Make '-t' take a numeric argument that sets the "DeltaOffset" to that

value.  We trigger any reminder that will trigger between today and
today+DeltaOffset days.  A bare '-t' sets InfiniteDelta as before.

src/dorem.c

@@ -781,6 +781,11 @@ int ShouldTriggerReminder(Trigger *t, TimeTrig *tim, int jul)
 
     /* If there's a "warn" function, it overrides any deltas */
     if (t->warn[0] != 0) {
+	if (DeltaOffset) {
+	    if (jul <= JulianToday + DeltaOffset) {
+		return 1;
+	    }
+	}
 	return ShouldTriggerBasedOnWarn(t, jul);
     }
 
@@ -798,7 +803,7 @@ int ShouldTriggerReminder(Trigger *t, TimeTrig *tim, int jul)
     }
 
     /* Should we trigger the reminder? */
-    return (jul <= JulianToday);
+    return (jul <= JulianToday + DeltaOffset);
 }
 
 /***************************************************************/

src/globals.h

@@ -53,6 +53,7 @@ EXTERN  INIT(   int     CalMonths, 0);
 EXTERN  INIT(	int 	Hush, 0);
 EXTERN  INIT(	int 	NextMode, 0);
 EXTERN  INIT(	int 	InfiniteDelta, 0);
+EXTERN  INIT(   int     DeltaOffset, 0);
 EXTERN  INIT(   int     RunDisabled, 0);
 EXTERN  INIT(   int     IgnoreOnce, 0);
 EXTERN  INIT(   int     SortByTime, 0);

src/init.c

@@ -222,9 +222,15 @@ void InitRemind(int argc, char const *argv[])
 
 	    case 't':
 	    case 'T':
-		InfiniteDelta = 1;
+		if (!*arg) {
+		    InfiniteDelta = 1;
+		} else {
+		    PARSENUM(DeltaOffset, arg);
+		    if (DeltaOffset < 0) {
+			DeltaOffset = 0;
+		    }
+		}
 		break;
-
 	    case 'e':
 	    case 'E':
 		ErrFp = stdout;