Add $ParseUntriggered system variable.

man/remind.1.in

@@ -2585,6 +2585,28 @@ by \fBREM\fR commands; triggers in \fBIFTRIG\fR commands do
 not affect it.
 .RE
 .TP
+.B $ParseUntriggered
+A flag indicating whether or not \fBRemind\fR should fully parse \fBREM\fR
+statements that are not triggered.  0 means to skip parsing them and 1
+(the default) means to parse them.
+.PP
+.RS
+For example, if we have the following \fBREM\fR statement:
+.PP
+.nf
+            REM 2020-01-01 MSG ["bad_expression" * 2]
+.fi
+.PP
+Then by default, \fBRemind\fR will fully parse the line and issue
+a "Type mismatch" error even if the reminder is not triggered.  However,
+if \fB$ParseUntriggered\fR is set to 0, then \fBRemind\fR will not
+issue the error except on 2020-01-01, when the reminder is triggered.
+.PP
+Setting \fB$ParseUntriggered\fR to 0 may in some cases slightly
+improve performance, at the risk of not catching errors until a
+reminder is triggered.
+.RE
+.TP
 .B $PrefixLineNo (read-only)
 If non-zero, then the \fB\-l\fR option was supplied on the command line.
 .TP

src/dorem.c

@@ -199,9 +199,11 @@ int DoRem(ParsePtr p)
     } else {
         /* Parse the rest of the line to catch any potential
            expression-pasting errors */
-        while (ParseChar(p, &r, 0)) {
-            if (r != 0) {
-                break;
+        if (ParseUntriggered) {
+            while (ParseChar(p, &r, 0)) {
+                if (r != 0) {
+                    break;
+                }
             }
         }
     }

src/globals.h

@@ -79,6 +79,7 @@ EXTERN	INIT(	int	SortByPrio, 0);
 EXTERN  INIT(   int     UntimedBeforeTimed, 0);
 EXTERN	INIT(	int	DefaultPrio, NO_PRIORITY);
 EXTERN  INIT(   long    SysTime, -1L);
+EXTERN  INIT(   int     ParseUntriggered, 1);
 
 EXTERN	char	const *InitialFile;
 EXTERN	int	FileAccessDate;

src/var.c

@@ -839,6 +839,7 @@ static SysVar SysVarArr[] = {
     {"NumTrig",        0,  INT_TYPE,     &NumTriggered,        0,      0 },
     {"October",        1,  STR_TYPE,     &DynamicMonthName[9], 0,      0 },
     {"On",             1,  STR_TYPE,     &DynamicOn,           0,      0 },
+    {"ParseUntriggered", 1, INT_TYPE,    &ParseUntriggered,    0,      1 },
     {"Pm",             1,  STR_TYPE,     &DynamicPm,           0,      0 },
     {"PrefixLineNo",   0,  INT_TYPE,     &DoPrefixLineNo,      0,      0 },
     {"PSCal",          0,  INT_TYPE,     &PsCal,               0,      0 },

tests/test.cmp

@@ -2803,6 +2803,7 @@ Variable  Value
         $NumTrig  41
         $October  "October"
              $On  "on"
+$ParseUntriggered  1           [0, 1]
              $Pm  "pm"
    $PrefixLineNo  0
           $PSCal  0
@@ -4821,6 +4822,16 @@ htmlstriptags("this is > whut <b>foo</b>") => "this is > whut foo"
 set a htmlstriptags("<img src=\"foo\">")
 htmlstriptags("<img src=\"foo\">") => ""
 
+# $ParseUntriggered
+REM 2 Jan 1990 MSG ["bad_expr" * 2]
+../tests/test.rem(885): Expired
+"bad_expr" * 2 => Type mismatch
+../tests/test.rem(885): `*': Type mismatch
+SET $ParseUntriggered 0
+REM 2 Jan 1990 MSG ["bad_expr" * 2]
+../tests/test.rem(887): Expired
+SET $ParseUntriggered 1
+
 # Don't want Remind to queue reminders
 EXIT
 

tests/test.rem

@@ -881,6 +881,12 @@ set a htmlstriptags("This is <unclosed whut?")
 set a htmlstriptags("this is > whut <b>foo</b>")
 set a htmlstriptags("<img src=\"foo\">")
 
+# $ParseUntriggered
+REM 2 Jan 1990 MSG ["bad_expr" * 2]
+SET $ParseUntriggered 0
+REM 2 Jan 1990 MSG ["bad_expr" * 2]
+SET $ParseUntriggered 1
+
 # Don't want Remind to queue reminders
 EXIT