Prep for 3.3.7 release.

REM 29 Feb SOME_WEEKDAY MSG ...

.gitattributes

@@ -0,0 +1,4 @@
+.gitignore		export-ignore
+.gitattributes		export-ignore
+remind.php		export-ignore
+sync-to-dianne-git	export-ignore

.gitignore

@@ -13,3 +13,4 @@ tests/test.out
 *~
 src/rem2ps
 src/version.h
+TAGS

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 1992-2018 Dianne Skoll, except where noted in
+2. REMIND is Copyright 1992-2021 Dianne Skoll, except where noted in
 individual files.
 
 3. DISTRIBUTION AND USE

Makefile

@@ -8,7 +8,7 @@ all: src/Makefile
 	@echo "*                 *"
 	@echo "*******************"
 	@echo ""
-	@cd src; $(MAKE) all LANGDEF=$(LANGDEF)
+	@cd src && $(MAKE) all LANGDEF=$(LANGDEF)
 
 install:
 	@echo ""
@@ -18,14 +18,14 @@ install:
 	@echo "*                   *"
 	@echo "*********************"
 	@echo ""
-	cd src; $(MAKE) install
+	@cd src && $(MAKE) install
 
 clean:
 	find . -name '*~' -exec rm {} \;
-	cd src; $(MAKE) clean
+	cd src && $(MAKE) clean
 
 test:
-	@cd src && $(MAKE) test
+	@cd src && $(MAKE) -s test
 
 distclean: clean
 	rm -f config.cache config.log config.status src/Makefile src/config.h tests/test.out www/Makefile

configure

@@ -3976,7 +3976,7 @@ fi
 
 
 if test "$GCC" = yes; then
-	CFLAGS="$CFLAGS -Wall -Wstrict-prototypes"
+	CFLAGS="$CFLAGS -Wall -Wextra -Wstrict-prototypes"
 fi
 
 for ac_func in setenv unsetenv glob mbstowcs setlocale
@@ -3991,7 +3991,7 @@ _ACEOF
 fi
 done
 
-VERSION=03.01.16
+VERSION=03.03.07
 
 ac_config_files="$ac_config_files src/Makefile www/Makefile src/version.h"
 

configure.in

@@ -71,10 +71,10 @@ AC_FUNC_UTIME_NULL
 AC_HEADER_TIME
 
 if test "$GCC" = yes; then
-	CFLAGS="$CFLAGS -Wall -Wstrict-prototypes"
+	CFLAGS="$CFLAGS -Wall -Wextra -Wstrict-prototypes"
 fi
 
 AC_CHECK_FUNCS(setenv unsetenv glob mbstowcs setlocale)
-VERSION=03.01.16
+VERSION=03.03.07
 AC_SUBST(VERSION)
 AC_OUTPUT(src/Makefile www/Makefile src/version.h)

docs/README.UNIX

@@ -1,4 +1,4 @@
-REMIND version 3.1 for UNIX
+REMIND version 3.2 for UNIX
 
 REMIND is a sophisticated alarm/calendar program.  Details are given
 in the man page, "remind.1".
@@ -6,16 +6,16 @@ in the man page, "remind.1".
 INSTALLING REMIND:
 -----------------
 
-If you have Tcl/Tk (wish 4.1 or higher) installed and are running X Windows:
---------------------------------------------------------------
+If you have Tcl/Tk (wish 4.1 or higher) installed and are running X11:
+----------------------------------------------------------------------
 
 1) Type: wish ./build.tk from the top-level Remind directory.
    Fill in the various options and hit "Build Remind"
 
 2) Type: "make install" -- you may need to be root to do this.
 
-If you do NOT have Tcl/Tk or are NOT running X Windows:
--------------------------------------------------------
+If you do NOT have Tcl/Tk or are NOT running X11:
+-------------------------------------------------
 
 1) Edit the file "src/custom.h" according to your preferences.
 
@@ -73,12 +73,12 @@ RELEASE NOTES -- miscellaneous info that couldn't go anywhere else!
 
 1. POPUP REMINDERS
 
-If you're running under X-Windows and you have the TCL tools,
-you can create simple pop-up reminders by creating the following
-TCL script called 'popup'.  It pops a message on to the screen and
-waits for you to press the 'OK' button.  If you don't press the OK button
-within 15 seconds, it exits anyway.  To use it, you can use the '-k' option
-for Remind as follows:
+If you're running under X11 and you have the Tcl tools, you can create
+simple pop-up reminders by creating the following Tcl script called
+'popup'.  It pops a message on to the screen and waits for you to
+press the 'OK' button.  If you don't press the OK button within 15
+seconds, it exits anyway.  To use it, you can use the '-k' option for
+Remind as follows:
 
 	remind "-kpopup '%s'&" .reminders
 
@@ -93,7 +93,7 @@ Norman Walsh.
 #!/usr/local/bin/wish
 wm withdraw .
 after 15000 { destroy . ; exit }
-tk_dialog .d { Message } $argv warning 0 { OK } 
+tk_dialog .d { Message } $argv warning 0 { OK }
 destroy .
 exit
 -------------- Cut Here ---------- Cut Here ---------- Cut Here -------------

docs/WHATSNEW

@@ -1,5 +1,220 @@
 CHANGES TO REMIND
 
+* VERSION 3.3 Patch 7 - 2021-05-10
+
+- MINOR FIX: Refuse to run "make test" as root --- it would fail
+  anyway with an obscure message.
+
+- BUG FIX: Remind would sometimes compute incorrect trigger date for:
+  REM Tue 29 Feb MSG ...
+
+- BUG FIX: Remind would sometimes compute incorrect trigger date for
+  a date spec like: Tue 31 2021 MSG ...
+
+* VERSION 3.3 Patch 6 - 2021-03-30
+
+- test/test.rem: Change local to en_US.utf-8 only if current locale
+  is not a UTF-8 locale.
+
+- MINOR CHANGE: Remind's arithemtic operators (+, -, *, /) give errors
+  on overflow rather than silently giving the wrong answer.
+
+- MINOR CHANGE: Add $IntMin and $IntMax system variables.
+
+- DOCUMENTATION FIX: Document that TkRemind now requires Tcl/Tk version
+  8.5 or newer.
+
+* VERSION 3.3 Patch 5 - 2021-01-21
+
+- NEW FEATURE: tkremind: Add ability to change fonts and colors from
+  within TkRemind "Options" dialog.
+
+- CHANGE: tkremind: TkRemind now requires Tcl/Tk 8.5 or newer.
+
+- CHANGE: tkremind: You can specify the location of the options
+  file on the command-line if you want to use one other than ~/.tkremindrc
+
+- CLEANUP: tkremind: Remove "Apply Options" from Options dialog; we only
+  need "Save Options".
+
+- DOC FIX: Add missing release note in 3.3.4 notes regarding
+  setpagedevice patch
+
+- DOC FIX: tkremind: Document shortcut keys.
+
+* VERSION 3.3 Patch 4 - 2021-01-12
+
+- NEW FEATURE: If "inotifywait" is installed, TkRemind uses it to refresh
+  the calendar display right away when the reminders file/directory is updated.
+  This makes TkRemind react almost instantly if external tools are editing
+  or updating reminders.
+
+- MINOR NEW FEATURE: rem2ps has a new '-x' option; this puts the day numbers
+  on the top-left of the day's box instead of the top-right.
+
+- MINOR FIXES: A typo in remind.1 was fixed; additional comments regarding
+  UNTIL were added.
+
+- BUG FIX: rem2ps: Call setpagedevice to set page size.  Based on a patch
+  from Jonathan Kamens.
+
+* VERSION 3.3 Patch 3 - 2020-11-09
+
+- BUG FIX: Fix startup crash in TkRemind if "Show Today's Reminders on
+  Startup" is enabled (which, unfortunately, is the default.)  Bug reported
+  by Martin Ziemer.
+
+* VERSION 3.3 Patch 2 - 2020-11-08
+
+- MINOR NEW FEATURE: Add MAYBE-UNCOMPUTABLE keyword; see the man page
+  and discussion at
+  https://dianne.skoll.ca/pipermail/remind-fans/2020/003745.html
+
+- CHANGE: TkRemind always invokes Remind with the "-itkremind=1" option,
+  even when printing.  NOTE INCOMPATIBILITY: This is a behavior change!
+  When you print from TkRemind, we also invoke Remind with "-itkprint=1"
+  so you can detect that PostScript is being generated.
+
+- CHANGE: The maxmimum length of a variable name has been increased from
+  16 characters to 64 characters.  Modern computers have plenty of memory.
+
+- BUG FIXES: Minor documentation updates, typo fixes, clarifications, etc.
+
+- BUG FIX: Fix calendar-drawing alignment errors when displaying UTF-8
+  strings with zero-width combining characters and strings with tabs.
+
+- BUG FIX: TkRemind would mess up placement of the WEEK special if invoked
+  with the "-m" option.  This has been fixed.
+
+- BUG FIX: TkRemind would sometimes fail with an error message when editing
+  a reminder; this is because it was interpreting months 08 and 09 as
+  illegal octal numbers.  This has been fixed.
+
+* VERSION 3.3 Patch 1 - 2020-03-20
+
+- CHANGE: For overlapping multi-day events, issue a reminder for the
+  most *recent* event rather than the earliest event.  NOTE
+  INCOMPATIBILITY: This is a behavior change!
+
+- CHANGE: Do not convert 90-99 to 1990-1999 when parsing numbers to
+  recognize years.  NOTE INCOMPATIBILITY: This is a behavior change!
+
+- CHANGE: Revert change to -y option that included filename and line
+  number in the hash.
+
+- CHANGE: Retain newlines (produced by %_) in JSON output.
+
+- FIX: Document $FormWidth system variable
+
+- FIX: Highlight today's date in "remind -c" output
+
+- FIX: Eliminate compiler warnings on Ubuntu 18.04.
+
+- IMPROVEMENT: Allow times to be specified either in 24-hour mode
+  (HH:MM or HH.MM) or AM/PM mode (HH:MMam; HH:MMpm, etc.)
+
+- IMPROVEMENT: Allow DURATION to be specified as a time (1:30) or a
+  number of minutes (90).
+
+- IMPROVEMENT: If terminal size can be determined, set $FormWidth to
+  terminal width - 8; if not, set $FormWidth to 72.
+
+- MINOR IMPROVEMENT: Add the "ampm()" built-in function.
+
+* Version 3.3 Patch 0 - 2020-01-31
+
+- FIX: rem2ps: Add a %%PageBoundingBox: document structuring convention
+  comment.
+
+- FIX: rem2ps: Ignore unknown SPECIAL-type reminders.
+
+- IMPROVEMENT: In calendar mode ("-c" option), Remind automatically adjusts
+  the width of the calendar to fit the terminal window if standard output
+  is a TTY.
+
+- IMPROVEMENT: Add JSON-based output with "remind -pp" and "remind -ppp"
+  The JSON-based intermediate format preserves a lot more information
+  about the original reminder, allowing back-ends more insight into
+  the intent of the reminder, the recurrence used, etc.  See the documentation
+  in "man rem2ps"
+
+- IMPROVEMENT: TkRemind can "reverse-engineer" reminders that it creates
+  using the additional information in the "remind -pp" format, so it
+  doesn't create or use ugly comment blocks to delimit the reminders
+  it creates.
+
+- IMPROVEMENT: TkRemind: Add popup help to most buttons and controls.
+
+- NEW FEATURE: Add support for $DefaultColor system variable, suggested
+  by Tim Chase.
+
+- NEW FEATURE: The "-@[n][,m]" command-line option allows colored reminders
+  in Agenda Mode as well as in Calendar Mode.  It also adds support for
+  terminal emulators that can handle the xterm 256-color escape sequences
+  as well as the true 24-bit color escape sequences.
+
+- CHANGE: SPECIALs are now case-insensitive.  Before, only SPECIAL COLOR
+  would work.  Now you can use Special Color, special color, etc.
+
+* Version 3.2 Patch 0 - 2020-01-03
+
+- IMPROVEMENT: Add support for events spanning multiple days (with AT
+  and DURATION).  Add trigeventstart() and trigeventduration()
+  introspection functions; see "MULTI-DAY EVENTS" in the man page.
+
+- IMPROVEMENT: Add introspection functions trigback(), trigdelta(),
+  trigduration(), trigfrom(), trigpriority(), trigrep(),
+  trigscanfrom(), trigtimedelta(), trigtimerep(), and triguntil().  See
+  man page for details; thanks to Tim Chase for the suggestion.
+
+- IMPROVEMENT: TkRemind: Use PNG images for the next month / previous
+  month buttons rather than -> and <-.  Also use nice anti-aliased
+  moon phase images instead of ugly blocky bitmaps.
+
+- CHANGE: Modify addition so that previously-illegal combinations
+  TIME + TIME, TIME + DATETIME and DATETIME + TIME are now allowed.
+  Also allow DATETIME - TIME.  If t1 and t2 are expressions of type TIME
+  and dt is an expression of type DATETIME, then the following are now
+  equivalent (before, the expressions on the left-hand side would fail
+  with a "Type mismatch" error.)
+
+  t1 + t2     ==     t1                + coerce("INT", t2)
+  dt + t2     ==     dt                + coerce("INT", t2)
+  t1 + dt     ==     coerce("INT", t1) + dt
+  dt - t2     ==     dt                - coerce("INT", t2)
+
+- DOC FIX: Document previously-undocumented $MaxStringLen system variable
+
+- DOC FIX: Various minor documentation fixes.
+
+- BUG FIX: Specifying a DURATION without an AT clause results in an error.
+  Before, it would be accepted but not do anything useful.
+
+- BUG FIX: Catch potential date overflow in slide() function
+
+- BUG FIX: Fix compile error when compiling Romanian version; eliminate
+  compiler warning when compiling non-English versions.
+
+- BUG FIX: TkRemind: Fix startup failure of TkRemind if options are at
+  default. :(
+
+* Version 3.1 Patch 17 - 2019-11-15
+
+- IMPROVEMENT: Add "Extra Remind Options" setting to TkRemind.
+
+- IMPROVEMENT: Enable warning-free compilation even with gcc -Wextra flag.
+
+- IMPROVEMENT: Warn if "OMIT a THROUGH b" has a > b.
+
+- SYNTACTIC SUGAR: Make "SCANFROM -n" the same as "SCANFROM [today() - n]"
+
+- BUG FIX: Don't dump expired reminders when dumping queue.
+
+- BUG FIX: Fix failure when specifying a Jahrzeit in Adar.  Fix
+  courtesy of Dov Feldstern
+
+- BUG FIX: Fix various documentation errors and update man page.
+
 * Version 3.1 Patch 16 - 2018-11-09
 
 - IMPROVEMENT: Add patch from Stephen Morgan to calculate astronomical and

examples/defs.rem

@@ -26,8 +26,8 @@ RUN OFF
 ################################################
 # Ensure required version of remind is used... #
 ################################################
-IF version() < "03.01.08"
-   ERRMSG This file requires at least version 03.01.08 of Remind.%
+IF version() < "03.01.09"
+   ERRMSG This file requires at least version 03.01.09 of Remind.%
    ERRMSG This version is version [version()].
    EXIT
 ENDIF
@@ -84,7 +84,6 @@ SET December  12
 ###########################################################
 # Other symbolic constants and functions for "pasting"... #
 ###########################################################
-
 SET Quote CHAR(34)
 
 # Handy constants/function for specifing week of month...
@@ -95,29 +94,17 @@ SET  Week_4		22
 FSET _last(mo)		"1 " + MON((mo%12)+1) + " --7"
 
 # Handy function to provide SCANFROM dates...
-FSET _back(days)	TODAY()-days
-
-###########################################################
-# Function which returns a string in "am/pm" format based #
-# on the time.  For example, set a am_pm(NOW())...        #
-###########################################################
-
-FSET _am_pm(tm)	IIF(tm<01:00, tm+12*60+"am", \
-                    tm<12:00, tm+"am", \
-                    tm<13:00, tm+"pm", \
-                              tm-12*60+"pm")
+FSET _back(days)	$U-days
 
 #################################################################
-# Function which removes a single leading zero from a string... #
+# Function that removes a single leading zero from a string...  #
 #################################################################
-
 FSET _no_lz(s) IIF(SUBSTR(s, 1, 1)=="0", SUBSTR(s, 2), s)
 
 #################################################################
 # Return the length of the daylight/night portion of a date,    #
 # in minutes.                                                   #
 #################################################################
-
 FSET _light_len(date) MAX(SUNSET(date)-SUNRISE(date), 0)
 FSET _dark_len(date) 1440-_light_len(date)
 
@@ -125,26 +112,12 @@ FSET _dark_len(date) 1440-_light_len(date)
 # Function to calculate number of years since a given year #
 # or number of months since a given month and year...      #
 ############################################################
-
-FSET _yr_num(yr)		ORD(YEAR(TRIGDATE()) - yr)
-FSET _mo_num(mo, yr)		ORD(12 * (YEAR(TRIGDATE()) - yr) + \
-					MONNUM(TRIGDATE()) - mo)
+FSET _yr_num(yr)		ORD($Ty - yr)
+FSET _mo_num(mo, yr)		ORD(12 * ($Ty - yr) + $Tm - mo)
 
 # Here's an example of how to use them:
-REM 1 Nov ++12 MSG %"Dean's [_yr_num(1984)] birthday%" is %b.
-REM 1 MSG Dean's [_mo_num(11, 1984)] 'monthly' anniversary
-
-###########################################################
-# Function to send mail via elm's "fastmail" (by GMS!)... #
-###########################################################
-
-#FSET _mail(from, subj)	"mailx -s " + \
-#				Quote + from + " : " + subj + Quote \
-#				GETENV("LOGNAME") + " < /dev/null 1>&0"
-FSET _mail(from, subj)	"fastmail -f " + \
-				Quote + from + Quote + \
-				" -s " + Quote + subj + Quote + \
-				" /dev/null " + GETENV("LOGNAME")
+REM 1 Nov ++12 MSG %"John's [_yr_num(1984)] birthday%" is %b.
+REM 1 MSG John's [_mo_num(11, 1984)] 'monthly' anniversary
 
 #############################################################################
 # Here's a tricky problem:  The 4th of July is a holiday in the U.S.
@@ -158,29 +131,28 @@ FSET _mail(from, subj)	"fastmail -f " + \
 # dependent upon the current date, it's tricky and results may not be
 # what you expect.  You should try to make sure that the OMIT context
 # "near" any current reminders will not change during a calendar run.
-# The SCANFROM clause should help make these OMITs very safe.
+# The SCANFROM clause will make these OMITs safe.
 ############################################################################
 
 # Calculate the weekday of the holiday.
 REM 4 July SCANFROM [_back(7)] SATISFY 1
 
-IF WKDAYNUM(TRIGDATE()) == Sat
-	REM [TRIGDATE()] MSG Independence day (actual)
-	OMIT [TRIGDATE()-1] MSG Independence day (observed)
+SET iday $T
+IF WKDAYNUM(iday) == Sat
+	REM [iday] MSG Independence day (actual)
+	OMIT [iday-1] MSG Independence day (observed)
 ELSE
-	IF WKDAYNUM(TRIGDATE()) == Sun
-		REM [TRIGDATE()] MSG Independence day (actual)
-		OMIT [TRIGDATE()+1] MSG Independence day (observed)
+	IF WKDAYNUM(iday) == Sun
+		REM [iday] MSG Independence day (actual)
+		OMIT [iday+1] MSG Independence day (observed)
 	ELSE
-		OMIT [TRIGDATE()] MSG Independence day
+		OMIT [iday] MSG Independence day
 	ENDIF
 ENDIF
 
 ############################################################################
-#									   #
 # A meeting on the first Monday of every month which is moved to the       #
 # second Monday in the event of a holiday.                                 #
-#									   #
 ############################################################################
 
 # First, the normal meeting.  However, the SKIP keyword means this
@@ -192,68 +164,21 @@ REM Mon 8 SATISFY 1
 
 # But only actually trigger the delayed meeting if the previous
 # Monday was a holiday
-IF ISOMITTED(TRIGDATE()-7)
-   REM [TRIGDATE()] MSG Delayed meeting
+IF ISOMITTED($T-7)
+   REM [$T] MSG Delayed meeting
 ENDIF
 
-############################################################################
-#									   #
-# A very complicated reminder sent in by a Remind user.			   #
-# This person gets paid every two weeks, starting from 8 January 1993.	   #
-# If a pay date occurs before the twelfth of a month, then that		   #
-# he pays his mortgage on that pay date.  Otherwise, he pays the mortgage  #
-# on the previous pay date.  Furthermore, he has to schedule his	   #
-# mortgage payment six days before it is due.  He wants to be reminded	   #
-# a further four days before the scheduling deadline.  He also		   #
-# wants to be mailed a notice two weeks before the scheduling deadline.	   #
-#									   #
-# Here's the solution - if you can follow this, consider yourself a	   #
-# Remind programmer extraordinaire!					   #
-#									   #
-############################################################################
-
-# A function to determine whether or not a pay-date is a mortgage-date.
-
-FSET _IsMortDate(x) DAY(x) < 12 || (DAY(x+14) >= 12 && DAY(x+14) <= 14)
-
-# Paydays - for reference
-
-REM 8 Jan 1993 *14 MSG Payday
-
-# Calculate the mortgage payment six days ahead of time.  Note that this
-# is done "implicitly" by subtracting 6 from the starting date - we start
-# on 2 Jan rather than 8 Jan.  We add 6 to TRIGDATE() in _IsMortDate to
-# compensate.
-
-REM 2 Jan 1993 *14 ++4 SATISFY [_IsMortDate(TRIGDATE()+6)] \
-	MSG %"Schedule mortgage payment%" for %a.
-
-# Now the mail reminder two weeks before the payment date - because two
-# weeks before a payment date is also a payment date, no pre-compensation
-# in the starting date of 8 Jan is necessary - convince yourself of this!
-# This uses the _mail() function defined earlier.
-
-REM ONCE 8 Jan 1993 *14 SATISFY [_IsMortDate(TRIGDATE()+14)] \
-	RUN [_mail("Decatur Federal", \
-		"Pay mortgage by the " + ORD(DAY(TRIGDATE()+14)))]
-
-# Make an entry on the calendar when the mortgage should be paid
-
-REM 8 Jan 1993 *14 SATISFY [_IsMortDate(TRIGDATE())] \
-	CAL Mortgage payment
-
 ##########################################################################
 #								         #
-# On our UNIX system, I run a program which queries the university       #
+# On our UNIX system, I run a program that queries the university       #
 # library and creates a file called ".booksdue".  This file is           #
 # a REMIND script to tell me when my library books are due.  Here's      #
 # an example from my reminder file - it shows the use of filedate().     #
 # When the .booksdue file is at least 7 days old, I create a new version #
 # by querying the library computer.  Note the use of realtoday() rather  #
-# than today.   						         #
+# than today().  						         #
 #								         #
 ##########################################################################
-
 IF !$RunOff && !$CalMode && !$SimpleCal
    IF REALTODAY()-FILEDATE("/home/dfs/.booksdue") >= 7
       REM RUN /home/dfs/bilge/library/getbooks
@@ -283,7 +208,7 @@ REM Sat Sun SPECIAL SHADE 220
 #############################################################################
 
 SET SaveTrig $NumTrig
-SET easter EASTERDATE(YEAR(TODAY()))
+SET easter EASTERDATE($Uy)
 REM  [easter-46] MSG %"Ash Wednesday%"
 REM  [easter-7]  MSG %"Palm Sunday%"
 OMIT [easter-2]  MSG %"Good Friday%"
@@ -301,7 +226,7 @@ REM  Mon Jan [Week_3]	MSG Martin Luther King - %"MLK Day%"
 REM      Feb  2		MSG %"Ground Hog Day%"
 REM      Feb 14		MSG %"Valentine's%" Day
 REM  Mon Feb [Week_3]	SCANFROM [_back(7)] SATISFY 1
-OMIT [trigdate()] MSG %"President's Day%"
+OMIT [$T] MSG %"President's Day%"
 REM      Mar 17		MSG %"St. Patrick's%" Day
 
 # The DST rules are accurate for most locations in
@@ -319,23 +244,23 @@ REM  Sat May [Week_1]	MSG %"Kentucky Derby%"
 REM  Sun May [Week_2]	MSG %"Mother's Day%"
 REM  Sat May [Week_3]	MSG %"Armed Forces Day%"
 REM  Mon [_last(May)]	SCANFROM [_back(7)] SATISFY 1
-OMIT [trigdate()] MSG %"Memorial Day%"
+OMIT [$T] MSG %"Memorial Day%"
 REM      Jun 14		MSG %"Flag Day%"
 REM  Sun Jun [Week_3]	MSG %"Father's Day%"
 REM  Mon Sep [Week_1]	SCANFROM [_back(7)] SATISFY 1
-OMIT [trigdate()] MSG %"Labor Day%"
+OMIT [$T] MSG %"Labor Day%"
 REM  Mon Oct [Week_2]	MSG %"Columbus Day%"
 REM      Nov 11		MSG %"Veterans Day%"
 
 REM      Oct 30		MSG %"Mischief Night%"
 REM      Oct 31		MSG %"Halloween%"
 REM  Tue Nov  2		SCANFROM [_back(7)] \
-	SATISFY [(YEAR(TRIGDATE()) % 4) == 0] \
+	SATISFY [($Ty % 4) == 0] \
 	MSG %"Election%" Day
 REM  Thu Nov [Week_4]	SCANFROM [_back(7)] SATISFY 1
-OMIT [trigdate()] MSG %"Thanksgiving%" Day
+OMIT [$T] MSG %"Thanksgiving%" Day
 REM  Fri Nov [Week_4+1]	SCANFROM [_back(7)] SATISFY 1
-OMIT [trigdate()] MSG %"Thanksgiving%" (cont.)
+OMIT [$T] MSG %"Thanksgiving%" (cont.)
 OMIT     Dec 24		MSG %"Christmas Eve%"
 OMIT     Dec 25		MSG %"Christmas%" Day
 
@@ -350,13 +275,6 @@ if $NumTrig > SaveTrig
 	REM SPECIAL SHADE 220
 endif
 
-# Seasons (valid from 1992 to 2000)...
-REM Mar 20 MSG %"Spring%" begins
-REM Jun [IIF(YEAR(TODAY())%4, 21, 20)] MSG %"Summer%" begins
-REM Sep [CHOOSE(YEAR(TODAY())-1991, 22,22,23,23,22,22,22,23,22)] \
-	MSG %"Fall%" begins
-REM Dec [IIF((YEAR(TODAY())+1)%4, 21, 22)] MSG %"Winter%" begins
-
 #PSSTUFF2
 ##########################################################################
 #									 #
@@ -370,7 +288,7 @@ REM Dec [IIF((YEAR(TODAY())+1)%4, 21, 22)] MSG %"Winter%" begins
 # example, I recommend that you use the -sd 10 option for Rem2PS.
 REM PS Border Border moveto \
    /DayFont findfont DaySize scalefont setfont \
-   ([hebday(today())] [hebmon(today())]) show
+   ([hebday($U)] [hebmon($U)]) show
 
 # Fill in the phases of the moon on the PostScript calendar
 [moondate(0)] SPECIAL MOON 0
@@ -382,7 +300,7 @@ REM PS Border Border moveto \
 # calendar - the sizes are hard-coded, however, and work best in landscape.
 REM PS Border Border 5 sub moveto \
 	/SmallFont findfont 4 scalefont setfont \
-	(Sunrise: [sunrise(trigdate())] Sunset: [sunset(trigdate())]) show
+	(Sunrise: [sunrise($T)] Sunset: [sunset($T)]) show
 
 # The next one puts the day number (1-366) and days left in the year at the
 # bottom of the post-script calendar.  Again, the hard-coded sizes work best
@@ -390,7 +308,7 @@ REM PS Border Border 5 sub moveto \
 FSET _DayOfYear(x) x-(date(year(x),1,1) - 1)
 REM PS BoxWidth 3 mul 4 div Border 5 sub moveto \
 	/SmallFont findfont 4 scalefont setfont \
-	([_DayOfYear(today())]([365+isleap(today())-_DayOfYear(today())])) show
+	([_DayOfYear($U)]([365+isleap($U)-_DayOfYear($U)])) show
 
 #JHOLS
 ##########################################################################
@@ -430,7 +348,7 @@ SET Reform 0
 
 # Convenient function definition to save typing
 FSET _h(x, y) HEBDATE(x,y)
-FSET _h2(x, y) HEBDATE(x, y, TODAY()-7)
+FSET _h2(x, y) HEBDATE(x, y, $U-7)
 FSET _PastSat(x, y) IIF(WKDAYNUM(_h2(x,y))!=6, _h2(x,y), _h2(x,y)+1)
 FSET _PastSun(x, y) IIF(WKDAYNUM(_h2(x,y))!=0, _h2(x,y), _h2(x,y)+1)
 FSET _PastMon(x, y) IIF(WKDAYNUM(_h2(x,y))!=1, _h2(x,y), _h2(x,y)+1)
@@ -464,7 +382,7 @@ ELSE
 ENDIF
 
 # Because Kislev can change length, we must be more careful about Chanukah
-FSET _chan(x) HEBDATE(24, "Kislev", today()-9)+x
+FSET _chan(x) HEBDATE(24, "Kislev", $U-9)+x
 [_chan(1)] ++4 MSG %"Chanukah 1%" is %b.
 [_chan(2)] MSG %"Chanukah 2%"
 [_chan(3)] MSG %"Chanukah 3%"
@@ -553,9 +471,9 @@ ENDIF
 # Counting the omer - do the whole spiel, i.e:
 # "This is the xth day of the omer, being y weeks and z days of the omer."
 # Nice Remind programming example here!
-SET ostart HEBDATE(16, "Nisan", TODAY()-50)
-IF ostart <= TODAY() && (TODAY() - ostart < 49)
-   SET odays TODAY()-ostart+1
+SET ostart HEBDATE(16, "Nisan", $U-50)
+IF ostart <= $U && ($U - ostart < 49)
+   SET odays $U-ostart+1
    IF odays < 7
       MSG %"%"Today is the [ORD(odays)] day of the Omer.
    ELSE
@@ -573,8 +491,8 @@ ENDIF
 ### for Friday and Saturday.  Note:  You must set your latitude, longitude
 ### and possibly time zone for these to work properly!
 
-REM Friday   CAL Candle lighting at [sunset(trigdate())-18]
-REM Saturday CAL Havdalah at [sunset(trigdate())+42]
+REM Friday   CAL Candle lighting at [sunset($T)-18]
+REM Saturday CAL Havdalah at [sunset($T)+42]
 
 #COLORS
 ##########################################################################

man/rem.1

@@ -1,4 +1,4 @@
-.TH REM 1 "30 August 2007"
+.TH REM 1 "1 January 2021"
 .UC 4
 .SH NAME
 rem \- Invoke Remind with a default filename

man/rem2ps.1

@@ -1,13 +1,13 @@
-.TH REM2PS 1 "11 April 2005"
+.TH REM2PS 1 "5 January 2021"
 .UC 4
 .SH NAME
 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 running
-\fBRemind\fR with the \fB\-p\fR option.  It emits PostScript code (which
-draws a calendar) to the standard output.
+\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
 data.  This may be useful if you wish to create other \fBRemind\fR
@@ -29,6 +29,11 @@ include any document structuring comments in your prologue.
 Produce the calendar in landscape mode rather than the default
 portrait mode.
 .TP
+.B \-x
+When printing the calendar, place the day numbers in the top-left of each
+day's box.  If this option is omitted, the day numbers appear in the
+top-right.
+.TP
 \fB\-c\fR[\fIn\fR]
 If \fIn\fR is omitted, disables the small calendars for next and previous
 months which are normally generated.  If \fIn\fR is supplied, it can range
@@ -267,7 +272,7 @@ hold:
 .TP
 o
 The PostScript origin is at the bottom left-hand corner of the page, and
-PostScript units of 1/72" are in effect.
+PostScript units of 1/72 inch are in effect.
 .TP
 o
 The variables MinX, MinY, MaxX and MaxY define the bounding box within
@@ -313,7 +318,13 @@ 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
 calendar.
 .PP
-.SH REM2PS INPUT FORMAT
+.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
+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
 \fBRemind \-p\fR sends the following lines to standard output.
 The information is designed to be easily parsed by back-end programs:
 .TP
@@ -375,6 +386,9 @@ was provided.
 .PP
 \fIbody\fR is the body of the reminder.
 .PP
+Future versions of \fBRemind\fR may add additional keys to the JSON
+object.  Back-ends \fImust\fR ignore keys they don't recognize.
+.PP
 After a month's worth of reminders have been emitted, \fBRemind\fR
 emits the line:
 .PP
@@ -393,6 +407,247 @@ the line number and file name of the file containing the reminder.  Back-ends
 that don't care about this information should ignore lines starting with
 "#" (except, of course, for the # rem2ps lines.)
 .PP
+.SH REM2PS PARTIAL JSON INPUT FORMAT (-PP OPTION)
+\fBRemind \-pp\fR sends the following lines to standard output.  They
+are designed to be easily parsed, but contain much more information
+than the old-style \fBremind -p\fR output.  The extra information
+contains a representation of the parsed "REM" statement, which could
+allow converters to better preserve semantics of a reminder.  For
+example, this format passes enough information to allow a back-end to
+(in many cases) determine a reminder's recurrence rather than just treating
+each reminder as a one-off event.
+.PP
+The lines emitted by \fBremind \-pp\fR are as follows:
+.TP
+.B # rem2ps2 begin
+This line signifies the start of calendar data.  Back-ends can search
+for it to verify they are being fed correct information.  Note the
+"2" after "rem2ps", which distinguishes this format from the older \fB\-p\fR
+format.
+.TP
+\fImonth_name year num_days first_day monday_first\fR
+Same as the \fB\-p\fR format
+.TP
+\fIsun mon tue wed thu fri sat\fR
+Same as the \fB\-p\fR format
+.TP
+\fInext_mon next_days\fR
+Same as the \fB\-p\fR format
+.TP
+\fIprev_mon prev_days\fR
+Same as the \fB\-p\fR format
+.PP
+.B CALENDAR ENTRIES
+.PP
+The remaining data consists of calendar entries expressed as a JSON object
+on a single line.  Each such line will begin with "{" and will be a well-formed
+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
+of the reminder expressed as a string in the format \fIYYYY-MM-DD\fR
+.TP
+.B filename \fIf\fR
+The filename in which the reminder was found.
+.TP
+.B lineno \fIn\fR
+The line number within the file on which the reminder was found.
+.TP
+.B nonconst_expr 1
+If the reminder contained a non-constant expression that had to be evaluated
+to determine the trigger date, this key will be present with the value 1.
+If this key is present, then it is unsafe for a back-end to rely on
+recurrence semantics or even the semantics of any part of the parsed
+reminder, as they may have been computed in a way that cannot be expressed
+in JSON.
+.TP
+.B if_depth \fIn\fR
+If the reminder is inside one or more IF or ELSE statements, this key
+will be present and the value will be the number of nested IFs from
+the top-level to the reminder.  Back-ends should be wary of
+interpreting recurrence semantics of reminders within an IF or ELSE
+block.
+.TP
+.B passthru \fIspecial\fR
+If the reminder was a SPECIAL reminder, the \fBpassthru\fR key will be
+present and the value will be the type of SPECIAL (such as SHADE, COLOR,
+MOON, etc.)
+.TP
+.B tags \fIdata\fR
+If any TAG clauses are present, the \fBtag\fR key will be present and consist
+of a comma-separated list of tags.
+.TP
+.B time \fIt\fR
+If an AT clause was present, this key will contain the time of the AT clause
+in minutes after midnight.
+.TP
+.B tdelta \fIn\fR
+If a time delta (+n after an AT clause) was present, this key contains the
+delta value in minutes.
+.TP
+.B trep \fIn\fR
+If a time repeat (*n after an AT clause) was present, this key contains the
+repeat value in minutes.
+.TP
+.B eventduration \fIn\fR
+If a DURATION clause was present, this key contains the event duration in
+minutes.
+.TP
+.B duration \fIn\fR
+If a DURATION clause was present, this key contains today's duration in
+minutes.  See the \fBremind(1)\fR man page, "MULTI-DAY EVENTS", for a
+discussion of duration vs. event duration.
+.TP
+.B eventstart \fIdt\fR
+If an AT clause was present, this key contains the event start time in
+the format \fIYYYY-MM-DDTHH:MM\fR.
+.TP
+.B back \fIn\fR
+If the reminder contained a "back" clause (\-n or \-\-n), this key
+contains the back value.  If the "back" value was \-n, the value will
+be positive; if it was \-\-n, the value will be negative.
+.TP
+.B delta \fIn\fR
+If the reminder contained a "delta" clause (\+n or \+\+n), this key
+contains the delta value.  If the "delta" value was \+n, the value will
+be positive; if it was \+\+n, the value will be negative.
+.TP
+.B rep \fIn\fR
+If the reminder contained a "repeat" clause (*n), this key contains
+the repeat value.
+.TP
+.B skip \fItype\fR
+If the reminder contained a SKIP, BEFORE or AFTER keyword, then this
+key will contain that keyword.
+.TP
+.B localomit \fIarray\fR
+If the reminder contains a local OMIT keyword, this key will be present.
+Its value will be an array of English day names that are OMITted.
+.TP
+.B wd \fIarray\fR
+If the reminder contains one or more weekdays, this key will be present.
+Its value will be an array of English day names that are present.
+.TP
+.B d \fIn\fR
+If a day-of-month is present in the reminder specification, this key
+will be present and its value will be the day number.
+.TP
+.B m \fIn\fR
+If a month is present in the reminder specification, this key
+will be present and its value will be the month number.
+.TP
+.B y \fIn\fR
+If a year is present in the reminder specification, this key
+will be present and its value will be the year.
+.TP
+.B until \fIYYYY-MM-DD\fR
+If the reminder contains an UNTIL or THROUGH clause, this key
+will be present.  Its value will be a string of the form YYYY-MM-DD.
+.TP
+.B once 1
+If the reminder contains a ONCE keyword, this key will be present
+with a value of 1.
+.TP
+.B scanfrom \fIYYYY-MM-DD\fR
+If the reminder contains a SCANFROM keyword, this key will be present
+and its value will be a string of the form YYYY-MM-DD.
+.TP
+.B from \fIYYYY-MM-DD\fR
+If the reminder contains a FROM keyword, this key will be present
+and its value will be a string of the form YYYY-MM-DD.
+.TP
+.B priority \fIn\fR
+The priority of the reminder.  Always present; if no PRIORITY keyword
+is specified, then a reminder has a default priority of 5000.
+.TP
+.B r \fIn\fR
+For a SHADE or COLOR special, the red color component.
+.TP
+.B g \fIn\fR
+For a SHADE or COLOR special, the green color component.
+.TP
+.B b \fIn\fR
+For a SHADE or COLOR special, the blue color component.
+.TP
+.B body \fIbody\fR
+The body of the reminder to issue.  Always present.
+.TP
+.B rawbody \fIraw\fR
+The "raw" body of the reminder, before any expression-pasting or
+substitution-sequence processing.  If the raw body would be the same
+as the processed body, then this key is not present.
+.PP
+After a month's worth of reminders have been emitted, \fBRemind\fR
+emits the line:
+.PP
+\fB# rem2ps2 end
+.PP
+However, back-ends should keep reading until EOF in case more data for
+subsequent months is forthcoming.
+.PP
+
+.SH REM2PS PURE JSON INPUT FORMAT (-PPP OPTION)
+\fBRemind \-ppp\fR emits \fIpure JSON\fR output.  The format is
+as follows:
+.PP
+\fBRemind\fR outputs a JSON array.  Each element of the array is a
+\fImonth descriptor\fR.
+.PP
+Each month descriptor is a JSON object with the following elements:
+.TP
+.B monthname \fIname\fR
+The name of the month.
+.TP
+.B year \fIyyyy\fR
+The year.
+.TP
+.B daysinmonnth \fIn\fR
+The number of days in the current month.
+.TP
+.B firstwkday \fIn\fR
+The weekday of the first day of the month (0 = Sunday, 1 = Monday, 6 = Saturday).
+.TP
+.B mondayfirst \fIn\fR
+An indicator of whether or not the calendar week should start with
+Sunday (n=0) or Monday (n=1).
+.TP
+.B daynames \fR[\fIdays\fR]
+A seven-element array of day names; each element is a string representing
+the names of the days from Sunday through Saturday.
+.TP
+.B prevmonthname \fIname\fR
+The name of the previous month.
+.TP
+.B daysinprevmonth \fIn\fR
+The number of days in the previous month.
+.TP
+.B prevmonthyear \fIyyyy\fR
+The year of the previous month.  (The same as \fByear\fR unless the current
+month is January.)
+.TP
+.B nextmonthname \fIname\fR
+The name of the following month.
+.TP
+.B daysinnextmonth \fIn\fR
+The number of days in the following month.
+.TP
+.B nextmonthyear \fIyyyy\fR
+The year of the following month.  (The same as \fByear\fR unless the
+current month is December.)
+.TP
+.B entries \fR[\fIarray\fR]
+The \fBentries\fR key consists of an array of calendar entries; each
+entry is a JSON object that has the same format as described in the
+\fBCALENDAR ENTRIES\fR section in the \fB\-PP FORMAT\fR section,
+\fIwith the following difference\fR: In \fB\-PP\fR mode, if a reminder
+has \fB%"\fR markers, only the text between the markers
+is included in the \fBbody\fR element.  In \fB\-PPP\fR mode, the
+entire text \fIincluding\fR the \fB%"\fR markers is included and it's up to
+the back-end to extract the portion between the markers if that
+is desired.
+
+
 .SH AUTHOR
 Rem2PS was written by Dianne Skoll <dianne@skoll.ca>
 .SH BUGS

man/remind.1

@@ -1,4 +1,4 @@
-.TH REMIND 1 "31 August 2008"
+.TH REMIND 1 "1 January 2021"
 .UC 4
 .SH NAME
 remind \- a sophisticated reminder service
@@ -26,7 +26,7 @@ Anything after the __EOF__ marker is completely ignored.
 
 .SH OPTIONS
 \fBRemind\fR has a slew of options.  If you're new to the program,
-ignore them for now and skip to the section "Reminder Files".
+ignore them for now and skip to the section "REMINDER FILES".
 .TP
 .B \-n
 The \fB\-n\fR option causes \fBRemind\fR to print the \fBnext\fR occurrence
@@ -46,7 +46,8 @@ The \fB\-c\fR option causes \fBRemind\fR to produce a calendar that is
 sent to standard output.  If you supply a number \fIn\fR, then a
 calendar will be generated for \fIn\fR months, starting with the
 current month.  By default, a calendar for only the current month is
-produced. 
+produced.
+.RS
 .PP
 You can precede \fIn\fR (if any) with a set of flags.  The flags
 are as follows:
@@ -72,24 +73,54 @@ only work on terminals that are set to UTF-8 character encoding.
 .TP
 .B 'c'
 causes \fBRemind\fR to use VT100 escape sequences to approximate
-SPECIAL COLOR reminders.  The approximation is (of necessity) very
+SPECIAL COLOR reminders.  Note that this flag is kept for
+backwards-compatibility; you should use the \fB\-@\fI[n][,m]\fR
+command-line option instead.
+.RE
+
+.TP
+.B \-@\fR[\fIn\fR][,\fIm\fR]
+Tells \fBRemind\fR to approximate SPECIAL COLOR reminders using VT100
+escape sequences.  The approximation is (of necessity) very
 coarse, because the VT100 only has eight different color sequences,
 each with one of two brightnesses.  A color component greater than
 64 is considered "on", and if any of the three color components is
 greater than 128, the color is considered "bright".
-
+.RS
+.PP
+If you supply the optional numeric parameters, the have the following
+meanings:  \fIn\fR=0 tells \fBRemind\fR to use the standard 16 VT100
+colors.  \fIn\fR=1 tells it to use an extended 256-color palette supported
+by many terminal emulators such as xterm.  And \fIn\fR=2 tells it to
+use escape sequences that support true 24-bit colors, again supported
+by many terminal emulators such as xterm.
+.PP
+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, 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.
+.RE
 .TP
 .B \-w\fR\fIcol\fR[,\fIpad\fR[,\fIspc\fR]]]
 The \fB\-w\fR option specifies the output width, padding and spacing
 of the formatted calendar output.  \fICol\fR specifies the number of
-columns in the output device, and defaults to 80.  \fIPad\fR specifies
-how many lines to use to "pad" empty calendar boxes.  This defaults to
-5.  If you have many reminders on certain days that make your calendar
-too large to fit on a page, you can try reducing \fIpad\fR to make the
-empty boxes smaller.  \fISpc\fR specifies how many blank lines to leave
-between the day number and the first reminder entry.  It defaults to 1.
+columns in the output device.  If not specified, or specified as 0,
+it defaults to the larger of 71 or the actual width of your terminal,
+or to 80 if standard output is not a terminal.
 .RS
 .PP
+\fIPad\fR specifies how many lines
+to use to "pad" empty calendar boxes.  This defaults to 5.  If you
+have many reminders on certain days that make your calendar too large
+to fit on a page, you can try reducing \fIpad\fR to make the empty
+boxes smaller.  \fISpc\fR specifies how many blank lines to leave
+between the day number and the first reminder entry.  It defaults to
+1.
+.PP
 Any of \fIcol\fR, \fIpad\fR or \fIspc\fR can be omitted, providing you
 provide the correct number of commas.  Don't use any spaces in the option.
 .RE
@@ -106,17 +137,27 @@ If you immediately follow the \fBs\fR with the letter
 day they actually occur \fIas well as\fR on any preceding days specified
 by the reminder's \fIdelta\fR.
 .TP
-.B \-p\fR[\fBa\fR]\fIn\fR
+.B \-p\fR[\fBa\fR][\fBp\fR][\fBp\fR]\fIn\fR
 The \fB\-p\fR option is very similar to the \fB\-s\fR option, except
 that the output contains additional information for use by the
-\fBRem2PS\fR program, which creates a PostScript calendar.  For this
+\fBRem2PS\fR program, which creates a PostScript calendar, and various
+other back-end programs.  For this
 option, \fIn\fR cannot start with "+"; it must specify a number of months.
 The format of the \fB\-p\fR output is described in the \fBrem2ps(1)\fR
 man page.  If you immediately follow the \fBp\fR with the letter
 \fBa\fR, then \fBRemind\fR displays 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.
-
+by the reminder's \fIdelta\fR.  If you follow the \fBp\fR with another
+\fBp\fR, then \fBRemind\fR uses a more comprehensive JSON-based
+format rather than the "simple calendar" format.  This format is
+also documented in the \fBrem2ps(1)\fR man page.  Finally, if you use
+three p's, as in \fB\-ppp\fR, then \fBRemind\fR uses a pure JSON
+format, again documented in \fBrem2ps(1)\fR.
+.RS
+.PP
+Note that the \fB\-pp\fR or \fB\-ppp\fR options also enable the \fB\-l\fR
+option.
+.RE
 .TP
 .B \-l
 If you use the \-l option in conjunction with the \-p option, then
@@ -207,7 +248,7 @@ encountered in the reminder script.  The \fB\-g\fR option cause
 \fBRemind\fR to sort reminders by date and time prior to issuing them.
 The optional \fBa\fR and \fBd\fR characters specify the sort order
 (ascending or descending) for the date, time and priority fields.  See
-the section "Sorting Reminders" for more information.
+the section "SORTING REMINDERS" for more information.
 
 .TP
 \fB\-b\fR[\fIn\fR]
@@ -282,7 +323,7 @@ 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.
 .TP
 \fB\-i\fR\fIfunc\fR(\fIargs\fR)=\fIdefinition\fR
 Allows you to define a function on the command line.
@@ -293,14 +334,15 @@ If you supply a \fIdate\fR on the command line, it must consist of
 of the month, and \fIyear\fR is a year (all 4 digits) from 1990 to
 about 2075.  You can leave out the \fIday\fR, which then defaults to 1.
 .PP
-If you do supply a \fIdate\fR on the command line, then \fBRemind\fR uses
-it, rather than the actual system date, as its notion of "today."
-This lets you create calendars for future months, or test to see
-how your reminders will be triggered in the future.  Similarly,
-you can supply a \fItime\fR (in 24-hour format -- for example, 17:15) to
-set \fBRemind\fR's notion of "now" to a particular time.  Supplying
-a \fItime\fR on the command line also implicitly enables the \fB\-q\fR
-option and disables the \fB\-z\fR option.
+If you do supply a \fIdate\fR on the command line, then \fBRemind\fR
+uses it, rather than the actual system date, as its notion of "today."
+This lets you create calendars for future months, or test to see how
+your reminders will be triggered in the future.  Similarly, you can
+supply a \fItime\fR to set \fBRemind\fR's notion of "now" to a
+particular time.  Supplying a \fItime\fR on the command line also
+implicitly enables the \fB\-q\fR option and disables the \fB\-z\fR
+option.  The \fItime\fR may be specified in 24-hour format (eg, 13:20)
+or common "AM/PM" format (1:20pm).
 .PP
 If you would rather specify the date more succinctly, you can supply
 it as YYYY-MM-DD or YYYY/MM/DD.  You can even supply a date and
@@ -310,7 +352,7 @@ In addition, you can supply a \fIrepeat\fR parameter, which has the
 form *\fInum\fR.  This causes \fBRemind\fR to be run \fInum\fR times,
 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
+"Repeated Execution" in the section "CALENDAR MODE" for more
 information.
 .SH REMINDER FILES
 .PP
@@ -397,7 +439,7 @@ These keywords denote the \fItype\fR
 of the reminder.  (\fBSATISFY\fR is more complicated and will be explained
 later.)  A \fBMSG\fR-type reminder normally prints a message to the standard
 output, after passing the \fIbody\fR through a special substitution filter,
-described in the section "The Substitution Filter."  However, if you have
+described in the section "THE SUBSTITUTION FILTER."  However, if you have
 used the \fB\-k\fR command-line option, then \fBMSG\fR-type reminders are
 passed to the appropriate program.  Note that the options \fB\-c\fR,
 \fB\-s\fR, \fB\-p\fR and \fB\-n\fR disable the \fB\-k\fR option.
@@ -415,7 +457,7 @@ The \fBMSF\fR keyword is almost the same as the \fBMSG\fR keyword,
 except that the reminder is formatted to fit into a paragraph-like
 format.  Three system variables control the formatting of \fBMSF\fR-type
 reminders - they are \fB$FirstIndent\fR, \fB$SubsIndent\fR and
-\fB$FormWidth\fR.  They are discussed in the section "System Variables."
+\fB$FormWidth\fR.  They are discussed in the section "SYSTEM VARIABLES."
 The \fBMSF\fR keyword causes the spacing of your reminder to be altered -
 extra spaces are discarded, and two spaces are placed after periods and
 other characters, as specified by the system variables \fB$EndSent\fR and
@@ -448,7 +490,8 @@ of a special reminder depends on the back-end.  For the \fBRem2PS\fR
 back-end, \fBSPECIAL PostScript\fR is equivalent to a \fBPS\fR-type
 reminder, and \fBSPECIAL PSFile\fR is equivalent to a \fBPSFILE\fR-type
 reminder.  The body of a \fBSPECIAL\fR reminder is obviously dependent
-upon the back-end.
+upon the back-end.  A back-end \fImust\fR ignore a \fBSPECIAL\fR that
+it does not recognize.
 .PP
 .B DATE SPECIFICATIONS
 .PP
@@ -475,7 +518,7 @@ characters must be used.  The following are examples of the various parts of a
 JANUARY, feb, March, ApR, may, Aug
 .TP
 .I year:
-1990, 1993, 2030, 95 (interpreted as 1995).  The year can range
+1990, 1993, 2030.  The year can range
 from 1990 to 2075.
 .TP
 .I weekday:
@@ -772,7 +815,7 @@ the initial date, and does not affect the repetition period.
 .B SCANFROM \fRand\fB FROM
 .PP
 The \fBSCANFROM\fR and \fBFROM\fR keywords are for advanced \fBRemind\fR programmers
-only, and will be explained in the section "Details about Trigger Computation"
+only, and will be explained in the section "DETAILS ABOUT TRIGGER COMPUTATION"
 near the end of this manual.  Note that \fBSCANFROM\fR is available only
 in versions of \fBRemind\fR from 03.00.04 up.  \fBFROM\fR is available only
 from 03.01.00 and later.
@@ -784,7 +827,7 @@ It is used in calendar mode and when sorting reminders.  If two reminders
 have the same trigger date and time, then they are sorted by priority.
 If the \fBPRIORITY\fR keyword is not supplied, a default priority of 5000
 is used.  (This default can be changed by adjusting the system variable
-\fB$DefaultPrio\fR.  See the section "System Variables" for more
+\fB$DefaultPrio\fR.  See the section "SYSTEM VARIABLES" for more
 information.)
 .PP
 .B EXPIRY DATES
@@ -817,6 +860,20 @@ As a special case, you can use the \fBTHROUGH\fR keyword instead of
 	REM 1992-11-30 +2 THROUGH 1992-12-04 MSG Jury duty
 .fi
 .PP
+If you have an expiry date via the use of \fBTHROUGH\fR or \fBUNTIL\fR,
+then Remind will \fInever\fR trigger the reminder after the expiry
+date.  For example, if you have this:
+.PP
+.nf
+        OMIT 2021-01-08
+        REM 2021-01-01 THROUGH 2021-01-08 AFTER MSG Test
+.fi
+.PP
+the reminder will not be triggered on 2021-01-08, and nor will it be
+triggered on 2021-01-09; even though the AFTER keyword would normally
+move the 8th's reminder to the 9th, the expiry date of 2021-01-08
+overrides that.
+.PP
 .B THE ONCE KEYWORD
 .PP
 Sometimes, it is necessary to ensure that reminders are run only once
@@ -925,8 +982,13 @@ it terminates the search after the \fBSATISFY\fR iteration limit
 .PP
 Timed reminders are those that have an \fBAT\fR keyword followed
 by a \fItime\fR and optional \fItdelta\fR and \fItrepeat\fR.  The \fItime\fR
-must be specified in 24-hour format, with 0:00 representing midnight,
+may be specified in 24-hour format, with 0:00 representing midnight,
 12:00 representing noon, and 23:59 representing one minute to midnight.
+Alternatively, it may be specified in common "AM/PM" format; in this case,
+the hour must range from 1 to 12.  12:00am represents midnight, 12:00pm
+represents noon, and 11:59pm represents one minute to midnight.  The "am"
+and "pm" portions are case-insensitive and the "m" is optional.
+.PP
 You can use either a colon or a period to separate the hours from the
 minutes.  That is, 13:39 and 13.39 are equivalent.
 .PP
@@ -953,7 +1015,7 @@ The following reminder will be triggered on Thursdays and Fridays,
 but will only be queued on Fridays:
 .PP
 .nf
-	REM Fri ++1 AT 13:00 MSG Lunch at 1pm Friday.
+	REM Fri ++1 AT 1:00PM MSG Lunch at 1pm Friday.
 .fi
 .PP
 The \fItdelta\fR and \fItrepeat\fR have the same form as a \fIrepeat\fR
@@ -1013,7 +1075,7 @@ of timed reminders, and the \fBWARN\fR keyword allows precise control
 over the advance triggering of all types of reminders.
 However, discussion must be deferred until after
 expressions and user-defined functions are explained.  See the subsection
-"Precise Scheduling" further on.
+"PRECISE SCHEDULING" further on.
 .PP
 .B TAG AND DURATION
 .PP
@@ -1033,17 +1095,23 @@ by the hexadecimal representation of the MD5 sum of the REM
 command line.  This lets you give a more-or-less unique identifier
 to each distinct REM command.
 .PP
-The \fBDURATION\fR keyword makes sense only for timed reminders;
-it specifies the duration of an event.  Currently, this is not
-used, but it may be used in future by back-ends or scheduling
-systems built around \fBRemind\fR.  For example, if you have
-a 90-minute meeting starting at 1:00pm, you could use:
+The \fBDURATION\fR keyword makes sense only for timed reminders; it
+specifies the duration of an event.  For example, if you have a
+90-minute meeting starting at 1:00pm, you could use any of the following:
 .PP
 .nf
-	REM 5 March 1999 AT 13:00 DURATION 1:30 MSG Meeting
+	REM 5 March 2021 AT 13:00 DURATION 1:30 MSG Meeting
+	REM 5 March 2021 AT 13:00 DURATION 90 MSG Meeting
+	REM 5 March 2021 AT 1:00pm DURATION 1:30 MSG Meeting
+	REM 5 March 2021 AT 1:00pm DURATION 90 MSG Meeting
 .fi
 .PP
-Note that \fIduration\fR is specified in hours and minutes.
+
+Note that \fIduration\fR is specified either in hours and minutes as a
+\fItime\fR, or in minutes as an \fIinteger\fR.  If you specify a
+duration of 00:00 or 0, then \fBRemind\fR behaves exactly as if no
+\fBDURATION\fR at all had been present.
+
 .PP
 .SH THE SUBSTITUTION FILTER
 .PP
@@ -1269,7 +1337,7 @@ is similar to \fB%3\fR but displays the current time.
 used by the substitution filter,
 but is used to tell \fBRemind\fR which text to include in a calendar
 entry when the \fB\-c\fR, \fB\-s\fR or \fB\-p\fR option is chosen.
-See "Calendar Mode"
+See "CALENDAR MODE"
 .PP
 Notes:
 .TP
@@ -1623,13 +1691,15 @@ in C.
 .RE
 .TP
 .B TIME constants
-12:33, 0:01, 14:15, 16:42, 12.16, 13.00, 1.11
+12:33, 0:01, 14:15, 16:42, 12.16, 13.00, 1.11, 4:30PM, 12:20am
 .PP
 .RS
-Note that \fBTIME\fR constants are written in 24-hour format.  Either the
-period or colon can be used to separate the minutes from the hours.
-However, Remind will consistently output times using only one separator
-character.  (The output separator character is chosen at compile-time.)
+Note that \fBTIME\fR constants may be written in 24-hour format or in
+common "AM/PM" format.  If you use "AM/PM" format, then the hour can
+range from 1 to 12.  Either a period or colon can be used to separate
+the minutes from the hours.  However, Remind will consistently output
+times in 24-hour format using only one separator character.  (The
+output separator character is chosen at compile-time.)
 .RE
 .TP
 .B DATE constants
@@ -1652,11 +1722,12 @@ versions prior to 03.00.02 did not support the '-' date separator.
 .RE
 .TP
 .B DATETIME constants
-\fBDATETIME\fR constants are expressed similarly to \fBDATE\fR constants
-with the addition of an "@HH:MM" part.  For example:
+\fBDATETIME\fR constants are expressed similarly to \fBDATE\fR
+constants with the addition of an "@HH:MM" part, optionally followed
+by "am" or "pm".  For example:
 .PP
 .RS
-\'2008-04-05@23:11', '1999/02/03@14:06', '2001-04-07@08:30'
+\'2008-04-05@23:11', '1999/02/03@14:06', '2001-04-07@08:30', '2020-01-01@3:20pm'
 .PP
 \fBDATETIME\fR values are printed without the quotes.  Notes about date
 and time separator characters for \fBDATE\fR and \fBTIME\fR constants apply
@@ -1709,7 +1780,12 @@ Has several uses.  These are:
 .PP
 \fBINT\fR + \fBTIME\fR or \fBTIME\fR + \fBINT\fR - returns a \fBTIME\fR
 obtained by adding
-\fBINT\fR minutes to the original \fBTIME\fR.
+\fBINT\fR minutes to the original \fBTIME\fR.  The result will always
+range from 00:00 through 23:59.
+.PP
+\fBTIME\fR + \fBTIME\fR treats the second \fBTIME\fR parameter as a
+duration, converting it to an integer number of minutes past midnight,
+and then performs addition as with \fBTIME\fR + \fBINT\fR.
 .PP
 \fBINT\fR + \fBDATE\fR or \fBDATE\fR + \fBINT\fR - returns a \fBDATE\fR
 obtained by adding \fBINT\fR days to the original \fBDATE\fR.
@@ -1718,6 +1794,11 @@ obtained by adding \fBINT\fR days to the original \fBDATE\fR.
 \fBDATETIME\fR obtained by adding \fBINT\fR minutes to the original
 \fBDATETIME\fR.
 .PP
+\fBDATETIME\fR + \fBTIME\fR or \fBTIME\fR + \fBDATETIME\fR
+treats the \fBTIME\fR parameter as a
+duration, converting it to an integer number of minutes past midnight,
+and then performs addition as with \fBDATETIME\fR + \fBINT\fR.
+.PP
 \fBSTRING\fR + \fBSTRING\fR - returns a \fBSTRING\fR that is the
 concatenation of the two original
 \fBSTRING\fRs.
@@ -1751,9 +1832,11 @@ the original \fBDATE\fR.
 earlier
 than the original \fBTIME\fR.
 .PP
-\fBDATETIME\fR - \fBINT\fR - returns a \fBDATETIME\fR that is \fBINT\fR minutes
-earlier
-than the original \fBDATETIME\fR.
+\fBDATETIME\fR - \fBINT\fR - returns a \fBDATETIME\fR that is
+\fBINT\fR minutes earlier than the original \fBDATETIME\fR.
+.PP
+\fBDATETIME\fR - \fBTIME\fR - coerces the \fBTIME\fR to an \fBINT\fR
+and then performs subtraction as above.
 .RE
 .TP
 .B <, <=, >, and >=
@@ -1785,6 +1868,11 @@ otherwise.
 .PP
 .B NOTES
 .PP
+If the result of an addition, subtraction or multiplication operation
+would not fit in a C "int" type, \fBRemind\fR issues a "Number too
+high" error.  Unlike C, integer operations will not simply give the
+wrong answer in case of overflow.
+.PP
 Operators of equal precedence are \fIalways\fR evaluated from left
 to right, except where parentheses dictate otherwise.  This is important,
 because the enhanced "+" operator is not necessarily associative.
@@ -1831,6 +1919,9 @@ variable.  Examples:
 Note that variables themselves have no type.  They take on the type of
 whatever you store in them.
 .PP
+Variables set with SET or on the command-line with \fB\-i\fR\fIvar\fB=\fR\fIexpr\fR
+have global scope.
+.PP
 To delete a variable, use the \fBUNSET\fR command:
 .PP
 \fBUNSET\fR \fIvar\fR [\fIvar\fR...]
@@ -1883,6 +1974,22 @@ This variable can be set only to "/" or "-".  It holds the character
 used to separate portions of a date when \fBRemind\fR prints a DATE or
 DATETIME value.
 .TP
+.B $DefaultColor
+This variable can be set to a string that has the form of three
+space-separated numbers.  Each number must be an integer from 0 to
+255, or all three numbers must be -1.  The default value of
+\fB$DefaultColor\fR is "-1 -1 -1", which suppresses default coloring
+of MSG-type reminders.  If you set \fB$DefaultColor\fR to any other
+value, then all MSG-, MSF- and CAL-type reminders are effectively
+converted into SPECIAL COLOR reminders whose color value is specified
+by \fB$DefaultColor\fR.
+.RS
+.PP
+Unlike other system variables, the value of \fB$DefaultColor\fR is
+\fInot\fR preserved between calendar iterations; rather, it is reset
+to "-1 -1 -1" at the start of each iteration.
+.RE
+.TP
 .B $DefaultPrio
 The default priority assigned to reminders without a \fBPRIORITY\fR
 clause.  You can set this as required to adjust the priorities of
@@ -1941,9 +2048,11 @@ for years greater than 2037.
 .TP
 .B $FormWidth
 The maximum width of each line of text for formatting \fBMSF\fR-type
-reminders.  The default is 72.  If an \fBMSF\fR-type reminder contains
-a word too long to fit in this width, it will not be truncated - the
-width limit will be ignored.
+reminders.  The default is the width of the terminal in columns, minus
+8, but clamped at a minimum of 20 and a maximum of 500.  If standard
+output is not a terminal, then the default is 72.If an \fBMSF\fR-type
+reminder contains a word too long to fit in this width, it will not be
+truncated - the width limit will be ignored.
 .TP
 .B $HushMode (read-only)
 If non-zero, then the \fB\-h\fR option was supplied on the command line.
@@ -1956,6 +2065,14 @@ then \fBONCE\fR directives will be ignored.
 .B $InfDelta (read-only)
 If non-zero, then the \fB\-t\fR option was supplied on the command line.
 .TP
+.B $IntMax (read-only)
+The largest representable \fBINT\fR.  On a machine with 32-bit signed integers
+using twos-complement representation, this will be 2147483647.
+.TP
+.B $IntMin (read-only)
+The smallest representable \fBINT\fR.  On a machine with 32-bit signed integers
+using twos-complement representation, this will be -2147483648.
+.TP
 .B $LatDeg, $LatMin, $LatSec
 These specify the latitude of your location.  \fB$LatDeg\fR can
 range from \-90 to 90, and the others from \-59 to 59.  Northern latitudes
@@ -1972,8 +2089,13 @@ the latitude and longitude system variables.
 These specify the longitude of your location.  \fB$LongDeg\fR can
 range from \-180 to 180.  Western longitudes are positive; eastern
 ones are negative.  Note that all three components should have the
-same sign: All positive for Western longitudes and all negative
-for Eastern longitudes.
+same sign: All positive for Western longitudes and all negative for
+Eastern longitudes.  Note that for historical reasons, the sign for
+longitude is \fIdifferent\fR from the usual convention!  If you find
+the longitude of your location from a search engine, you will most
+likely \fIneed to invert the sign to have it work correctly with
+Remind.\fR
+
 .RS
 .PP
 The latitude and longitude information is required for the functions
@@ -1986,6 +2108,10 @@ start of your reminder scripts.
 The maximum number of iterations for the \fBSATISFY\fR clause
 (described later.)  Must be at least 10.
 .TP
+.B $MaxStringLen
+A limit on the longest string that \fBRemind\fR will allow you
+to create.  The default is 65535.
+.TP
 .B $MinsFromUTC
 The number of minutes between Universal Time Coordinated and local time.  If
 \fB$CalcUTC\fR is non-zero, this is calculated upon startup of \fBRemind\fR.
@@ -2132,6 +2258,23 @@ is supplied, only the date component is used.
 Returns the time of "astronomical twilight" on the specified \fIdate\fR.  If
 \fIdate\fR is omitted, defaults to \fBtoday()\fR.
 .TP
+.B ampm(tq_time [,s_am [,s_pm]])
+Returns a \fBSTRING\fR that is the result of converting \fItime\fR
+(which is either a \fBTIME\R or a \fBDATETIME\fR object) to "AM/PM"
+format.  The optional arguments \fIam\fR and \fIpm\fR are the strings
+to append in the AM and PM case, respectively; they default to "AM"
+and "PM".  The function obeys the system variables $DateSep,
+$TimeSep and $DateTimeSep when formatting its output.  For example:
+.RS
+.PP
+.nf
+        ampm(0:22)                 returns "12:22AM"
+        ampm(17:45, "am", "pm")    returns "5:45pm"
+        ampm('2020-03-14@21:34')   returns "2020-03-14@9:34PM"
+.fi
+.PP
+.RE
+.TP
 .B args(s_fname)
 Returns the number of arguments expected by the user-defined function
 \fIfname\fR, or \-1 if no such user-defined function exists.  Note that
@@ -2378,16 +2521,16 @@ variables are generally case-sensitive; thus, getenv("HOME") is not
 the same as getenv("home").
 .TP
 .B hebdate(i_day, s_hebmon [,idq_yrstart [,i_jahr [,i_aflag]]])
-Support for Hebrew dates - see the section "The Hebrew Calendar"
+Support for Hebrew dates - see the section "THE HEBREW CALENDAR"
 .TP
 .B hebday(dq_date)
-Support for Hebrew dates - see the section "The Hebrew Calendar"
+Support for Hebrew dates - see the section "THE HEBREW CALENDAR"
 .TP
 .B hebmon(dq_date)
-Support for Hebrew dates - see the section "The Hebrew Calendar"
+Support for Hebrew dates - see the section "THE HEBREW CALENDAR"
 .TP
 .B hebyear(dq_date)
-Support for Hebrew dates - see the section "The Hebrew Calendar"
+Support for Hebrew dates - see the section "THE HEBREW CALENDAR"
 .TP
 .B hour(tq_time)
 Returns the hour component of \fItime\fR.
@@ -2791,10 +2934,77 @@ date, returns the integer 0.
 Similar to trigdate(), but returns a \fBDATETIME\fR if the most recent
 triggerable \fBREM\fR command had an \fBAT\fR clause.  If there was no
 \fBAT\fR clause, returns a \fBDATE\fR.  If no trigger could be computed,
-returns the integer 0.
+returns the integer 0.  See "MULTI-DAY EVENTS" for more information.
+.TP
+.B trigeventstart()
+Returns a \fBDATETIME\fR representing the start of the most recent
+triggerable \fBREM\fR command that had an \fBAT\fR clause.  For events
+without a \fBDURATION\fR or that do not span multiple days, returns
+the same as \fBtrigdatetime()\fR.  If the \fBREM\fR command did not
+have an \fBAT\fR clause, returns the integer -1 (and differs from
+\fBtrigdatetime()\fR in this respect.)  See "MULTI-DAY EVENTS" for more
+information.
+.TP
+.B trigeventduration()
+Returns a \fBTIME\fR representing the duration of the most recent
+triggerable \fBREM\fR command that had an \fBAT\fR and a
+\fBDURATION\fR clause.  If the event does not span multiple days,
+returns the same thing as \fBtrigduration()\fR.  If the \fBREM\fR
+command lacked an \fBAT\fR or \fBDURATION\fR clause, returns -1.  See
+"MULTI-DAY EVENTS" for more information.
+.TP
+.B trigback()
+Returns the "back" amount of the last \fBREM\fR or \fBIFTRIG\fR command.
+Returns a positive integer N if the "back" is of the form -N, or a negative
+integer if it is of the form --N.  If there is no "back", then returns 0.
+.TP
+.B trigdelta()
+Returns the "delta" amount of the last \fBREM\fR or \fBIFTRIG\fR command.
+Returns a positive integer N if the "delta" is of the form +N, or a negative
+integer if it is of the form ++N.  If there is no "delta", then returns 0.
+.TP
+.B trigtimedelta()
+Similar to \fBtrigdelta()\fR, but returns the delta used in the
+\fBAT\fR clause of a timed reminder.
+.TP
+.B trigrep()
+Returns the "repeat" amount of the last \fBREM\fR or \fBIFTRIG\fR
+command.  Returns a positive integer N if the "repeat" is of the form
+*N.  If there is no "repeat", then returns 0.
+.TP
+.B trigtimerep()
+Similar to \fBtrigrep()\fR, but returns the repeat used in the \fBAT\fR clause
+of a timed reminder.
+.TP
+.B trigduration()
+Returns (as a TIME type) the \fBDURATION\fR parameter of a timed
+reminder.  If there is no \fBDURATION\fR parameter, returns the
+integer -1.  See "MULTI-DAY EVENTS" for more information.
+.TP
+.B trigpriority()
+Returns the \fBPRIORITY\fR of the last \fBREM\fR or \fBIFTRIG\fR command.
+.TP
+.B triguntil()
+Returns (as a \fBDATE\fR type) the \fBUNTIL\fR parameter of the last
+\fBREM\fR or \fBIFTRIG\fR command.  If there was no \fBUNTIL\fR
+parameter, returns the integer -1.  If there is a \fBTHROUGH\fR parameter,
+that will be returned by \fBtriguntil()\fR since "THROUGH yyyy-mm-dd" is simply
+syntactic sugar for "*1 UNTIL yyyy-mm-dd".
+.TP
+.B trigscanfrom()
+Returns (as a \fBDATE\fR type) the \fBSCANFROM\fR parameter of the last \fBREM\fR
+or \fBIFTRIG\fR command.  If there was no \fBSCANFROM\fR parameter, returns
+the integer -1.  Note that \fBFROM\fR and \fBSCANFROM\fR interact; a reminder that
+has a "FROM yyyy-mm-dd" parameter will act as if it has a \fBSCANFROM\fR parameter
+whose value is the maximum of "yyyy-mm-dd" and today.
+.TP
+.B trigfrom()
+Returns (as a \fBDATE\fR type) the \fBFROM\fR parameter of the last \fBREM\fR or
+\fBIFTRIG\fR command.  If there was no \fBFROM\fR parameter, returns the integer -1.
+
 .TP
 .B trigger(d_date [,t_time [,i_utcflag]]) \fRor\fB trigger(q_datetime [,i_utcflag])
-Returns a string suitable for use in a \fBREM\fR command or a SCANFROM
+Returns a string suitable for use in a \fBREM\fR command or a \fBSCANFROM\fR
 or UNTIL clause, allowing you to calculate trigger dates in advance.
 Note that in earlier versions of \fBRemind\fR, \fBtrigger\fR was
 required to convert a date into something the \fBREM\fR command could
@@ -2827,9 +3037,11 @@ The value for your time zone may differ.
 .RE
 .TP
 .B trigtime()
-Returns the time of the last \fBREM\fR command with an \fBAT\fR clause.
-If the last \fBREM\fR did not have an \fBAT\fR clause, returns the integer
-0.
+Returns the time of the last \fBREM\fR command with an \fBAT\fR
+clause.  If the last \fBREM\fR did not have an \fBAT\fR clause,
+returns the integer 0.  If a \fBREM\fR command has an \fBAT\fR clause
+with a \fBDURATION\fR, then you can compute the end time as
+\fBtrigtime() + trigduration()\fR.
 .TP
 .B trigvalid()
 Returns 1 if the value returned by \fBtrigdate()\fR is valid for the most
@@ -2909,6 +3121,98 @@ Returns a number from 0 to 6 representing the day-of-week of the specified
 .TP
 .B year(dq_date)
 Returns a \fBINT\fR that is the year component of \fIdate\fR.
+
+.SH MULTI-DAY EVENTS
+
+If you specify a start time with \fBAT\fR and a duration with
+\fBDURATION\fR, you can create events that span multiple days.
+Consider these two REM statements:
+.PP
+.nf
+    REM 1991-02-13 AT 16:00 DURATION 72:00 MSG 72-hour event
+    REM 1991-02-13 THROUGH 1991-02-16 AT 16:00 MSG Four events
+.fi
+.PP
+The first statement creates a \fIsingle\fR event that starts on
+13 February 1991 at 16:00 and runs through 16 February 1991 at 16:00
+.PP
+The second statements creates \fIfour separate\fR events that start
+at 16:00 on 13, 14, 15 and 16 February 1991 and have indefinite duration.
+.PP
+Remind handles multi-day events specially.  These are the rules:
+.PP
+On the \fIfirst\fR day of a multi-day event, \fBtrigdatetime()\fR will
+return the starting date and time of the event, and \fBtrigduration()\fR
+will return the original DURATION.
+.PP
+On each \fIsubsequent\fR day of a multi-day event, \fBtrigdatetime()\fR
+will return midnight on the day in question, and \fBtrigduration()\fR
+will return the \fIremaining\fR duration.  Consider this example:
+.PP
+.nf
+    #!/bin/sh
+    remind - 12 feb 1991 '*6' <<'EOF'
+    BANNER %
+    REM 1991-02-13 AT 16:00 DURATION 72:00 SATISFY 1
+    set a trigdatetime()
+    set b trigduration()
+    set c trigeventstart()
+    set d trigeventduration()
+    MSG now=[today()] dt=[a] dur=[b] estart=[c] edur=[d]%
+    EOF
+.fi
+.PP
+The output is:
+.PP
+.nf
+now=1991-02-12 dt=1991-02-13@16:00 dur=72:00 estart=1991-02-13@16:00 edur=72:00
+now=1991-02-13 dt=1991-02-13@16:00 dur=72:00 estart=1991-02-13@16:00 edur=72:00
+now=1991-02-14 dt=1991-02-14@00:00 dur=64:00 estart=1991-02-13@16:00 edur=72:00
+now=1991-02-15 dt=1991-02-15@00:00 dur=40:00 estart=1991-02-13@16:00 edur=72:00
+now=1991-02-16 dt=1991-02-16@00:00 dur=16:00 estart=1991-02-13@16:00 edur=72:00
+now=1991-02-17 dt=1991-02-13@16:00 dur=72:00 estart=-1 edur=-1
+.fi
+.PP
+As you see, the \fBtrigdatetime()\fR and \fBtrigduration()\fR functions
+return the start time and duration of the \fIremaining\fR portion of
+a multi-day event, whereas \fBtrigeventstart\fR and \fBtrigeventduration\fR
+always return the original start and duration of the multi-day event.  Note also
+that the return value for expired reminders is not reliable; the fact
+that \fBtrigeventstart\fR and \fBtrigeventduration\fR return -1 in that case
+is an implementation artifact.
+.PP
+.B SELF-OVERLAPPING EVENTS
+.PP
+A multi-day event has the possibility of "overlapping itself".  When this
+happens, \fBRemind\fR prefers the \fIlater\fR event (only one copy of
+an event is ever triggered for a given date.)  Consider this example:
+.PP
+.nf
+   #!/bin/sh
+   remind - '*5' 10 Feb 1991 <<'EOF'
+
+   BANNER %
+   REM MON at 0:00 DURATION 192:0 MSG [today()] [trigeventstart()] [trigduration()]%
+
+   EOF
+.fi
+.PP
+The output is:
+.PP
+.nf
+   1991-02-10 1991-02-04@00:00 48:00
+   1991-02-11 1991-02-11@00:00 192:00
+   1991-02-12 1991-02-11@00:00 168:00
+   1991-02-13 1991-02-11@00:00 144:00
+   1991-02-14 1991-02-11@00:00 120:00
+.fi
+.PP
+Although the event from 1991-02-04 still has 24 hours left on 1991-02-11,
+the fresh occurrence on 1991-02-11 takes precedences and is the one that
+is triggered.
+.PP
+I do not recommend constructing self-overlapping multi-day events.
+.PP
 .SH EXPRESSION PASTING
 .PP
 An extremely powerful feature of \fBRemind\fR is its macro capability,
@@ -2984,7 +3288,7 @@ three commands are equivalent:
 o
 You cannot use expression-pasting to determine the type (\fBMSG\fR,
 \fBCAL\fR, etc.) of a \fBREM\fR command.  You can paste expressions
-before and after the \fBMSG\fR, etc keywords, but cannot do something like
+before and after the \fBMSG\fR, etc. keywords, but cannot do something like
 this:
 .PP
 .nf
@@ -3080,8 +3384,10 @@ to true if a corresponding \fBREM\fR command would trigger.  Examples:
 .PP
 Note that the \fBIFTRIG\fR command computes a trigger date, which can
 be retrieved with the \fBtrigdate()\fR function.  You can use all of
-the normal trigger components, such as \fBUNTIL\fR, \fIdelta\fR, etc in the
-\fBIFTRIG\fR command.
+the normal trigger components, such as \fBUNTIL\fR, \fIdelta\fR, etc. in the
+\fBIFTRIG\fR command.  However, you cannot use a type specifier such
+as \fBCAL\fR, \fBMSG\fR or \fBSATISFY\fR; attempting to do so
+yields a parse error.
 .PP
 .SH USER-DEFINED FUNCTIONS
 .PP
@@ -3279,12 +3585,12 @@ ends.  Otherwise, \fBRemind\fR computes the next trigger date, and re-tests
 or non-null, or until the iteration limit specified with the \fB\-x\fR
 command-line option is reached.
 .PP
-If \fIexpr\fR is not satisfied, then \fBtrigvalid()\fR is set to 0.
-Otherwise, \fBtrigvalid()\fR is set to 1.  In any event, no error message
-is issued.
+If \fIexpr\fR is not satisfied, then \fBtrigvalid()\fR is set to 0 and
+the error message "Can't compute trigger" is issued.  Otherwise,
+\fBtrigvalid()\fR is set to 1.
 .PP
 This is really useful only if \fIexpr\fR involves a call to the
-\fBtrigdate()\fR function; otherwise, \fIexpr\fR will not change as
+\fBtrigdate()\fR or related functions; otherwise, \fIexpr\fR will not change as
 \fBRemind\fR iterates.
 .PP
 An example of the usefulness of \fBSATISFY\fR:  Suppose you wish to
@@ -3307,6 +3613,12 @@ more complicated sequence:
 	ENDIF
 .fi
 .PP
+You can write the REM statement a little more concisely:
+.PP
+.nf
+	REM 13 SATISFY $Tw == 5
+.fi
+.PP
 Let's see how this works.  The \fBSATISFY\fR clause iterates through
 all the 13ths of successive months, until a trigger date is found whose
 day-of-week is Friday (== 5).  If a valid date was found, we use the
@@ -3347,7 +3659,7 @@ However, when \fBRemind\fR gets around to calculating the trigger
 for Tuesday, 8 September, 1992, the \fBOMIT\fR command will now be
 omitting Labour Day for 1993, and the "Mon AFTER" command
 will not be triggered.  (But see the description of \fBSCANFROM\fR
-in the section "Details about Trigger Computation.")
+in the section "DETAILS ABOUT TRIGGER COMPUTATION.")
 .PP
 It is probably best to stay away from computing \fBOMIT\fR
 trigger dates unless you keep these pitfalls in mind.
@@ -3361,7 +3673,7 @@ follows:
 .fi
 .PP
 Note that for this case only, the \fIexpr\fR after \fBSATISFY\fR
-\fImust\fR be enclosed in braces.  It must come after all the other
+\fImust\fR be enclosed in square brackets.  It must come after all the other
 components of the trigger, and immediately before the \fBMSG\fR,
 \fBRUN\fR, etc. keyword.  If \fIexpr\fR cannot be satisfied, then
 the reminder is not triggered.
@@ -3369,22 +3681,49 @@ the reminder is not triggered.
 Thus, the "Friday the 13th" example can be expressed more compactly as:
 .PP
 .nf
-	REM 13 +2 SATISFY [wkdaynum(trigdate()) == 5] \\
-		MSG Friday the 13th is %b.
+	REM 13 +2 SATISFY [$Tw == 5] MSG Friday the 13th is %b.
 .fi
 .PP
 And you can trigger a reminder on Mondays, Wednesdays and Thursdays
 occurring on odd-numbered days of the month with the following:
 .PP
 .nf
-	REM Mon Wed Thu SATISFY [day(trigdate())%2] \\
-		MSG Here it is!!!
+	REM Mon Wed Thu SATISFY [$Td %2 ] MSG Here it is!!!
 .fi
 .PP
 Note that \fBSATISFY\fR and \fBOMITFUNC\fR can often be used to solve the
 same problem, though in different ways.  Sometimes a \fBSATISFY\fR is cleaner
 and sometimes an \fBOMITFUNC\fR; experiment and use whichever seems clearer.
 .PP
+.SH POSSIBLY-UNCOMPUTABLE TRIGGERS
+.PP
+Occasionally, you may wish to suppress the "Can't compute trigger" warnings
+for reminders for which a trigger date cannot be computed.  For example,
+the following reminder is triggered on a Monday that is not a holiday
+if the following Tuesday is a holiday:
+.PP
+.nf
+        REM Mon SKIP SATISFY [isomitted($T+1)] MSG Work between holidays
+.fi
+.PP
+However, if there are no Mondays after today's date that satisfy the
+condition, Remind will print the "Can't compute trigger" error.  To
+suppress this, use the \fBMAYBE-UNCOMPUTABLE\fR keyword:
+.PP
+.nf
+        REM MAYBE-UNCOMPUTABLE Mon SKIP SATISFY [isomitted($T+1)] MSG Work between holidays
+.fi
+.PP
+It's almost never appropriate to use \fBMAYBE-UNCOMPUTABLE\fR, but it is
+provided for those rare occasions when it makes sense.  If you use
+\fBMAYBE-UNCOMPUTABLE\fR inside the \fBevaltrig()\fR function, then
+untriggerable triggers return -1.  For example:
+.PP
+.nf
+        SET a evaltrig("MAYBE-UNCOMPUTABLE Mon SKIP OMIT Mon")
+.fi
+.PP
+will set a to -1.
 .SH DEBUGGING REMINDER SCRIPTS
 .PP
 Although the command-line \fB\-d\fR option is useful for debugging, it
@@ -3547,7 +3886,7 @@ iterations.  On the next iteration, the commands are skipped, since
 initialized has remained defined.  Thus, time-consuming operations that
 do not depend on the value of \fBtoday()\fR are done only once.
 .PP
-System variables (those whose names start with '$') are automatically
+Most system variables (those whose names start with '$') are automatically
 preserved between calendar iterations.
 .PP
 Note that for efficiency, \fBRemind\fR caches the reminder script
@@ -4136,7 +4475,7 @@ They are used only when piping data from a \fBremind \-p\fR line.
 equivalent of MSG in \fBremind's\fR normal mode of operation.)
 .PP
 The various \fBSPECIAL\fRs recognized are particular for each
-backend; however, there are three \fBSPECIAL\fRs that all backends
+backend; however, there are four \fBSPECIAL\fRs that all backends
 should attempt to support.  They are currently supported by
 \fBRem2PS\fR, \fBtkremind\fR and \fBrem2html\fR.
 .PP
@@ -4199,9 +4538,12 @@ The rest of the line is the text to put in the calendar.
 .PP
 The COLOR special is "doubly special", because in its normal operating
 mode, \fBremind\fR treats a COLOR special just like a MSG-type reminder.
-Also, if you invoke \fBRemind\fR with \fB\-cc\fR..., then it approximates
+Also, if you invoke \fBRemind\fR with \fB\-@\fR[\fIn\fR], then it approximates
 SPECIAL COLOR reminders on your terminal.
 .PP
+See also the documentation of the \fB$DefaultColor\fR system variable
+in the section "SYSTEM VARIABLES".
+.PP
 The \fBWEEK\fR special lets you place annotations such as the week
 number in the calendar.  For example, this would number each Monday
 with the ISO 8601 week number.  The week number is shown like this:
@@ -4354,6 +4696,18 @@ from 7 days before the current date.  This ensures that Labour Day for
 the current year will continue to be triggered until 7 days after it has
 occurred.  This allows you to safely use the AFTER keyword as shown.
 .PP
+As a special case, you can simply use a negative number after SCANFROM;
+a negative numbner \-N is interpreted as N days before today.  Thus,
+the previous example could also be written like this:
+.PP
+.nf
+	# This form of SCANFROM requires Remind 03.01.17 or later.
+	REM Mon 1 Sept SCANFROM \-7 SATISFY 1
+	OMIT [trigdate()]
+
+	REM Mon AFTER MSG Hello
+.fi
+.PP
 In general, use \fBSCANFROM\fR as shown for safe movable \fBOMITs\fR.  The
 amount you should scan back by (7 days in the example above) depends on
 the number of possible consecutive \fBOMITted\fR days that may occur, and

man/tkremind.1

@@ -1,9 +1,9 @@
-.TH TKREMIND 1 "15 February 1998"
+.TH TKREMIND 1 "15 January 2021"
 .UC 4
 .SH NAME
 tkremind \- graphical front-end to Remind calendar program
 .SH SYNOPSIS
-.B tkremind \fR[\fIoptions\fR] [\fIread_file\fR] [\fIwrite_file\fR]
+.B tkremind \fR[\fIoptions\fR] [\fIread_file\fR] [\fIwrite_file\fR] [\fIconfig_file\fR]
 .SH DESCRIPTION
 \fBTkRemind\fR is a graphical front-end to the \fBRemind\fR program.
 It provides a friendly graphical interface which allows you to view
@@ -13,8 +13,10 @@ Although not all of \fBRemind\fR's features are available with \fBTkRemind\fR,
 it creates.  This allows you to learn \fBRemind\fR's syntax and then add
 extra features as you become a more sophisticated \fBRemind\fR programmer.
 
-\fBTkRemind\fR is written in Tcl, and requires version 8.0
-(or higher).  It also requires a \fBwish\fR binary.
+\fBTkRemind\fR is written in Tcl, and requires version 8.5 (or higher)
+as well as the tcllib extension.  It also requires a \fBwish\fR
+binary.  If you are using Tcl/Tk 8.5, you may also need either the Img
+or the tkpng extension to handle PNG images.
 
 .SH OPTIONS
 \fBTkRemind\fR itself has no options.  However, it passes certain options
@@ -41,6 +43,9 @@ include the line:
 .fi
 .PP
 
+\fIConfig_file\fR is the file in which \fBTkRemind\fR stores
+its options.  If it is omitted, it defaults to \fI$HOME/.tkremindrt\fR.
+
 .SH THE CALENDAR WINDOW
 When you start \fBTkRemind\fR, it displays a calendar for the current
 month, with today's date highlighted.  Reminders are filled into each
@@ -51,11 +56,14 @@ notice that the box appears completely full.
 
 .SH NAVIGATING
 To change to the previous or next month, click the \fB<\-\fR
-or \fB\->\fR button, respectively.  To change back to
-the current month, click \fBToday\fR.  To go to a specific month,
-click \fBGo To Date...\fR.  This pops up a dialog box which allows you
-to select a month and enter a year.  Once you've done this, click
-\fBGo\fR to go to the date, or \fBCancel\fR to cancel.
+or \fB\->\fR button, respectively.  You can also use the left/right arrow
+keys or PageUp/PageDown to navigate.
+
+To change back to the current month, click \fBToday\fR or press the
+Home key.  To go to a specific month, click \fBGo To Date...\fR.  This
+pops up a dialog box which allows you to select a month and enter a
+year.  Once you've done this, click \fBGo\fR to go to the date, or
+\fBCancel\fR to cancel.
 
 To exit \fBTkRemind\fR, click \fBQuit\fR.
 
@@ -104,7 +112,7 @@ edit the reminder, thereby gaining access to advanced features of
 \fBRemind\fR's idioms for expressing different types of reminders.
 
 .SH PRINTING
-To print the current month's calender, click \fBPrint...\fR on the
+To print the current month's calendar, click \fBPrint...\fR on the
 main calendar window.  This brings up the print dialog.  Printing
 either produces a PostScript file or sends PostScript to a UNIX command.
 
@@ -125,10 +133,11 @@ Select the appropriate paper size and orientation.  Activate
 be the normal case unless you have many reminders in a particular
 day.  (See the \fBRem2PS\fR documentation.)
 
-Finally, click \fBPrint\fR to print or \fBCancel\fR to cancel.
-Note that during printing, \fBRemind\fR is \fInot\fR called with
-the \fB-itkremind=1\fR option, because it is operated in normal
-PostScript-producing mode.
+Finally, click \fBPrint\fR to print or \fBCancel\fR to cancel.  Note
+that during printing, \fBRemind\fR is called with the
+\fB-itkremind=1\fR option and also an additional \fB-itkprint=1\fR
+option.
+
 
 .SH EDITING REMINDERS
 
@@ -210,7 +219,8 @@ background reminder pops up.
 .TP
 .B Feed popped-up reminder to command's standard input
 If selected, feeds the text of the reminder to the command described
-above.
+above.  The text of the reminder is prefixed by "HH:MM ", where HH:MM
+is the time of the reminder.
 
 .TP
 .B E-mail reminders here if popup not dismissed
@@ -231,6 +241,22 @@ The characters "%d" are replaced with the lined number of the file
 containing the reminder, and "%s" are replaced with the file name.
 Useful strings might be "emacs +%d %s" or "gvim +%d %s"
 
+.TP
+.B Extra Argument for Remind
+This specifies any extra arguments that should be passed to Remind
+when \BTkRemind\fR invokes \fBremind\fR.  Unless you know what
+you are doing, leave this blank.
+
+.TP
+.B Change entry font...
+This button pops up a font selection dialog that lets you change the
+font used to draw calendar items in the calendar boxes.
+
+.TP
+.B Change heading font...
+Similar to Change entry font, but applies to calendar heading
+(the month and day names and the day numbers.)
+
 .PP
 Once you've configured the options the way you like them,
 press \fBApply Options\fR to put them into effect, \fBSave Options\fR
@@ -360,7 +386,7 @@ This line is emitted in response to a \fBSTATUS\fR command.  The number
 .SH AUTHOR
 TkRemind was written by Dianne Skoll <dianne@skoll.ca>
 
-\fBTkRemind\fR is Copyright 1996-2018 by Dianne Skoll.
+\fBTkRemind\fR is Copyright 1996-2020 by Dianne Skoll.
 
 .SH FILES
 

src/Makefile.in

@@ -43,8 +43,10 @@ test: remind
 .c.o:
 	@CC@ -c @CPPFLAGS@ @CFLAGS@ @DEFS@ $(CEXTRA) $(LANGDEF) -I. -I$(srcdir) $<
 
-rem2ps: rem2ps.o dynbuf.o
-	@CC@ @LDFLAGS@ $(LDEXTRA) -o rem2ps rem2ps.o dynbuf.o
+$(REMINDOBJS): $(REMINDHDRS)
+
+rem2ps: rem2ps.o dynbuf.o json.o
+	@CC@ @LDFLAGS@ $(LDEXTRA) -o rem2ps rem2ps.o dynbuf.o json.o -lm
 
 remind: $(REMINDOBJS)
 	@CC@ @LDFLAGS@ $(LDEXTRA) -o remind $(REMINDOBJS) @LIBS@
@@ -72,23 +74,21 @@ clobber:
 	rm -f *.o *~ remind rem2ps test.out core *.bak
 
 depend:
-	gccmakedep @DEFS@ $(REMINDSRCS) rem2ps.c
+	gccmakedep @DEFS@ $(REMINDSRCS) rem2ps.c json.c
 
 # The next targets are not very useful to you.  I use them to build
 # distributions, etc.
 
 # Build a tar file based on all files checked into git.
 distro:
-	ln -s . ../remind-$(VERSION)
-	(cd ..; git ls-files | fgrep -v .gitignore | fgrep -v remind.php) | sed -e 's/^/remind-$(VERSION)\//' | xargs tar -C .. -cvf remind-$(VERSION).tar
+	cd .. && git archive --worktree-attributes --format=tar --prefix=remind-$(VERSION)/ HEAD > src/remind-$(VERSION).tar
 	gzip -f -v -9 remind-$(VERSION).tar
-	rm -f ../remind-$(VERSION)
+	gpg --detach-sign -u dianne@skoll.ca remind-$(VERSION).tar.gz
 
 beta-tgz:
-	ln -s . ../remind-$(VERSION)-BETA-$(BETA)
-	(cd ..; git ls-files | fgrep -v .gitignore | fgrep -v remind.php) | sed -e 's/^/remind-$(VERSION)-BETA-$(BETA)\//' | xargs tar -C .. -cvf remind-$(VERSION)-BETA-$(BETA).tar
+	cd .. && git archive --worktree-attributes --format=tar --prefix=remind-$(VERSION)-BETA-$(BETA)/ HEAD > src/remind-$(VERSION)-BETA-$(BETA).tar
 	gzip -f -v -9 remind-$(VERSION)-BETA-$(BETA).tar
-	rm -f ../remind-$(VERSION)-BETA-$(BETA)
+	gpg --detach-sign -u dianne@skoll.ca remind-$(VERSION)-BETA-$(BETA).tar.gz
 
 #---------------- Stuff after this added by "make depend" -----------------
 

src/custom.h

@@ -6,7 +6,7 @@
 /*  which you can customize.                                   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -146,7 +146,7 @@
 /* VAR_NAME_LEN: The maximum length of variable names.  Don't make it  */
 /*               any less than 12.                                     */
 /*---------------------------------------------------------------------*/
-#define VAR_NAME_LEN 16
+#define VAR_NAME_LEN 64
 
 /*---------------------------------------------------------------------*/
 /* MAX_PRT_LEN: The maximum number of characters to print when         */
@@ -220,6 +220,9 @@
 #define PSBEGIN "# rem2ps begin"
 #define PSEND   "# rem2ps end"
 
+#define PSBEGIN2 "# rem2ps2 begin"
+#define PSEND2   "# rem2ps2 end"
+
 #ifdef BROKEN_PUTC
 #define Putc SafePutc
 #define PutChar SafePutChar

src/custom.h.in

@@ -6,7 +6,7 @@
 /*  which you can customize.                                   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -146,7 +146,7 @@
 /* VAR_NAME_LEN: The maximum length of variable names.  Don't make it  */
 /*               any less than 12.                                     */
 /*---------------------------------------------------------------------*/
-#define VAR_NAME_LEN 16
+#define VAR_NAME_LEN 64
 
 /*---------------------------------------------------------------------*/
 /* MAX_PRT_LEN: The maximum number of characters to print when         */
@@ -220,6 +220,9 @@
 #define PSBEGIN "# rem2ps begin"
 #define PSEND   "# rem2ps end"
 
+#define PSBEGIN2 "# rem2ps2 begin"
+#define PSEND2   "# rem2ps2 end"
+
 #ifdef BROKEN_PUTC
 #define Putc SafePutc
 #define PutChar SafePutChar

src/dorem.c

@@ -7,7 +7,7 @@
 /*  commands.                                                  */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -18,9 +18,9 @@
 
 #include <stdlib.h>
 
+#include "types.h"
 #include "globals.h"
 #include "err.h"
-#include "types.h"
 #include "protos.h"
 #include "expr.h"
 
@@ -34,6 +34,17 @@ static int ParseScanFrom (ParsePtr s, Trigger *t, int type);
 static int ParsePriority (ParsePtr s, Trigger *t);
 static int ParseUntil (ParsePtr s, Trigger *t);
 static int ShouldTriggerBasedOnWarn (Trigger *t, int jul, int *err);
+static int ComputeTrigDuration(TimeTrig *t);
+
+static int
+ComputeTrigDuration(TimeTrig *t)
+{
+    if (t->ttime == NO_TIME ||
+	t->duration == NO_TIME) {
+	return 0;
+    }
+    return (t->ttime + t->duration - 1) / MINUTES_PER_DAY;
+}
 
 /***************************************************************/
 /*                                                             */
@@ -70,6 +81,9 @@ int DoRem(ParsePtr p)
 	PurgeEchoLine("%s\n", CurLine);
 	r=DoSatRemind(&trig, &tim, p);
 	if (r) {
+            if (r == E_CANT_TRIG && trig.maybe_uncomputable) {
+                r = OK;
+            }
 	    FreeTrig(&trig);
 	    if (r == E_EXPIRED) return OK;
 	    return r;
@@ -117,12 +131,15 @@ int DoRem(ParsePtr p)
 	}
     } else {
 	/* Calculate the trigger date */
-	jul = ComputeTrigger(trig.scanfrom, &trig, &r, 1);
+	jul = ComputeTrigger(trig.scanfrom, &trig, &tim, &r, 1);
 	if (r) {
 	    if (PurgeMode) {
 		PurgeEchoLine("%s: %s\n", "#!P! Problem calculating trigger date", ErrMsg[r]);
 		PurgeEchoLine("%s\n", CurLine);
 	    }
+            if (r == E_CANT_TRIG && trig.maybe_uncomputable) {
+                r = OK;
+            }
 	    FreeTrig(&trig);
 	    return r;
 	}
@@ -200,10 +217,15 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
     trig->once = NO_ONCE;
     trig->typ = NO_TYPE;
     trig->scanfrom = NO_DATE;
+    trig->from = NO_DATE;
     trig->priority = DefaultPrio;
     trig->sched[0] = 0;
     trig->warn[0] = 0;
     trig->omitfunc[0] = 0;
+    trig->duration_days = 0;
+    trig->eventstart = NO_TIME;
+    trig->eventduration = NO_TIME;
+    trig->maybe_uncomputable = 0;
     DBufInit(&(trig->tags));
     trig->passthru[0] = 0;
     tim->ttime = NO_TIME;
@@ -245,6 +267,7 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
 	    tim->ttime = (tok.val % MINUTES_PER_DAY);
 	    if (save_in_globals) {
 		LastTriggerTime = tim->ttime;
+		SaveLastTimeTrig(tim);
 	    }
 	    break;
 
@@ -260,6 +283,10 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
 	    trig->m = tok.val;
 	    break;
 
+        case T_MaybeUncomputable:
+            trig->maybe_uncomputable = 1;
+            break;
+
 	case T_Skip:
 	    DBufFree(&buf);
 	    if (trig->skip != NO_SKIP) return E_SKIP_ERR;
@@ -276,6 +303,7 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
 	    DBufFree(&buf);
 	    r=ParseTimeTrig(s, tim, save_in_globals);
 	    if (r) return r;
+	    trig->duration_days = ComputeTrigDuration(tim);
 	    break;
 
 	case T_Scanfrom:
@@ -372,6 +400,10 @@ 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);
+
+	    /* An OMITFUNC counts as a nonconst_expr! */
+	    s->expr_happened = 1;
+	    s->nonconst_expr = 1;
 	    DBufFree(&buf);
 	    break;
 
@@ -396,7 +428,18 @@ int ParseRem(ParsePtr s, Trigger *trig, TimeTrig *tim, int save_in_globals)
 	    switch(tok.type) {
 	    case T_Time:
 	    case T_LongTime:
-		tim->duration = tok.val;
+	    case T_Year:
+	    case T_Day:
+	    case T_Number:
+		if (tok.val != 0) {
+		    tim->duration = tok.val;
+		} else {
+		    tim->duration = NO_TIME;
+		}
+		if (save_in_globals) {
+		    SaveLastTimeTrig(tim);
+		}
+		trig->duration_days = ComputeTrigDuration(tim);
 		break;
 	    default:
 		return E_BAD_TIME;
@@ -468,6 +511,7 @@ static int ParseTimeTrig(ParsePtr s, TimeTrig *tim, int save_in_globals)
 	    /* Save trigger time in global variable */
 	    if (save_in_globals) {
 		LastTriggerTime = tim->ttime;
+		SaveLastTimeTrig(tim);
 	    }
 	    PushToken(DBufValue(&buf), s);
 	    DBufFree(&buf);
@@ -666,6 +710,30 @@ static int ParseScanFrom(ParsePtr s, Trigger *t, int type)
 	    FromJulian(tok.val, &y, &m, &d);
 	    break;
 
+	case T_Back:
+	    DBufFree(&buf);
+	    if (type != SCANFROM_TYPE) {
+		Eprint("%s: %s", word, ErrMsg[E_INCOMPLETE]);
+		return E_INCOMPLETE;
+	    }
+	    if (y != NO_YR) {
+		Eprint("%s: %s", word, ErrMsg[E_YR_TWICE]);
+		return E_YR_TWICE;
+	    }
+	    if (m != NO_MON) {
+		Eprint("%s: %s", word, ErrMsg[E_MON_TWICE]);
+		return E_MON_TWICE;
+	    }
+	    if (d != NO_DAY) {
+		Eprint("%s: %s", word, ErrMsg[E_DAY_TWICE]);
+		return E_DAY_TWICE;
+	    }
+	    if (tok.val < 0) {
+		tok.val = -tok.val;
+	    }
+	    FromJulian(JulianToday - tok.val, &y, &m, &d);
+	    break;
+
 	default:
 	    if (y == NO_YR || m == NO_MON || d == NO_DAY) {
 		Eprint("%s: %s", word, ErrMsg[E_INCOMPLETE]);
@@ -678,9 +746,12 @@ static int ParseScanFrom(ParsePtr s, Trigger *t, int type)
 	    }
 	    t->scanfrom = Julian(y, m, d);
 	    if (type == FROM_TYPE) {
+		t->from = t->scanfrom;
 		if (t->scanfrom < JulianToday) {
 		    t->scanfrom = JulianToday;
 		}
+	    } else {
+		t->from = NO_DATE;
 	    }
 
 	    PushToken(DBufValue(&buf), s);
@@ -706,20 +777,24 @@ int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int jul)
     char const *s;
     Value v;
 
+    int red = -1, green = -1, blue = -1;
+    int is_color = 0;
+
     DBufInit(&buf);
     DBufInit(&calRow);
     DBufInit(&pre_buf);
     if (t->typ == RUN_TYPE && RunDisabled) return E_RUN_DISABLED;
-    if ((t->typ == PASSTHRU_TYPE && strcmp(t->passthru, "COLOR") && strcmp(t->passthru, "COLOUR")) ||
+    if ((t->typ == PASSTHRU_TYPE && StrCmpi(t->passthru, "COLOR") && StrCmpi(t->passthru, "COLOUR")) ||
 	t->typ == CAL_TYPE ||
 	t->typ == PS_TYPE ||
 	t->typ == PSF_TYPE)
 	return OK;
 
     /* Handle COLOR types */
-    if (t->typ == PASSTHRU_TYPE && (!strcmp(t->passthru, "COLOR") || !strcmp(t->passthru, "COLOUR"))) {
+    if (t->typ == PASSTHRU_TYPE && (!StrCmpi(t->passthru, "COLOR") || !StrCmpi(t->passthru, "COLOUR"))) {
 	/* Strip off three tokens */
 	r = ParseToken(p, &buf);
+	sscanf(DBufValue(&buf), "%d", &red);
 	if (!NextMode) {
 	    DBufPuts(&pre_buf, DBufValue(&buf));
 	    DBufPutc(&pre_buf, ' ');
@@ -727,6 +802,7 @@ int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int jul)
 	DBufFree(&buf);
 	if (r) return r;
 	r = ParseToken(p, &buf);
+	sscanf(DBufValue(&buf), "%d", &green);
 	if (!NextMode) {
 	    DBufPuts(&pre_buf, DBufValue(&buf));
 	    DBufPutc(&pre_buf, ' ');
@@ -734,6 +810,7 @@ int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int jul)
 	DBufFree(&buf);
 	if (r) return r;
 	r = ParseToken(p, &buf);
+	sscanf(DBufValue(&buf), "%d", &blue);
 	if (!NextMode) {
 	    DBufPuts(&pre_buf, DBufValue(&buf));
 	    DBufPutc(&pre_buf, ' ');
@@ -817,6 +894,23 @@ int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int jul)
 	return OK;
     }
 
+    /* Correct colors */
+    if (UseVTColors) {
+	if (red == -1 && green == -1 && blue == -1) {
+	    if (DefaultColorR != -1 && DefaultColorG != -1 && DefaultColorB != -1) {
+		red = DefaultColorR;
+		green = DefaultColorG;
+		blue = DefaultColorB;
+	    }
+	}
+	if (red >= 0 && green >= 0 && blue >= 0) {
+	    is_color = 1;
+	    if (red > 255) red = 255;
+	    if (green > 255) green = 255;
+	    if (blue > 255) blue = 255;
+	}
+    }
+
     /* Put the substituted string into the substitution buffer */
 
     /* Don't use msgprefix() on RUN-type reminders */
@@ -827,6 +921,9 @@ int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int jul)
 	    r = EvalExpr(&s, &v, NULL);
 	    if (!r) {
 		if (!DoCoerce(STR_TYPE, &v)) {
+		    if (is_color) {
+			DBufPuts(&buf, Colorize(red, green, blue));
+		    }
 		    if (DBufPuts(&buf, v.v.str) != OK) {
 			DBufFree(&buf);
 			DestroyValue(v);
@@ -838,6 +935,9 @@ int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int jul)
 	}
     }
 
+    if (is_color) {
+	DBufPuts(&buf, Colorize(red, green, blue));
+    }
     if ( (r=DoSubst(p, &buf, t, tim, jul, NORMAL_MODE)) ) return r;
     if (t->typ != RUN_TYPE) {
 	if (UserFuncExists("msgsuffix") == 1) {
@@ -846,6 +946,9 @@ int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int jul)
 	    r = EvalExpr(&s, &v, NULL);
 	    if (!r) {
 		if (!DoCoerce(STR_TYPE, &v)) {
+		    if (is_color) {
+			DBufPuts(&buf, Colorize(red, green, blue));
+		    }
 		    if (DBufPuts(&buf, v.v.str) != OK) {
 			DBufFree(&buf);
 			DestroyValue(v);
@@ -857,6 +960,10 @@ int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int jul)
 	}
     }
 
+    if (is_color) {
+	DBufPuts(&buf, Decolorize(red, green, blue));
+    }
+
     if ((!MsgCommand && t->typ == MSG_TYPE) || t->typ == MSF_TYPE) {
 	if (DBufPutc(&buf, '\n') != OK) {
 	    DBufFree(&buf);
@@ -891,7 +998,7 @@ int TriggerReminder(ParsePtr p, Trigger *t, TimeTrig *tim, int jul)
 	break;
 
     case RUN_TYPE:
-	system(DBufValue(&buf));
+	System(DBufValue(&buf));
 	break;
 
     default: /* Unknown/illegal type? */
@@ -995,21 +1102,35 @@ int ShouldTriggerReminder(Trigger *t, TimeTrig *tim, int jul, int *err)
 /*  Do the "satisfying..." remind calculation.                 */
 /*                                                             */
 /***************************************************************/
-int DoSatRemind(Trigger *trig, TimeTrig *tim, ParsePtr p)
+int DoSatRemind(Trigger *trig, TimeTrig *tt, ParsePtr p)
 {
-    int iter, jul, r;
+    int iter, jul, r, start;
     Value v;
     char const *s;
     char const *t;
 
     t = p->pos;
     iter = 0;
-    jul = trig->scanfrom;
+    start = trig->scanfrom;
     while (iter++ < MaxSatIter) {
-	jul = ComputeTrigger(jul, trig, &r, 1);
+	jul = ComputeTriggerNoAdjustDuration(start, trig, tt, &r, 1, 0);
 	if (r) {
 	    if (r == E_CANT_TRIG) return OK; else return r;
 	}
+	if (jul != start && trig->duration_days) {
+	    jul = ComputeTriggerNoAdjustDuration(start, trig, tt, &r, 1, trig->duration_days);
+	    if (r) {
+		if (r == E_CANT_TRIG) return OK; else return r;
+	    }
+	} else if (jul == start) {
+	    if (tt->ttime != NO_TIME) {
+		trig->eventstart = MINUTES_PER_DAY * r + tt->ttime;
+		if (tt->duration != NO_TIME) {
+		    trig->eventduration = tt->duration;
+		}
+	    }
+	    SaveAllTriggerInfo(trig, tt, jul, tt->ttime, 1);
+	}
 	if (jul == -1) {
 	    return E_EXPIRED;
 	}
@@ -1018,14 +1139,42 @@ int DoSatRemind(Trigger *trig, TimeTrig *tim, ParsePtr p)
 	t = p->pos;
 	if (r) return r;
 	if (v.type != INT_TYPE && v.type != STR_TYPE) return E_BAD_TYPE;
-	if (v.type == INT_TYPE && v.v.val) return OK;
-	if (v.type == STR_TYPE && *v.v.str) return OK;
+	if ((v.type == INT_TYPE && v.v.val) ||
+	    (v.type == STR_TYPE && *v.v.str)) {
+	    AdjustTriggerForDuration(trig->scanfrom, jul, trig, tt, 1);
+	    if (DebugFlag & DB_PRTTRIG) {
+		int y, m, d;
+		FromJulian(LastTriggerDate, &y, &m, &d);
+		fprintf(ErrFp, "%s(%d): Trig(satisfied) = %s, %d %s, %d",
+			FileName, LineNo,
+			DayName[LastTriggerDate % 7],
+			d,
+			MonthName[m],
+			y);
+		if (tt->ttime != NO_TIME) {
+		    fprintf(ErrFp, " AT %02d:%02d",
+			    (tt->ttime / 60),
+			    (tt->ttime % 60));
+		    if (tt->duration != NO_TIME) {
+			fprintf(ErrFp, " DURATION %02d:%02d",
+				(tt->duration / 60),
+				(tt->duration % 60));
+		    }
+		}
+		fprintf(ErrFp, "\n");
+	    }
+	    return OK;
+	}
 	p->pos = s;
-	jul++;
+	if (jul+trig->duration_days < start) {
+	    start++;
+	} else {
+	    start = jul+trig->duration_days+1;
+	}
     }
     p->pos = t;
     LastTrigValid = 0;
-    return OK;
+    return E_CANT_TRIG;
 }
 
 /***************************************************************/
@@ -1119,7 +1268,7 @@ int DoMsgCommand(char const *cmd, char const *msg)
     }
     r = OK;
 
-    system(DBufValue(&execBuffer));
+    System(DBufValue(&execBuffer));
 
 finished:
     DBufFree(&buf);

src/dosubst.c

@@ -6,7 +6,7 @@
 /*  reminders are triggered.                                   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -18,9 +18,9 @@
 
 #include <stdlib.h>
 
+#include "types.h"
 #include "globals.h"
 #include "err.h"
-#include "types.h"
 #include "protos.h"
 
 #define UPPER(c) (islower(c) ? toupper(c) : (c))
@@ -644,10 +644,11 @@ int DoSubst(ParsePtr p, DynamicBuffer *dbuf, Trigger *t, TimeTrig *tt, int jul,
 	    break;
 
 	case '_':
-	    if (mode != CAL_MODE && mode != ADVANCE_MODE && !MsgCommand)
+	    if (PsCal == PSCAL_LEVEL2 || PsCal == PSCAL_LEVEL3 || (mode != CAL_MODE && mode != ADVANCE_MODE && !MsgCommand)) {
 		sprintf(s, "%s", NL);
-	    else
+	    } else {
 		sprintf(s, " ");
+	    }
 	    SHIP_OUT(s);
 	    break;
 
@@ -656,8 +657,13 @@ int DoSubst(ParsePtr p, DynamicBuffer *dbuf, Trigger *t, TimeTrig *tt, int jul,
 	    break;
 
 	case '"':
-	    if (DBufPutc(dbuf, QUOTE_MARKER) != OK) return E_NO_MEM;
-	    has_quote = 1;
+	    if (PsCal != PSCAL_LEVEL3) {
+		if (DBufPutc(dbuf, QUOTE_MARKER) != OK) return E_NO_MEM;
+		has_quote = 1;
+	    } else {
+		if (DBufPutc(dbuf, '%') != OK) return E_NO_MEM;
+		if (DBufPutc(dbuf, c) != OK) return E_NO_MEM;
+	    }
 	    break;
 
 	default:

src/dynbuf.c

@@ -6,7 +6,7 @@
 /*  buffers.                                                   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -150,7 +150,9 @@ int DBufGets(DynamicBuffer *dbuf, FILE *fp)
        we can usually save some unnecessary copying */
 
     *(dbuf->buffer) = 0;
-    fgets(dbuf->buffer, dbuf->allocatedLen, fp);
+    if (fgets(dbuf->buffer, dbuf->allocatedLen, fp) == NULL) {
+	return OK;
+    }
     if (!*(dbuf->buffer)) return OK;
     dbuf->len = strlen(dbuf->buffer);
     l = dbuf->len - 1;
@@ -162,7 +164,7 @@ int DBufGets(DynamicBuffer *dbuf, FILE *fp)
 
     while(busy) {
 	*tmp = 0;
-	fgets(tmp, 256, fp);
+	if (fgets(tmp, 256, fp) == NULL) return OK;
 	if (!*tmp) return OK;
 	l = strlen(tmp) - 1;
 	if (tmp[l] == '\n') {

src/dynbuf.h

@@ -5,7 +5,7 @@
 /*  Declaration of functions for manipulating dynamic buffers  */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/err.h

@@ -5,7 +5,7 @@
 /*  Error definitions.                                         */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -119,6 +119,7 @@
 #define E_NO_MATCHING_REMS  100
 #define E_STRING_TOO_LONG   101
 #define E_TIME_TWICE        102
+#define E_DURATION_NO_AT    103
 #ifdef MK_GLOBALS
 #undef EXTERN
 #define EXTERN
@@ -234,7 +235,8 @@ EXTERN char *ErrMsg[]
     "Can't convert between time zones",
     "No files matching *.rem",
     "String too long",
-    "Time specified twice"
+    "Time specified twice",
+    "Cannot specify DURATION without specifying AT"
 }
 #endif /* MK_GLOBALS */
 ;

src/expr.c

@@ -5,7 +5,7 @@
 /*  This file contains routines to parse and evaluate          */
 /*  expressions.                                               */
 /*                                                             */
-/*  Copyright 1992-2018 by Dianne Skoll                        */
+/*  Copyright 1992-2021 by Dianne Skoll                        */
 /*                                                             */
 /***************************************************************/
 
@@ -13,6 +13,7 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <string.h>
+#include <limits.h>
 
 #include <stdlib.h>
 
@@ -30,7 +31,6 @@
 #define LE 4
 #define NE 5
 
-static char CoerceBuf[512];
 extern int NumFuncs;
 
 static int Multiply(void), Divide(void), Mod(void), Add(void),
@@ -493,6 +493,8 @@ static int MakeValue(char const *s, Value *v, Var *locals, ParsePtr p)
 {
     int len;
     int h, m, r;
+    int ampm = 0;
+    int prev_val;
 
     if (*s == '\"') { /* It's a literal string "*/
 	len = strlen(s)-1;
@@ -519,9 +521,15 @@ static int MakeValue(char const *s, Value *v, Var *locals, ParsePtr p)
 	return OK;
     } else if (isdigit(*s)) { /* It's a number - use len to hold it.*/
 	len = 0;
+        prev_val = 0;
 	while (*s && isdigit(*s)) {
 	    len *= 10;
 	    len += (*s++ - '0');
+            if (len < prev_val) {
+                /* We overflowed */
+                return E_2HIGH;
+            }
+            prev_val = len;
 	}
 	if (*s == ':' || *s == '.' || *s == TimeSep) { /* Must be a literal time */
 	    s++;
@@ -533,7 +541,27 @@ static int MakeValue(char const *s, Value *v, Var *locals, ParsePtr p)
 		m += *s - '0';
 		s++;
 	    }
+	    /* Check for p[m] or a[m] */
+	    if (*s == 'A' || *s == 'a' || *s == 'P' || *s == 'p') {
+		ampm = tolower(*s);
+		s++;
+		if (*s == 'm' || *s == 'M') {
+		    s++;
+		}
+	    }
 	    if (*s || h>23 || m>59) return E_BAD_TIME;
+	    if (ampm) {
+		if (h < 1 || h > 12) return E_BAD_TIME;
+		if (ampm == 'a') {
+		    if (h == 12) {
+			h = 0;
+		    }
+		} else if (ampm == 'p') {
+		    if (h < 12) {
+			h += 12;
+		    }
+		}
+	    }
 	    v->type = TIME_TYPE;
 	    v->v.val = h*60 + m;
 	    return OK;
@@ -578,6 +606,8 @@ int DoCoerce(char type, Value *v)
     int h, d, m, y, i, k;
     char const *s;
 
+    char coerce_buf[128];
+
     /* Do nothing if value is already the right type */
     if (type == v->type) return OK;
 
@@ -605,12 +635,12 @@ int DoCoerce(char type, Value *v)
 	}
     case STR_TYPE:
 	switch(v->type) {
-	case INT_TYPE: sprintf(CoerceBuf, "%d", v->v.val); break;
-	case TIME_TYPE: sprintf(CoerceBuf, "%02d%c%02d", v->v.val / 60,
+	case INT_TYPE: sprintf(coerce_buf, "%d", v->v.val); break;
+	case TIME_TYPE: sprintf(coerce_buf, "%02d%c%02d", v->v.val / 60,
 			       TimeSep, v->v.val % 60);
 	break;
 	case DATE_TYPE: FromJulian(v->v.val, &y, &m, &d);
-	    sprintf(CoerceBuf, "%04d%c%02d%c%02d",
+	    sprintf(coerce_buf, "%04d%c%02d%c%02d",
 		    y, DateSep, m+1, DateSep, d);
 	    break;
 	case DATETIME_TYPE:
@@ -619,13 +649,13 @@ int DoCoerce(char type, Value *v)
 	    k = v->v.val % MINUTES_PER_DAY;
 	    h = k / 60;
 	    i = k % 60;
-	    sprintf(CoerceBuf, "%04d%c%02d%c%02d%c%02d%c%02d",
+	    sprintf(coerce_buf, "%04d%c%02d%c%02d%c%02d%c%02d",
 		    y, DateSep, m+1, DateSep, d, DateTimeSep, h, TimeSep, i);
 	    break;
 	default: return E_CANT_COERCE;
 	}
 	v->type = STR_TYPE;
-	v->v.str = StrDup(CoerceBuf);
+	v->v.str = StrDup(coerce_buf);
 	if (!v->v.str) {
 	    v->type = ERR_TYPE;
 	    return E_NO_MEM;
@@ -700,26 +730,12 @@ int DoCoerce(char type, Value *v)
 	    return OK;
 
 	case STR_TYPE:
-	    h = 0;
-	    m = 0;
 	    s = v->v.str;
-	    if (!isdigit(*s)) return E_CANT_COERCE;
-	    while (isdigit(*s)) {
-		h *= 10;
-		h += *s++ - '0';
-	    }
-	    if (*s != ':' && *s != '.' && *s != TimeSep)
-		return E_CANT_COERCE;
-	    s++;
-	    if (!isdigit(*s)) return E_CANT_COERCE;
-	    while (isdigit(*s)) {
-		m *= 10;
-		m += *s++ - '0';
-	    }
-	    if (*s || h>23 || m>59) return E_CANT_COERCE;
+	    if (ParseLiteralTime(&s, &i)) return E_CANT_COERCE;
+	    if (*s) return E_CANT_COERCE;
 	    v->type = TIME_TYPE;
 	    free(v->v.str);
-	    v->v.val = h*60+m;
+	    v->v.val = i;
 	    return OK;
 
 	default: return E_CANT_COERCE;
@@ -750,35 +766,49 @@ static int Add(void)
 
 /* If both are ints, just add 'em */
     if (v2.type == INT_TYPE && v1.type == INT_TYPE) {
-	v2.v.val += v1.v.val;
-	PushValStack(v2);
+        int old = v1.v.val;
+	v1.v.val += v2.v.val;
+        /* Check for overflow */
+        if (_private_add_overflow(v1.v.val, v2.v.val, old)) {
+            return E_2HIGH;
+        }
+	PushValStack(v1);
 	return OK;
     }
 
 /* If it's a date plus an int, add 'em */
     if ((v1.type == DATE_TYPE && v2.type == INT_TYPE) ||
 	(v1.type == INT_TYPE && v2.type == DATE_TYPE)) {
+        int old = v1.v.val;
 	v1.v.val += v2.v.val;
+        if (_private_add_overflow(v1.v.val, v2.v.val, old)) return E_DATE_OVER;
 	if (v1.v.val < 0) return E_DATE_OVER;
 	v1.type = DATE_TYPE;
 	PushValStack(v1);
 	return OK;
     }
 
-/* If it's a datetime plus an int, add 'em */
-    if ((v1.type == DATETIME_TYPE && v2.type == INT_TYPE) ||
-	(v1.type == INT_TYPE && v2.type == DATETIME_TYPE)) {
+/* If it's a datetime plus an int or a time, add 'em */
+    if ((v1.type == DATETIME_TYPE && (v2.type == INT_TYPE || v2.type == TIME_TYPE)) ||
+	((v1.type == INT_TYPE || v1.type == TIME_TYPE) && v2.type == DATETIME_TYPE)) {
+        int old = v1.v.val;
 	v1.v.val += v2.v.val;
+        if (_private_add_overflow(v1.v.val, v2.v.val, old)) return E_DATE_OVER;
 	if (v1.v.val < 0) return E_DATE_OVER;
 	v1.type = DATETIME_TYPE;
 	PushValStack(v1);
 	return OK;
     }
 
-/* If it's a time plus an int, add 'em mod MINUTES_PER_DAY */
+/* If it's a time plus an int or a time plus a time,
+   add 'em mod MINUTES_PER_DAY */
     if ((v1.type == TIME_TYPE && v2.type == INT_TYPE) ||
-	(v1.type == INT_TYPE && v2.type == TIME_TYPE)) {
-	v1.v.val = (v1.v.val + v2.v.val) % MINUTES_PER_DAY;
+	(v1.type == INT_TYPE && v2.type == TIME_TYPE) ||
+	(v1.type == TIME_TYPE && v2.type == TIME_TYPE)) {
+        int old = v1.v.val;
+	v1.v.val += v2.v.val;
+        if (_private_add_overflow(v1.v.val, v2.v.val, old)) return E_DATE_OVER;
+	v1.v.val = v1.v.val % MINUTES_PER_DAY;
 	if (v1.v.val < 0) v1.v.val += MINUTES_PER_DAY;
 	v1.type = TIME_TYPE;
 	PushValStack(v1);
@@ -798,7 +828,7 @@ static int Add(void)
 	v3.type = STR_TYPE;
 	l1 = strlen(v1.v.str);
 	l2 = strlen(v2.v.str);
-	if (MaxStringLen && (l1 + l2 > MaxStringLen)) {
+	if (MaxStringLen && (l1 + l2 > (size_t) MaxStringLen)) {
 	    DestroyValue(v1); DestroyValue(v2);
 	    return E_STRING_TOO_LONG;
 	}
@@ -808,7 +838,7 @@ static int Add(void)
 	    return E_NO_MEM;
 	}
 	strcpy(v3.v.str, v1.v.str);
-	strcat(v3.v.str, v2.v.str);
+	strcpy(v3.v.str+l1, v2.v.str);
 	DestroyValue(v1); DestroyValue(v2);
 	PushValStack(v3);
 	return OK;
@@ -838,22 +868,29 @@ static int Subtract(void)
 
     /* If they're both INTs, do subtraction */
     if (v1.type == INT_TYPE && v2.type == INT_TYPE) {
+        int old = v1.v.val;
 	v1.v.val -= v2.v.val;
+        if (_private_sub_overflow(v1.v.val, v2.v.val, old)) return E_2HIGH;
 	PushValStack(v1);
 	return OK;
     }
 
     /* If it's a date minus an int, do subtraction, checking for underflow */
     if (v1.type == DATE_TYPE && v2.type == INT_TYPE) {
+        int old = v1.v.val;
 	v1.v.val -= v2.v.val;
+        if (_private_sub_overflow(v1.v.val, v2.v.val, old)) return E_DATE_OVER;
 	if (v1.v.val < 0) return E_DATE_OVER;
 	PushValStack(v1);
 	return OK;
     }
 
-    /* If it's a datetime minus an int, do subtraction, checking for underflow */
-    if (v1.type == DATETIME_TYPE && v2.type == INT_TYPE) {
+    /* If it's a datetime minus an int or a time, do subtraction,
+     * checking for underflow */
+    if (v1.type == DATETIME_TYPE && (v2.type == INT_TYPE || v2.type == TIME_TYPE)) {
+        int old = v1.v.val;
 	v1.v.val -= v2.v.val;
+        if (_private_sub_overflow(v1.v.val, v2.v.val, old)) return E_DATE_OVER;
 	if (v1.v.val < 0) return E_DATE_OVER;
 	PushValStack(v1);
 	return OK;
@@ -871,7 +908,9 @@ static int Subtract(void)
     if ((v1.type == TIME_TYPE && v2.type == TIME_TYPE) ||
 	(v1.type == DATETIME_TYPE && v2.type == DATETIME_TYPE) ||
 	(v1.type == DATE_TYPE && v2.type == DATE_TYPE)) {
+        int old = v1.v.val;
 	v1.v.val -= v2.v.val;
+        if (_private_sub_overflow(v1.v.val, v2.v.val, old)) return E_DATE_OVER;
 	v1.type = INT_TYPE;
 	PushValStack(v1);
 	return OK;
@@ -901,7 +940,11 @@ static int Multiply(void)
     }
 
     if (v1.type == INT_TYPE && v2.type == INT_TYPE) {
+        int old = v1.v.val;
 	v1.v.val *= v2.v.val;
+        if (v2.v.val != 0) {
+            if (_private_div(v1.v.val, v2.v.val) != old) return E_2HIGH;
+        }
 	PushValStack(v1);
 	return OK;
     }
@@ -929,6 +972,10 @@ static int Divide(void)
 
     if (v1.type == INT_TYPE && v2.type == INT_TYPE) {
 	if (v2.v.val == 0) return E_DIV_ZERO;
+        /* This is the only way it can overflow */
+        if (v2.v.val == -1 && v1.v.val == INT_MIN) {
+            return E_2HIGH;
+        }
 	v1.v.val /= v2.v.val;
 	PushValStack(v1);
 	return OK;
@@ -1103,7 +1150,9 @@ static int UnMinus(void)
 {
     Value *v = &ValStack[ValStackPtr-1];
     if (v->type != INT_TYPE) return E_BAD_TYPE;
+    int old = v->v.val;
     v->v.val = -v->v.val;
+    if (_private_unminus_overflow(old, v->v.val)) return E_2HIGH;
     return OK;
 }
 
@@ -1218,6 +1267,48 @@ int CopyValue(Value *dest, const Value *src)
     return OK;
 }
 
+int ParseLiteralTime(char const **s, int *tim)
+{
+    int h=0;
+    int m=0;
+    int ampm=0;
+    if (!isdigit(**s)) return E_BAD_TIME;
+    while(isdigit(**s)) {
+	h *= 10;
+	h += *(*s)++ - '0';
+    }
+    if (**s != ':' && **s != '.' && **s != TimeSep) return E_BAD_TIME;
+    (*s)++;
+    if (!isdigit(**s)) return E_BAD_TIME;
+    while(isdigit(**s)) {
+	m *= 10;
+	m += *(*s)++ - '0';
+    }
+    /* Check for p[m] or a[m] */
+    if (**s == 'A' || **s == 'a' || **s == 'P' || **s == 'p') {
+	ampm = tolower(**s);
+	(*s)++;
+	if (**s == 'm' || **s == 'M') {
+	    (*s)++;
+	}
+    }
+    if (h>23 || m>59) return E_BAD_TIME;
+    if (ampm) {
+	if (h < 1 || h > 12) return E_BAD_TIME;
+	if (ampm == 'a') {
+	    if (h == 12) {
+		h = 0;
+	    }
+	} else if (ampm == 'p') {
+	    if (h < 12) {
+		h += 12;
+	    }
+	}
+    }
+    *tim = h * 60 + m;
+    return OK;
+}
+
 /***************************************************************/
 /*                                                             */
 /*  ParseLiteralDate                                           */
@@ -1229,10 +1320,9 @@ int CopyValue(Value *dest, const Value *src)
 int ParseLiteralDate(char const **s, int *jul, int *tim)
 {
     int y, m, d;
-    int hour, min;
+    int r;
 
     y=0; m=0; d=0;
-    hour=0; min=0;
 
     *tim = NO_TIME;
     if (!isdigit(**s)) return E_BAD_DATE;
@@ -1262,20 +1352,9 @@ int ParseLiteralDate(char const **s, int *jul, int *tim)
     /* Do we have a time part as well? */
     if (**s == ' ' || **s == '@' || **s == 'T' || **s == 't') {
 	(*s)++;
-	while(isdigit(**s)) {
-	    hour *= 10;
-	    hour += *(*s)++ - '0';
-	}
-	if (**s != ':' && **s != '.' && **s != TimeSep) return E_BAD_TIME;
-	(*s)++;
-	while(isdigit(**s)) {
-	    min *= 10;
-	    min += *(*s)++ - '0';
-	}
-	if (hour > 23 || min > 59) return E_BAD_TIME;
-	*tim = hour * 60 + min;
+	r = ParseLiteralTime(s, tim);
+	if (r != OK) return r;
     }
-
     return OK;
 }
 

src/expr.h

@@ -5,7 +5,7 @@
 /*  Contains a few definitions used by expression evaluator.   */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -53,3 +53,12 @@ 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_div(int a, int b);
+extern int _private_add_overflow(int result, int b, int old);
+extern int _private_sub_overflow(int result, int b, int old);
+extern int _private_unminus_overflow(int a, int b);

src/files.c

@@ -7,7 +7,7 @@
 /*  files.                                                     */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -366,12 +366,12 @@ static int CacheFile(char const *fname)
     cl = NULL;
 /* Create a file header */
     cf = NEW(CachedFile);
-    cf->cache = NULL;
     if (!cf) {
 	ShouldCache = 0;
 	FCLOSE(fp);
 	return E_NO_MEM;
     }
+    cf->cache = NULL;
     cf->filename = StrDup(fname);
     if (!cf->filename) {
 	ShouldCache = 0;

src/funcs.c

@@ -6,7 +6,7 @@
 /*  expressions.                                               */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -53,94 +53,108 @@
 #define RetVal (info->retval)
 
 /* Function prototypes */
-static int FCurrent (func_info *);
-static int FNonomitted (func_info *);
-static int FTimepart(func_info *);
-static int FDatepart(func_info *);
-static int FRealCurrent(func_info *);
-static	int	FAbs		(func_info *);
-static	int	FAccess		(func_info *);
-static int     FArgs		(func_info *);
-static	int	FAsc		(func_info *);
-static	int	FBaseyr		(func_info *);
-static	int	FChar		(func_info *);
-static	int	FChoose		(func_info *);
-static	int	FCoerce		(func_info *);
-static	int	FDate		(func_info *);
-static	int	FDateTime	(func_info *);
-static	int	FDay		(func_info *);
-static	int	FDaysinmon	(func_info *);
-static	int	FDefined	(func_info *);
-static	int	FDosubst	(func_info *);
-static	int	FEasterdate	(func_info *);
-static  int     FEvalTrig       (func_info *);
-static int	FFiledate	(func_info *);
-static int	FFiledatetime	(func_info *);
-static	int	FFiledir	(func_info *);
-static	int	FFilename	(func_info *);
-static	int	FGetenv		(func_info *);
-static int     FHebdate	(func_info *);
-static int     FHebday		(func_info *);
-static int     FHebmon		(func_info *);
-static int     FHebyear	(func_info *);
-static	int	FHour		(func_info *);
-static	int	FIif		(func_info *);
-static	int	FIndex		(func_info *);
-static	int	FIsdst		(func_info *);
-static	int	FIsomitted	(func_info *);
-static	int	FSlide  	(func_info *);
-static	int	FLanguage	(func_info *);
-static	int	FMax		(func_info *);
-static	int	FMin		(func_info *);
-static	int	FMinute		(func_info *);
-static	int	FMinsfromutc	(func_info *);
-static	int	FMoondate	(func_info *);
-static	int	FMoondatetime	(func_info *);
-static	int	FMoonphase	(func_info *);
-static	int	FMoontime	(func_info *);
-static	int	FMon		(func_info *);
-static	int	FMonnum		(func_info *);
-static	int	FOrd		(func_info *);
-static	int	FOstype 	(func_info *);
-static	int	FPlural		(func_info *);
-static	int	FSgn		(func_info *);
-static int	FPsmoon		(func_info *);
-static int	FPsshade	(func_info *);
-static	int	FShell		(func_info *);
-static	int	FStrlen		(func_info *);
-static	int	FSubstr		(func_info *);
-static	int	FADawn		(func_info *);
-static	int	FADusk	 	(func_info *);
-static	int	FNDawn		(func_info *);
-static	int	FNDusk	 	(func_info *);
-static	int	FDawn		(func_info *);
-static	int	FDusk	 	(func_info *);
-static	int	FSunset		(func_info *);
-static	int	FSunrise	(func_info *);
-static	int	FTime		(func_info *);
-static	int	FTrigdate	(func_info *);
-static	int	FTrigdatetime	(func_info *);
-static	int	FTrigtime	(func_info *);
-static	int	FTrigvalid	(func_info *);
-static	int	FTypeof		(func_info *);
-static	int	FUpper		(func_info *);
-static	int	FValue		(func_info *);
-static	int	FVersion	(func_info *);
-static	int	FWkday		(func_info *);
-static	int	FWkdaynum	(func_info *);
-static	int	FYear		(func_info *);
-static int	FIsleap         (func_info *);
-static int	FLower          (func_info *);
-static int	FNow            (func_info *);
-static int	FRealnow            (func_info *);
-static int	FRealtoday      (func_info *);
-static int	FToday          (func_info *);
-static int	FTrigger        (func_info *);
-static int      FTzconvert      (func_info *);
-static int      FWeekno         (func_info *);
-static int	CheckArgs       (BuiltinFunc *f, int nargs);
-static int	CleanUpAfterFunc (func_info *);
-static int	SunStuff	(int rise, double cosz, int jul);
+static int FADawn          (func_info *);
+static int FADusk          (func_info *);
+static int FAbs            (func_info *);
+static int FAccess         (func_info *);
+static int FAmpm           (func_info *);
+static int FArgs           (func_info *);
+static int FAsc            (func_info *);
+static int FBaseyr         (func_info *);
+static int FChar           (func_info *);
+static int FChoose         (func_info *);
+static int FCoerce         (func_info *);
+static int FCurrent        (func_info *);
+static int FDate           (func_info *);
+static int FDateTime       (func_info *);
+static int FDatepart       (func_info *);
+static int FDawn           (func_info *);
+static int FDay            (func_info *);
+static int FDaysinmon      (func_info *);
+static int FDefined        (func_info *);
+static int FDosubst        (func_info *);
+static int FDusk           (func_info *);
+static int FEasterdate     (func_info *);
+static int FEvalTrig       (func_info *);
+static int FFiledate       (func_info *);
+static int FFiledatetime   (func_info *);
+static int FFiledir        (func_info *);
+static int FFilename       (func_info *);
+static int FGetenv         (func_info *);
+static int FHebdate        (func_info *);
+static int FHebday         (func_info *);
+static int FHebmon         (func_info *);
+static int FHebyear        (func_info *);
+static int FHour           (func_info *);
+static int FIif            (func_info *);
+static int FIndex          (func_info *);
+static int FIsdst          (func_info *);
+static int FIsleap         (func_info *);
+static int FIsomitted      (func_info *);
+static int FLanguage       (func_info *);
+static int FLower          (func_info *);
+static int FMax            (func_info *);
+static int FMin            (func_info *);
+static int FMinsfromutc    (func_info *);
+static int FMinute         (func_info *);
+static int FMon            (func_info *);
+static int FMonnum         (func_info *);
+static int FMoondate       (func_info *);
+static int FMoondatetime   (func_info *);
+static int FMoonphase      (func_info *);
+static int FMoontime       (func_info *);
+static int FNDawn          (func_info *);
+static int FNDusk          (func_info *);
+static int FNonomitted     (func_info *);
+static int FNow            (func_info *);
+static int FOrd            (func_info *);
+static int FOstype         (func_info *);
+static int FPlural         (func_info *);
+static int FPsmoon         (func_info *);
+static int FPsshade        (func_info *);
+static int FRealCurrent    (func_info *);
+static int FRealnow        (func_info *);
+static int FRealtoday      (func_info *);
+static int FSgn            (func_info *);
+static int FShell          (func_info *);
+static int FSlide          (func_info *);
+static int FStrlen         (func_info *);
+static int FSubstr         (func_info *);
+static int FSunrise        (func_info *);
+static int FSunset         (func_info *);
+static int FTime           (func_info *);
+static int FTimepart       (func_info *);
+static int FToday          (func_info *);
+static int FTrigback       (func_info *);
+static int FTrigdate       (func_info *);
+static int FTrigdatetime   (func_info *);
+static int FTrigdelta      (func_info *);
+static int FTrigduration   (func_info *);
+static int FTrigeventduration(func_info *);
+static int FTrigeventstart (func_info *);
+static int FTrigfrom       (func_info *);
+static int FTrigger        (func_info *);
+static int FTrigpriority   (func_info *);
+static int FTrigrep        (func_info *);
+static int FTrigscanfrom   (func_info *);
+static int FTrigtime       (func_info *);
+static int FTrigtimedelta  (func_info *);
+static int FTrigtimerep    (func_info *);
+static int FTriguntil      (func_info *);
+static int FTrigvalid      (func_info *);
+static int FTypeof         (func_info *);
+static int FTzconvert      (func_info *);
+static int FUpper          (func_info *);
+static int FValue          (func_info *);
+static int FVersion        (func_info *);
+static int FWeekno         (func_info *);
+static int FWkday          (func_info *);
+static int FWkdaynum       (func_info *);
+static int FYear           (func_info *);
+
+static int CleanUpAfterFunc (func_info *);
+static int CheckArgs       (BuiltinFunc *f, int nargs);
+static int SunStuff        (int rise, double cosz, int jul);
 
 /* "Overload" the struct Operator definition */
 #define NO_MAX 127
@@ -193,6 +207,7 @@ BuiltinFunc Func[] = {
     {   "access",       2,      2,      0,          FAccess },
     {   "adawn",        0,      1,      0,          FADawn},
     {   "adusk",        0,      1,      0,          FADusk},
+    {   "ampm",         1,      3,      1,          FAmpm   },
     {   "args",         1,      1,      0,          FArgs   },
     {   "asc",          1,      1,      1,          FAsc    },
     {   "baseyr",       0,      0,      1,          FBaseyr },
@@ -260,10 +275,22 @@ BuiltinFunc Func[] = {
     {   "time",         2,      2,      1,          FTime   },
     {   "timepart",     1,      1,      1,          FTimepart },
     {   "today",        0,      0,      0,          FToday  },
+    {   "trigback",     0,      0,      0,          FTrigback },
     {   "trigdate",     0,      0,      0,          FTrigdate },
     {   "trigdatetime", 0,      0,      0,          FTrigdatetime },
+    {   "trigdelta",    0,      0,      0,          FTrigdelta },
+    {   "trigduration", 0,      0,      0,          FTrigduration },
+    {   "trigeventduration", 0, 0,      0,          FTrigeventduration },
+    {   "trigeventstart", 0,    0,      0,          FTrigeventstart },
+    {   "trigfrom",     0,      0,      0,          FTrigfrom },
     {   "trigger",      1,      3,      0,          FTrigger },
+    {   "trigpriority", 0,      0,      0,          FTrigpriority },
+    {   "trigrep",      0,      0,      0,          FTrigrep },
+    {   "trigscanfrom", 0,      0,      0,          FTrigscanfrom },
     {   "trigtime",     0,      0,      0,          FTrigtime },
+    {   "trigtimedelta",0,      0,      0,          FTrigtimedelta },
+    {   "trigtimerep",  0,      0,      0,          FTrigtimerep },
+    {   "triguntil",    0,      0,      0,          FTriguntil },
     {   "trigvalid",    0,      0,      0,          FTrigvalid },
     {   "typeof",       1,      1,      1,          FTypeof },
     {   "tzconvert",    2,      3,      0,          FTzconvert },
@@ -839,12 +866,14 @@ static int FTime(func_info *info)
 /***************************************************************/
 static int FAbs(func_info *info)
 {
-    int v;
+    volatile int v;
 
     ASSERT_TYPE(0, INT_TYPE);
     v = ARGV(0);
     RetVal.type = INT_TYPE;
     RETVAL = (v < 0) ? (-v) : v;
+    v = RETVAL;
+    if (v < 0) return E_2HIGH;
     return OK;
 }
 
@@ -861,6 +890,76 @@ static int FSgn(func_info *info)
     return OK;
 }
 
+/***************************************************************/
+/*                                                             */
+/*  FAmpm - return a time as a string with "AM" or "PM" suffix */
+/*                                                             */
+/***************************************************************/
+static int FAmpm(func_info *info)
+{
+    int h, m;
+    int yr=0, mo=0, da=0;
+
+    char const *am = "AM";
+    char const *pm = "PM";
+    char const *ampm = NULL;
+
+    char outbuf[128];
+
+    if (ARG(0).type != DATETIME_TYPE && ARG(0).type != TIME_TYPE) {
+	return E_BAD_TYPE;
+    }
+    if (HASDATE(ARG(0))) {
+	FromJulian(DATEPART(ARG(0)), &yr, &mo, &da);
+    }
+    if (Nargs >= 2) {
+	ASSERT_TYPE(1, STR_TYPE);
+	am = ARGSTR(1);
+	if (Nargs >= 3) {
+	    ASSERT_TYPE(2, STR_TYPE);
+	    pm = ARGSTR(2);
+	}
+    }
+    h = TIMEPART(ARG(0)) / 60;
+    m = TIMEPART(ARG(0)) % 60;
+    if (h <= 11) {
+	/* AM */
+	if (h == 0) {
+	    if (ARG(0).type == DATETIME_TYPE) {
+		snprintf(outbuf, sizeof(outbuf), "%04d%c%02d%c%02d%c12%c%02d", yr, DateSep, mo+1, DateSep, da, DateTimeSep, TimeSep, m);
+	    } else {
+		snprintf(outbuf, sizeof(outbuf), "12%c%02d", TimeSep, m);
+	    }
+	} else {
+	    if (ARG(0).type == DATETIME_TYPE) {
+		snprintf(outbuf, sizeof(outbuf), "%04d%c%02d%c%02d%c%d%c%02d", yr, DateSep, mo+1, DateSep, da, DateTimeSep, h, TimeSep, m);
+	    } else {
+		snprintf(outbuf, sizeof(outbuf), "%d%c%02d", h, TimeSep, m);
+	    }
+	}
+	ampm = am;
+    } else {
+	if (h > 12) {
+	    h -= 12;
+	}
+	if (ARG(0).type == DATETIME_TYPE) {
+	    snprintf(outbuf, sizeof(outbuf), "%04d%c%02d%c%02d%c%d%c%02d", yr, DateSep, mo+1, DateSep, da, DateTimeSep, h, TimeSep, m);
+	} else {
+	    snprintf(outbuf, sizeof(outbuf), "%d%c%02d", h, TimeSep, m);
+	}
+	ampm = pm;
+    }
+    RetVal.type = STR_TYPE;
+    RetVal.v.str = malloc(strlen(outbuf) + strlen(ampm) + 1);
+    if (!RetVal.v.str) {
+	RetVal.type = ERR_TYPE;
+	return E_NO_MEM;
+    }
+    strcpy(RetVal.v.str, outbuf);
+    strcat(RetVal.v.str, ampm);
+    return OK;
+}
+
 /***************************************************************/
 /*                                                             */
 /*  FOrd - returns a string containing ordinal number.         */
@@ -1137,6 +1236,120 @@ static int FTrigdate(func_info *info)
     return OK;
 }
 
+static int FTrigback(func_info *info)
+{
+    RetVal.type = INT_TYPE;
+    RETVAL = LastTrigger.back;
+    return OK;
+}
+
+static int FTrigdelta(func_info *info)
+{
+    RetVal.type = INT_TYPE;
+    RETVAL = LastTrigger.delta;
+    return OK;
+}
+
+static int FTrigtimedelta(func_info *info)
+{
+    RetVal.type = INT_TYPE;
+    RETVAL = LastTimeTrig.delta;
+    return OK;
+}
+
+static int FTrigtimerep(func_info *info)
+{
+    RetVal.type = INT_TYPE;
+    RETVAL = LastTimeTrig.rep;
+    return OK;
+}
+
+static int FTrigeventduration(func_info *info)
+{
+    if (LastTrigger.eventduration == NO_TIME) {
+	RetVal.type = INT_TYPE;
+	RETVAL = -1;
+    } else {
+	RetVal.type = TIME_TYPE;
+	RETVAL = LastTrigger.eventduration;
+    }
+    return OK;
+}
+
+static int FTrigeventstart(func_info *info)
+{
+    if (LastTrigger.eventstart == NO_TIME) {
+	RetVal.type = INT_TYPE;
+	RETVAL = -1;
+    } else {
+	RetVal.type = DATETIME_TYPE;
+	RETVAL = LastTrigger.eventstart;
+    }
+    return OK;
+}
+
+static int FTrigduration(func_info *info)
+{
+    if (LastTimeTrig.duration == NO_TIME) {
+	RetVal.type = INT_TYPE;
+	RETVAL = -1;
+    } else {
+	RetVal.type = TIME_TYPE;
+	RETVAL = LastTimeTrig.duration;
+    }
+    return OK;
+}
+
+static int FTrigrep(func_info *info)
+{
+    RetVal.type = INT_TYPE;
+    RETVAL = LastTrigger.rep;
+    return OK;
+}
+
+static int FTrigpriority(func_info *info)
+{
+    RetVal.type = INT_TYPE;
+    RETVAL = LastTrigger.priority;
+    return OK;
+}
+
+static int FTriguntil(func_info *info)
+{
+    if (LastTrigger.until == NO_UNTIL) {
+	RetVal.type = INT_TYPE;
+	RETVAL = -1;
+    } else {
+	RetVal.type = DATE_TYPE;
+	RETVAL = LastTrigger.until;
+    }
+    return OK;
+}
+
+static int FTrigscanfrom(func_info *info)
+{
+    if (LastTrigger.scanfrom == NO_DATE) {
+	RetVal.type = INT_TYPE;
+	RETVAL = -1;
+    } else {
+	RetVal.type = DATE_TYPE;
+	RETVAL = LastTrigger.scanfrom;
+    }
+    return OK;
+}
+
+static int FTrigfrom(func_info *info)
+{
+    if (LastTrigger.from == NO_DATE) {
+	RetVal.type = INT_TYPE;
+	RETVAL = -1;
+    } else {
+	RetVal.type = DATE_TYPE;
+	RETVAL = LastTrigger.from;
+    }
+    return OK;
+}
+
 static int FTrigvalid(func_info *info)
 {
     RetVal.type = INT_TYPE;
@@ -1880,7 +2093,7 @@ static int SunStuff(int rise, double cosz, int jul)
 	+ (double) LongSec / 3600.0;
 
     latitude = DEGRAD * ((double) LatDeg + (double) LatMin / 60.0
-		         + (double) LatSec / 3600.0);
+			 + (double) LatSec / 3600.0);
 
 
     FromJulian(jul, &year, &mon, &day);
@@ -1919,10 +2132,10 @@ static int SunStuff(int rise, double cosz, int jul)
 /* Sine of sun's declination */
     sinDelta = 0.39782 * sin(DEGRAD*L);
     cosDelta = sqrt(1 - sinDelta*sinDelta);
-    
+
 /* Cosine of sun's local hour angle */
     cosH = (cosz - sinDelta * sin(latitude)) / (cosDelta * cos(latitude));
-    
+
     if (cosH < -1.0) { /* Summer -- permanent daylight */
 	if (rise) return NO_TIME;
 	else      return -NO_TIME;
@@ -1940,9 +2153,9 @@ static int SunStuff(int rise, double cosz, int jul)
 
     if (T >= 24.0) T -= 24.0;
     else if (T < 0.0) T+= 24.0;
-    
+
     UT = T + longdeg / 15.0;
-    
+
 
     local = UT + (double) mins / 60.0;
     if (local < 0.0) local += 24.0;
@@ -1953,7 +2166,7 @@ static int SunStuff(int rise, double cosz, int jul)
 
     hours = (int) local;
     mins = (int) ((local - hours) * 60.0);
-    
+
     /* Sometimes, we get roundoff error.  Check for "reasonableness" of
        answer. */
     if (rise) {
@@ -2422,16 +2635,16 @@ static int tz_set_tz(char const *tz)
        unsetenv("TZ");
        r = 0;
     } else {
-        r = setenv("TZ", tz, 1);
+	r = setenv("TZ", tz, 1);
     }
     tzset();
     return r;
 }
 
 static int tz_convert(int year, int month, int day,
-                      int hour, int minute,
-                      char const *src_tz, char const *tgt_tz,
-                      struct tm *tm)
+		      int hour, int minute,
+		      char const *src_tz, char const *tgt_tz,
+		      struct tm *tm)
 {
     int r;
     time_t t;
@@ -2452,28 +2665,28 @@ static int tz_convert(int year, int month, int day,
     /* backup old TZ env var */
     old_tz = getenv("TZ");
     if (tgt_tz == NULL) {
-        tgt_tz = old_tz;
+	tgt_tz = old_tz;
     }
 
     /* set source TZ */
     r = tz_set_tz(src_tz);
     if (r == -1) {
-        return -1;
+	return -1;
     }
 
     /* create timestamp in UTC */
     t = mktime(tm);
 
     if (t == (time_t) -1) {
-        tz_set_tz(old_tz);
-        return -1;
+	tz_set_tz(old_tz);
+	return -1;
     }
 
     /* set target TZ */
     r = tz_set_tz(tgt_tz);
     if (r == -1) {
-        tz_set_tz(old_tz);
-        return -1;
+	tz_set_tz(old_tz);
+	return -1;
     }
 
     /* convert to target TZ */
@@ -2484,9 +2697,9 @@ static int tz_convert(int year, int month, int day,
 
     /* return result */
     if (res == NULL) {
-        return -1;
+	return -1;
     } else {
-        return 1;
+	return 1;
     }
 }
 
@@ -2557,6 +2770,7 @@ FSlide(func_info *info)
     } else {
 	while(amt) {
 	    d--;
+	    if (d < 0) return E_DATE_OVER;
 	    r = IsOmitted(d, localomit, NULL,&omit);
 	    if (r) return r;
 	    if (!omit) amt++;
@@ -2697,13 +2911,17 @@ FEvalTrig(func_info *info)
 	return E_PARSE_ERR;
     }
     if (scanfrom == NO_DATE) {
-	jul = ComputeTrigger(trig.scanfrom, &trig, &r, 0);
+	jul = ComputeTrigger(trig.scanfrom, &trig, &tim, &r, 0);
     } else {
 	/* Hokey... */
 	if (trig.scanfrom != JulianToday) {
 	    Eprint("Warning: SCANFROM is ignored in two-argument form of evaltrig()");
 	}
-	jul = ComputeTrigger(scanfrom, &trig, &r, 0);
+	jul = ComputeTrigger(scanfrom, &trig, &tim, &r, 0);
+    }
+    if (r == E_CANT_TRIG && trig.maybe_uncomputable) {
+        r = 0;
+        jul = -1;
     }
     FreeTrig(&trig);
     if (r) return r;

src/globals.c

@@ -8,7 +8,7 @@
 /*  globals.h and err.h                                        */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/globals.h

@@ -7,7 +7,7 @@
 /*  MK_GLOBALS.  Also contains useful macro definitions.       */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -46,7 +46,7 @@ EXTERN  INIT(   int     DoPrefixLineNo, 0);
 EXTERN	INIT(	int	MondayFirst, 0);
 EXTERN	INIT(	int	Iterations, 1);
 EXTERN  INIT(   int     PsCal, 0);
-EXTERN  INIT(   int     CalWidth, 80);
+EXTERN  INIT(   int     CalWidth, -1);
 EXTERN  INIT(   int     CalWeeks, 0);
 EXTERN  INIT(   int     CalMonths, 0);
 EXTERN  INIT(	int 	Hush, 0);
@@ -73,6 +73,9 @@ EXTERN  INIT(   int     Daemon, 0);
 EXTERN  INIT(   char    DateSep, DATESEP);
 EXTERN  INIT(   char    TimeSep, TIMESEP);
 EXTERN  INIT(   char    DateTimeSep, DATETIMESEP);
+EXTERN  INIT(   int     DefaultColorR, -1);
+EXTERN  INIT(   int     DefaultColorB, -1);
+EXTERN  INIT(   int     DefaultColorG, -1);
 EXTERN  INIT(   int     SynthesizeTags, 0);
 EXTERN  INIT(   int     ScFormat, SC_AMPM);
 EXTERN  INIT(   int     MaxSatIter, 150);
@@ -85,8 +88,10 @@ EXTERN  FILE *ErrFp;
 EXTERN  INIT(   FILE    *PurgeFP,  NULL);
 EXTERN  INIT(   int     NumIfs,    0);
 EXTERN  INIT(   unsigned int IfFlags,   0);
-EXTERN  INIT(   int     LastTriggerDate, 0);
 EXTERN  INIT(   int     LastTrigValid, 0);
+EXTERN  Trigger  LastTrigger;
+EXTERN  TimeTrig LastTimeTrig;
+EXTERN  INIT(   int     LastTriggerDate, 0);
 EXTERN  INIT(   int     LastTriggerTime, 0);
 EXTERN  INIT(   int     ShouldCache, 0);
 EXTERN  char const   *CurLine;
@@ -98,6 +103,9 @@ EXTERN  INIT(   int     CalPad, 1);
 EXTERN  INIT(   int     UseVTChars, 0);
 EXTERN  INIT(   int     UseUTF8Chars, 0);
 EXTERN  INIT(   int     UseVTColors, 0);
+EXTERN  INIT(   int     Use256Colors, 0);
+EXTERN  INIT(   int     UseTrueColors, 0);
+EXTERN  INIT(   int     TerminalBackground, TERMINAL_BACKGROUND_UNKNOWN);
 
 /* Latitude and longitude */
 EXTERN  INIT(	int	  LatDeg, LAT_DEG);

src/hbcal.c

@@ -5,7 +5,7 @@
 /*  Support for the Hebrew calendar                            */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /*  Derived from code written by Amos Shapir in 1978; revised  */
 /*  1985.                                                      */
@@ -138,8 +138,8 @@ int DaysInHebYear(int y)
 /***************************************************************/
 char const *DaysInHebMonths(int ylen)
 {
-    static char monlen[13] =
-    {30, 29, 30, 29, 30, 0, 29, 30, 29, 30, 29, 30, 29};
+    static char monlen[14] =
+	{30, 29, 30, 29, 30, 0, 29, 30, 29, 30, 29, 30, 29, 29};
 
 
     if (ylen > 355) {

src/init.c

@@ -7,7 +7,7 @@
 /*  in normal mode.                                            */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -23,6 +23,7 @@
 #include <sys/types.h>
 #include <pwd.h>
 #include <unistd.h>
+#include <sys/ioctl.h>
 
 #include "types.h"
 #include "protos.h"
@@ -38,6 +39,7 @@
  *             simple calendar format.
  *  -r       = Disallow RUN mode
  *  -c[n]    = Produce a calendar for n months (default = 1)
+ *  -@[n,m]  = Colorize n=0 VT100 n=1 85 n=2 True m=0 dark terminal m=1 light
  *  -w[n,n,n] = Specify output device width, padding and spacing
  *  -s[n]    = Produce calendar in "simple calendar" format
  *  -p[n]    = Produce calendar in format compatible with rem2ps
@@ -135,7 +137,7 @@ void InitRemind(int argc, char const *argv[])
     int InvokedAsRem = 0;
     char const *s;
     int weeks;
-
+    int x;
     int jul;
 
 #if defined(__APPLE__)
@@ -146,6 +148,17 @@ void InitRemind(int argc, char const *argv[])
 
     jul = NO_DATE;
 
+    /* If stdout is a terminal, initialize $FormWidth to terminal width-8,
+       but clamp to [20, 500] */
+    if (isatty(STDOUT_FILENO)) {
+	struct winsize w;
+	if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &w) == 0) {
+	    FormWidth = w.ws_col - 8;
+	    if (FormWidth < 20) FormWidth = 20;
+	    if (FormWidth > 500) FormWidth = 500;
+	}
+    }
+    
     /* Initialize global dynamic buffers */
     DBufInit(&Banner);
     DBufInit(&LineBuffer);
@@ -190,6 +203,7 @@ void InitRemind(int argc, char const *argv[])
 
     /* Parse the command-line options */
     i = 1;
+
     while (i < argc) {
 	arg = argv[i];
 	if (*arg != '-') break; /* Exit the loop if it's not an option */
@@ -204,6 +218,27 @@ void InitRemind(int argc, char const *argv[])
 	while (*arg) {
 	    switch(*arg++) {
 
+	    case '@':
+		UseVTColors = 1;
+		if (*arg) {
+		    PARSENUM(x, arg);
+		    if (x == 1) {
+			Use256Colors = 1;
+		    } else if (x == 2) {
+			UseTrueColors = 1;
+		    }
+		}
+		if (*arg == ',') {
+		    arg++;
+		    PARSENUM(x, arg);
+		    if (x == 0) {
+			TerminalBackground = TERMINAL_BACKGROUND_DARK;
+		    } else if (x == 1) {
+			TerminalBackground = TERMINAL_BACKGROUND_LIGHT;
+		    }
+		}
+		break;
+
 	    case 'j':
 	    case 'J':
 		PurgeMode = 1;
@@ -400,9 +435,21 @@ void InitRemind(int argc, char const *argv[])
 	    case 'p':
 	    case 'P':
 		DoSimpleCalendar = 1;
-		PsCal = 1;
-		if (*arg == 'a' || *arg == 'A') {
-		    DoSimpleCalDelta = 1;
+		PsCal = PSCAL_LEVEL1;
+		while (*arg == 'a' || *arg == 'A' ||
+		       *arg == 'p' || *arg == 'P') {
+		    if (*arg == 'a' || *arg == 'A') {
+			DoSimpleCalDelta = 1;
+		    } else if (*arg == 'p' || *arg == 'P') {
+			/* JSON interchange formats always include
+			   file and line number info */
+			DoPrefixLineNo = 1;
+			if (PsCal == PSCAL_LEVEL1) {
+			    PsCal = PSCAL_LEVEL2;
+			} else {
+			    PsCal = PSCAL_LEVEL3;
+			}
+		    }
 		    arg++;
 		}
 		PARSENUM(CalMonths, arg);
@@ -418,7 +465,10 @@ void InitRemind(int argc, char const *argv[])
 	    case 'W':
 		if (*arg != ',') {
 		    PARSENUM(CalWidth, arg);
-		    if (CalWidth < 71) CalWidth = 71;
+		    if (CalWidth != 0 && CalWidth < 71) CalWidth = 71;
+		    if (CalWidth == 0) {
+			CalWidth = -1;
+		    }
 		}
 		if (*arg == ',') {
 		    arg++;
@@ -599,7 +649,7 @@ void InitRemind(int argc, char const *argv[])
 #ifndef L_USAGE_OVERRIDE
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2018 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2021 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> BETA VERSION <<<<\n");
 #endif
@@ -607,6 +657,7 @@ void Usage(void)
     fprintf(ErrFp, "Options:\n");
     fprintf(ErrFp, " -n     Output next occurrence of reminders in simple format\n");
     fprintf(ErrFp, " -r     Disable RUN directives\n");
+    fprintf(ErrFp, " -@[n,m] Colorize COLOR reminders\n");
     fprintf(ErrFp, " -c[a][n] Produce a calendar for n (default 1) months\n");
     fprintf(ErrFp, " -c[a]+[n] Produce a calendar for n (default 1) weeks\n");
     fprintf(ErrFp, " -w[n[,p[,s]]]  Specify width, padding and spacing of calendar\n");

src/json.h

@@ -0,0 +1,280 @@
+/* vim: set et ts=3 sw=3 sts=3 ft=c:
+ *
+ * Copyright (C) 2012, 2013, 2014 James McLaughlin et al.  All rights reserved.
+ * https://github.com/udp/json-parser
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _JSON_H
+#define _JSON_H
+
+#ifndef json_char
+   #define json_char char
+#endif
+
+#ifndef json_int_t
+   #ifndef _MSC_VER
+      #include <inttypes.h>
+      #define json_int_t int64_t
+   #else
+      #define json_int_t __int64
+   #endif
+#endif
+
+#include <stdlib.h>
+
+#ifdef __cplusplus
+
+   #include <string.h>
+
+   extern "C"
+   {
+
+#endif
+
+typedef struct
+{
+   unsigned long max_memory;
+   int settings;
+
+   /* Custom allocator support (leave null to use malloc/free)
+    */
+
+   void * (* mem_alloc) (size_t, int zero, void * user_data);
+   void (* mem_free) (void *, void * user_data);
+
+   void * user_data;  /* will be passed to mem_alloc and mem_free */
+
+   size_t value_extra;  /* how much extra space to allocate for values? */
+
+} json_settings;
+
+#define json_enable_comments  0x01
+
+typedef enum
+{
+   json_none,
+   json_object,
+   json_array,
+   json_integer,
+   json_double,
+   json_string,
+   json_boolean,
+   json_null
+
+} json_type;
+
+extern const struct _json_value json_value_none;
+
+typedef struct _json_object_entry
+{
+    json_char * name;
+    unsigned int name_length;
+
+    struct _json_value * value;
+
+} json_object_entry;
+
+typedef struct _json_value
+{
+   struct _json_value * parent;
+
+   json_type type;
+
+   union
+   {
+      int boolean;
+      json_int_t integer;
+      double dbl;
+
+      struct
+      {
+	 unsigned int length;
+	 json_char * ptr; /* null terminated */
+
+      } string;
+
+      struct
+      {
+	 unsigned int length;
+
+	 json_object_entry * values;
+
+	 #if defined(__cplusplus) && __cplusplus >= 201103L
+	 decltype(values) begin () const
+	 {  return values;
+	 }
+	 decltype(values) end () const
+	 {  return values + length;
+	 }
+	 #endif
+
+      } object;
+
+      struct
+      {
+	 unsigned int length;
+	 struct _json_value ** values;
+
+	 #if defined(__cplusplus) && __cplusplus >= 201103L
+	 decltype(values) begin () const
+	 {  return values;
+	 }
+	 decltype(values) end () const
+	 {  return values + length;
+	 }
+	 #endif
+
+      } array;
+
+   } u;
+
+   union
+   {
+      struct _json_value * next_alloc;
+      void * object_mem;
+
+   } _reserved;
+
+   #ifdef JSON_TRACK_SOURCE
+
+      /* Location of the value in the source JSON
+       */
+      unsigned int line, col;
+
+   #endif
+
+
+   /* Some C++ operator sugar */
+
+   #ifdef __cplusplus
+
+      public:
+
+	 inline _json_value ()
+	 {  memset (this, 0, sizeof (_json_value));
+	 }
+
+	 inline const struct _json_value &operator [] (int index) const
+	 {
+	    if (type != json_array || index < 0
+		     || ((unsigned int) index) >= u.array.length)
+	    {
+	       return json_value_none;
+	    }
+
+	    return *u.array.values [index];
+	 }
+
+	 inline const struct _json_value &operator [] (const char * index) const
+	 {
+	    if (type != json_object)
+	       return json_value_none;
+
+	    for (unsigned int i = 0; i < u.object.length; ++ i)
+	       if (!strcmp (u.object.values [i].name, index))
+		  return *u.object.values [i].value;
+
+	    return json_value_none;
+	 }
+
+	 inline operator const char * () const
+	 {
+	    switch (type)
+	    {
+	       case json_string:
+		  return u.string.ptr;
+
+	       default:
+		  return "";
+	    };
+	 }
+
+	 inline operator json_int_t () const
+	 {
+	    switch (type)
+	    {
+	       case json_integer:
+		  return u.integer;
+
+	       case json_double:
+		  return (json_int_t) u.dbl;
+
+	       default:
+		  return 0;
+	    };
+	 }
+
+	 inline operator bool () const
+	 {
+	    if (type != json_boolean)
+	       return false;
+
+	    return u.boolean != 0;
+	 }
+
+	 inline operator double () const
+	 {
+	    switch (type)
+	    {
+	       case json_integer:
+		  return (double) u.integer;
+
+	       case json_double:
+		  return u.dbl;
+
+	       default:
+		  return 0;
+	    };
+	 }
+
+   #endif
+
+} json_value;
+
+json_value * json_parse (const json_char * json,
+			 size_t length);
+
+#define json_error_max 128
+json_value * json_parse_ex (json_settings * settings,
+			    const json_char * json,
+			    size_t length,
+			    char * error);
+
+void json_value_free (json_value *);
+
+
+/* Not usually necessary, unless you used a custom mem_alloc and now want to
+ * use a custom mem_free.
+ */
+void json_value_free_ex (json_settings * settings,
+			 json_value *);
+
+
+#ifdef __cplusplus
+   } /* extern "C" */
+#endif
+
+#endif

src/lang.h

@@ -5,7 +5,7 @@
 /*  Header file for language support for various languages.    */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/langs/danish.h

@@ -6,7 +6,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*                                                             */
-/*  REMIND is Copyright (C) 1992-2018 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2021 by Dianne Skoll          */
 /*  This file is Copyright (C) 1993 by Mogens Lynnerup.        */
 /*                                                             */
 /***************************************************************/

src/langs/dutch.h

@@ -11,7 +11,7 @@
 /*  Further corrections by Erik-Jan Vens                       */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/langs/english.h

@@ -5,7 +5,7 @@
 /*  Support for the English language.                          */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

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) 1992-2018 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2021 by Dianne Skoll          */
 /*                                                             */
 /***************************************************************/
 
@@ -302,7 +302,8 @@ EXTERN char *ErrMsg[] =
     "Can't convert between time zones",
     "No files matching *.rem",
     "String too long",
-    "Time specified twice"
+    "Time specified twice",
+    "Cannot specify DURATION without specifying AT"
 
 #elif IBMEXTENDED
     "Ok",
@@ -407,7 +408,8 @@ EXTERN char *ErrMsg[] =
     "Can't convert between time zones",
     "No files matching *.rem",
     "String too long",
-    "Time specified twice"
+    "Time specified twice",
+    "Cannot specify DURATION without specifying AT"
 
 #else
     "Ok",
@@ -512,7 +514,8 @@ EXTERN char *ErrMsg[] =
     "Can't convert between time zones",
     "No files matching *.rem",
     "String too long",
-    "Time specified twice"
+    "Time specified twice",
+    "Cannot specify DURATION without specifying AT"
 
 
 #endif
@@ -524,7 +527,7 @@ EXTERN char *ErrMsg[] =
 #define L_USAGE_OVERRIDE 1
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2018 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2021 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> BETAVERSIO <<<<\n");
 #endif

src/langs/french.h

@@ -8,7 +8,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*                                                             */
-/*  REMIND is Copyright (C) 1992-2018 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2021 by Dianne Skoll          */
 /*  This file is Copyright (C) 1993 by Laurent Duperval and    */
 /*  Dianne Skoll.                                              */
 /*                                                             */
@@ -242,7 +242,8 @@ EXTERN char *ErrMsg[] =
     "Can't convert between time zones",
     "No files matching *.rem",
     "String too long",
-    "Time specified twice"
+    "Time specified twice",
+    "Cannot specify DURATION without specifying AT"
 
 #else /* ISOLATIN1 */
     "Ok",
@@ -347,7 +348,8 @@ EXTERN char *ErrMsg[] =
     "Can't convert between time zones",
     "No files matching *.rem",
     "String too long",
-    "Time specified twice"
+    "Time specified twice",
+    "Cannot specify DURATION without specifying AT"
 #endif /* ISOLATIN1 */
 };
 #endif /* MK_GLOBALS */
@@ -357,7 +359,7 @@ EXTERN char *ErrMsg[] =
 #define L_USAGE_OVERRIDE 1
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2018 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2021 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> BETA VERSION <<<<\n");
 #endif

src/langs/german.h

@@ -9,7 +9,7 @@
 /*  I don't speak German.                                      */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/langs/icelandic.h

@@ -5,7 +5,7 @@
 /*  Support for the Icelandic language.                        */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*  Translated by Björn Davíðsson (bjossi@snerpa.is)           */
 /*                                                             */
 /***************************************************************/

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) 1992-2018 by Dianne Skoll          */
+/*  Remind is copyright (C) 1992-2021 by Dianne Skoll          */
 /*                                                             */
 /***************************************************************/
 

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) 1992-2018 by Dianne Skoll          */
+/*  Remind is Copyright (C) 1992-2021 by Dianne Skoll          */
 /*                                                             */
 /***************************************************************/
 

src/langs/polish.h

@@ -9,7 +9,7 @@
 /*  Polish.                                                    */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -281,7 +281,8 @@ EXTERN char *ErrMsg[] =
     "Can't convert between time zones",
     "No files matching *.rem",
     "String too long",
-    "Time specified twice"
+    "Time specified twice",
+    "Cannot specify DURATION without specifying AT"
 #else /* ISOLATIN1 */
     "OK",
     "Brakujacy ']'",
@@ -385,7 +386,8 @@ EXTERN char *ErrMsg[] =
     "Can't convert between time zones",
     "No files matching *.rem",
     "String too long",
-    "Time specified twice"
+    "Time specified twice",
+    "Cannot specify DURATION without specifying AT"
 #endif /* ISOLATIN1 */
 };
 #endif /* MK_GLOBALS */
@@ -395,7 +397,7 @@ EXTERN char *ErrMsg[] =
 #define L_USAGE_OVERRIDE 1
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2018 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (%s version) Copyright 1992-2021 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> BETA VERSION <<<<\n");
 #endif

src/langs/portbr.h

@@ -8,7 +8,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*                                                             */
-/*  REMIND is Copyright (C) 1992-2018 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2021 by Dianne Skoll          */
 /*  This file is Copyright (C) 1996 by Marco Paganini and      */
 /*  Dianne Skoll.                                              */
 /*                                                             */
@@ -247,7 +247,8 @@ EXTERN char *ErrMsg[] =
     "Can't convert between time zones",
     "No files matching *.rem",
     "String too long",
-    "Time specified twice"
+    "Time specified twice",
+    "Cannot specify DURATION without specifying AT"
 };
 #endif /* MK_GLOBALS */
 
@@ -256,7 +257,7 @@ EXTERN char *ErrMsg[] =
 #define L_USAGE_OVERRIDE 1
 void Usage(void)
 {
-    fprintf(ErrFp, "\nREMIND %s (versao %s) (C) 1992-2018 Dianne Skoll\n", VERSION, L_LANGNAME);
+    fprintf(ErrFp, "\nREMIND %s (versao %s) (C) 1992-2021 Dianne Skoll\n", VERSION, L_LANGNAME);
 #ifdef BETA
     fprintf(ErrFp, ">>>> VERSAO BETA <<<<\n");
 #endif

src/langs/romanian.h

@@ -1,4 +1,4 @@
-!/***************************************************************/
+/***************************************************************/
 /*                                                             */
 /*  ROMANIAN.H                                                 */
 /*                                                             */
@@ -8,7 +8,7 @@
 /*                                                             */
 /*  This file is part of REMIND.                               */
 /*                                                             */
-/*  REMIND is Copyright (C) 1992-2018 by Dianne Skoll          */
+/*  REMIND is Copyright (C) 1992-2021 by Dianne Skoll          */
 /*  This file is Copyright (C) 1996-1998 by Liviu Daia         */
 /*                                                             */
 /***************************************************************/

src/langs/spanish.h

@@ -7,7 +7,7 @@
 /*  Author: Rafa Couto <rafacouto@biogate.com>                 */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/main.c

@@ -6,7 +6,7 @@
 /*  routines, etc.                                             */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -63,14 +63,16 @@ int main(int argc, char *argv[])
     setlocale(LC_ALL, "");
 #endif
 
-/* The very first thing to do is to set up ErrFp to be stderr */
+    /* The very first thing to do is to set up ErrFp to be stderr */
     ErrFp = stderr;
 
-/* Set up global vars */
+    /* Set up global vars */
     ArgC = argc;
     ArgV = (char const **) argv;
 
     InitRemind(argc, (char const **) argv);
+    ClearLastTriggers();
+
     if (DoCalendar || (DoSimpleCalendar && (!NextMode || PsCal))) {
 	ProduceCalendar();
 	return 0;
@@ -125,10 +127,7 @@ int main(int argc, char *argv[])
 	    }
 	}
 	if (Iterations) {
-	    ClearGlobalOmits();
-	    DestroyOmitContexts();
-	    DestroyVars(0);
-	    NumTriggered = 0;
+	    PerIterationInit();
 	    JulianToday++;
 	}
     }
@@ -146,6 +145,19 @@ void PurgeEchoLine(char const *fmt, ...)
 
 }
 
+void
+PerIterationInit(void)
+{
+    ClearGlobalOmits();
+    DestroyOmitContexts();
+    DestroyVars(0);
+    DefaultColorR = -1;
+    DefaultColorG = -1;
+    DefaultColorB = -1;
+    NumTriggered = 0;
+    ClearLastTriggers();
+}
+
 /***************************************************************/
 /*                                                             */
 /*  DoReminders                                                */
@@ -713,7 +725,7 @@ int DoIf(ParsePtr p)
     int r;
     unsigned syndrome;
 
-    if (NumIfs >= IF_NEST) return E_NESTED_IF;
+    if ((size_t) NumIfs >= IF_NEST) return E_NESTED_IF;
 
     if (ShouldIgnoreLine()) syndrome = IF_TRUE | BEFORE_ELSE;
     else {
@@ -794,13 +806,20 @@ int DoIfTrig(ParsePtr p)
     int jul;
 
 
-    if (NumIfs >= IF_NEST) return E_NESTED_IF;
+    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 (trig.typ != NO_TYPE) return E_PARSE_ERR;
-	jul = ComputeTrigger(trig.scanfrom, &trig, &r, 1);
-	if (r) syndrome = IF_TRUE | BEFORE_ELSE;
+	jul = ComputeTrigger(trig.scanfrom, &trig, &tim, &r, 1);
+	if (r) {
+            if (r != E_CANT_TRIG || !trig.maybe_uncomputable) {
+                if (!Hush || r != E_RUN_DISABLED) {
+                    Eprint("%s", ErrMsg[r]);
+                }
+            }
+	    syndrome = IF_TRUE | BEFORE_ELSE;
+	}
 	else {
 	    if (ShouldTriggerReminder(&trig, &tim, jul, &err)) {
 		syndrome = IF_TRUE | BEFORE_ELSE;
@@ -1302,6 +1321,7 @@ void UTCToLocal(int utcdate, int utctime, int *locdate, int *loctime)
 
 void SigIntHandler(int d)
 {
+    UNUSED(d);
     signal(SIGINT, SigIntHandler);
     GotSigInt();
     exit(0);
@@ -1321,3 +1341,67 @@ FreeTrig(Trigger *t)
 {
     DBufFree(&(t->tags));
 }
+
+void
+ClearLastTriggers(void)
+{
+    LastTrigger.expired = 0;
+    LastTrigger.wd = NO_WD;
+    LastTrigger.d = NO_DAY;
+    LastTrigger.m = NO_MON;
+    LastTrigger.y = NO_YR;
+    LastTrigger.back = NO_BACK;
+    LastTrigger.delta = NO_DELTA;
+    LastTrigger.rep  = NO_REP;
+    LastTrigger.localomit = NO_WD;
+    LastTrigger.skip = NO_SKIP;
+    LastTrigger.until = NO_UNTIL;
+    LastTrigger.typ = NO_TYPE;
+    LastTrigger.once = NO_ONCE;
+    LastTrigger.scanfrom = NO_DATE;
+    LastTrigger.from = NO_DATE;
+    LastTrigger.priority = DefaultPrio;
+    LastTrigger.sched[0] = 0;
+    LastTrigger.warn[0] = 0;
+    LastTrigger.omitfunc[0] = 0;
+    LastTrigger.passthru[0] = 0;
+
+    LastTimeTrig.ttime = NO_TIME;
+    LastTimeTrig.delta = NO_DELTA;
+    LastTimeTrig.rep   = NO_REP;
+    LastTimeTrig.duration = NO_TIME;
+}
+
+void
+SaveAllTriggerInfo(Trigger const *t, TimeTrig const *tt, int trigdate, int trigtime, int valid)
+{
+    SaveLastTrigger(t);
+    SaveLastTimeTrig(tt);
+    LastTriggerDate = trigdate;
+    LastTriggerTime = trigtime;
+    LastTrigValid = valid;
+}
+
+void
+SaveLastTrigger(Trigger const *t)
+{
+    memcpy(&LastTrigger, t, sizeof(LastTrigger));
+    DBufInit(&(LastTrigger.tags));
+}
+
+void
+SaveLastTimeTrig(TimeTrig const *t)
+{
+    memcpy(&LastTimeTrig, t, sizeof(LastTimeTrig));
+}
+
+/* Wrapper to ignore warnings about ignoring return value of system() */
+void
+System(char const *cmd)
+{
+    int r;
+    r = system(cmd);
+    if (r == 0) {
+	r = 1;
+    }
+}

src/moon.c

@@ -5,7 +5,7 @@
 /*  Calculations for figuring out moon phases.                 */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 

src/omit.c

@@ -6,7 +6,7 @@
 /*  the data structures for OMITted dates.                     */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -453,6 +453,7 @@ DoThroughOmit(ParsePtr p, int ystart, int mstart, int dstart)
     end   = Julian(yend,   mend,   dend);
 
     if (end < start) {
+	Eprint("Warning: Swapping dates on OMIT ... THROUGH ... line");
 	tmp = start;
 	start = end;
 	end = tmp;

src/protos.h

@@ -5,10 +5,13 @@
 /*  Function Prototypes.                                       */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
+/* Suppress unused variable warnings */
+#define UNUSED(x) (void) x
+
 /* Define a string assignment macro - be careful!!! */
 #define STRSET(x, str) { if (x) free(x); (x) = StrDup(str); }
 
@@ -34,6 +37,7 @@ int ShouldTriggerReminder (Trigger *t, TimeTrig *tim, int jul, int *err);
 int DoSubst (ParsePtr p, DynamicBuffer *dbuf, Trigger *t, TimeTrig *tt, int jul, int mode);
 int DoSubstFromString (char const *source, DynamicBuffer *dbuf, int jul, int tim);
 int ParseLiteralDate (char const **s, int *jul, int *tim);
+int ParseLiteralTime (char const **s, int *tim);
 int EvalExpr (char const **e, Value *v, ParsePtr p);
 int DoCoerce (char type, Value *v);
 void PrintValue  (Value *v, FILE *fp);
@@ -85,7 +89,10 @@ void HandleQueuedReminders (void);
 char const *FindInitialToken (Token *tok, char const *s);
 void FindToken (char const *s, Token *tok);
 void FindNumericToken (char const *s, Token *t);
-int ComputeTrigger (int today, Trigger *trig, int *err, int save_in_globals);
+int ComputeTrigger (int today, Trigger *trig, TimeTrig *tim, int *err, int save_in_globals);
+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);
+int ComputeScanStart(int today, Trigger *trig, TimeTrig *tt);
 char *StrnCpy (char *dest, char const *source, int n);
 int StrMatch (char const *s1, char const *s2, int n);
 int StrinCmp (char const *s1, char const *s2, int n);
@@ -102,7 +109,7 @@ void DumpVarTable (void);
 void DestroyVars (int all);
 int PreserveVar (char const *name);
 int DoPreserve  (Parser *p);
-int DoSatRemind (Trigger *trig, TimeTrig *tim, ParsePtr p);
+int DoSatRemind (Trigger *trig, TimeTrig *tt, ParsePtr p);
 int DoMsgCommand (char const *cmd, char const *msg);
 int ParseNonSpaceChar (ParsePtr p, int *err, int peek);
 unsigned int HashVal (char const *str);
@@ -139,3 +146,18 @@ void PurgeEchoLine(char const *fmt, ...);
 void FreeTrig(Trigger *t);
 void AppendTag(DynamicBuffer *buf, char const *s);
 char const *SynthesizeTag(void);
+void ClearLastTriggers(void);
+void SaveLastTrigger(Trigger const *t);
+void SaveLastTimeTrig(TimeTrig const *t);
+void SaveAllTriggerInfo(Trigger const *t, TimeTrig const *tt, int trigdate, int trigtime, int valid);
+
+void PerIterationInit(void);
+char const *Decolorize(int r, int g, int b);
+char const *Colorize(int r, int g, int b);
+void PrintJSONString(char const *s);
+void PrintJSONKeyPairInt(char const *name, int val);
+void PrintJSONKeyPairString(char const *name, char const *val);
+void PrintJSONKeyPairDate(char const *name, int jul);
+void PrintJSONKeyPairDateTime(char const *name, int dt);
+void PrintJSONKeyPairTime(char const *name, int t);
+void System(char const *cmd);

src/queue.c

@@ -5,7 +5,7 @@
 /*  Queue up reminders for subsequent execution.               */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -27,9 +27,9 @@
 #include <stdlib.h>
 #include <unistd.h>
 
+#include "types.h"
 #include "globals.h"
 #include "err.h"
-#include "types.h"
 #include "protos.h"
 #include "expr.h"
 
@@ -43,6 +43,7 @@ typedef struct queuedrem {
     char passthru[PASSTHRU_LEN+1];
     char sched[VAR_NAME_LEN+1];
     DynamicBuffer tags;
+    Trigger t;
     TimeTrig tt;
 } QueuedRem;
 
@@ -91,6 +92,8 @@ int QueueReminder(ParsePtr p, Trigger *trig,
     qelem->typ = trig->typ;
     strcpy(qelem->passthru, trig->passthru);
     qelem->tt = *tim;
+    qelem->t = *trig;
+    DBufInit(&(qelem->t.tags));
     qelem->next = QueueHead;
     qelem->RunDisabled = RunDisabled;
     qelem->ntrig = 0;
@@ -179,7 +182,7 @@ void HandleQueuedReminders(void)
 	while (TimeToSleep > 0L) {
 	    SleepTime = TimeToSleep;
 
-	    if (Daemon > 0 && SleepTime > 60*Daemon) SleepTime = 60*Daemon;
+	    if (Daemon > 0 && SleepTime > (unsigned int) 60*Daemon) SleepTime = 60*Daemon;
 
 	    /* Wake up once a minute to recalibrate sleep time in
 	       case of laptop hibernation */
@@ -243,9 +246,7 @@ void HandleQueuedReminders(void)
 
 	    /* Set up global variables so some functions like trigdate()
 	       and trigtime() work correctly                             */
-	    LastTriggerDate = JulianToday;
-	    LastTriggerTime = q->tt.ttime;
-	    LastTrigValid = 1;
+	    SaveAllTriggerInfo(&(q->t), &(q->tt), JulianToday, q->tt.ttime, 1);
 	    (void) TriggerReminder(&p, &trig, &q->tt, JulianToday);
 	    if (Daemon < 0) {
 		printf("NOTE endreminder\n");
@@ -447,6 +448,70 @@ static int CalculateNextTimeUsingSched(QueuedRem *q)
     }
 }
 
+/* Dump the queue in JSON format */
+static void
+json_queue(QueuedRem const *q)
+{
+    int done = 0;
+    printf("[");
+    while(q) {
+	if (q->tt.nexttime == NO_TIME) {
+	    q = q->next;
+	    continue;
+	}
+	if (done) {
+	    printf(",");
+	}
+	done = 1;
+	printf("{");
+	switch(q->typ) {
+	case NO_TYPE: PrintJSONKeyPairString("type", "NO_TYPE"); break;
+	case MSG_TYPE: PrintJSONKeyPairString("type", "MSG_TYPE"); break;
+	case RUN_TYPE: PrintJSONKeyPairString("type", "RUN_TYPE"); break;
+	case CAL_TYPE: PrintJSONKeyPairString("type", "CAL_TYPE"); break;
+	case SAT_TYPE: PrintJSONKeyPairString("type", "SAT_TYPE"); break;
+	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;
+	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("\"");
+	PrintJSONString("body");
+	printf("\":\"");
+	if (q->text) {
+	    PrintJSONString(q->text);
+	} else {
+	    PrintJSONString("");
+	}
+	printf("\"}");
+	q = q->next;
+    }
+    printf("]\n");
+}
+
 /***************************************************************/
 /*                                                             */
 /*  DaemonWait                                                 */
@@ -508,28 +573,34 @@ static void DaemonWait(unsigned int sleeptime)
 	printf("NOTE queue\n");
 	QueuedRem *q = QueueHead;
 	while (q) {
-	    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;
+	    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");
 	    }
-	    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;
 	}
 	printf("NOTE endqueue\n");
 	fflush(stdout);
+    } else if (!strcmp(cmdLine, "JSONQUEUE\n")) {
+	printf("NOTE JSONQUEUE\n");
+	json_queue(QueueHead);
+	printf("NOTE ENDJSONQUEUE\n");
+	fflush(stdout);
     } else if (!strcmp(cmdLine, "REREAD\n")) {
 	printf("NOTE reread\n");
 	fflush(stdout);

src/rem2ps.c

@@ -5,7 +5,7 @@
 /*  Print a PostScript calendar.                               */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -20,6 +20,7 @@
 #include <unistd.h>
 #include <stdlib.h>
 #include "rem2ps.h"
+#include "json.h"
 
 #define NEW(type) (malloc(sizeof(type)))
 
@@ -30,6 +31,7 @@
 #define SPECIAL_COLOR      4
 #define SPECIAL_WEEK       5
 #define SPECIAL_SHADE      6
+#define SPECIAL_UNKNOWN    7
 
 /* Array holding how specials sort */
 static int SpecialSortOrder[] = {
@@ -46,6 +48,7 @@ typedef struct calentry {
     struct calentry *next;
     int special;
     char *entry;
+    int daynum;
 } CalEntry;
 
 typedef struct {
@@ -62,7 +65,7 @@ char const *SmallCalLoc[] = {
     "sbt",
 };
 
-#define NUMSMALL (sizeof(SmallCalLoc)/sizeof(SmallCalLoc[0]))
+#define NUMSMALL ((int) (sizeof(SmallCalLoc)/sizeof(SmallCalLoc[0])))
 char const *SmallLocation;
 int SmallCol1, SmallCol2;
 
@@ -96,6 +99,7 @@ CalEntry *CurEntries = NULL;
 CalEntry *PsEntries[32];
 PageType *CurPage;
 char PortraitMode;
+char DaynumRight;
 char NoSmallCal;
 char UseISO;
 
@@ -137,6 +141,184 @@ void WriteOneEntry (CalEntry *c);
 void GetSmallLocations (void);
 char const *EatToken(char const *in, char *out, int maxlen);
 
+static void
+put_escaped_string(char const *s)
+{
+    while(*s) {
+        if (*s == '\\' || *s == '(' || *s == ')') {
+            PutChar('\\');
+        }
+        PutChar(*s);
+        s++;
+    }
+}
+
+/***************************************************************/
+/*                                                             */
+/*  StrCmpi                                                    */
+/*                                                             */
+/*  Compare strings, case insensitive.                         */
+/*                                                             */
+/***************************************************************/
+int StrCmpi(char const *s1, char const *s2)
+{
+    int r;
+    while (*s1 && *s2) {
+	r = toupper(*s1) - toupper(*s2);
+	if (r) return r;
+	s1++;
+	s2++;
+    }
+    return toupper(*s1) - toupper(*s2);
+}
+/***************************************************************/
+/*                                                             */
+/*   Parse the new-style JSON intermediate format              */
+/*                                                             */
+/***************************************************************/
+static CalEntry *
+JSONToCalEntry(DynamicBuffer *buf)
+{
+    CalEntry *c;
+    json_value *val;
+
+    val = json_parse(DBufValue(buf), DBufLen(buf));
+    if (!val) {
+	fprintf(stderr, "Unable to parse JSON line `%s'\n", DBufValue(buf));
+	exit(1);
+    }
+
+    if (val->type != json_object) {
+	fprintf(stderr, "Expecting JSON object; found `%s'\n",
+		DBufValue(buf));
+	exit(1);
+    }
+
+    c = NEW(CalEntry);
+    if (!c) {
+	fprintf(stderr, "malloc failed - aborting.\n");
+	exit(1);
+    }
+    c->next = NULL;
+    c->special = SPECIAL_NORMAL;
+
+    int got_date = 0, got_body = 0;
+    size_t i;
+    for (i=0; i<val->u.object.length; i++) {
+	char const *nm = val->u.object.values[i].name;
+	json_value *v = val->u.object.values[i].value;
+	char const *s;
+	if (!strcmp(nm, "date")) {
+	    if (v->type == json_string) {
+		s = v->u.string.ptr;
+		c->daynum = (s[8] - '0') * 10 + s[9] - '0';
+		got_date = 1;
+	    }
+	} else if (!strcmp(nm, "body")) {
+	    if (v->type == json_string) {
+		s = v->u.string.ptr;
+		c->entry = malloc(strlen(s)+1);
+		if (!c->entry) {
+		    fprintf(stderr, "malloc failed - aborting.\n");
+		    exit(1);
+		}
+		strcpy(c->entry, s);
+		got_body = 1;
+	    }
+	} else if (!strcmp(nm, "passthru")) {
+	    if (v->type == json_string) {
+		s = v->u.string.ptr;
+		if (!StrCmpi(s, "PostScript")) {
+		    c->special = SPECIAL_POSTSCRIPT;
+		} else if (!StrCmpi(s, "SHADE")) {
+		    c->special = SPECIAL_SHADE;
+		} else if (!StrCmpi(s, "MOON")) {
+		    c->special = SPECIAL_MOON;
+		} else if (!StrCmpi(s, "WEEK")) {
+		    c->special = SPECIAL_WEEK;
+		} else if (!StrCmpi(s, "PSFile")) {
+		    c->special = SPECIAL_PSFILE;
+		} else if (!StrCmpi(s, "COLOUR") ||
+			   !StrCmpi(s, "COLOR")) {
+		    c->special = SPECIAL_COLOR;
+		} else {
+		    c->special = SPECIAL_UNKNOWN;
+		}
+	    }
+	}
+    }
+
+    json_value_free(val);
+
+    if (!got_body || !got_date) {
+	fprintf(stderr, "Could not parse line `%s'\n", DBufValue(buf));
+	exit(1);
+    }
+    return c;
+}
+
+/***************************************************************/
+/*                                                             */
+/*   Parse the old-style REM2PS intermediate format            */
+/*                                                             */
+/***************************************************************/
+static CalEntry *
+TextToCalEntry(DynamicBuffer *buf)
+{
+    char const *startOfBody;
+    char passthru[PASSTHRU_LEN+1];
+
+    CalEntry *c = NEW(CalEntry);
+    if (!c) {
+	fprintf(stderr, "malloc failed - aborting.\n");
+	exit(1);
+    }
+    c->next = NULL;
+    c->special = SPECIAL_NORMAL;
+    c->daynum = (DBufValue(buf)[8] - '0') * 10 + DBufValue(buf)[9] - '0';
+
+    /* Skip the tag, duration and time */
+    startOfBody = DBufValue(buf)+10;
+
+    /* Eat the passthru */
+    startOfBody = EatToken(startOfBody, passthru, PASSTHRU_LEN);
+
+    /* Eat the tag */
+    startOfBody = EatToken(startOfBody, NULL, 0);
+
+    /* Eat the duration */
+    startOfBody = EatToken(startOfBody, NULL, 0);
+
+    /* Eat the time */
+    startOfBody = EatToken(startOfBody, NULL, 0);
+
+    c->entry = malloc(strlen(startOfBody) + 1);
+    if (!c->entry) {
+	fprintf(stderr, "malloc failed - aborting.\n");
+	exit(1);
+    }
+    strcpy(c->entry, startOfBody);
+
+    /* Save the type of SPECIAL */
+    if (!StrCmpi(passthru, "PostScript")) {
+	c->special = SPECIAL_POSTSCRIPT;
+    } else if (!StrCmpi(passthru, "SHADE")) {
+	c->special = SPECIAL_SHADE;
+    } else if (!StrCmpi(passthru, "MOON")) {
+	c->special = SPECIAL_MOON;
+    } else if (!StrCmpi(passthru, "WEEK")) {
+	c->special = SPECIAL_WEEK;
+    } else if (!StrCmpi(passthru, "PSFile")) {
+	c->special = SPECIAL_PSFILE;
+    } else if (!StrCmpi(passthru, "COLOUR") ||
+	       !StrCmpi(passthru, "COLOR")) {
+	c->special = SPECIAL_COLOR;
+    } else if (StrCmpi(passthru, "*")) {
+	c->special = SPECIAL_UNKNOWN;
+    }
+    return c;
+}
+
 /***************************************************************/
 /*                                                             */
 /*   MAIN PROGRAM                                              */
@@ -154,13 +336,20 @@ int main(int argc, char *argv[])
 	Usage("Input should not come from a terminal");
     }
 
+    int first_line = 1;
     /* Search for a valid input file */
     while (!feof(stdin)) {
 	DBufGets(&buf, stdin);
-	if (!strcmp(DBufValue(&buf), PSBEGIN)) {
+	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);
+	}
+	first_line = 0;
+	if (!strcmp(DBufValue(&buf), PSBEGIN) ||
+	    !strcmp(DBufValue(&buf), PSBEGIN2)) {
 	    if (!validfile) {
 		if (Verbose) {
-		    fprintf(stderr, "Rem2PS: Version %s Copyright 1992-1998 by Dianne Skoll\n\n", VERSION);
+		    fprintf(stderr, "Rem2PS: Version %s Copyright 1992-2021 by Dianne Skoll\n\n", VERSION);
 		    fprintf(stderr, "Generating PostScript calendar\n");
 		}
 	    }
@@ -191,10 +380,7 @@ void DoPsCal(void)
     int days, wkday, prevdays, nextdays;
     int sfirst;
     int i;
-    int is_ps;
     int firstcol;
-    char const *startOfBody;
-    char passthru[PASSTHRU_LEN+1];
     DynamicBuffer buf;
     CalEntry *c, *d, *p;
 
@@ -230,6 +416,7 @@ void DoPsCal(void)
 
     printf("%%%%Page: %c%c%c%c%c %d\n", month[0], month[1], month[2],
 	   year[2], year[3], validfile);
+    printf("%%%%PageBoundingBox: 0 0 %d %d\n", CurPage->xsize, CurPage->ysize);
 
 /* Emit PostScript to do the heading */
     if (!PortraitMode) printf("90 rotate 0 XSIZE neg translate\n");
@@ -272,80 +459,48 @@ void DoPsCal(void)
 	}
 
 	DBufGets(&buf, stdin);
-	if (!strcmp(DBufValue(&buf), PSEND)) {
+	if (!strcmp(DBufValue(&buf), PSEND) ||
+	    !strcmp(DBufValue(&buf), PSEND2)) {
 	    DBufFree(&buf);
 	    break;
 	}
 
 	/* Ignore lines beginning with '#' */
 	if (DBufValue(&buf)[0] == '#') {
+	    DBufFree(&buf);
 	    continue;
 	}
-	/* Read the day number - a bit of a hack! */
-	DayNum = (DBufValue(&buf)[8] - '0') * 10 + DBufValue(&buf)[9] - '0';
-	if (DayNum != CurDay) {
-	    for(; CurDay<DayNum; CurDay++) {
+
+	if (DBufValue(&buf)[0] == '{') {
+	    /* Starts with '{', so assume new-style JSON format */
+	    c = JSONToCalEntry(&buf);
+	} else {
+	    /* Assume it's the old-style rem2ps intermediate format */
+	    c = TextToCalEntry(&buf);
+	}
+
+	/* If it's an unknown special, ignore */
+	if (c->special == SPECIAL_UNKNOWN) {
+	    DBufFree(&buf);
+	    free(c);
+	    c = NULL;
+	    continue;
+	}
+	if (c->daynum != CurDay) {
+	    for(; CurDay<c->daynum; CurDay++) {
 		WriteCalEntry();
 		WkDayNum = (WkDayNum + 1) % 7;
 	    }
 	}
-	/* Add the text */
-	c = NEW(CalEntry);
-	if (!c) {
-	    fprintf(stderr, "malloc failed - aborting.\n");
-	    exit(1);
-	}
-	c->next = NULL;
-	c->special = SPECIAL_NORMAL;
-
-	/* Skip the tag, duration and time */
-	startOfBody = DBufValue(&buf)+10;
-
-	/* Eat the passthru */
-	startOfBody = EatToken(startOfBody, passthru, PASSTHRU_LEN);
-
-	/* Eat the tag */
-	startOfBody = EatToken(startOfBody, NULL, 0);
-
-	/* Eat the duration */
-	startOfBody = EatToken(startOfBody, NULL, 0);
-
-	/* Eat the time */
-	startOfBody = EatToken(startOfBody, NULL, 0);
-
-	is_ps = 0;
-	if (!strcmp(passthru, "PostScript") ||
-	    !strcmp(passthru, "PSFile") ||
-	    !strcmp(passthru, "MOON") ||
-	    !strcmp(passthru, "WEEK") ||
-	    !strcmp(passthru, "SHADE")) {
-	    is_ps = 1;
-	}
-	c->entry = malloc(strlen(startOfBody) + 1);
-	if (!c->entry) {
-	    fprintf(stderr, "malloc failed - aborting.\n");
-	    exit(1);
-	}
-	strcpy(c->entry, startOfBody);
-
-	if (is_ps) {
-	    /* Save the type of SPECIAL */
-	    if (!strcmp(passthru, "PostScript")) {
-		c->special = SPECIAL_POSTSCRIPT;
-	    } else if (!strcmp(passthru, "SHADE")) {
-		c->special = SPECIAL_SHADE;
-	    } else if (!strcmp(passthru, "MOON")) {
-		c->special = SPECIAL_MOON;
-	    } else if (!strcmp(passthru, "WEEK")) {
-		c->special = SPECIAL_WEEK;
+	if (c->special == SPECIAL_POSTSCRIPT ||
+	    c->special == SPECIAL_SHADE ||
+	    c->special == SPECIAL_MOON ||
+	    c->special == SPECIAL_WEEK ||
+	    c->special == SPECIAL_PSFILE) {
+	    if (!PsEntries[c->daynum]) {
+		PsEntries[c->daynum] = c;
 	    } else {
-		c->special = SPECIAL_PSFILE;
-	    }
-
-	    if (!PsEntries[DayNum]) {
-		PsEntries[DayNum] = c;
-	    } else {
-		d = PsEntries[DayNum];
+		d = PsEntries[c->daynum];
 		p = NULL;
 		/* Slot it into the right place */
 		while (d->next && (SpecialSortOrder[c->special] <= SpecialSortOrder[d->special])) {
@@ -359,14 +514,12 @@ void DoPsCal(void)
 		    if (p) {
 			p->next = c;
 		    } else {
-			PsEntries[DayNum] = c;
+			PsEntries[c->daynum] = c;
 		    }
 		    c->next = d;
 		}
 	    }
-	} else if (!strcmp(passthru, "*") ||
-		   !strcmp(passthru, "COLOUR") ||
-	           !strcmp(passthru, "COLOR")) {
+	} else {
 	    /* Put on linked list */
 	    if (!CurEntries) {
 		CurEntries = c;
@@ -375,10 +528,6 @@ void DoPsCal(void)
 		while(d->next) d = d->next;
 		d->next = c;
 	    }
-	    if (!strcmp(passthru, "COLOR") ||
-		!strcmp(passthru, "COLOUR")) {
-		c->special = SPECIAL_COLOR;
-	    }
 	}
     }
     for(; CurDay<=days; CurDay++) {
@@ -451,6 +600,12 @@ void WriteProlog(void)
     printf("%%%%Pages: (atend)\n");
     printf("%%%%Orientation: %s\n", PortraitMode ? "Portrait" : "Landscape");
     printf("%%%%EndComments\n");
+    if (PortraitMode) {
+        printf("<< /PageSize [%d %d] >> setpagedevice\n", x, y);
+    } else {
+        /* They were swapped up above, so swap them back or we'll get rotated output */
+        printf("<< /PageSize [%d %d] >> setpagedevice\n", y, x);
+    }
 
     for (i=0; PSProlog1[i]; i++) puts(PSProlog1[i]);
     if (!MondayFirst)
@@ -543,7 +698,7 @@ void WriteCalEntry(void)
     printf("]\n");
 
 /* Print the day number */
-    printf("(%d)\n", CurDay);
+    printf("(%d) %d\n", CurDay, (int) DaynumRight);
 /* Do it! */
     printf("DoCalBox\n");
 
@@ -669,7 +824,8 @@ void Init(int argc, char *argv[])
     char const *s;
     char const *t;
     int i=1;
-    int j;
+    size_t j;
+    int k;
     int offset;
 
     PortraitMode = 1;
@@ -682,6 +838,7 @@ void Init(int argc, char *argv[])
     FillPage = 0;
     MondayFirst = 0;
     SmallLocation = "bt";
+    DaynumRight = 1;
 
     for(j=0; j<32; j++) PsEntries[i] = NULL;
 
@@ -798,13 +955,14 @@ void Init(int argc, char *argv[])
 
 	case 'i': UseISO = 1; break;
 
-	case 'c': j=(*s);
-	    if (!j) {
+        case 'x': DaynumRight = 0; break;
+	case 'c': k=(*s);
+	    if (!k) {
 		SmallLocation = SmallCalLoc[0];
 	    } else {
-		j -= '0';
-		if (j>=0 && j<NUMSMALL) {
-		    SmallLocation = SmallCalLoc[j];
+		k -= '0';
+		if (k>=0 && k<NUMSMALL) {
+		    SmallLocation = SmallCalLoc[k];
 		} else {
 		    SmallLocation = SmallCalLoc[0];
 		}
@@ -842,6 +1000,7 @@ void Usage(char const *s)
     fprintf(stderr, "-b size       Set border size for calendar entries\n");
     fprintf(stderr, "-t size       Set line thickness\n");
     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);
 }
@@ -917,10 +1076,10 @@ int DoQueuedPs(void)
     FILE *fp;
     int fnoff;
     char buffer[512];
-    char const *size, *extra;
+    char fbuffer[512];
+    char const *size, *fsize, *extra;
     char const *s;
     int num, r, g, b, phase, fontsize, moonsize;
-    unsigned char c;
 
     if (!MondayFirst) begin = CurDay - WkDayNum;
     else		     begin = CurDay - (WkDayNum ? WkDayNum-1 : 6);
@@ -992,19 +1151,28 @@ int DoQueuedPs(void)
 		while(*s && isspace(*s)) {
 		    s++;
 		}
-		while(*s) {
-		    if (*s == '\\' || *s == '(' || *s == ')') {
-			PutChar('\\');
-		    }
-		    PutChar(*s);
-		    s++;
-		}
+                put_escaped_string(s);
 		printf(") show grestore\n");
 		break;
 
 	    case SPECIAL_MOON:		/* Moon phase */
 		num = sscanf(e->entry+fnoff, "%d %d %d", &phase, &moonsize,
 			     &fontsize);
+		/* See if we have extra stuff */
+		extra = e->entry+fnoff;
+
+		/* Skip phase */
+		while(*extra && !isspace(*extra)) extra++;
+		while(*extra && isspace(*extra)) extra++;
+
+		/* Skip moon size */
+		while(*extra && !isspace(*extra)) extra++;
+		while(*extra && isspace(*extra)) extra++;
+
+		/* Skip font size */
+		while(*extra && !isspace(*extra)) extra++;
+		while(*extra && isspace(*extra)) extra++;
+
 		if (num == 1) {
 		    moonsize = -1;
 		    fontsize = -1;
@@ -1026,7 +1194,27 @@ int DoQueuedPs(void)
 		    size = buffer;
 		}
 
-		printf("gsave 0 setgray newpath Border %s add BoxHeight Border sub %s sub\n", size, size);
+                /* Store the starting X coordinate in "moonstartx" */
+                if (DaynumRight) {
+                    printf("Border %s add /moonstartx exch def", size);
+                } else {
+                    printf("xincr Border sub %s sub ", size);
+                    if (*extra) {
+                        if (fontsize < 0) {
+                            fsize = "EntrySize";
+                        } else {
+                            sprintf(fbuffer, "%d", fontsize);
+                            fsize = fbuffer;
+                        }
+                        printf("/EntryFont findfont %s scalefont setfont (",
+                               fsize);
+                        put_escaped_string(extra);
+                        printf(") stringwidth pop sub Border sub ");
+                    }
+                    printf("/moonstartx exch def\n");
+                }
+                printf(" gsave 0 setgray newpath ");
+                printf("moonstartx BoxHeight Border sub %s sub\n", size);
 		printf(" %s 0 360 arc closepath\n", size);
 		switch(phase) {
 		case 0:
@@ -1037,49 +1225,28 @@ int DoQueuedPs(void)
 		    break;
 
 		case 1:
-		    printf("stroke\n");
-		    printf("newpath Border %s add BoxHeight Border sub %s sub\n",
-			   size, size);
+		    printf("stroke\nnewpath ");
+                    printf("moonstartx BoxHeight Border sub %s sub\n", size);
 		    printf("%s 90 270 arc closepath fill\n", size);
 		    break;
 		default:
-		    printf("stroke\n");
-		    printf("newpath Border %s add BoxHeight Border sub %s sub\n",
-		size, size);
+		    printf("stroke\nnewpath ");
+                    printf("moonstartx BoxHeight Border sub %s sub\n", size);
 		    printf("%s 270 90 arc closepath fill\n", size);
 		    break;
 		}
-		/* See if we have extra stuff */
-		extra = e->entry+fnoff;
-
-		/* Skip phase */
-		while(*extra && !isspace(*extra)) extra++;
-		while(*extra && isspace(*extra)) extra++;
-
-		/* Skip moon size */
-		while(*extra && !isspace(*extra)) extra++;
-		while(*extra && isspace(*extra)) extra++;
-
-		/* Skip font size */
-		while(*extra && !isspace(*extra)) extra++;
-		while(*extra && isspace(*extra)) extra++;
-
 		/* Anything left? */
 		if (*extra) {
-		    printf("Border %s add %s add Border add BoxHeight border sub %s sub %s sub moveto\n", size, size, size, size);
+                    printf("moonstartx %s add Border add BoxHeight border sub %s sub %s sub moveto\n", size, size, size);
 		    if (fontsize < 0) {
-			size = "EntrySize";
+			fsize = "EntrySize";
 		    } else {
-			sprintf(buffer, "%d", fontsize);
-			size = buffer;
+			sprintf(fbuffer, "%d", fontsize);
+			fsize = fbuffer;
 		    }
 		    printf("/EntryFont findfont %s scalefont setfont (",
-			   size);
-		    while(*extra) {
-			c = (unsigned char) *extra++;
-			if (c == '\\' || c == '(' || c == ')') PutChar('\\');
-			PutChar(c);
-		    }
+			   fsize);
+                    put_escaped_string(extra);
 		    printf(") show\n");
 
 		}

src/rem2ps.h

@@ -5,7 +5,7 @@
 /*  Define the PostScript prologue                             */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -13,7 +13,7 @@ char *PSProlog1[] =
 {
     "% This file was produced by Remind and Rem2PS, written by",
     "% Dianne Skoll.",
-    "% Remind and Rem2PS are Copyright 1992-1997 Dianne Skoll.",
+    "% Remind and Rem2PS are Copyright 1992-2021 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",
@@ -196,9 +196,10 @@ char *PSProlog2[] =
     "% Variables for calendar boxes:",
     "% ytop - current top position",
     "% ymin - minimum y reached for current row",
-    "% border ytop xleft width textarray daynum DoCalBox ybot",
+    "% border ytop xleft width textarray daynum onright DoCalBox ybot",
     "% Do the entries for one calendar box.  Returns lowest Y-coordinate reached",
     "/DoCalBox {",
+    "   /onright exch def",
     "   /daynum exch def",
     "   /textarr exch def",
     "   /wid exch def",
@@ -207,8 +208,10 @@ char *PSProlog2[] =
     "   /border exch def",
     "% Do the day number",
     "   /DayFont findfont DaySize scalefont setfont",
-    "   xl wid add border sub daynum stringwidth pop sub",
-    "   yt border sub DaySize sub moveto daynum show",
+    "   onright 1 eq",
+    "   {xl wid add border sub daynum stringwidth pop sub yt border sub DaySize sub moveto daynum show}",
+    "   {xl border add yt border sub DaySize sub moveto daynum show}",
+    "   ifelse",
     "% Do the text entries.  Precharge the stack with current y pos.",
     "   /ycur yt border sub DaySize sub DaySize sub 2 add def",
     "   /EntryFont findfont EntrySize scalefont setfont",

src/sort.c

@@ -5,7 +5,7 @@
 /*  Routines for sorting reminders by trigger date             */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -150,7 +150,7 @@ void IssueSortedReminders(void)
 	    break;
 
 	case RUN_TYPE:
-	    system(cur->text);
+	    System(cur->text);
 	    break;
 	}
 

src/token.c

@@ -6,7 +6,7 @@
 /*  classifying the tokens parsed.                             */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -67,6 +67,7 @@ Token TokArray[] = {
     { "june",		3,	T_Month,	5 },
     { "march",		3,	T_Month,	2 },
     { "may",		3,	T_Month,	4 },
+    { "maybe-uncomputable", 5,  T_MaybeUncomputable, 0},
     { "monday",		3,	T_WkDay,	0 },
     { "msf",		3,	T_RemType,	MSF_TYPE },
     { "msg",		3,	T_RemType,	MSG_TYPE },
@@ -228,11 +229,11 @@ void FindToken(char const *s, Token *tok)
 /* If language is other than English, search the DayNames[] and MonthNames[]
    array. */
 #if LANG != ENGLISH
-    for (r=0; r<(sizeof(NonEnglishToks) / sizeof(Token)); r++) {
-	if (l >= NonEnglishToks[r].MinLen &&
-	    !TokStrCmp(&NonEnglishToks[r], s)) {
-	    tok->type = NonEnglishToks[r].type;
-	    tok->val = NonEnglishToks[r].val;
+    for (size_t x=0; x<(sizeof(NonEnglishToks) / sizeof(Token)); x++) {
+	if (l >= NonEnglishToks[x].MinLen &&
+	    !TokStrCmp(&NonEnglishToks[x], s)) {
+	    tok->type = NonEnglishToks[x].type;
+	    tok->val = NonEnglishToks[x].val;
 	    return;
 	}
     }
@@ -257,6 +258,7 @@ void FindNumericToken(char const *s, Token *t)
 {
     int mult = 1, hour, min;
     char const *s_orig = s;
+    int ampm = 0;
 
     t->type = T_Illegal;
     t->val = 0;
@@ -284,10 +286,6 @@ void FindNumericToken(char const *s, Token *t)
 	   like Jan 6, 1998 */
 	if (*s == ',') {
 	    s++;
-	    /* Special hack - convert years between 90 and
-	       99 to 1990 and 1999 */
-	    if (t->val >= 90 && t->val <= 99) t->val += 1900;
-
 	    /* Classify the number we've got */
 	    if (t->val >= BASE && t->val <= BASE+YR_RANGE) t->type = T_Year;
 	    else if (t->val >= 1 && t->val <= 31) t->type = T_Day;
@@ -299,7 +297,29 @@ void FindNumericToken(char const *s, Token *t)
 	    s++;
 	    hour = t->val;
 	    PARSENUM(min, s);
-	    if (*s || min > 59) return;  /* Illegal time */
+	    if (min > 59) return; /* Illegal time */
+	    /* Check for p[m] or a[m] */
+	    if (*s == 'A' || *s == 'a' || *s == 'P' || *s == 'p') {
+		ampm = tolower(*s);
+		s++;
+		if (*s == 'm' || *s == 'M') {
+		    s++;
+		}
+	    }
+	    if (*s) return;  /* Illegal time */
+	    if (ampm) {
+		if (hour < 1 || hour > 12) return;
+		if (ampm == 'a') {
+		    if (hour == 12) {
+			hour = 0;
+		    }
+		} else if (ampm == 'p') {
+		    if (hour < 12) {
+			hour += 12;
+		    }
+		}
+	    }
+
 	    t->val = hour*60 + min;  /* Convert to minutes past midnight */
 	    if (hour <= 23) {
 		t->type = T_Time;

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) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -24,6 +24,8 @@
 #define GOT_YR 4
 #define GOT_WD 8
 
+#define ADVANCE_TO_WD(x, wd) while (! ((wd) & (1 << ((x)%7)))) (x)++
+
 static int JYear(int jul);
 static int JMonth(int jul);
 static int NextSimpleTrig(int startdate, Trigger *trig, int *err);
@@ -58,9 +60,10 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
     if (trig->wd != NO_WD) typ |= GOT_WD;
     switch(typ) {
     case 0:
+        return startdate;
+
     case GOT_WD:
-	if (trig->wd != NO_WD)
-	    while(! (trig->wd & (1 << (startdate%7)))) startdate++;
+	ADVANCE_TO_WD(startdate, trig->wd);
 	return startdate;
 
     case GOT_DAY:
@@ -83,12 +86,12 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	else return -1;
 
     case GOT_DAY+GOT_MON:
-	if (m > trig->m || (m == trig->m && d > trig->d)) y++;
 	if (trig->d > MonthDays[trig->m]) {
 	    *err = E_BAD_DATE;
 	    return -1;
 	}
 
+	if (m > trig->m || (m == trig->m && d > trig->d)) y++;
 	/* Take care of Feb. 29 */
 	while (trig->d > DaysInMonth(trig->m, y)) y++;
 	return Julian(y, trig->m, trig->d);
@@ -121,19 +124,19 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	if (y > trig->y) return -1;
 	if (y < trig->y) j = Julian(trig->y, 0, 1);
 	else j = startdate;
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	if (JYear(j) > trig->y) return -1;
 	return j;
 
     case GOT_MON+GOT_WD:
 	if (m == trig->m) {
 	    j = startdate;
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
 	    if (JMonth(j) == trig->m) return j;
 	}
 	if (m >= trig->m) j = Julian(y+1, trig->m, 1);
 	else j = Julian(y, trig->m, 1);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	return j; /* Guaranteed to be within the month */
 
     case GOT_DAY+GOT_WD:
@@ -144,7 +147,7 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	    /* If there are fewer days in previous month, no match */
 	    if (trig->d <= DaysInMonth(m2, y2)) {
 		j = Julian(y2, m2, trig->d);
-		while(! (trig->wd & (1 << (j%7)))) j++;
+                ADVANCE_TO_WD(j, trig->wd);
 		if (j >= startdate) return j;
 
 	    }
@@ -153,7 +156,7 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	/* Try this month */
 	if (trig->d <= DaysInMonth(m, y)) {
 	    j = Julian(y, m, trig->d);
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
 	    if (j >= startdate) return j;
 	}
 
@@ -162,18 +165,18 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	if (m2 > 11) { m2 = 0; y++; }
 	while (trig->d > DaysInMonth(m2, y)) m2++;
 	j = Julian(y, m2, trig->d);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	return j;
 
     case GOT_WD+GOT_YR+GOT_DAY:
 	if (y > trig->y+1 || (y > trig->y && m>0)) return -1;
 	if (y > trig->y) {
 	    j = Julian(trig->y, 11, trig->d);
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
 	    if (j >= startdate) return j;
 	} else if (y < trig->y) {
 	    j = Julian(trig->y, 0, trig->d);
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
 	    return j;
 	} else {
 	    /* Try last month */
@@ -181,14 +184,16 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 		m2 = m-1;
 		while (trig->d > DaysInMonth(m2, trig->y)) m2--;
 		j = Julian(trig->y, m2, trig->d);
-		while(! (trig->wd & (1 << (j%7)))) j++;
+                ADVANCE_TO_WD(j, trig->wd);
+                if (JYear(j) > trig->y) return -1;
 		if (j >= startdate) return j;
 	    }
 	}
 	/* Try this month */
 	if (trig->d <= DaysInMonth(m, trig->y)) {
 	    j = Julian(trig->y, m, trig->d);
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
+            if (JYear(j) > trig->y) return -1;
 	    if (j >= startdate) return j;
 	}
 
@@ -197,7 +202,8 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	m++;
 	while (trig->d > DaysInMonth(m, trig->d)) m++;
 	j = Julian(trig->y, m, trig->d);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
+        if (JYear(j) > trig->y) return -1;
 	return j;
 
     case GOT_DAY+GOT_MON+GOT_WD:
@@ -215,31 +221,32 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 
 	/* Try last year */
 	j = Julian(y, trig->m, trig->d);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	if (j >= startdate) return j;
 
 	/* Try this year */
 	y++;
+	while (trig->d > DaysInMonth(trig->m, y)) y++;
 	j = Julian(y, trig->m, trig->d);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	if (j >= startdate) return j;
 
 	/* Must be next year */
 	y++;
 	while (trig->d > DaysInMonth(trig->m, y)) y++;
 	j = Julian(y, trig->m, trig->d);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	return j;
 
     case GOT_WD+GOT_MON+GOT_YR:
 	if (y > trig->y || (y == trig->y && m > trig->m)) return -1;
 	if (trig->y > y || (trig->y == y && trig->m > m)) {
 	    j = Julian(trig->y, trig->m, 1);
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
 	    return j;
 	} else {
 	    j = startdate;
-	    while(! (trig->wd & (1 << (j%7)))) j++;
+            ADVANCE_TO_WD(j, trig->wd);
 	    FromJulian(j, &y2, &m2, &d2);
 	    if (m2 == trig->m) return j; else return -1;
 	}
@@ -250,7 +257,7 @@ static int NextSimpleTrig(int startdate, Trigger *trig, int *err)
 	    return -1;
 	}
 	j = Julian(trig->y, trig->m, trig->d);
-	while(! (trig->wd & (1 << (j%7)))) j++;
+        ADVANCE_TO_WD(j, trig->wd);
 	return j;
 
     default:
@@ -408,6 +415,57 @@ static int GetNextTriggerDate(Trigger *trig, int start, int *err, int *nextstart
     return simple;
 }
 
+int
+AdjustTriggerForDuration(int today, int r, Trigger *trig, TimeTrig *tim, int save_in_globals)
+{
+    int y, m, d;
+    /* If we have an AT, save the original event start */
+    if (tim->ttime != NO_TIME) {
+	trig->eventstart = MINUTES_PER_DAY * r + tim->ttime;
+	if (tim->duration != NO_TIME) {
+	    trig->eventduration = tim->duration;
+	}
+    }
+
+    /* Now potentially adjust */
+    if (r < today && r + trig->duration_days >= today) {
+	/* Adjust duration down */
+	tim->duration -= (today - r) * MINUTES_PER_DAY;
+	tim->duration += tim->ttime;
+
+	/* Start at midnight */
+	tim->ttime = 0;
+
+	/* Change trigger date to today */
+	r = today;
+	if (DebugFlag & DB_PRTTRIG) {
+	    FromJulian(r, &y, &m, &d);
+	    fprintf(ErrFp, "%s(%d): Trig(adj) = %s, %d %s, %d",
+		    FileName, LineNo,
+		    DayName[r % 7],
+		    d,
+		    MonthName[m],
+		    y);
+	    if (tim->ttime != NO_TIME) {
+		fprintf(ErrFp, " AT %02d:%02d",
+			(tim->ttime / 60),
+			(tim->ttime % 60));
+		if (tim->duration != NO_TIME) {
+		    fprintf(ErrFp, " DURATION %02d:%02d",
+			    (tim->duration / 60),
+			    (tim->duration % 60));
+		}
+	    }
+	    fprintf(ErrFp, "\n");
+	}
+
+    }
+    if (save_in_globals) {
+	SaveAllTriggerInfo(trig, tim, r, tim->ttime, 1);
+    }
+    return r;
+}
+
 /***************************************************************/
 /*                                                             */
 /*  ComputeTrigger                                             */
@@ -416,10 +474,49 @@ static int GetNextTriggerDate(Trigger *trig, int start, int *err, int *nextstart
 /*  today's date.                                              */
 /*                                                             */
 /***************************************************************/
-int ComputeTrigger(int today, Trigger *trig, int *err, int save_in_globals)
+int ComputeTrigger(int today, Trigger *trig, TimeTrig *tim,
+		   int *err, int save_in_globals)
+{
+    int r = ComputeTriggerNoAdjustDuration(today, trig, tim, err, save_in_globals, 0);
+    if (*err != OK) {
+	return r;
+    }
+    if (r == today) {
+	if (tim->ttime != NO_TIME) {
+	    trig->eventstart = MINUTES_PER_DAY * r + tim->ttime;
+	    if (tim->duration != NO_TIME) {
+		trig->eventduration = tim->duration;
+	    }
+	}
+	if (save_in_globals) {
+	    SaveAllTriggerInfo(trig, tim, r, tim->ttime, 1);
+	}
+	return r;
+    }
+
+    if (trig->duration_days) {
+	r = ComputeTriggerNoAdjustDuration(today, trig, tim, err, save_in_globals, trig->duration_days);
+	if (*err != OK) {
+	    return r;
+	}
+    }
+    r = AdjustTriggerForDuration(today, r, trig, tim, save_in_globals);
+    return r;
+}
+
+/***************************************************************/
+/*                                                             */
+/*  ComputeTriggerNoAdjustDuration                             */
+/*                                                             */
+/*  Compute a trigger, but do NOT adjust the time trigger      */
+/*  duration.                                                  */
+/*                                                             */
+/***************************************************************/
+int ComputeTriggerNoAdjustDuration(int today, Trigger *trig, TimeTrig *tim,
+				   int *err, int save_in_globals, int duration_days)
 {
     int nattempts = 0,
-	start = today,
+	start = today - duration_days,
 	nextstart = 0,
 	y, m, d, omit,
 	result;
@@ -429,15 +526,25 @@ int ComputeTrigger(int today, Trigger *trig, int *err, int save_in_globals)
 	LastTrigValid = 0;
     }
 
-/* Assume everything works */
+    /* Assume everything works */
     *err = OK;
 
-/* But check for obvious problems... */
+    /* But check for obvious problems... */
     if (trig->localomit == 1 + 2 + 4 + 8 + 16 + 32 + 64) {
 	*err = E_2MANY_LOCALOMIT;
 	return -1;
     }
 
+    if (start < 0) {
+	*err = E_DATE_OVER;
+	return -1;
+    }
+
+    if (tim->duration != NO_TIME && tim->ttime == NO_TIME) {
+	*err = E_DURATION_NO_AT;
+	return -1;
+    }
+
     if (trig->rep != NO_REP &&
 	(trig->d == NO_DAY ||
 	 trig->m == NO_MON ||
@@ -448,6 +555,11 @@ int ComputeTrigger(int today, Trigger *trig, int *err, int save_in_globals)
     }
 
 
+    /* Save the trigger */
+    if (save_in_globals) {
+	SaveLastTrigger(trig);
+    }
+
     while (nattempts++ < TRIG_ATTEMPTS) {
 	result = GetNextTriggerDate(trig, start, err, &nextstart);
 
@@ -469,7 +581,9 @@ int ComputeTrigger(int today, Trigger *trig, int *err, int save_in_globals)
 	} else {
 	    omit = 0;
 	}
-	if (result >= today &&
+
+	/** FIXME: Fix bad interaction with SATISFY... need to rethink!!! */
+	if (result+duration_days >= today &&
 	    (trig->skip != SKIP_SKIP || !omit)) {
 	    if (save_in_globals) {
 		LastTriggerDate = result;  /* Save in global var */
@@ -477,12 +591,23 @@ int ComputeTrigger(int today, Trigger *trig, int *err, int save_in_globals)
 	    }
 	    if (DebugFlag & DB_PRTTRIG) {
 		FromJulian(result, &y, &m, &d);
-		fprintf(ErrFp, "%s(%d): Trig = %s, %d %s, %d\n",
+		fprintf(ErrFp, "%s(%d): Trig = %s, %d %s, %d",
 			FileName, LineNo,
 			DayName[result % 7],
 			d,
 			MonthName[m],
 			y);
+		if (tim->ttime != NO_TIME) {
+		    fprintf(ErrFp, " AT %02d:%02d",
+			    (tim->ttime / 60),
+			    (tim->ttime % 60));
+		    if (tim->duration != NO_TIME) {
+			fprintf(ErrFp, " DURATION %02d:%02d",
+			    (tim->duration / 60),
+			    (tim->duration % 60));
+		    }
+		}
+		fprintf(ErrFp, "\n");
 	    }
 	    return result;
 	}
@@ -535,3 +660,41 @@ int ComputeTrigger(int today, Trigger *trig, int *err, int save_in_globals)
     *err = E_CANT_TRIG;
     return -1;
 }
+
+/***************************************************************/
+/*                                                             */
+/*  ComputeScanStart                                            */
+/*                                                             */
+/*  Figure out where to start scan from by examining SCANFROM  */
+/*  and DURATION                                               */
+/*                                                             */
+/***************************************************************/
+int
+ComputeScanStart(int today, Trigger *trig, TimeTrig *tt)
+{
+    int minutes, days;
+
+    /* If we don't have a time/duration, just use scanfrom */
+    if (tt->ttime == NO_TIME ||
+	tt->duration == NO_TIME) {
+	if (trig->scanfrom == NO_DATE) {
+	    return today;
+	}
+	return trig->scanfrom;
+    }
+
+    /* Calculate time-based SCANFROM */
+    minutes = tt->ttime + tt->duration - 1;
+
+    /* Figure out how many days to scan backwards from */
+    days = minutes / MINUTES_PER_DAY;
+
+    if (trig->scanfrom != NO_DATE) {
+	if (trig->scanfrom <= today - days) {
+	    return trig->scanfrom;
+	} else {
+	    return today - days;
+	}
+    }
+    return today - days;
+}

src/types.h

@@ -5,7 +5,7 @@
 /*  Type definitions all dumped here.                          */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -68,7 +68,12 @@ typedef struct {
     int typ;
     int once;
     int scanfrom;
+    int from;
     int priority;
+    int duration_days;           /* Duration converted to days to search */
+    int eventstart;              /* Original event start (datetime) */
+    int eventduration;           /* Original event duration (minutes) */
+    int maybe_uncomputable;      /* Suppress "can't compute trigger" warnings */
     char sched[VAR_NAME_LEN+1];  /* Scheduling function */
     char warn[VAR_NAME_LEN+1];   /* Warning function    */
     char omitfunc[VAR_NAME_LEN+1]; /* OMITFUNC function */
@@ -87,16 +92,16 @@ typedef struct {
 
 /* The parse pointer */
 typedef struct {
-    char isnested;              /* Is it a nested expression? */
-    char allownested;
+    DynamicBuffer pushedToken;	/* Pushed-back token */
     char const *text;           /* Start of text */
     char const *pos;            /* Current position */
     char const *etext;          /* Substituted text */
     char const *epos;           /* Position in substituted text */
-    DynamicBuffer pushedToken;	/* Pushed-back token */
     char const *tokenPushed;	/* NULL if no pushed-back token */
-    char expr_happened;         /* Did we encounter an [expression] ? */
-    char nonconst_expr;         /* Did we encounter a non-constant [expression] ? */
+    unsigned char isnested;      /* Is it a nested expression? */
+    unsigned char allownested;
+    unsigned char expr_happened; /* Did we encounter an [expression] ? */
+    unsigned char nonconst_expr; /* Did we encounter a non-constant [expression] ? */
 } Parser;
 
 typedef Parser *ParsePtr;  /* Pointer to parser structure */
@@ -167,7 +172,8 @@ enum TokTypes
   T_Duration,
   T_LongTime,
   T_OmitFunc,
-  T_Through
+  T_Through,
+  T_MaybeUncomputable
 };
 
 /* The structure of a token */
@@ -212,3 +218,18 @@ typedef struct {
 /* Flags for FROM / SCANFROM */
 #define SCANFROM_TYPE 0
 #define FROM_TYPE     1
+
+/* PS Calendar levels */
+
+/* Original interchange format */
+#define PSCAL_LEVEL1  1
+
+/* Line-by-line JSON */
+#define PSCAL_LEVEL2  2
+
+/* Pure JSON */
+#define PSCAL_LEVEL3  3
+
+#define TERMINAL_BACKGROUND_UNKNOWN 0
+#define TERMINAL_BACKGROUND_DARK    1
+#define TERMINAL_BACKGROUND_LIGHT   2

src/userfns.c

@@ -6,7 +6,7 @@
 /*  functions.                                                 */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -64,6 +64,7 @@ int DoFset(ParsePtr p)
     int c;
     UserFunc *func;
     Var *v;
+    int orig_namelen;
 
     DynamicBuffer buf;
     DBufInit(&buf);
@@ -74,6 +75,7 @@ int DoFset(ParsePtr p)
 	DBufFree(&buf);
 	return E_BAD_ID;
     }
+    orig_namelen = buf.len;
 
     /* Should be followed by '(' */
     c = ParseNonSpaceChar(p, &r, 0);
@@ -94,9 +96,8 @@ int DoFset(ParsePtr p)
     StrnCpy(func->name, DBufValue(&buf), VAR_NAME_LEN);
     DBufFree(&buf);
     if (!Hush) {
-	if (FindFunc(DBufValue(&buf), Func, NumFuncs)) {
-	    Eprint("%s: `%s'", ErrMsg[E_REDEF_FUNC],
-		   DBufValue(&buf));
+	if (FindFunc(func->name, Func, NumFuncs)) {
+	    Eprint("%s: `%s'", ErrMsg[E_REDEF_FUNC], func->name);
 	}
     }
     func->locals = NULL;
@@ -118,6 +119,7 @@ int DoFset(ParsePtr p)
 	    if ( (r=ParseIdentifier(p, &buf)) ) return r;
 	    if (*DBufValue(&buf) == '$') {
 		DBufFree(&buf);
+		DestroyUserFunc(func);
 		return E_BAD_ID;
 	    }
 	    v = NEW(Var);
@@ -164,6 +166,10 @@ int DoFset(ParsePtr p)
 
     /* Add the function definition */
     FSet(func);
+    if (orig_namelen > VAR_NAME_LEN) {
+	Eprint("Warning: Function name `%s...' truncated to `%s'",
+	       func->name, func->name);
+    }
     return OK;
 }
 
@@ -273,7 +279,7 @@ int CallUserFunc(char const *name, int nargs, ParsePtr p)
 	}
 	return E_RECURSIVE;
     }
-   
+
     /* Check number of args */
     if (nargs != f->nargs) {
 	if (DebugFlag &DB_PRTEXPR) {

src/utils.c

@@ -5,7 +5,7 @@
 /*  Useful utility functions.                                  */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -123,3 +123,26 @@ int DateOK(int y, int m, int d)
 	d > DaysInMonth(m, y) ) return 0;
     else return 1;
 }
+
+/* Functions designed to defeat gcc optimizer */
+
+int _private_div(int a, int b) { return a/b; }
+int _private_add_overflow(int result, int b, int old)
+{
+    if (b > 0 && result < old) return 1;
+    if (b < 0 && result > old) return 1;
+    return 0;
+}
+int _private_sub_overflow(int result, int b, int old)
+{
+    if (b < 0 && result < old) return 1;
+    if (b > 0 && result > old) return 1;
+    return 0;
+}
+
+int _private_unminus_overflow(int a, int b)
+{
+    if (a > 0 && b > 0) return 1;
+    if (a < 0 && b < 0) return 1;
+    return 0;
+}

src/var.c

@@ -6,7 +6,7 @@
 /*  user- and system-defined variables.                        */
 /*                                                             */
 /*  This file is part of REMIND.                               */
-/*  Copyright (C) 1992-2018 by Dianne Skoll                    */
+/*  Copyright (C) 1992-2021 by Dianne Skoll                    */
 /*                                                             */
 /***************************************************************/
 
@@ -17,6 +17,7 @@
 #include <ctype.h>
 
 #include <stdlib.h>
+#include <limits.h>
 #include "types.h"
 #include "expr.h"
 #include "globals.h"
@@ -31,12 +32,16 @@
 #define VALUE    ErrMsg[E_VAL]
 #define UNDEF	 ErrMsg[E_UNDEF]
 
+static int IntMin = INT_MIN;
+static int IntMax = INT_MAX;
+
 static Var *VHashTbl[VAR_HASH_SIZE];
 
 typedef int (*SysVarFunc)(int, Value *);
 
 static int trig_date_func(int do_set, Value *val)
 {
+    UNUSED(do_set);
     val->type = DATE_TYPE;
     if (!LastTrigValid) {
 	val->v.val = 0;
@@ -48,6 +53,7 @@ static int trig_date_func(int do_set, Value *val)
 static int trig_day_func(int do_set, Value *val)
 {
     int y, m, d;
+    UNUSED(do_set);
     val->type = INT_TYPE;
     if (!LastTrigValid) {
 	val->v.val = -1;
@@ -62,6 +68,7 @@ static int trig_day_func(int do_set, Value *val)
 static int trig_mon_func(int do_set, Value *val)
 {
     int y, m, d;
+    UNUSED(do_set);
     val->type = INT_TYPE;
     if (!LastTrigValid) {
 	val->v.val = -1;
@@ -76,6 +83,7 @@ static int trig_mon_func(int do_set, Value *val)
 static int trig_year_func(int do_set, Value *val)
 {
     int y, m, d;
+    UNUSED(do_set);
     val->type = INT_TYPE;
     if (!LastTrigValid) {
 	val->v.val = -1;
@@ -90,6 +98,7 @@ static int trig_year_func(int do_set, Value *val)
 static int trig_wday_func(int do_set, Value *val)
 {
     val->type = INT_TYPE;
+    UNUSED(do_set);
     if (!LastTrigValid) {
 	val->v.val = -1;
 	return OK;
@@ -101,6 +110,7 @@ static int trig_wday_func(int do_set, Value *val)
 
 static int today_date_func(int do_set, Value *val)
 {
+    UNUSED(do_set);
     val->type = DATE_TYPE;
     val->v.val = JulianToday;
     return OK;
@@ -108,6 +118,7 @@ static int today_date_func(int do_set, Value *val)
 static int today_day_func(int do_set, Value *val)
 {
     int y, m, d;
+    UNUSED(do_set);
     val->type = INT_TYPE;
     FromJulian(JulianToday, &y, &m, &d);
     val->v.val = d;
@@ -117,6 +128,7 @@ static int today_day_func(int do_set, Value *val)
 static int today_mon_func(int do_set, Value *val)
 {
     int y, m, d;
+    UNUSED(do_set);
     val->type = INT_TYPE;
     FromJulian(JulianToday, &y, &m, &d);
     val->v.val = m+1;
@@ -126,6 +138,7 @@ static int today_mon_func(int do_set, Value *val)
 static int today_year_func(int do_set, Value *val)
 {
     int y, m, d;
+    UNUSED(do_set);
     val->type = INT_TYPE;
     FromJulian(JulianToday, &y, &m, &d);
     val->v.val = y;
@@ -134,6 +147,7 @@ static int today_year_func(int do_set, Value *val)
 
 static int today_wday_func(int do_set, Value *val)
 {
+    UNUSED(do_set);
     val->type = INT_TYPE;
     val->v.val = (JulianToday + 1) % 7;
     return OK;
@@ -158,6 +172,45 @@ static int datetime_sep_func(int do_set, Value *val)
     return OK;
 }
 
+static int default_color_func(int do_set, Value *val)
+{
+    int col_r, col_g, col_b;
+    if (!do_set) {
+    /* 12 = strlen("255 255 255\0") */
+ val->v.str = malloc(12);
+ if (!val->v.str) return E_NO_MEM;
+    snprintf(val->v.str, 12, "%d %d %d",
+        DefaultColorR,
+        DefaultColorG,
+        DefaultColorB
+        );
+ val->type = STR_TYPE;
+ return OK;
+    }
+    if (val->type != STR_TYPE) return E_BAD_TYPE;
+    if (sscanf(val->v.str, "%d %d %d", &col_r, &col_g, &col_b) != 3) {
+        return E_BAD_TYPE;
+    }
+    /* They either all have to be -1, or all between 0 and 255 */
+    if (col_r == -1 && col_g == -1 && col_b == -1) {
+	DefaultColorR = -1;
+	DefaultColorG = -1;
+	DefaultColorB = -1;
+	return OK;
+    }
+    if (col_r < 0) return E_2LOW;
+    if (col_r > 255) return E_2HIGH;
+    if (col_g < 0) return E_2LOW;
+    if (col_g > 255) return E_2HIGH;
+    if (col_b < 0) return E_2LOW;
+    if (col_b > 255) return E_2HIGH;
+
+    DefaultColorR = col_r;
+    DefaultColorG = col_g;
+    DefaultColorB = col_b;
+    return OK;
+}
+
 static int date_sep_func(int do_set, Value *val)
 {
     if (!do_set) {
@@ -360,6 +413,10 @@ int DoSet (Parser *p)
 
     if (*DBufValue(&buf) == '$') r = SetSysVar(DBufValue(&buf)+1, &v);
     else r = SetVar(DBufValue(&buf), &v);
+    if (buf.len > VAR_NAME_LEN) {
+	Eprint("Warning: Variable name `%.*s...' truncated to `%.*s'",
+	       VAR_NAME_LEN, DBufValue(&buf), VAR_NAME_LEN, DBufValue(&buf));
+    }
     DBufFree(&buf);
     return r;
 }
@@ -422,17 +479,17 @@ int DoDump(ParsePtr p)
 	DumpVarTable();
 	return OK;
     }
-    fprintf(ErrFp, "%*s  %s\n\n", VAR_NAME_LEN, VARIABLE, VALUE);
+    fprintf(ErrFp, "%s  %s\n\n", VARIABLE, VALUE);
     while(1) {
 	if (*DBufValue(&buf) == '$') {
 	    DumpSysVarByName(DBufValue(&buf)+1);
 	} else {
 	    v = FindVar(DBufValue(&buf), 0);
 	    DBufValue(&buf)[VAR_NAME_LEN] = 0;
-	    if (!v) fprintf(ErrFp, "%*s  %s\n", VAR_NAME_LEN,
+	    if (!v) fprintf(ErrFp, "%s  %s\n",
 			    DBufValue(&buf), UNDEF);
 	    else {
-		fprintf(ErrFp, "%*s  ", VAR_NAME_LEN, v->name);
+		fprintf(ErrFp, "%s  ", v->name);
 		PrintValue(&(v->v), ErrFp);
 		fprintf(ErrFp, "\n");
 	    }
@@ -460,12 +517,12 @@ void DumpVarTable(void)
     register Var *v;
     register int i;
 
-    fprintf(ErrFp, "%*s  %s\n\n", VAR_NAME_LEN, VARIABLE, VALUE);
+    fprintf(ErrFp, "%s  %s\n\n", VARIABLE, VALUE);
 
     for (i=0; i<VAR_HASH_SIZE; i++) {
 	v = VHashTbl[i];
 	while(v) {
-	    fprintf(ErrFp, "%*s  ", VAR_NAME_LEN, v->name);
+	    fprintf(ErrFp, "%s  ", v->name);
 	    PrintValue(&(v->v), ErrFp);
 	    fprintf(ErrFp, "\n");
 	    v = v->next;
@@ -594,6 +651,7 @@ static SysVar SysVarArr[] = {
     {"Daemon",         0,  INT_TYPE,     &Daemon,             0,      0   },
     {"DateSep",        1,  SPECIAL_TYPE, date_sep_func,       0,      0   },
     {"DateTimeSep",    1,  SPECIAL_TYPE, datetime_sep_func,   0,      0   },
+    {"DefaultColor",   1,  SPECIAL_TYPE, default_color_func,  0,      0   },
     {"DefaultPrio",    1,  INT_TYPE,     &DefaultPrio,        0,      9999},
     {"DeltaOffset",    0,  INT_TYPE,     &DeltaOffset,        0,      0   },
     {"DontFork",       0,  INT_TYPE,     &DontFork,           0,      0   },
@@ -603,10 +661,12 @@ static SysVar SysVarArr[] = {
     {"EndSentIg",      1,  STR_TYPE,     &EndSentIg,          0,      0   },
     {"FirstIndent",    1,  INT_TYPE,     &FirstIndent,        0,      132 },
     {"FoldYear",       1,  INT_TYPE,     &FoldYear,           0,      1   },
-    {"FormWidth",      1,  INT_TYPE,     &FormWidth,          20,     132 },
+    {"FormWidth",      1,  INT_TYPE,     &FormWidth,          20,     500 },
     {"HushMode",       0,  INT_TYPE,     &Hush,               0,      0   },
     {"IgnoreOnce",     0,  INT_TYPE,     &IgnoreOnce,         0,      0   },
     {"InfDelta",       0,  INT_TYPE,     &InfiniteDelta,      0,      0   },
+    {"IntMax",         0,  INT_TYPE,     &IntMax,             0,      0   },
+    {"IntMin",         0,  INT_TYPE,     &IntMin,             0,      0   },
     {"LatDeg",         1,  INT_TYPE,     &LatDeg,             -90,    90  },
     {"LatMin",         1,  INT_TYPE,     &LatMin,             -59,    59  },
     {"LatSec",         1,  INT_TYPE,     &LatSec,             -59,    59  },
@@ -748,7 +808,7 @@ static SysVar *FindSysVar(char const *name)
 /***************************************************************/
 void DumpSysVarByName(char const *name)
 {
-    int i;
+    size_t i;
     SysVar *v;
 
     if (!name || !*name) {
@@ -781,7 +841,7 @@ static void DumpSysVar(char const *name, const SysVar *v)
 	return;
     }
     if (name) strcat(buffer, name); else strcat(buffer, v->name);
-    fprintf(ErrFp, "%*s  ", VAR_NAME_LEN+1, buffer);
+    fprintf(ErrFp, "%16s  ", buffer);
     if (v) {
 	if (v->type == SPECIAL_TYPE) {
 	    Value val;

sync-to-dianne-git

@@ -0,0 +1,8 @@
+#!/bin/sh
+cd /home/dfs/Software/Remind.git || exit 1
+
+rm -f .git/COMMIT_EDITMSG .git/*~
+
+git update-server-info && cd .git && rsync --exclude HEADER.html --archive --verbose --progress --delete ./ dianne.skoll.ca:web/projects/remind/git/Remind.git/
+exit $?
+

tests/shade.rem

@@ -28,3 +28,5 @@ REM Fri SPECIAL SHADE 255 204 204
 REM Sat SPECIAL SHADE 204 255 204
 REM Sun SPECIAL SHADE 204 204 255
 
+# This should be ignored by rem2ps
+REM SPECIAL HTML <b>FOO</b>

tests/test-rem

@@ -7,13 +7,22 @@
 # in the build directory.
 #
 # This file is part of REMIND.
-# Copyright (C) 1992-2018 Dianne Skoll
+# Copyright (C) 1992-2021 Dianne Skoll
 # ---------------------------------------------------------------------------
 
 DIR=`dirname $0`
 cd $DIR
 if test $? != 0 ; then
+    echo ""
     echo "Unable to cd $DIR" >&2
+    echo ""
+    exit 1
+fi
+
+if test `id -u` = 0 ; then
+    echo ""
+    echo "*** Please do not run the test suite as root; it will fail."
+    echo ""
     exit 1
 fi
 
@@ -56,6 +65,14 @@ echo "" >> ../tests/test.out
 
 chmod 644 include_dir/04cantread.rem
 
+# Feb 29 bug
+echo "Feb 29 Bug Test" >> ../tests/test.out
+echo 'REM Sun 29 Feb MSG [$T]' | ../src/remind -dt - 1 feb 2021 >> ../tests/test.out 2>&1
+
+# Day Weekday Year out-of-year bug
+echo "Mon 31 Dec Bug Test" >> ../tests/test.out
+echo 'REM Mon 31 2021 MSG [$T]' | ../src/remind -dt - 31 dec 2021 >> ../tests/test.out 2>&1
+
 echo "Color Test" >> ../tests/test.out
 ../src/remind -ccl ../tests/colors.rem 1 aug 2007 >> ../tests/test.out 2>&1
 
@@ -79,6 +96,7 @@ rm -f ../tests/purge_dir/*.rem.purged >> ../tests/test.out 2>&1
 ../src/remind ../tests/runtest.rem >> ../tests/test.out 2>&1
 
 ../src/remind -p ../tests/shade.rem 1 August 2009 | ../src/rem2ps -e -l -c3 >> ../tests/test.out 2>&1
+../src/remind -pp ../tests/shade.rem 1 August 2009 | ../src/rem2ps -e -l -c3 >> ../tests/test.out 2>&1
 
 # The sun tests can fail due to math roundoff error changing the times
 # by a minute...
@@ -99,7 +117,207 @@ REM 1 Jan 2012 AT 10:00 MSG 10am: Should show up
 MSG [$DontTrigAts]
 EOF
 
+# An 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
 
+# Test default color
+../src/remind -ppp - 1 Jan 2012 9:00 <<'EOF' >> ../tests/test.out 2>&1
+REM 2 MSG Normal
+SET $DefaultColor "255 0 0"
+REM 3 MSG Red
+SET $DefaultColor "-1 -1 -1"
+REM 4 MSG Normal
+# Should give an error
+SET $DefaultColor "256 0 0"
+EOF
+
+# Test -@ option
+../src/remind -w,0,0 -@0 -c - 1 Jan 2020 <<'EOF' >> ../tests/test.out 2>&1
+rem 1 SPECIAL COLOR 0   0   0 BLACK
+rem 2 SPECIAL COLOR 0   0  65 BLUE
+rem 3 SPECIAL COLOR 0  65   0 GREEN
+rem 4 SPECIAL COLOR 0  65  65 CYAN
+rem 5 msg -@0
+rem 15 SPECIAL COLOR 65  0   0 RED
+rem 16 SPECIAL COLOR 65  0  65 MAGENTA
+rem 17 SPECIAL COLOR 65 65   0 YELLOW
+rem 18 SPECIAL COLOR 65 65  65 WHITE
+rem 8 SPECIAL COLOR 0   0   0 BLACK
+rem 9 SPECIAL COLOR 0   0  200 BRIGHT BLUE
+rem 10 SPECIAL COLOR 0  200   0 BRIGHT GREEN
+rem 11 SPECIAL COLOR 0  200  200 BRIGHT CYAN
+rem 22 SPECIAL COLOR 200  0   0 BRIGHT RED
+rem 23 SPECIAL COLOR 200  0  200 BRIGHT MAGENTA
+rem 24 SPECIAL COLOR 200 200   0 BRIGHT YELLOW
+rem 25 SPECIAL COLOR 200 200  200 BRIGHT WHITE
+EOF
+../src/remind -w,0,0 -@0,0 -c - 1 Jan 2020 <<'EOF' >> ../tests/test.out 2>&1
+rem 1 SPECIAL COLOR 0   0   0 BLACK
+rem 2 SPECIAL COLOR 0   0  65 BLUE
+rem 3 SPECIAL COLOR 0  65   0 GREEN
+rem 4 SPECIAL COLOR 0  65  65 CYAN
+rem 5 msg -@0,0
+rem 15 SPECIAL COLOR 65  0   0 RED
+rem 16 SPECIAL COLOR 65  0  65 MAGENTA
+rem 17 SPECIAL COLOR 65 65   0 YELLOW
+rem 18 SPECIAL COLOR 65 65  65 WHITE
+rem 8 SPECIAL COLOR 0   0   0 BLACK
+rem 9 SPECIAL COLOR 0   0  200 BRIGHT BLUE
+rem 10 SPECIAL COLOR 0  200   0 BRIGHT GREEN
+rem 11 SPECIAL COLOR 0  200  200 BRIGHT CYAN
+rem 22 SPECIAL COLOR 200  0   0 BRIGHT RED
+rem 23 SPECIAL COLOR 200  0  200 BRIGHT MAGENTA
+rem 24 SPECIAL COLOR 200 200   0 BRIGHT YELLOW
+rem 25 SPECIAL COLOR 200 200  200 BRIGHT WHITE
+EOF
+../src/remind -w,0,0 -@0,1 -c - 1 Jan 2020 <<'EOF' >> ../tests/test.out 2>&1
+rem 1 SPECIAL COLOR 0   0   0 BLACK
+rem 2 SPECIAL COLOR 0   0  65 BLUE
+rem 3 SPECIAL COLOR 0  65   0 GREEN
+rem 4 SPECIAL COLOR 0  65  65 CYAN
+rem 5 msg -@0,1
+rem 15 SPECIAL COLOR 65  0   0 RED
+rem 16 SPECIAL COLOR 65  0  65 MAGENTA
+rem 17 SPECIAL COLOR 65 65   0 YELLOW
+rem 18 SPECIAL COLOR 65 65  65 WHITE
+rem 8 SPECIAL COLOR 0   0   0 BLACK
+rem 9 SPECIAL COLOR 0   0  200 BRIGHT BLUE
+rem 10 SPECIAL COLOR 0  200   0 BRIGHT GREEN
+rem 11 SPECIAL COLOR 0  200  200 BRIGHT CYAN
+rem 22 SPECIAL COLOR 200  0   0 BRIGHT RED
+rem 23 SPECIAL COLOR 200  0  200 BRIGHT MAGENTA
+rem 24 SPECIAL COLOR 200 200   0 BRIGHT YELLOW
+rem 25 SPECIAL COLOR 200 200  200 BRIGHT WHITE
+EOF
+../src/remind -w,0,0 -@1 -c - 1 Jan 2020 <<'EOF' >> ../tests/test.out 2>&1
+rem 1 SPECIAL COLOR 0   0   0 BLACK
+rem 2 SPECIAL COLOR 0   0  65 BLUE
+rem 3 SPECIAL COLOR 0  65   0 GREEN
+rem 4 SPECIAL COLOR 0  65  65 CYAN
+rem 5 msg -@1
+rem 15 SPECIAL COLOR 65  0   0 RED
+rem 16 SPECIAL COLOR 65  0  65 MAGENTA
+rem 17 SPECIAL COLOR 65 65   0 YELLOW
+rem 18 SPECIAL COLOR 65 65  65 WHITE
+rem 8 SPECIAL COLOR 0   0   0 BLACK
+rem 9 SPECIAL COLOR 0   0  200 BRIGHT BLUE
+rem 10 SPECIAL COLOR 0  200   0 BRIGHT GREEN
+rem 11 SPECIAL COLOR 0  200  200 BRIGHT CYAN
+rem 22 SPECIAL COLOR 200  0   0 BRIGHT RED
+rem 23 SPECIAL COLOR 200  0  200 BRIGHT MAGENTA
+rem 24 SPECIAL COLOR 200 200   0 BRIGHT YELLOW
+rem 25 SPECIAL COLOR 200 200  200 BRIGHT WHITE
+EOF
+../src/remind -w,0,0 -@1,0 -c - 1 Jan 2020 <<'EOF' >> ../tests/test.out 2>&1
+rem 1 SPECIAL COLOR 0   0   0 BLACK
+rem 2 SPECIAL COLOR 0   0  65 BLUE
+rem 3 SPECIAL COLOR 0  65   0 GREEN
+rem 4 SPECIAL COLOR 0  65  65 CYAN
+rem 5 msg -@1,0
+rem 15 SPECIAL COLOR 65  0   0 RED
+rem 16 SPECIAL COLOR 65  0  65 MAGENTA
+rem 17 SPECIAL COLOR 65 65   0 YELLOW
+rem 18 SPECIAL COLOR 65 65  65 WHITE
+rem 8 SPECIAL COLOR 0   0   0 BLACK
+rem 9 SPECIAL COLOR 0   0  200 BRIGHT BLUE
+rem 10 SPECIAL COLOR 0  200   0 BRIGHT GREEN
+rem 11 SPECIAL COLOR 0  200  200 BRIGHT CYAN
+rem 22 SPECIAL COLOR 200  0   0 BRIGHT RED
+rem 23 SPECIAL COLOR 200  0  200 BRIGHT MAGENTA
+rem 24 SPECIAL COLOR 200 200   0 BRIGHT YELLOW
+rem 25 SPECIAL COLOR 200 200  200 BRIGHT WHITE
+EOF
+../src/remind -w,0,0 -@1,1 -c - 1 Jan 2020 <<'EOF' >> ../tests/test.out 2>&1
+rem 1 SPECIAL COLOR 0   0   0 BLACK
+rem 2 SPECIAL COLOR 0   0  65 BLUE
+rem 3 SPECIAL COLOR 0  65   0 GREEN
+rem 4 SPECIAL COLOR 0  65  65 CYAN
+rem 5 msg -@1,1
+rem 15 SPECIAL COLOR 65  0   0 RED
+rem 16 SPECIAL COLOR 65  0  65 MAGENTA
+rem 17 SPECIAL COLOR 65 65   0 YELLOW
+rem 18 SPECIAL COLOR 65 65  65 WHITE
+rem 8 SPECIAL COLOR 0   0   0 BLACK
+rem 9 SPECIAL COLOR 0   0  200 BRIGHT BLUE
+rem 10 SPECIAL COLOR 0  200   0 BRIGHT GREEN
+rem 11 SPECIAL COLOR 0  200  200 BRIGHT CYAN
+rem 22 SPECIAL COLOR 200  0   0 BRIGHT RED
+rem 23 SPECIAL COLOR 200  0  200 BRIGHT MAGENTA
+rem 24 SPECIAL COLOR 200 200   0 BRIGHT YELLOW
+rem 25 SPECIAL COLOR 200 200  200 BRIGHT WHITE
+EOF
+../src/remind -w,0,0 -@2 -c - 1 Jan 2020 <<'EOF' >> ../tests/test.out 2>&1
+rem 1 SPECIAL COLOR 0   0   0 BLACK
+rem 2 SPECIAL COLOR 0   0  65 BLUE
+rem 3 SPECIAL COLOR 0  65   0 GREEN
+rem 4 SPECIAL COLOR 0  65  65 CYAN
+rem 5 msg -@2
+rem 15 SPECIAL COLOR 65  0   0 RED
+rem 16 SPECIAL COLOR 65  0  65 MAGENTA
+rem 17 SPECIAL COLOR 65 65   0 YELLOW
+rem 18 SPECIAL COLOR 65 65  65 WHITE
+rem 8 SPECIAL COLOR 0   0   0 BLACK
+rem 9 SPECIAL COLOR 0   0  200 BRIGHT BLUE
+rem 10 SPECIAL COLOR 0  200   0 BRIGHT GREEN
+rem 11 SPECIAL COLOR 0  200  200 BRIGHT CYAN
+rem 22 SPECIAL COLOR 200  0   0 BRIGHT RED
+rem 23 SPECIAL COLOR 200  0  200 BRIGHT MAGENTA
+rem 24 SPECIAL COLOR 200 200   0 BRIGHT YELLOW
+rem 25 SPECIAL COLOR 200 200  200 BRIGHT WHITE
+EOF
+../src/remind -w,0,0 -@2,0 -c - 1 Jan 2020 <<'EOF' >> ../tests/test.out 2>&1
+rem 1 SPECIAL COLOR 0   0   0 BLACK
+rem 2 SPECIAL COLOR 0   0  65 BLUE
+rem 3 SPECIAL COLOR 0  65   0 GREEN
+rem 4 SPECIAL COLOR 0  65  65 CYAN
+rem 5 msg -@2,0
+rem 15 SPECIAL COLOR 65  0   0 RED
+rem 16 SPECIAL COLOR 65  0  65 MAGENTA
+rem 17 SPECIAL COLOR 65 65   0 YELLOW
+rem 18 SPECIAL COLOR 65 65  65 WHITE
+rem 8 SPECIAL COLOR 0   0   0 BLACK
+rem 9 SPECIAL COLOR 0   0  200 BRIGHT BLUE
+rem 10 SPECIAL COLOR 0  200   0 BRIGHT GREEN
+rem 11 SPECIAL COLOR 0  200  200 BRIGHT CYAN
+rem 22 SPECIAL COLOR 200  0   0 BRIGHT RED
+rem 23 SPECIAL COLOR 200  0  200 BRIGHT MAGENTA
+rem 24 SPECIAL COLOR 200 200   0 BRIGHT YELLOW
+rem 25 SPECIAL COLOR 200 200  200 BRIGHT WHITE
+EOF
+../src/remind -w,0,0 -@2,1 -c - 1 Jan 2020 <<'EOF' >> ../tests/test.out 2>&1
+rem 1 SPECIAL COLOR 0   0   0 BLACK
+rem 2 SPECIAL COLOR 0   0  65 BLUE
+rem 3 SPECIAL COLOR 0  65   0 GREEN
+rem 4 SPECIAL COLOR 0  65  65 CYAN
+rem 5 msg -@2,1
+rem 15 SPECIAL COLOR 65  0   0 RED
+rem 16 SPECIAL COLOR 65  0  65 MAGENTA
+rem 17 SPECIAL COLOR 65 65   0 YELLOW
+rem 18 SPECIAL COLOR 65 65  65 WHITE
+rem 8 SPECIAL COLOR 0   0   0 BLACK
+rem 9 SPECIAL COLOR 0   0  200 BRIGHT BLUE
+rem 10 SPECIAL COLOR 0  200   0 BRIGHT GREEN
+rem 11 SPECIAL COLOR 0  200  200 BRIGHT CYAN
+rem 22 SPECIAL COLOR 200  0   0 BRIGHT RED
+rem 23 SPECIAL COLOR 200  0  200 BRIGHT MAGENTA
+rem 24 SPECIAL COLOR 200 200   0 BRIGHT YELLOW
+rem 25 SPECIAL COLOR 200 200  200 BRIGHT WHITE
+EOF
+
+# If we're already in a utf-8 locale, do
+# nothing
+
+if ! echo $LC_ALL | grep -i utf-8 > /dev/null 2>&1 ; then
+    export LC_ALL=en_US.utf-8
+fi
+
+if ! echo $LANG | grep -i utf-8 > /dev/null 2>&1 ; then
+    export LANG=en_US.utf-8
+fi
+
+../src/remind -w128 -c ../tests/utf-8.rem 1 Nov 2019 >> ../tests/test.out
 cmp -s ../tests/test.out ../tests/test.cmp
 if [ "$?" = "0" ]; then
    echo "Remind:  Acceptance test PASSED"

tests/test.rem

@@ -5,6 +5,9 @@
 #
 # 	./test-rem  # From WITHIN Remind source directory!
 
+# Should issue a warning
+fset year(x) 1
+
 # Don't evaluate SATISFY expressions if reminder has expired
 
 REM Wed UNTIL 15 Feb 1991 SATISFY [trigdate() > '1990-01-01'] MSG wookie
@@ -169,6 +172,10 @@ REM Fri SCANFROM [trigger(today()-7)] SATISFY 1
 OMIT [trigger(trigdate())]
 REM Fri after MSG 16 Feb 1991
 CLEAR-OMIT-CONTEXT
+REM Fri SCANFROM -7 SATISFY 1
+OMIT [trigger(trigdate())]
+REM Fri after MSG 16 Feb 1991
+CLEAR-OMIT-CONTEXT
 
 # Test omitfunc
 fset _ofunc(x) (day(x) < 7 || day(x) % 2)
@@ -306,6 +313,77 @@ set a082 slide('1991-03-01', 7, "Sat", "Sun")
 set a083 slide('1991-04-01', -7, "Sat")
 set a084 nonomitted('1991-03-01', '1991-03-13', "Sat", "Sun")
 set a085 nonomitted('1991-03-24', '1991-04-01', "Sat")
+REM 2010-09-03 +3 -4 UNTIL 2012-01-01 PRIORITY 7 *14 MSG foo
+set a086 trigback()
+set a087 trigdelta()
+set a088 trigrep()
+set a089 triguntil()
+set a090 trigscanfrom()
+set a091 trigfrom()
+set a092 trigpriority()
+set a093 trigtimedelta()
+set a094 trigtimerep()
+set a095 trigduration()
+
+REM Mon Wed FROM 2010-09-03 ++3 --4 MSG foo
+set a096 trigback()
+set a097 trigdelta()
+set a098 trigrep()
+set a099 triguntil()
+set a100 trigscanfrom()
+set a101 trigfrom()
+set a102 trigpriority()
+set a103 trigtimedelta()
+set a104 trigtimerep()
+set a105 trigduration()
+
+REM 2010-09-03 +3 -4 UNTIL 2012-01-01 PRIORITY 7 *14 AT 14:41 +15 *2 DURATION 213 MSG foo
+set a106 trigback()
+set a107 trigdelta()
+set a108 trigrep()
+set a109 triguntil()
+set a110 trigscanfrom()
+set a111 trigfrom()
+set a112 trigpriority()
+set a113 trigtimedelta()
+set a114 trigtimerep()
+set a115 trigduration()
+
+REM Mon Wed FROM 2010-09-03 ++3 --4 AT 14:44 MSG foo
+set a116 trigback()
+set a117 trigdelta()
+set a118 trigrep()
+set a119 triguntil()
+set a120 trigscanfrom()
+set a121 trigfrom()
+set a122 trigpriority()
+set a123 trigtimedelta()
+set a124 trigtimerep()
+set a125 trigduration()
+
+# Test adding TIME+TIME and DATETIME+TIME
+set a126 11:00 + 3:00
+set a127 23:00 + 5:30
+set a128 '2018-02-03@10:00' + 6:45
+set a129 23:30 + '2019-02-02@16:44'
+
+# Multi-day reminder
+REM 13 AT 16:00 DURATION 72:00 MSG 72-hour event
+set a130 trigdate()
+set a131 trigtime()
+set a132 trigdatetime()
+set a133 trigduration()
+set a134 trigeventstart()
+set a135 trigeventduration()
+
+# These will issue errors
+REM Mon OMIT Mon SKIP MSG Never ever ever...
+REM Mon SATISFY [wkdaynum($T) == 3] MSG Nope nope...
+
+# These will just silently not trigger
+REM MAYBE-UNCOMPUTABLE Mon OMIT Mon SKIP MSG Never ever ever...
+REM MAYBE-UNCOMPUTABLE Mon SATISFY [wkdaynum($T) == 3] MSG Nope nope...
+
 dump
 dump $aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
 OMIT 2010-09-03 THROUGH 2010-09-15
@@ -313,7 +391,173 @@ OMIT December 25 MSG X
 # Next should give a parse error
 OMIT 26 Dec 2010 THROUGH 27 Dec 2010 MSG This is not legal
 OMIT DUMP
+# Regression test for bugfix in Hebrew calendar Adar jahrzeit
+[_i(14, "Adar", today(), 5761)] MSG Purim
+
+# Regression test for bug found by Larry Hynes
+REM SATISFY [day(trigdate()-25) == 14] MSG Foo
+
+# Check combo of SATISFY and long-duration events
+REM 14 SATISFY [$Tw == 4] MSG Thursday, the 14th
+REM 14 AT 16:00 DURATION 8:00 SATISFY [$Tw == 4] MSG Thursday, the 14th
+REM 14 AT 16:00 DURATION 8:01 SATISFY [$Tw == 4] MSG Thursday, the 14th
+REM 14 AT 16:00 DURATION 32:00 SATISFY [$Tw == 4] MSG Thursday, the 14th
+REM 14 AT 16:00 DURATION 32:01 SATISFY [$Tw == 4] MSG Thursday, the 14th
+REM 14 AT 16:00 DURATION 40:00 SATISFY [$Tw == 4] MSG Thursday, the 14th
+
+# This is now an error
+REM DURATION 15:00 MSG Should fail... need AT if you have DURATION.
+
+# Parsing of AM/PM times
+REM AT 0:00am MSG foo 0a
+REM AT 1:00AM MSG foo 1a
+REM AT 2:00am MSG foo 2a
+REM AT 3:00AM MSG foo 3a
+REM AT 4:00am MSG foo 4a
+REM AT 5:00AM MSG foo 5a
+REM AT 6:00am MSG foo 6a
+REM AT 7:00AM MSG foo 7a
+REM AT 8:00am MSG foo 8a
+REM AT 9:00AM MSG foo 9a
+REM AT 10:00am MSG foo 10a
+REM AT 11:00AM MSG foo 11a
+REM AT 12:00am MSG foo 12a
+REM AT 13:00AM MSG foo 13a
+REM AT 0:00pm MSG foo 0p
+REM AT 1:00PM MSG foo 1p
+REM AT 2:00pm MSG foo 2p
+REM AT 3:00PM MSG foo 3p
+REM AT 4:00pm MSG foo 4p
+REM AT 5:00PM MSG foo 5p
+REM AT 6:00pm MSG foo 6p
+REM AT 7:00PM MSG foo 7p
+REM AT 8:00pm MSG foo 8p
+REM AT 9:00PM MSG foo 9p
+REM AT 10:00pm MSG foo 10p
+REM AT 11:00PM MSG foo 11p
+REM AT 12:00pm MSG foo 12p
+REM AT 13:00PM MSG foo 13p
+
+DEBUG +x
+SET x 0:00am + 0
+SET x 1:00AM + 0
+SET x 2:00am + 0
+SET x 3:00AM + 0
+SET x 4:00am + 0
+SET x 5:00AM + 0
+SET x 6:00am + 0
+SET x 7:00AM + 0
+SET x 8:00am + 0
+SET x 9:00AM + 0
+SET x 10:00am + 0
+SET x 11:00AM + 0
+SET x 12:00am + 0
+SET x 13:00AM + 0
+
+SET x 0:00pm + 0
+SET x 1:00PM + 0
+SET x 2:00pm + 0
+SET x 3:00PM + 0
+SET x 4:00pm + 0
+SET x 5:00PM + 0
+SET x 6:00pm + 0
+SET x 7:00PM + 0
+SET x 8:00pm + 0
+SET x 9:00PM + 0
+SET x 10:00pm + 0
+SET x 11:00PM + 0
+SET x 12:00pm + 0
+SET x 13:00PM + 0
+
+SET x '2015-02-03@0:00am' + 0
+SET x '2015-02-03@1:00AM' + 0
+SET x '2015-02-03@2:00am' + 0
+SET x '2015-02-03@3:00AM' + 0
+SET x '2015-02-03@4:00am' + 0
+SET x '2015-02-03@5:00AM' + 0
+SET x '2015-02-03@6:00am' + 0
+SET x '2015-02-03@7:00AM' + 0
+SET x '2015-02-03@8:00am' + 0
+SET x '2015-02-03@9:00AM' + 0
+SET x '2015-02-03@10:00am' + 0
+SET x '2015-02-03@11:00AM' + 0
+SET x '2015-02-03@12:00am' + 0
+SET x '2015-02-03@13:00AM' + 0
+
+SET x '2015-02-03@0:00pm' + 0
+SET x '2015-02-03@1:00PM' + 0
+SET x '2015-02-03@2:00pm' + 0
+SET x '2015-02-03@3:00PM' + 0
+SET x '2015-02-03@4:00pm' + 0
+SET x '2015-02-03@5:00PM' + 0
+SET x '2015-02-03@6:00pm' + 0
+SET x '2015-02-03@7:00PM' + 0
+SET x '2015-02-03@8:00pm' + 0
+SET x '2015-02-03@9:00PM' + 0
+SET x '2015-02-03@10:00pm' + 0
+SET x '2015-02-03@11:00PM' + 0
+SET x '2015-02-03@12:00pm' + 0
+SET x '2015-02-03@13:00PM' + 0
+
+# Test the ampm function
+set x ampm(0:12) + ""
+set x ampm(1:12) + ""
+set x ampm(2:12) + ""
+set x ampm(3:12) + ""
+set x ampm(4:12) + ""
+set x ampm(5:12) + ""
+set x ampm(6:12) + ""
+set x ampm(7:12) + ""
+set x ampm(8:12) + ""
+set x ampm(9:12) + ""
+set x ampm(10:12) + ""
+set x ampm(11:12) + ""
+set x ampm(12:12) + ""
+set x ampm(13:12) + ""
+set x ampm(14:12) + ""
+set x ampm(15:12) + ""
+set x ampm(16:12) + ""
+set x ampm(17:12) + ""
+set x ampm(18:12) + ""
+set x ampm(19:12) + ""
+set x ampm(20:12) + ""
+set x ampm(21:12) + ""
+set x ampm(22:12) + ""
+set x ampm(23:12) + ""
+
+# Coerce with am/pm
+set x coerce("TIME", "12:45am")
+set x coerce("TIME", "12:45")
+set x coerce("TIME", "1:45pm")
+set x coerce("DATETIME", "2020-05-05@12:45am")
+set x coerce("DATETIME", "2020-05-05@12:45")
+set x coerce("DATETIME", "2020-05-05@1:45pm")
+
+# Overflow - these tests only work on machines with 32-bit
+# twos-complement signed integers.  You may get test failures on
+# machines with different architectures.
+set a $IntMin - 1
+set a $IntMin - $IntMax
+set a $IntMax - $IntMin
+set a $IntMax - (-1)
+set a $IntMax + 1
+set a $IntMax + $IntMax
+set a $IntMin + (-1)
+set a $IntMin + $IntMin
+set a $IntMax * 2
+set a $IntMax * $IntMax
+set a $IntMax * $IntMin
+set a $IntMin * 2
+set a $IntMin * $IntMin
+set a $IntMin * $IntMax
+set a $IntMin / (-1)
+set a abs($IntMin)
+
+# Don't want Remind to queue reminders
+EXIT
+
 __EOF__
 REM This line should not even be seen
 And you can put whatever you like here.
 [+f=asdfasdasde3ir0a]
+

tests/utf-8.rem

@@ -0,0 +1,4 @@
+MSG ру́сский ру́сский ру́сский ру́сский ру́сский ру́сский ру́сский ру́сский
+MSG עִבְרִית עִבְרִית עִבְרִית עִבְרִית עִבְרִית עִבְרִית עִבְרִית עִבְרִית עִבְרִית
+
+Wed MSG		With	tabs		and   spaces

www/Makefile.in

@@ -69,6 +69,7 @@ install:
 	sed $(SEDSCRIPT)  < moon.rem-DIST      > $(DESTDIR)$(SCRIPTDIR)/moon.rem
 	sed $(SEDSCRIPT)  < sunrise.rem-DIST   > $(DESTDIR)$(SCRIPTDIR)/sunrise.rem
 	sed $(SEDSCRIPT)  < sunset.rem-DIST    > $(DESTDIR)$(SCRIPTDIR)/sunset.rem
+	cp blank.rem $(DESTDIR)$(SCRIPTDIR)/blank.rem
 	sed $(SEDSCRIPT)  < calendar.html-DIST > $(DESTDIR)$(HTMLDIR)/calendar.html
 	sed $(SEDSCRIPT)  < hebhtml  > $(DESTDIR)$(SCRIPTDIR)/hebhtml
 	sed $(SEDSCRIPT2) < rem2html > $(DESTDIR)$(SCRIPTDIR)/rem2html$(CGISUFFIX)
@@ -76,6 +77,7 @@ install:
 	chmod 644 $(DESTDIR)$(SCRIPTDIR)/moon.rem
 	chmod 644 $(DESTDIR)$(SCRIPTDIR)/hebdate.rem
 	chmod 644 $(DESTDIR)$(SCRIPTDIR)/sunset.rem
+	chmod 644 $(DESTDIR)$(SCRIPTDIR)/blank.rem
 	chmod 644 $(DESTDIR)$(HTMLDIR)/calendar.html
 	chmod 755 $(DESTDIR)$(SCRIPTDIR)/cal_dispatch$(CGISUFFIX)
 	chmod 755 $(DESTDIR)$(SCRIPTDIR)/rem2html$(CGISUFFIX)

www/README

@@ -9,7 +9,7 @@ only tested it with Linux running NCSA's httpd and Apache's httpd, but
 it should work on any UNIX web server.
 
 To install it, you need the Remind package, available via ftp from
-ftp://ftp.doe.carleton.ca/pub/remind-3.0.  You should install Remind,
+https://dianne.skoll.ca/projects/remind/  You should install Remind,
 setting the lattitude, longitude, location and time zone as appropriate
 for your machine.
 
@@ -38,12 +38,8 @@ where "what" is one of:
 	hebps   -- get a PostScript calendar with Jewish holidays.
 	hebhtml -- get an HTML version of the above (requires Perl.)
 
-   (Visit http://www.doe.carleton.ca/~dfs/ for previews.)
-
    All of these links will be set up in a sample HTML document
    called "calendar.html" and installed in the HTMLDIR you specified
    in the Makefile.
 
 4) Enjoy!
-
-	

www/blank.rem

@@ -0,0 +1,5 @@
+[moondate(0)] SPECIAL MOON 0
+[moondate(1)] SPECIAL MOON 1
+[moondate(2)] SPECIAL MOON 2
+[moondate(3)] SPECIAL MOON 3
+REM Monday SPECIAL WEEK (W[weekno()])

www/calps

@@ -7,5 +7,5 @@
 echo "Content-type: application/postscript"
 echo
 
-$REMIND -p /dev/null | $REM2PS -e -c3 -l
+$REMIND -p $DIR/blank.rem | $REM2PS -e -c3 -l
 exit 0

www/hebdate.rem-DIST

@@ -29,6 +29,8 @@ ENDIF
 #									 #
 ##########################################################################
 
+SET n $NumTrig
+
 # --- HERE ARE THE JEWISH HOLIDAYS ---
 # Set the variable InIsrael to 1 if you live in Israel.  Otherwise,
 # you get the Diaspora versions of Jewish holidays
@@ -138,6 +140,10 @@ ENDIF
 
 fset msgprefix(x) ""
 
+IF $NumTrig > n
+   REM SPECIAL SHADE 224 224 255
+ENDIF
+
 # Counting the omer - do the whole spiel, i.e:
 # "This is the xth day of the omer, being y weeks and z days of the omer."
 # Nice Remind programming example here!
@@ -165,7 +171,7 @@ ELSE
 	[trigger(moondate(2))] SPECIAL MOON 2
 	[trigger(moondate(3))] SPECIAL MOON 3
 	REM PS Border Border moveto /DayFont findfont 10 scalefont setfont ([hebday(today())] [hebmon(today())]) show
-	REM SPECIAL HTML <P><FONT SIZE=-1>[hebday(today())] [hebmon(today())]</FONT></P>
+	REM SPECIAL HTML <P>[hebday(today())] [hebmon(today())]</P>
 
 ENDIF
 

www/rem2html

@@ -4,10 +4,11 @@ use strict;
 use warnings;
 
 use Getopt::Long;
+use JSON::Any;
 
 my %Options;
 
-my $rem2html_version = '2.0';
+my $rem2html_version = '2.1';
 
 my($days, $shades, $moons, $classes, $Month, $Year, $Numdays, $Firstwkday, $Mondayfirst, $weeks,
     @Daynames, $Nextmon, $Nextlen, $Prevmon, $Prevlen);
@@ -191,7 +192,7 @@ sub parse_input
     my $found_data = 0;
     while(<STDIN>) {
 	chomp;
-	last if /^\# rem2ps begin$/;
+	last if /^\# rem2ps2? begin$/;
     }
 
     my $line;
@@ -228,13 +229,29 @@ sub parse_input
     }
     while(<STDIN>) {
 	chomp;
-	last if /^\# rem2ps end$/;
+	last if /^\# rem2ps2? end$/;
 	next if /^\#/;
-	next unless m/^(\d*).(\d*).(\d*)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s*(.*)$/;
-	my ($y, $m, $d, $special, $tag, $duration, $time, $body) =
-	    ($1, $2, $3, $4, $5, $6, $7, $8);
+	my ($y, $m, $d, $special, $tag, $duration, $time, $body);
+	if (m/^(\d*).(\d*).(\d*)\s+(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s*(.*)$/) {
+		($y, $m, $d, $special, $tag, $duration, $time, $body) =
+		    ($1, $2, $3, $4, $5, $6, $7, $8);
+	} elsif (/\{/) {
+		my $obj = JSON::Any->jsonToObj($_);
+		next unless ($obj->{date} =~ /^(\d+)-(\d+)-(\d+)$/);
+		$y = $1;
+		$m = $2;
+		$d = $3;
+		$special = $obj->{passthru} || '*';
+		$tag = $obj->{tags} || '*';
+		$duration = $obj->{duration} || '*';
+		$time = $obj->{time} || '*';
+		$body = $obj->{body};
+	} else {
+		next;
+	}
 	my $d1 = $d;
 	$d1 =~ s/^0+//;
+	$special = uc($special);
 	if ($special eq 'HTML') {
 	    push(@{$days->[$d]}, $body);
 	} elsif ($special eq 'HTMLCLASS') {