ash: match bash behavior for ${empty_var/*/repl}
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/shell/ash.c b/shell/ash.c
index 76bf39e..1aead6d 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -7178,7 +7178,7 @@
len = 0;
idx = startp;
end = str - 1;
- while (idx < end) {
+ while (idx <= end) {
try_to_match:
loc = scanright(idx, rmesc, rmescend, str, quotes, 1);
//bb_error_msg("scanright('%s'):'%s'", str, loc);
@@ -7186,6 +7186,8 @@
/* No match, advance */
char *restart_detect = stackblock();
skip_matching:
+ if (idx >= end)
+ break;
STPUTC(*idx, expdest);
if (quotes && (unsigned char)*idx == CTLESC) {
idx++;
@@ -7198,8 +7200,6 @@
len++;
rmesc++;
/* continue; - prone to quadratic behavior, smarter code: */
- if (idx >= end)
- break;
if (str[0] == '*') {
/* Pattern is "*foo". If "*foo" does not match "long_string",
* it would never match "ong_string" etc, no point in trying.