33876: etc.: Separate errors and keyboards interrupts

Combination of 12 commits from interrupt_abort branch.

Basic strategy is to introduce bits to errflag and to set and
reset them separately.

Remove interrupt status on return to main keymap.

Turn off ERRFLAG_INT for always block.

Restore bit thereafter: we probably need a new variable in order
to allow user interrupts to be reset in the always block.

Add TRY_BLOCK_INTERRUPT

This works the same as TRY_BLOCK_ERROR, but for a SIGINT, too.

Ensure propagation of SIGINT from exited job.

If received by foreground job, shell uses ERRFLAG_INT, not
ERRFLAG_ERROR, to set the new state.

Reset errflag before precmd()

Add always block in _main_completion to fix ZLS_COLORS

Ensures we get the right state of $ZLS_COLORS at the end of _main_complete
even if there's an interrupt.  However, the "right state" is a bit messy
as it depends on styles.

1 files changed, 4 insertions, 4 deletions

diff --git a/Src/utils.c b/Src/utils.c
index ab3d3da93..893a8ca02 100644
--- a/Src/utils.c
+++ b/Src/utils.c
@@ -153,7 +153,7 @@ VA_DCL
 
     if (errflag || noerrs) {
 	if (noerrs < 2)
-	    errflag = 1;
+	    errflag |= ERRFLAG_ERROR;
 	return;
     }
 
@@ -161,7 +161,7 @@ VA_DCL
     VA_GET_ARG(ap, fmt, const char *);
     zwarning(NULL, fmt, ap);
     va_end(ap);
-    errflag = 1;
+    errflag |= ERRFLAG_ERROR;
 }
 
 /**/
@@ -181,7 +181,7 @@ VA_DCL
     VA_GET_ARG(ap, fmt, const char *);
     zwarning(cmd, fmt, ap);
     va_end(ap);
-    errflag = 1;
+    errflag |= ERRFLAG_ERROR;
 }
 
 /**/
@@ -330,7 +330,7 @@ zerrmsg(FILE *file, const char *fmt, va_list ap)
 		num = va_arg(ap, int);
 		if (num == EINTR) {
 		    fputs("interrupt\n", file);
-		    errflag = 1;
+		    errflag |= ERRFLAG_ERROR;
 		    return;
 		}
 		errmsg = strerror(num);