vis

commit 845a7f1c9c6ab1b72d21bcf87df6840390833e8a
parent c532f7e163f2af962f689d4f4f6574654d0e4357
Author: Marc André Tanner <mat@brain-dump.org>
Date:   Wed, 12 Apr 2017 17:39:51 +0200

sam: distinguish between empty // and no regex

Diffstat:
M
sam.c
 | 
5
++++-

1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/sam.c b/sam.c
@@ -550,7 +550,7 @@ static char *parse_until(const char **s, const char *until, const char *escchars
 
 static char *parse_delimited(const char **s, int type) {
 	char delim[2] = { **s, '\0' };
-	if (!delim[0])
+	if (!delim[0] || isspace((unsigned char)delim[0]))
 		return NULL;
 	(*s)++;
 	char *chunk = parse_until(s, delim, NULL, type);
@@ -624,7 +624,10 @@ static char *parse_cmdname(const char **s) {
 }
 
 static Regex *parse_regex(Vis *vis, const char **s) {
+	const char *before = *s;
 	char *pattern = parse_delimited(s, CMD_REGEX);
+	if (!pattern && *s == before)
+		return NULL;
 	Regex *regex = vis_regex(vis, pattern);
 	free(pattern);
 	return regex;