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libbb: make index_in_substrings return -1 on ambiguous matches

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function                                             old     new   delta
index_in_substrings                                   67      93     +26

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2010-04-03 00:52:16 +02:00
parent 05d1a32192
commit 8a659f6ff9
3 changed files with 24 additions and 7 deletions
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4
networking/brctl.c
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@@ -220,10 +220,10 @@ int brctl_main(int argc UNUSED_PARAM, char **argv)
}
#if ENABLE_FEATURE_BRCTL_FANCY
if (key == ARG_stp) { /* stp */
static const char stp_opts[] ALIGN1 =
static const char no_yes[] ALIGN1 =
"0\0" "off\0" "n\0" "no\0" /* 0 .. 3 */
"1\0" "on\0" "y\0" "yes\0"; /* 4 .. 7 */
int onoff = index_in_strings(stp_opts, *argv);
int onoff = index_in_strings(no_yes, *argv);
if (onoff < 0)
bb_error_msg_and_die(bb_msg_invalid_arg, *argv, applet_name);
onoff = (unsigned)onoff / 4;