rep != NO_TIME ? q->tt.rep : -1), (q->tt.duration != NO_TIME ? q->tt.duration : -1));
+                    printf("%s %s %s\n",
+                           (q->passthru[0] ? q->passthru : "*"),
+                           (q->sched[0] ? q->sched : "*"),
+                           q->text ? q->text : "NULL");
+                }
+                q = q->next;
 	    }
-	    q = q->next;
+            printf("NOTE endqueue\n");
 	}
-	printf("NOTE endqueue\n");
 	fflush(stdout);
     } else if (!strcmp(cmdLine, "JSONQUEUE\n")) {
-	printf("NOTE JSONQUEUE\n");
+	if (!DaemonJSON) {
+            printf("NOTE JSONQUEUE\n");
+        }
 	json_queue(QueueHead);
-	printf("NOTE ENDJSONQUEUE\n");
+	if (!DaemonJSON) {
+            printf("NOTE ENDJSONQUEUE\n");
+        }
 	fflush(stdout);
     } else if (!strcmp(cmdLine, "REREAD\n")) {
-	printf("NOTE reread\n");
+        if (DaemonJSON) {
+            printf("{\"response\":\"reread\",\"command\":\"REREAD\"}\n");
+        } else {
+            printf("NOTE reread\n");
+        }
 	fflush(stdout);
 	reread();
+    } else if (!strncmp(cmdLine, "DEL ", 4)) {
+        unsigned long qid;
+        if (sscanf(cmdLine, "DEL %lx", &qid) == 1) {
+            del_reminder_ul(qid);
+        }
+        print_num_queued();
+        fflush(stdout);
     } else {
-	printf("ERR Invalid daemon command: %s", cmdLine);
+        if (DaemonJSON) {
+            size_t l = strlen(cmdLine);
+            if (l && cmdLine[l-1] == '\n') {
+                cmdLine[l-1] = 0;
+            }
+            printf("{\"response\":\"error\",\"error\":\"Unknown command\",\"command\":\"");
+            PrintJSONString(cmdLine);
+            printf("\"}\n");
+        } else {
+            printf("ERR Invalid daemon command: %s", cmdLine);
+        }
 	fflush(stdout);
     }
 }
@@ -641,3 +956,56 @@ static void reread(void)
     execvp(ArgV[0], (char **) ArgV);
 }
 
+#ifdef USE_INOTIFY
+static void consume_inotify_events(int fd)
+{
+    char buf[sizeof(struct inotify_event) + NAME_MAX + 1];
+    int n;
+
+    struct timespec sleeptime;
+
+    int slept = 0;
+    /* Consume all the inotify events */
+    while(1) {
+        n = read(fd, buf, sizeof(buf));
+        if (n > 0) {
+            /* Something new since we slept */
+            slept = 0;
+        }
+        if (n < 0) {
+            if (errno == EINTR) continue;
+            if (slept) {
+                /* Nothing new since we slept */
+                return;
+            }
+            slept = 1;
+            /* HACK: sleep for 0.2 seconds to let multiple events queue up so we
+               only do a single reread */
+            sleeptime.tv_sec = 0;
+            sleeptime.tv_nsec = 200000000;
+            nanosleep(&sleeptime, NULL);
+        }
+    }
+}
+
+static int setup_inotify_watch(void)
+{
+    int fd;
+
+    /* Don't inotify_watch stdin */
+    if (!strcmp(InitialFile, "-")) {
+        return -1;
+    }
+
+    fd = inotify_init1(IN_NONBLOCK | IN_CLOEXEC);
+    if (fd < 0) {
+        return fd;
+    }
+    if (inotify_add_watch(fd, InitialFile, IN_CLOSE_WRITE | IN_CREATE | IN_DELETE | IN_MODIFY | IN_MOVED_FROM | IN_MOVED_TO) < 0) {
+        close(fd);
+        return -1;
+    }
+    return fd;
+}
+
+#endif

src/rem2ps.c

@@ -5,7 +5,7 @@
 /*  Print a PostScript calendar.                               */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -186,19 +186,19 @@ JSONToCalEntry(DynamicBuffer *buf)
     val = json_parse(DBufValue(buf), DBufLen(buf));
     if (!val) {
 	fprintf(stderr, "Unable to parse JSON line `%s'\n", DBufValue(buf));
-	exit(1);
+	exit(EXIT_FAILURE);
     }
 
     if (val->type != json_object) {
 	fprintf(stderr, "Expecting JSON object; found `%s'\n",
 		DBufValue(buf));
-	exit(1);
+	exit(EXIT_FAILURE);
     }
 
     c = NEW(CalEntry);
     if (!c) {
 	fprintf(stderr, "malloc failed - aborting.\n");
-	exit(1);
+	exit(EXIT_FAILURE);
     }
     c->next = NULL;
     c->special = SPECIAL_NORMAL;
@@ -221,7 +221,7 @@ JSONToCalEntry(DynamicBuffer *buf)
 		c->entry = malloc(strlen(s)+1);
 		if (!c->entry) {
 		    fprintf(stderr, "malloc failed - aborting.\n");
-		    exit(1);
+		    exit(EXIT_FAILURE);
 		}
 		strcpy(c->entry, s);
 		got_body = 1;
@@ -253,7 +253,7 @@ JSONToCalEntry(DynamicBuffer *buf)
 
     if (!got_body || !got_date) {
 	fprintf(stderr, "Could not parse line `%s'\n", DBufValue(buf));
-	exit(1);
+	exit(EXIT_FAILURE);
     }
     return c;
 }
@@ -272,7 +272,7 @@ TextToCalEntry(DynamicBuffer *buf)
     CalEntry *c = NEW(CalEntry);
     if (!c) {
 	fprintf(stderr, "malloc failed - aborting.\n");
-	exit(1);
+	exit(EXIT_FAILURE);
     }
     c->next = NULL;
     c->special = SPECIAL_NORMAL;
@@ -296,7 +296,7 @@ TextToCalEntry(DynamicBuffer *buf)
     c->entry = malloc(strlen(startOfBody) + 1);
     if (!c->entry) {
 	fprintf(stderr, "malloc failed - aborting.\n");
-	exit(1);
+	exit(EXIT_FAILURE);
     }
     strcpy(c->entry, startOfBody);
 
@@ -343,14 +343,14 @@ int main(int argc, char *argv[])
 	DBufGets(&buf, stdin);
 	if (first_line && (!strcmp(DBufValue(&buf), "["))) {
 	    fprintf(stderr, "Rem2PS: It appears that you have invoked Remind with the -ppp option.\n        Please use either -p or -pp, but not -ppp.\n");
-	    exit(1);
+	    exit(EXIT_FAILURE);
 	}
 	first_line = 0;
 	if (!strcmp(DBufValue(&buf), PSBEGIN) ||
 	    !strcmp(DBufValue(&buf), PSBEGIN2)) {
 	    if (!validfile) {
 		if (Verbose) {
-		    fprintf(stderr, "Rem2PS: Version %s Copyright 1992-2023 by Dianne Skoll\n\n", VERSION);
+		    fprintf(stderr, "Rem2PS: Version %s Copyright 1992-2024 by Dianne Skoll\n\n", VERSION);
 		    fprintf(stderr, "Generating PostScript calendar\n");
 		}
 	    }
@@ -361,7 +361,7 @@ int main(int argc, char *argv[])
     if (!validfile) {
 	fprintf(stderr, "Rem2PS: Couldn't find any calendar data - are you\n");
 	fprintf(stderr, "        sure you fed me input produced by remind -p ...?\n");
-	exit(1);
+	exit(EXIT_FAILURE);
     }
     printf("%%%%Trailer\n");
     printf("%%%%Pages: %d\n", validfile);
@@ -486,7 +486,7 @@ void DoPsCal(void)
     while(1) {
 	if (feof(stdin)) {
 	    fprintf(stderr, "Input from REMIND is corrupt!\n");
-	    exit(1);
+	    exit(EXIT_FAILURE);
 	}
 
 	DBufGets(&buf, stdin);
@@ -952,7 +952,7 @@ void Init(int argc, char *argv[])
 		fprintf(stderr, "   WxHin  Specify size in inches (W and H are decimal numbers)\n");
 		fprintf(stderr, "   WxHcm  Specify size in centimetres (W and H are decimal numbers)\n");
 		fprintf(stderr, "Default media type is %s\n", DefaultPage[0].name);
-		exit(1);
+		exit(EXIT_FAILURE);
 	    }
 	    break;
 
@@ -1033,7 +1033,7 @@ void Usage(char const *s)
     fprintf(stderr, "-e            Make calendar fill entire page\n");
     fprintf(stderr, "-x            Put day numbers on left instead of right\n");
     fprintf(stderr, "-o[lrtb] marg Specify left, right, top and bottom margins\n");
-    exit(1);
+    exit(EXIT_FAILURE);
 }
 
 /***************************************************************/

src/rem2ps.h

@@ -5,7 +5,7 @@
 /*  Define the PostScript prologue                             */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -14,7 +14,7 @@ char *PSProlog1[] =
 {
     "% This file was produced by Remind and Rem2PS, written by",
     "% Dianne Skoll.",
-    "% Remind and Rem2PS are Copyright 1992-2023 Dianne Skoll.",
+    "% Remind and Rem2PS are Copyright 1992-2024 Dianne Skoll.",
     "/ISOLatin1Encoding where { pop save true }{ false } ifelse",
     "  /ISOLatin1Encoding [ StandardEncoding 0 45 getinterval aload pop /minus",
     "    StandardEncoding 46 98 getinterval aload pop /dotlessi /grave /acute",

src/sort.c

@@ -5,7 +5,7 @@
 /*  Routines for sorting reminders by trigger date             */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -18,7 +18,6 @@
 #include <stdlib.h>
 #include "types.h"
 #include "protos.h"
-#include "expr.h"
 #include "globals.h"
 #include "err.h"
 
@@ -136,7 +135,7 @@ void IssueSortedReminders(void)
 	switch(cur->typ) {
 	case MSG_TYPE:
 	    if (MsgCommand && *MsgCommand) {
-		DoMsgCommand(MsgCommand, cur->text);
+		DoMsgCommand(MsgCommand, cur->text, 0);
             } else {
 		if (cur->trigdate != olddate) {
 		    IssueSortBanner(cur->trigdate);
@@ -151,11 +150,11 @@ void IssueSortedReminders(void)
                 IssueSortBanner(cur->trigdate);
                 olddate = cur->trigdate;
             }
-	    FillParagraph(cur->text);
+	    FillParagraph(cur->text, NULL);
 	    break;
 
 	case RUN_TYPE:
-	    System(cur->text);
+	    System(cur->text, 0);
 	    break;
 	}
 

src/token.c

@@ -6,7 +6,7 @@
 /*  classifying the tokens parsed.                             */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -56,6 +56,7 @@ Token TokArray[] = {
     { "endif",		5,	T_EndIf,	0 },
     { "errmsg",         6,      T_ErrMsg,       0 },
     { "exit",		4,	T_Exit,		0 },
+    { "expr",           4,      T_Expr,         0 },
     { "february",	3,	T_Month,	1 },
     { "first",          5,      T_Ordinal,      0 },
     { "flush",		5,	T_Flush,	0 },

src/trigger.c

@@ -5,7 +5,7 @@
 /*  Routines for figuring out the trigger date of a reminder   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -15,7 +15,6 @@
 
 #include <stdlib.h>
 #include "types.h"
-#include "expr.h"
 #include "protos.h"
 #include "globals.h"
 #include "err.h"
@@ -72,7 +71,10 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	    m++;
 	    if (m == 12) { m = 0; y++; }
 	}
-	while (trig->d > DaysInMonth(m, trig->y)) m++;
+	while (trig->d > DaysInMonth(m, y)) {
+            m++;
+            if (m == 12) { m = 0; y++; }
+        }
 	j = DSE(y, m, trig->d);
 	return j;
 
@@ -241,6 +243,7 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 
     case GOT_WD+GOT_MON+GOT_YR:
 	if (y > trig->y || (y == trig->y && m > trig->m)) return -1;
+        /* cppcheck-suppress knownConditionTrueFalse */
 	if (trig->y > y || (trig->y == y && trig->m > m)) {
 	    j = DSE(trig->y, trig->m, 1);
             ADVANCE_TO_WD(j, trig->wd);
@@ -324,8 +327,11 @@ static int GetNextTriggerDate(Trigger *trig, int start, int *err, int *nextstart
 		break;
 	    }
 	    start--;
+            if (start < 0) {
+                break;
+            }
 	}
-	if (iter > MaxSatIter) {
+	if (start < 0 || iter > MaxSatIter) {
 	    /* omitfunc must have returned "true" too often */
 	    *err = E_CANT_TRIG;
 	    return -2;
@@ -388,6 +394,10 @@ static int GetNextTriggerDate(Trigger *trig, int start, int *err, int *nextstart
 		break;
 	    }
 	    simple--;
+            if (simple < 0) {
+                *err = E_CANT_TRIG;
+                return -2;
+            }
 	}
 	if (iter > MaxSatIter) {
 	    *err = E_CANT_TRIG;

src/types.h

@@ -5,7 +5,7 @@
 /*  Type definitions all dumped here.                          */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -13,6 +13,22 @@
 #include <limits.h>
 #include "dynbuf.h"
 
+typedef struct udf_struct UserFunc;
+
+/* Define the types of values */
+#define ERR_TYPE       0
+#define INT_TYPE       1
+#define TIME_TYPE      2
+#define DATE_TYPE      3
+#define STR_TYPE       4
+#define DATETIME_TYPE  5
+#define SPECIAL_TYPE   6 /* Only for system variables */
+#define CONST_INT_TYPE 7 /* Only for system variables */
+
+#define BEG_OF_EXPR '['
+#define END_OF_EXPR ']'
+#define COMMA ','
+
 /* Values */
 typedef struct {
     char type;
@@ -22,29 +38,61 @@ typedef struct {
     } v;
 } Value;
 
-/* Define the type of operators */
-typedef struct {
-    char const *name;
-    char prec;
-    char type;
-    int (*func)(void);
-} Operator;
+/* New-style expr_node structure and constants */
+enum expr_node_type
+{
+    N_FREE,
+    N_ERROR,
+    N_CONSTANT,
+    N_LOCAL_VAR,
+    N_SHORT_VAR,
+    N_VARIABLE,
+    N_SHORT_SYSVAR,
+    N_SYSVAR,
+    N_BUILTIN_FUNC,
+    N_SHORT_USER_FUNC,
+    N_USER_FUNC,
+    N_OPERATOR,
+};
 
 /* Structure for passing in Nargs and out RetVal from functions */
 typedef struct {
     int nargs;
+    Value *args;
     Value retval;
 } func_info;
 
+/* Forward reference */
+typedef struct expr_node_struct expr_node;
+
 /* Define the type of user-functions */
 typedef struct {
     char const *name;
     char minargs;
     char maxargs;
     char is_constant;
+    /* Old-style function calling convention */
     int (*func)(func_info *);
+
+    /* New-style function calling convention */
+    int (*newfunc)(expr_node *node, Value *locals, Value *ans, int *nonconst);
 } BuiltinFunc;
 
+#define SHORT_NAME_BUF 16
+typedef struct expr_node_struct {
+    struct expr_node_struct *child;
+    struct expr_node_struct *sibling;
+    enum expr_node_type type;
+    int num_kids;
+    union {
+        Value value;
+        int arg;
+        BuiltinFunc *builtin_func;
+        char name[SHORT_NAME_BUF];
+        int (*operator_func) (struct expr_node_struct *node, Value *locals, Value *ans, int *nonconst);
+    } u;
+} expr_node;
+
 /* Define the structure of a variable */
 typedef struct var {
     struct var *next;
@@ -142,6 +190,8 @@ typedef Parser *ParsePtr;  /* Pointer to parser structure */
 #define MSF_TYPE 7
 #define PASSTHRU_TYPE 8
 
+/* For function arguments */
+#define NO_MAX 127
 
 /* DEFINES for debugging flags */
 #define DB_PRTLINE      1
@@ -150,6 +200,7 @@ typedef Parser *ParsePtr;  /* Pointer to parser structure */
 #define DB_DUMP_VARS    8
 #define DB_ECHO_LINE   16
 #define DB_TRACE_FILES 32
+#define DB_PARSE_EXPR  64
 
 /* Enumeration of the tokens */
 enum TokTypes
@@ -183,7 +234,8 @@ enum TokTypes
   T_MaybeUncomputable,
   T_Ordinal,
   T_In,
-  T_LastBack
+  T_LastBack,
+  T_Expr
 };
 
 /* The structure of a token */
@@ -243,3 +295,26 @@ typedef struct {
 #define TERMINAL_BACKGROUND_UNKNOWN -1
 #define TERMINAL_BACKGROUND_DARK    0
 #define TERMINAL_BACKGROUND_LIGHT   1
+
+typedef int (*SysVarFunc)(int, Value *);
+/* The structure of a system variable */
+typedef struct {
+    char const *name;
+    char modifiable;
+    int type;
+    void *value;
+    int min; /* Or const-value */
+    int max;
+} SysVar;
+
+/* Define the data structure used to hold a user-defined function */
+typedef struct udf_struct {
+    struct udf_struct *next;
+    char name[VAR_NAME_LEN+1];
+    expr_node *node;
+    char **args;
+    int nargs;
+    char const *filename;
+    int lineno;
+} UserFunc;
+

src/userfns.c

@@ -6,7 +6,7 @@
 /*  functions.                                                 */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -16,43 +16,46 @@
 #include <stdio.h>
 #include <ctype.h>
 
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+#include <string.h>
+
 #include <stdlib.h>
 #include "types.h"
 #include "globals.h"
 #include "protos.h"
 #include "err.h"
-#include "expr.h"
 
 #define FUNC_HASH_SIZE 32   /* Size of User-defined function hash table */
 
-/* Define the data structure used to hold a user-defined function */
-typedef struct udf_struct {
-    struct udf_struct *next;
-    char name[VAR_NAME_LEN+1];
-    char const *text;
-    Var *locals;
-    char IsActive;
-    int nargs;
-    char const *filename;
-    int lineno;
-} UserFunc;
-
 /* The hash table */
 static UserFunc *FuncHash[FUNC_HASH_SIZE];
 
-/* Access to built-in functions */
-extern int NumFuncs;
-extern BuiltinFunc Func[];
-
-/* We need access to the expression evaluation stack */
-extern Value ValStack[];
-extern int ValStackPtr;
-
 static void DestroyUserFunc (UserFunc *f);
 static void FUnset (char const *name);
 static void FSet (UserFunc *f);
-static int SetUpLocalVars (UserFunc *f);
-static void DestroyLocalVals (UserFunc *f);
+
+/***************************************************************/
+/*                                                             */
+/*  HashVal                                                    */
+/*  Given a string, compute the hash value.                    */
+/*                                                             */
+/***************************************************************/
+unsigned int HashVal_nocase(char const *str)
+{
+    register unsigned int i=0;
+    register unsigned int j=1;
+    register unsigned int len=0;
+
+    while(*str && len < VAR_NAME_LEN) {
+	i += j * (*str);
+	str++;
+	len++;
+	j = 3-j;
+    }
+    return i;
+}
 
 /***************************************************************/
 /*                                                             */
@@ -75,6 +78,7 @@ int DoFunset(ParsePtr p)
             break;
         }
         seen_one = 1;
+        strtolower(DBufValue(&buf));
         FUnset(DBufValue(&buf));
         DBufFree(&buf);
     }
@@ -93,8 +97,11 @@ int DoFset(ParsePtr p)
 {
     int r;
     int c;
+    int i;
     UserFunc *func;
-    Var *v;
+    UserFunc *existing;
+    Var *locals = NULL;
+    Var local_array[MAX_FUNC_ARGS];
     int orig_namelen;
 
     DynamicBuffer buf;
@@ -119,6 +126,21 @@ int DoFset(ParsePtr p)
 	return E_PARSE_ERR;
     }
 
+    /* Convert to lower-case */
+    strtolower(DBufValue(&buf));
+
+    /* If the function exists and was defined at the same line of the same
+       file, do nothing */
+    existing = FindUserFunc(DBufValue(&buf));
+    if (existing) {
+        if (!strcmp(existing->filename, FileName) &&
+            strcmp(existing->filename, "[cmdline]") &&
+            existing->lineno == LineNo) {
+            DBufFree(&buf);
+            /* We already have it!  Our work here is done. */
+            return OK;
+        }
+    }
     func = NEW(UserFunc);
     if (!func) {
 	DBufFree(&buf);
@@ -137,25 +159,22 @@ int DoFset(ParsePtr p)
     StrnCpy(func->name, DBufValue(&buf), VAR_NAME_LEN);
     DBufFree(&buf);
     if (!Hush) {
-	if (FindFunc(func->name, Func, NumFuncs)) {
+	if (FindBuiltinFunc(func->name)) {
 	    Eprint("%s: `%s'", ErrMsg[E_REDEF_FUNC], func->name);
 	}
     }
-    func->locals = NULL;
-    func->text = NULL;
-    func->IsActive = 0;
+    func->node = NULL;
     func->nargs = 0;
+    func->args = NULL;
 
-    /* Get the local variables - we insert the local variables in REVERSE
-       order, but that's OK, because we pop them off the stack in reverse
-       order, too, so everything works out just fine. */
+    /* Get the local variables */
 
     c=ParseNonSpaceChar(p, &r, 1);
     if (r) return r;
     if (c == ')') {
 	(void) ParseNonSpaceChar(p, &r, 0);
-    }
-    else {
+    } else {
+        locals = local_array;
 	while(1) {
 	    if ( (r=ParseIdentifier(p, &buf)) ) return r;
 	    if (*DBufValue(&buf) == '$') {
@@ -163,18 +182,25 @@ int DoFset(ParsePtr p)
 		DestroyUserFunc(func);
 		return E_BAD_ID;
 	    }
-	    v = NEW(Var);
-	    if (!v) {
-		DBufFree(&buf);
-		DestroyUserFunc(func);
-		return E_NO_MEM;
-	    }
+            /* If we've already seen this local variable, error */
+            for (i=0; i<func->nargs; i++) {
+                if (!StrinCmp(DBufValue(&buf), local_array[i].name, VAR_NAME_LEN)) {
+                    DBufFree(&buf);
+                    DestroyUserFunc(func);
+                    return E_REPEATED_ARG;
+                }
+            }
+            i = func->nargs;
+            if (i >= MAX_FUNC_ARGS-1) {
+                DBufFree(&buf);
+                DestroyUserFunc(func);
+                return E_2MANY_ARGS;
+            }
+            local_array[i].v.type = ERR_TYPE;
+            StrnCpy(local_array[i].name, DBufValue(&buf), VAR_NAME_LEN);
+            local_array[i].next = &(local_array[i+1]);
+            local_array[i+1].next = NULL;
 	    func->nargs++;
-	    v->v.type = ERR_TYPE;
-	    StrnCpy(v->name, DBufValue(&buf), VAR_NAME_LEN);
-	    DBufFree(&buf);
-	    v->next = func->locals;
-	    func->locals = v;
 	    c = ParseNonSpaceChar(p, &r, 0);
 	    if (c == ')') break;
 	    else if (c != ',') {
@@ -189,17 +215,42 @@ int DoFset(ParsePtr p)
     if (c == '=') {
 	(void) ParseNonSpaceChar(p, &r, 0);
     }
-    /* Copy the text over */
     if (p->isnested) {
 	Eprint("%s", ErrMsg[E_CANTNEST_FDEF]);
 	DestroyUserFunc(func);
 	return E_PARSE_ERR;
     }
 
-    func->text = StrDup(p->pos);
-    if (!func->text) {
-	DestroyUserFunc(func);
-	return E_NO_MEM;
+    while(*(p->pos) && isspace(*(p->pos))) {
+        p->pos++;
+    }
+    if (!*(p->pos)) {
+        DestroyUserFunc(func);
+        return E_EOLN;
+    }
+    /* Parse the expression */
+    func->node = parse_expression(&(p->pos), &r, locals);
+    if (!func->node) {
+        DestroyUserFunc(func);
+        return r;
+    }
+
+    c = ParseNonSpaceChar(p, &r, 1);
+    if (c != 0) {
+        DestroyUserFunc(func);
+        return E_EXPECTING_EOL;
+    }
+
+    /* Save the argument names */
+    if (func->nargs) {
+        func->args = calloc(sizeof(char *), func->nargs);
+        for (i=0; i<func->nargs; i++) {
+            func->args[i] = StrDup(local_array[i].name);
+            if (!func->args[i]) {
+                DestroyUserFunc(func);
+                return E_NO_MEM;
+            }
+        }
     }
 
     /* If an old definition of this function exists, destroy it */
@@ -223,23 +274,22 @@ int DoFset(ParsePtr p)
 /***************************************************************/
 static void DestroyUserFunc(UserFunc *f)
 {
-    Var *v, *prev;
-
-    /* Free the local variables first */
-    v = f->locals;
-    while(v) {
-	DestroyValue(v->v);
-	prev = v;
-	v = v->next;
-	free(prev);
-    }
+    int i;
 
     /* Free the function definition */
-    if (f->text) free( (char *) f->text);
+    if (f->node) free_expr_tree(f->node);
 
     /* Free the filename */
     if (f->filename) free( (char *) f->filename);
 
+    /* Free arg names */
+    if (f->args) {
+        for (i=0; i<f->nargs; i++) {
+            if (f->args[i]) free(f->args[i]);
+        }
+        free(f->args);
+    }
+
     /* Free the data structure itself */
     free(f);
 }
@@ -257,12 +307,12 @@ static void FUnset(char const *name)
     UserFunc *cur, *prev;
     int h;
 
-    h = HashVal(name) % FUNC_HASH_SIZE;
+    h = HashVal_nocase(name) % FUNC_HASH_SIZE;
 
     cur = FuncHash[h];
     prev = NULL;
     while(cur) {
-	if (! StrinCmp(name, cur->name, VAR_NAME_LEN)) break;
+	if (! strncmp(name, cur->name, VAR_NAME_LEN)) break;
 	prev = cur;
 	cur = cur->next;
     }
@@ -280,132 +330,22 @@ static void FUnset(char const *name)
 /***************************************************************/
 static void FSet(UserFunc *f)
 {
-    int h = HashVal(f->name) % FUNC_HASH_SIZE;
+    int h = HashVal_nocase(f->name) % FUNC_HASH_SIZE;
     f->next = FuncHash[h];
     FuncHash[h] = f;
 }
 
-/***************************************************************/
-/*                                                             */
-/*  CallUserFunc                                               */
-/*                                                             */
-/*  Call a user-defined function.                              */
-/*                                                             */
-/***************************************************************/
-int CallUserFunc(char const *name, int nargs, ParsePtr p)
+UserFunc *FindUserFunc(char const *name)
 {
-    UserFunc *f;
-    int h = HashVal(name) % FUNC_HASH_SIZE;
-    int i;
-    char const *s;
+   UserFunc *f;
+   int h = HashVal_nocase(name) % FUNC_HASH_SIZE;
 
-    /* Search for the function */
-    f = FuncHash[h];
-    while (f && StrinCmp(name, f->name, VAR_NAME_LEN)) f = f->next;
-    if (!f) {
-	Eprint("%s: `%s'", ErrMsg[E_UNDEF_FUNC], name);
-	return E_UNDEF_FUNC;
-    }
-    /* Debugging stuff */
-    if (DebugFlag & DB_PRTEXPR) {
-	fprintf(ErrFp, "%s %s(", ErrMsg[E_ENTER_FUN], f->name);
-	for (i=0; i<nargs; i++) {
-	    PrintValue(&ValStack[ValStackPtr - nargs + i], ErrFp);
-	    if (i<nargs-1) fprintf(ErrFp, ", ");
-	}
-	fprintf(ErrFp, ")\n");
-    }
-    /* Detect illegal recursive call */
-    if (f->IsActive) {
-	if (DebugFlag &DB_PRTEXPR) {
-	    fprintf(ErrFp, "%s %s() => ", ErrMsg[E_LEAVE_FUN], name);
-	    fprintf(ErrFp, "%s\n", ErrMsg[E_RECURSIVE]);
-	}
-	return E_RECURSIVE;
-    }
-
-    /* Check number of args */
-    if (nargs != f->nargs) {
-	if (DebugFlag &DB_PRTEXPR) {
-	    fprintf(ErrFp, "%s %s() => ", ErrMsg[E_LEAVE_FUN], name);
-	    fprintf(ErrFp, "%s\n",
-		    ErrMsg[(nargs < f->nargs) ? E_2FEW_ARGS : E_2MANY_ARGS]);
-	}
-	return (nargs < f->nargs) ? E_2FEW_ARGS : E_2MANY_ARGS;
-    }
-    /* Found the function - set up a local variable frame */
-    h = SetUpLocalVars(f);
-    if (h) {
-	if (DebugFlag &DB_PRTEXPR) {
-	    fprintf(ErrFp, "%s %s() => ", ErrMsg[E_LEAVE_FUN], name);
-	    fprintf(ErrFp, "%s\n", ErrMsg[h]);
-	}
-	return h;
-    }
-
-    /* Evaluate the expression */
-    f->IsActive = 1;
-    s = f->text;
-
-    /* Skip the opening bracket, if there's one */
-    while (isempty(*s)) s++;
-    if (*s == BEG_OF_EXPR) s++;
-    push_call(f->filename, f->name, f->lineno);
-    h = Evaluate(&s, f->locals, p);
-    if (h == OK) {
-        pop_call();
-    }
-    f->IsActive = 0;
-    DestroyLocalVals(f);
-    if (DebugFlag &DB_PRTEXPR) {
-	fprintf(ErrFp, "%s %s() => ", ErrMsg[E_LEAVE_FUN], name);
-	if (h) fprintf(ErrFp, "%s\n", ErrMsg[h]);
-	else {
-	    PrintValue(&ValStack[ValStackPtr-1], ErrFp);
-	    fprintf(ErrFp, "\n");
-	}
-    }
-    return h;
+   /* Search for the function */
+   f = FuncHash[h];
+   while (f && strncmp(name, f->name, VAR_NAME_LEN)) f = f->next;
+   return f;
 }
 
-/***************************************************************/
-/*                                                             */
-/*  SetUpLocalVars                                             */
-/*                                                             */
-/*  Set up the local variables from the stack frame.           */
-/*                                                             */
-/***************************************************************/
-static int SetUpLocalVars(UserFunc *f)
-{
-    int i, r;
-    Var *var;
-
-    for (i=0, var=f->locals; var && i<f->nargs; var=var->next, i++) {
-	if ( (r=FnPopValStack(&(var->v))) ) {
-	    DestroyLocalVals(f);
-	    return r;
-	}
-    }
-    return OK;
-}
-
-/***************************************************************/
-/*                                                             */
-/*  DestroyLocalVals                                           */
-/*                                                             */
-/*  Destroy the values of all local variables after evaluating */
-/*  the function.                                              */
-/*                                                             */
-/***************************************************************/
-static void DestroyLocalVals(UserFunc *f)
-{
-    Var *v = f->locals;
-
-    while(v) {
-	DestroyValue(v->v);
-	v = v->next;
-    }
-}
 /***************************************************************/
 /*                                                             */
 /*  UserFuncExists                                             */
@@ -416,12 +356,33 @@ static void DestroyLocalVals(UserFunc *f)
 /***************************************************************/
 int UserFuncExists(char const *fn)
 {
-    UserFunc *f;
-    int h = HashVal(fn) % FUNC_HASH_SIZE;
+    UserFunc *f = FindUserFunc(fn);
 
-    f = FuncHash[h];
-    while (f && StrinCmp(fn, f->name, VAR_NAME_LEN)) f = f->next;
     if (!f) return -1;
     else return f->nargs;
 }
 
+/***************************************************************/
+/*                                                             */
+/*  UnsetAllUserFuncs                                          */
+/*                                                             */
+/*  Call FUNSET on all user funcs.  Used with -ds flag to      */
+/*  ensure no expr_node memory leaks.                          */
+/*                                                             */
+/***************************************************************/
+void
+UnsetAllUserFuncs(void)
+{
+    UserFunc *f;
+    UserFunc *next;
+    int i;
+    for (i=0; i<FUNC_HASH_SIZE; i++) {
+        f = FuncHash[i];
+        while(f) {
+            next = f->next;
+            DestroyUserFunc(f);
+            f = next;
+        }
+        FuncHash[i] = NULL;
+    }
+}

src/utils.c

@@ -5,7 +5,7 @@
 /*  Useful utility functions.                                  */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -17,6 +17,11 @@ static char const DontEscapeMe[] =
 #include "err.h"
 
 #include <string.h>
+
+#ifdef HAVE_STRINGS_H
+#include <strings.h>
+#endif
+
 #include <stdio.h>
 #include <ctype.h>
 
@@ -36,11 +41,17 @@ char *StrnCpy(char *dest, char const *source, int n)
 {
     char *odest = dest;
 
+    if (n <= 0) {
+        *dest = 0;
+        return dest;
+    }
+
     while (n-- && (*dest++ = *source++)) ;
     if (*(dest-1)) *dest = 0;
     return odest;
 }
 
+#ifndef HAVE_STRNCASECMP
 /***************************************************************/
 /*                                                             */
 /*  StrinCmp - compare strings, case-insensitive               */
@@ -59,6 +70,9 @@ int StrinCmp(char const *s1, char const *s2, int n)
     if (n) return (toupper(*s1) - toupper(*s2)); else return 0;
 }
 
+#endif
+
+#ifndef HAVE_STRDUP
 /***************************************************************/
 /*                                                             */
 /*  StrDup                                                     */
@@ -74,6 +88,9 @@ char *StrDup(char const *s)
     return ret;
 }
 
+#endif
+
+#ifndef HAVE_STRCASECMP
 /***************************************************************/
 /*                                                             */
 /*  StrCmpi                                                    */
@@ -93,6 +110,8 @@ int StrCmpi(char const *s1, char const *s2)
     return toupper(*s1) - toupper(*s2);
 }
 
+#endif
+
 /***************************************************************/
 /*                                                             */
 /*  DateOK                                                     */
@@ -108,7 +127,15 @@ int DateOK(int y, int m, int d)
 	m > 11                ||
 	y > BASE + YR_RANGE   ||
 	d > DaysInMonth(m, y) ) return 0;
-    else return 1;
+    return 1;
+}
+
+void strtolower(char *s)
+{
+    while (*s) {
+        *s = tolower(*s);
+        s++;
+    }
 }
 
 /* Functions designed to defeat gcc optimizer */
@@ -146,11 +173,15 @@ int _private_sub_overflow(int a, int b)
 int
 ShellEscape(char const *in, DynamicBuffer *out)
 {
-    while(*in) {
-        if (!strchr(DontEscapeMe, *in)) {
-            if (DBufPutc(out, '\\') != OK) return E_NO_MEM;
+    unsigned char const *i = (unsigned char const *) in;
+    while(*i) {
+        /* Don't escape chars with high bit set.  That will mangle UTF-8 */
+        if (! (*i & 0x80) ) {
+            if (!strchr(DontEscapeMe, *i)) {
+                if (DBufPutc(out, '\\') != OK) return E_NO_MEM;
+            }
         }
-        if (DBufPutc(out, *in++) != OK) return E_NO_MEM;
+        if (DBufPutc(out, *i++) != OK) return E_NO_MEM;
     }
     return OK;
 }
@@ -164,31 +195,33 @@ typedef struct cs_s {
 } cs;
 
 static cs *callstack = NULL;
+static cs *freecs = NULL;
 
 static void
 destroy_cs(cs *entry)
 {
-    if (entry->filename) free( (void *) entry->filename);
-    if (entry->func) free( (void *) entry->func);
-    free( (void *) entry);
+    entry->next = freecs;
+    freecs = entry;
 }
 
 
 int
 push_call(char const *filename, char const *func, int lineno)
 {
-    cs *entry = NEW(cs);
-    if (!entry) {
-        return E_NO_MEM;
+    cs *entry;
+    if (freecs) {
+        entry = freecs;
+        freecs = freecs->next;
+    } else {
+        entry = NEW(cs);
+        if (!entry) {
+            return E_NO_MEM;
+        }
     }
     entry->next = NULL;
-    entry->filename = StrDup(filename);
-    entry->func = StrDup(func);
+    entry->filename = filename;
+    entry->func = func;
     entry->lineno = lineno;
-    if (!entry->filename || !entry->func) {
-        destroy_cs(entry);
-        return E_NO_MEM;
-    }
     entry->next = callstack;
     callstack = entry;
     return OK;
@@ -210,11 +243,35 @@ clear_callstack(void)
 static void
 print_callstack_aux(FILE *fp, cs *entry)
 {
-    if (entry) {
-        print_callstack_aux(fp, entry->next);
-        fprintf(fp, "\n");
-        (void) fprintf(fp, "%s(%d): In function `%s'", entry->filename, entry->lineno, entry->func);
+    int i = 0;
+    char const *in = "In";
+    cs *prev = NULL;
+    while(entry) {
+        if (prev) {
+            in = "Called from";
+        }
+        if (!prev || strcmp(prev->func, entry->func) || strcmp(prev->filename, entry->filename) || prev->lineno != entry->lineno) {
+            if (prev) {
+                fprintf(fp, "\n");
+            }
+            (void) fprintf(fp, "    %s(%d): [#%d] %s function `%s'", entry->filename, entry->lineno, i, in, entry->func);
+        }
+        prev = entry;
+        entry = entry->next;
+        i++;
+        if (i > 10) {
+            break;
+        }
     }
+    if (entry) {
+        (void) fprintf(fp, "\n    [remaining call frames omitted]");
+    }
+}
+
+int
+have_callstack(void)
+{
+    return (callstack != NULL);
 }
 
 int

src/var.c

@@ -6,7 +6,7 @@
 /*  user- and system-defined variables.                        */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2023 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2024 by Dianne Skoll                    */
 /*  SPDX-License-Identifier: GPL-2.0-only                      */
 /*                                                             */
 /***************************************************************/
@@ -22,7 +22,6 @@
 #include <errno.h>
 #include <locale.h>
 #include "types.h"
-#include "expr.h"
 #include "globals.h"
 #include "protos.h"
 #include "err.h"
@@ -39,8 +38,6 @@ static int IntMax = INT_MAX;
 
 static Var *VHashTbl[VAR_HASH_SIZE];
 
-typedef int (*SysVarFunc)(int, Value *);
-
 static double
 strtod_in_c_locale(char const *str, char **endptr)
 {
@@ -167,6 +164,26 @@ static int latitude_func(int do_set, Value *val)
     return latitude_longitude_func(do_set, val, &Latitude, -90.0, 90.0);
 }
 
+static int terminal_bg_func(int do_set, Value *val)
+{
+    UNUSED(do_set);
+    val->type = INT_TYPE;
+    val->v.val = GetTerminalBackground();
+    return OK;
+}
+
+static int trig_time_func(int do_set, Value *val)
+{
+    UNUSED(do_set);
+    if (LastTriggerTime != NO_TIME) {
+        val->type = TIME_TYPE;
+        val->v.val = LastTriggerTime;
+    } else {
+        val->type = INT_TYPE;
+        val->v.val = 0;
+    }
+    return OK;
+}
 
 static int trig_date_func(int do_set, Value *val)
 {
@@ -302,6 +319,29 @@ static int datetime_sep_func(int do_set, Value *val)
     return OK;
 }
 
+static int expr_time_limit_func(int do_set, Value *val)
+{
+    if (!do_set) {
+        val->type = INT_TYPE;
+        val->v.val = ExpressionEvaluationTimeLimit;
+        return OK;
+    }
+    if (val->type != INT_TYPE) return E_BAD_TYPE;
+    if (val->v.val < 0) return E_2LOW;
+
+    if (!TopLevel()) {
+        /* Ignore attempts to set from non-toplevel unless it's
+           lower than current value */
+        if (val->v.val == 0 ||
+            val->v.val >= ExpressionEvaluationTimeLimit) {
+            return OK;
+        }
+    }
+
+    ExpressionEvaluationTimeLimit = val->v.val;
+    return OK;
+}
+
 static int default_color_func(int do_set, Value *val)
 {
     int col_r, col_g, col_b;
@@ -470,10 +510,10 @@ int DeleteVar(char const *str)
 /*                                                             */
 /*  SetVar                                                     */
 /*                                                             */
-/*  Set the indicate variable to the specified value.          */
+/*  Set the indicated variable to the specified value.         */
 /*                                                             */
 /***************************************************************/
-int SetVar(char const *str, Value *val)
+int SetVar(char const *str, Value const *val)
 {
     Var *v = FindVar(str, 1);
 
@@ -491,20 +531,10 @@ int SetVar(char const *str, Value *val)
 /*  Get a copy of the value of the variable.                   */
 /*                                                             */
 /***************************************************************/
-int GetVarValue(char const *str, Value *val, Var *locals, ParsePtr p)
+int GetVarValue(char const *str, Value *val)
 {
     Var *v;
 
-    /* Try searching local variables first */
-    v = locals;
-    while (v) {
-	if (! StrinCmp(str, v->name, VAR_NAME_LEN))
-	    return CopyValue(val, &v->v);
-	v = v->next;
-    }
-
-    /* Global variable... mark expression as non-constant */
-    if (p) p->nonconst_expr = 1;
     v=FindVar(str, 0);
 
     if (!v) {
@@ -525,7 +555,9 @@ int DoSet (Parser *p)
     int r;
 
     DynamicBuffer buf;
+    DynamicBuffer buf2;
     DBufInit(&buf);
+    DBufInit(&buf2);
 
     r = ParseIdentifier(p, &buf);
     if (r) return r;
@@ -535,12 +567,24 @@ int DoSet (Parser *p)
 	ParseNonSpaceChar(p, &r, 0);
     }
 
+    if (p->isnested) {
+        Eprint("%s", "Do not use [] around expression in SET command");
+        return E_CANTNEST_FDEF;
+    }
+
     r = EvaluateExpr(p, &v);
     if (r) {
 	DBufFree(&buf);
 	return r;
     }
 
+    r = ParseToken(p, &buf2);
+    if (r) return r;
+    if (DBufLen(&buf2)) {
+        DBufFree(&buf2);
+        return E_EXPECTING_EOL;
+    }
+    DBufFree(&buf2);
     if (*DBufValue(&buf) == '$') r = SetSysVar(DBufValue(&buf)+1, &v);
     else r = SetVar(DBufValue(&buf), &v);
     if (buf.len > VAR_NAME_LEN) {
@@ -756,15 +800,9 @@ int DoPreserve (Parser *p)
 /*                                                             */
 /***************************************************************/
 
-/* The structure of a system variable */
-typedef struct {
-    char const *name;
-    char modifiable;
-    int type;
-    void *value;
-    int min;
-    int max;
-} SysVar;
+/* Macro to access "min" but as a constval.  Just to make source more
+   readable */
+#define constval min
 
 /* If the type of a sys variable is STR_TYPE, then min is redefined
    to be a flag indicating whether or not the value has been malloc'd. */
@@ -792,12 +830,13 @@ static SysVar SysVarArr[] = {
     {"DefaultColor",   1,  SPECIAL_TYPE, default_color_func,   0,      0 },
     {"DefaultPrio",    1,  INT_TYPE,     &DefaultPrio,         0,      9999 },
     {"DefaultTDelta",  1,  INT_TYPE,     &DefaultTDelta,       0,      1440 },
-    {"DeltaOffset",    0,  INT_TYPE,     &DeltaOffset,         0,      0 },
+    {"DeltaOverride",  0,  INT_TYPE,     &DeltaOverride,         0,      0 },
     {"DontFork",       0,  INT_TYPE,     &DontFork,            0,      0 },
     {"DontQueue",      0,  INT_TYPE,     &DontQueue,           0,      0 },
     {"DontTrigAts",    0,  INT_TYPE,     &DontIssueAts,        0,      0 },
     {"EndSent",        1,  STR_TYPE,     &EndSent,             0,      0 },
     {"EndSentIg",      1,  STR_TYPE,     &EndSentIg,           0,      0 },
+    {"ExpressionTimeLimit", 1, SPECIAL_TYPE, expr_time_limit_func, 0,  0 },
     {"February",       1,  STR_TYPE,     &DynamicMonthName[1], 0,      0 },
     {"FirstIndent",    1,  INT_TYPE,     &FirstIndent,         0,      132 },
     {"FoldYear",       1,  INT_TYPE,     &FoldYear,            0,      1 },
@@ -825,6 +864,9 @@ static SysVar SysVarArr[] = {
     {"LongMin",        1,  SPECIAL_TYPE, longmin_func,         0,      0 },
     {"LongSec",        1,  SPECIAL_TYPE, longsec_func,         0,      0 },
     {"March",          1,  STR_TYPE,     &DynamicMonthName[2], 0,      0 },
+    {"MaxFullOmits",   0,  CONST_INT_TYPE, NULL,        MAX_FULL_OMITS, 0},
+    {"MaxLateMinutes", 1,  INT_TYPE,     &MaxLateMinutes,      0,      1440 },
+    {"MaxPartialOmits",0,  CONST_INT_TYPE, NULL,    MAX_PARTIAL_OMITS, 0},
     {"MaxSatIter",     1,  INT_TYPE,     &MaxSatIter,          10,     ANY },
     {"MaxStringLen",   1,  INT_TYPE,     &MaxStringLen,        -1,     ANY },
     {"May",            1,  STR_TYPE,     &DynamicMonthName[4], 0,      0 },
@@ -835,10 +877,13 @@ static SysVar SysVarArr[] = {
     {"NextMode",       0,  INT_TYPE,     &NextMode,            0,      0 },
     {"November",       1,  STR_TYPE,     &DynamicMonthName[10],0,      0 },
     {"Now",            1,  STR_TYPE,     &DynamicNow,          0,      0 },
+    {"NumFullOmits",   0,  INT_TYPE,     &NumFullOmits,        0,      0 },
+    {"NumPartialOmits",0,  INT_TYPE,     &NumPartialOmits,     0,      0 },
     {"NumQueued",      0,  INT_TYPE,     &NumQueued,           0,      0 },
     {"NumTrig",        0,  INT_TYPE,     &NumTriggered,        0,      0 },
     {"October",        1,  STR_TYPE,     &DynamicMonthName[9], 0,      0 },
     {"On",             1,  STR_TYPE,     &DynamicOn,           0,      0 },
+    {"ParseUntriggered", 1, INT_TYPE,    &ParseUntriggered,    0,      1 },
     {"Pm",             1,  STR_TYPE,     &DynamicPm,           0,      0 },
     {"PrefixLineNo",   0,  INT_TYPE,     &DoPrefixLineNo,      0,      0 },
     {"PSCal",          0,  INT_TYPE,     &PsCal,               0,      0 },
@@ -855,12 +900,13 @@ static SysVar SysVarArr[] = {
     {"SysInclude",     0,  STR_TYPE,     &SysDir,              0,      0 },
     {"T",              0,  SPECIAL_TYPE, trig_date_func,       0,      0 },
     {"Td",             0,  SPECIAL_TYPE, trig_day_func,        0,      0 },
-    {"TerminalBackground", 0, INT_TYPE,  &TerminalBackground,  0,      0 },
+    {"TerminalBackground", 0, SPECIAL_TYPE,  terminal_bg_func, 0,      0 },
     {"Thursday",       1,  STR_TYPE,     &DynamicDayName[3],   0,      0 },
     {"TimeSep",        1,  SPECIAL_TYPE, time_sep_func,        0,      0 },
     {"Tm",             0,  SPECIAL_TYPE, trig_mon_func,        0,      0 },
     {"Today",          1,  STR_TYPE,     &DynamicToday,        0,      0 },
     {"Tomorrow",       1,  STR_TYPE,     &DynamicTomorrow,     0,      0 },
+    {"Tt",             0,  SPECIAL_TYPE, trig_time_func,       0,      0 },
     {"Tuesday",        1,  STR_TYPE,     &DynamicDayName[1],   0,      0 },
     {"Tw",             0,  SPECIAL_TYPE, trig_wday_func,       0,      0 },
     {"Ty",             0,  SPECIAL_TYPE, trig_year_func,       0,      0 },
@@ -879,7 +925,6 @@ static SysVar SysVarArr[] = {
 };
 
 #define NUMSYSVARS ( sizeof(SysVarArr) / sizeof(SysVar) )
-static SysVar *FindSysVar (char const *name);
 static void DumpSysVar (char const *name, const SysVar *v);
 /***************************************************************/
 /*                                                             */
@@ -893,13 +938,13 @@ int SetSysVar(char const *name, Value *value)
     int r;
     SysVar *v = FindSysVar(name);
     if (!v) return E_NOSUCH_VAR;
-    if (v->type != SPECIAL_TYPE &&
-	v->type != value->type) return E_BAD_TYPE;
     if (!v->modifiable) {
 	Eprint("%s: `$%s'", ErrMsg[E_CANT_MODIFY], name);
 	return E_CANT_MODIFY;
     }
 
+    if (v->type != SPECIAL_TYPE &&
+	v->type != value->type) return E_BAD_TYPE;
     if (v->type == SPECIAL_TYPE) {
 	SysVarFunc f = (SysVarFunc) v->value;
 	r = f(1, value);
@@ -940,6 +985,11 @@ int GetSysVar(char const *name, Value *val)
 
     val->type = ERR_TYPE;
     if (!v) return E_NOSUCH_VAR;
+    if (v->type == CONST_INT_TYPE) {
+        val->v.val = v->constval;
+        val->type = INT_TYPE;
+        return OK;
+    }
     if (v->type == SPECIAL_TYPE) {
 	SysVarFunc f = (SysVarFunc) v->value;
 	return f(0, val);
@@ -971,7 +1021,7 @@ int GetSysVar(char const *name, Value *val)
 /* Find a system var with specified name.                      */
 /*                                                             */
 /***************************************************************/
-static SysVar *FindSysVar(char const *name)
+SysVar *FindSysVar(char const *name)
 {
     int top=NUMSYSVARS-1, bottom=0;
     int mid=(top + bottom) / 2;
@@ -1033,7 +1083,9 @@ static void DumpSysVar(char const *name, const SysVar *v)
     if (name) strcat(buffer, name); else strcat(buffer, v->name);
     fprintf(ErrFp, "%16s  ", buffer);
     if (v) {
-	if (v->type == SPECIAL_TYPE) {
+        if (v->type == CONST_INT_TYPE) {
+            fprintf(ErrFp, "%d\n", v->constval);
+        } else if (v->type == SPECIAL_TYPE) {
 	    SysVarFunc f = (SysVarFunc) v->value;
 	    f(0, &vtmp);
 	    PrintValue(&vtmp, ErrFp);

tests/ansicolors.rem

@@ -4,7 +4,7 @@ MSG UseVTColors is:         [$UseVTColors]%
 MSG Use256Colors is:        [$Use256Colors]%
 MSG UseTrueColors is:       [$UseTrueColors]%
 MSG UseBGVTColors is:       [$UseBGVTColors]%
-set n ansicolor("")]
+set n ansicolor("")
 MSG This is [ansicolor(0,255,0)]green[n], [ansicolor("255 0 0")]red[n] and [ansicolor("0 0 255")]blue[n] text.%
 MSG This is [ansicolor(0,0,0)][ansicolor(0,255,0,1)]black text on a green background[n]%
 MSG This is [ansicolor(0,0,0,0,1)]clamped black text[n]%
@@ -35,8 +35,8 @@ set a ansicolor(-1, 0, 0)
 set a ansicolor(42, 42, 256)
 set a ansicolor("foo")
 set a ansicolor("1 1")
-set a ansicolor("-1 -1 0");
-set a ansicolor("256 1 1");
+set a ansicolor("-1 -1 0")
+set a ansicolor("256 1 1")
 set a ansicolor(128, 128, 128, 2)
 set a ansicolor(128, 128, 128, -1)
 set a ansicolor(128, 128, 128, 0, 2)

tests/expr.rem

@@ -0,0 +1,51 @@
+debug +sx
+
+set a 1
+
+set a 0&&0
+set a 0&&1
+set a 1&&0
+set a 1&&1
+
+set a 0||0
+set a 0||1
+set a 1||0
+set a 1||1
+
+set a 2, 3
+
+set a iif(0, "foo", 0, "bar", 1, "blech", 0, "quux", 1, "borhy", "wacka")
+
+set a max(2*3, 4+5, min(6*7+8, 7+6*8))
+
+set a max(1,,1)
+
+set a 5%0
+
+set a 5/0
+
+set a -$IntMin
+
+set a $IntMin / -1
+set a $IntMin % -1
+
+set a (7+5)*(8+2)/(9-4)
+
+set a "foo" * 5
+set a "foo" / 5
+set a "foo" * "five"
+set a "foo" + "bar"
+set a '2024-01-02' + 3
+set a 3 + '2024-01-02'
+set a 11:33 + 75
+set a 75 + 11:33
+set a '2024-01-01@11:33' + 1500
+set a 1500 + '2024-01-01@11:33'
+
+set a '2024-03-02' - '2024-01-01'
+set a 15:00 - 14:44
+
+
+set a (1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+1))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))
+
+set a (1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+(1+1)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))

tests/queue1.rem

@@ -0,0 +1,6 @@
+FSET msgprefix(x) "Priority: " + x + "; Filename: " + filename() + ":  "
+
+REM at 23:56 MSG foo
+REM PRIORITY 42 at 23:57 MSG bar
+REM PRIORITY 999 at 23:58 MSQ quux
+DO queue2.rem

tests/queue2.rem

@@ -0,0 +1 @@
+REM at 23:59 PRIORITY 2 MSG XXXX

tests/test-rem

@@ -7,7 +7,7 @@
 # in the build directory.
 #
 # This file is part of REMIND.
-# Copyright (C) 1992-2023 Dianne Skoll
+# Copyright (C) 1992-2024 Dianne Skoll
 # SPDX-License-Identifier: GPL-2.0-only
 # ---------------------------------------------------------------------------
 
@@ -31,6 +31,15 @@ fi
 TZ=UTC
 export TZ
 
+RESULT=`(echo 'BANNER %'; echo 'IF now() > 23:55'; echo 'MSG late%'; echo 'ENDIF') | ../src/remind -h -`
+
+if test "$RESULT" = "late" ; then
+    echo ""
+    echo "*** Please do not run the test suite between 23:55 and 00:00 UTC; it will fail."
+    echo ""
+    exit 1
+fi
+
 # If we're already in a utf-8 locale, do
 # nothing; otherwise, set LC_ALL
 OK=0
@@ -167,7 +176,7 @@ REM 1 Jan 2012 AT 10:00 MSG 10am: Should show up
 MSG [$DontTrigAts]
 EOF
 
-# An OMITFUNC should indicate nonconst_expr
+# OMITFUNC should indicate nonconst_expr
 ../src/remind -pp - 1 jan 2012 9:00 <<'EOF' >> ../tests/test.out 2>&1
 REM Mon OMITFUNC foo MSG bar
 EOF
@@ -408,6 +417,18 @@ TZ=Europe/Berlin ../src/remind -dxe ../tests/tz.rem >> ../tests/test.out 2>&1
 # Test that banner is printed on every iteration
 echo "MSG Should be three banners." | ../src/remind - 2022-10-20 '*3' >> ../tests/test.out 2>&1
 
+# Test the -tn option
+echo "REM May 23 +10 MSG Orange %b" | ../src/remind - 2023-05-21 >> ../tests/test.out 2>&1
+echo "REM May 23 +10 MSG Quux %b" | ../src/remind -t1 - 2023-05-21 >> ../tests/test.out 2>&1
+echo "REM May 23 +10 MSG Cabbage %b" | ../src/remind -t2 - 2023-05-21 >> ../tests/test.out 2>&1
+echo "REM May 23 MSG Banana %b" | ../src/remind - 2023-05-21 >> ../tests/test.out 2>&1
+echo "REM May 23 MSG Carrot %b" | ../src/remind -t1 - 2023-05-21 >> ../tests/test.out 2>&1
+echo "REM May 23 MSG Apple %b" | ../src/remind -t2 - 2023-05-21 >> ../tests/test.out 2>&1
+
+# Test the -tz option
+echo "REM May 22 +10 MSG Foo %b" | ../src/remind - 2023-05-21 >> ../tests/test.out 2>&1
+echo "REM May 22 +10 MSG Bar %b" | ../src/remind -tz - 2023-05-21 >> ../tests/test.out 2>&1
+
 # World-writable file
 rm -rf include_dir/ww
 touch include_dir/ww
@@ -425,6 +446,111 @@ rm -rf include_dir/ww
 # This segfaulted in 04.02.03
 ../src/remind -h '-imsgprefix(x)="foo"' /dev/null >> ../tests/test.out 2>&1
 
+# Test --version long option
+../src/remind --version >> ../tests/test.out 2>&1
+
+# Test queueing.  Because eventstart depends on the actual system
+# date, we have to convert it to some constant (in this case,
+# VOLATILE) so that tests are not dependent on the system date.
+echo JSONQUEUE | ../src/remind -z0 ../tests/queue1.rem 2>&1 | sed -e 's/"eventstart":"................"/"eventstart":"VOLATILE"/g' | sed -e 's/"qid":"[0-9a-f]*",//g' >> ../tests/test.out 2>&1
+echo QUEUE | ../src/remind -zj ../tests/queue1.rem 2>&1 | sed -e 's/"eventstart":"................"/"eventstart":"VOLATILE"/g' | sed -e 's/"qid":"[0-9a-f]*",//g' >> ../tests/test.out 2>&1
+
+# Test for leap year bug that was fixed
+../src/remind -dte - 28 Feb 2024 <<'EOF' >> ../tests/test.out 2>&1
+BANNER %
+REM 29 MSG One
+REM 29 Feb MSG two
+REM 29 2024 MSG three
+REM 29 Feb 2024 MSG four
+REM Thursday 29 MSG One
+REM Thursday 29 Feb MSG two
+REM Thursday 29 2024 MSG three
+REM Thursday 29 Feb 2024 MSG four
+REM Wednesday 29 MSG One
+REM Wednesday 29 Feb MSG two
+REM Wednesday 29 2024 MSG three
+REM Wednesday 29 Feb 2024 MSG four
+REM Friday 29 MSG One
+REM Friday 29 Feb MSG two
+REM Friday 29 2024 MSG three
+REM Friday 29 Feb 2024 MSG four
+EOF
+
+../src/remind -dte - 1 Mar 2024 <<'EOF' >> ../tests/test.out 2>&1
+BANNER %
+REM 29 MSG One
+REM 29 Feb MSG two
+REM 29 2024 MSG three
+REM 29 Feb 2024 MSG four
+REM Thursday 29 MSG One
+REM Thursday 29 Feb MSG two
+REM Thursday 29 2024 MSG three
+REM Thursday 29 Feb 2024 MSG four
+REM Wednesday 29 MSG One
+REM Wednesday 29 Feb MSG two
+REM Wednesday 29 2024 MSG three
+REM Wednesday 29 Feb 2024 MSG four
+REM Friday 29 MSG One
+REM Friday 29 Feb MSG two
+REM Friday 29 2024 MSG three
+REM Friday 29 Feb 2024 MSG four
+EOF
+
+../src/remind -dte - 28 Feb 2025 <<'EOF' >> ../tests/test.out 2>&1
+BANNER %
+REM 29 MSG One
+REM 29 Feb MSG two
+REM 29 2025 MSG three
+REM 29 Feb 2025 MSG four
+REM Thursday 29 MSG One
+REM Thursday 29 Feb MSG two
+REM Thursday 29 2025 MSG three
+REM Thursday 29 Feb 2025 MSG four
+REM Wednesday 29 MSG One
+REM Wednesday 29 Feb MSG two
+REM Wednesday 29 2025 MSG three
+REM Wednesday 29 Feb 2025 MSG four
+REM Friday 29 MSG One
+REM Friday 29 Feb MSG two
+REM Friday 29 2025 MSG three
+REM Friday 29 Feb 2025 MSG four
+EOF
+
+../src/remind -dte - 1 Mar 2025 <<'EOF' >> ../tests/test.out 2>&1
+BANNER %
+REM 29 MSG One
+REM 29 Feb MSG two
+REM 29 2025 MSG three
+REM 29 Feb 2025 MSG four
+REM Thursday 29 MSG One
+REM Thursday 29 Feb MSG two
+REM Thursday 29 2025 MSG three
+REM Thursday 29 Feb 2025 MSG four
+REM Wednesday 29 MSG One
+REM Wednesday 29 Feb MSG two
+REM Wednesday 29 2025 MSG three
+REM Wednesday 29 Feb 2025 MSG four
+REM Friday 29 MSG One
+REM Friday 29 Feb MSG two
+REM Friday 29 2025 MSG three
+REM Friday 29 Feb 2025 MSG four
+EOF
+
+
+(echo 'BANNER %'; echo 'REM 29 MSG No bug') | ../src/remind -dt - 29 Feb 2024 >> ../tests/test.out 2>&1
+
+../src/remind -ifoo - <<'EOF' >> ../tests/test.out 2>&1
+BANNER %
+DUMP
+EOF
+
+../src/remind '-i$AddBlankLines' - <<'EOF' >> ../tests/test.out 2>&1
+BANNER %
+DUMP
+EOF
+
+../src/remind ../tests/expr.rem >> ../tests/test.out 2>&1
+
 # Remove references to SysInclude, which is build-specific
 grep -F -v '$SysInclude' < ../tests/test.out > ../tests/test.out.1 && mv -f ../tests/test.out.1 ../tests/test.out
 cmp -s ../tests/test.out ../tests/test.cmp