Hi,
This one is crucial, aborting loops in csh is done upon receiving
SIGINT. The signal handler will eventually call longjmp() and re-enter
the input loop if all went well. The tty should therefore be restored
prior sending the SIGINT.
Strange behavior discovered by the regress suite.
Comments? OK?
Index: file.c
===================================================================
RCS file: /cvs/src/bin/csh/file.c,v
retrieving revision 1.30
diff -u -p -r1.30 file.c
--- file.c 29 Jun 2017 04:23:12 -0000 1.30
+++ file.c 7 Jul 2017 07:49:15 -0000
@@ -228,8 +228,11 @@ cl_abort(struct cmdline *cl, int c)
cl_visc(cl, c);
/* Abort while/foreach loop prematurely. */
- if (whyles)
+ if (whyles) {
+ setup_tty(0);
kill(getpid(), SIGINT);
+ /* NOTREACHED */
+ }
cl_putc(cl, '\n');
cl->len = cl->cursor = 0;
