parse-options: abbreviation engine fix.
When an option could be an ambiguous abbreviation of two options, the code
used to error out. Even if an exact match would have occured later.
Test and original patch by Pierre Habouzit.
Signed-off-by: Johannes Schindelin <Johannes.Schindelin@gmx.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/parse-options.c b/parse-options.c
index cc09c98..15b32f7 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -119,8 +119,8 @@
const struct option *options)
{
const char *arg_end = strchr(arg, '=');
- const struct option *abbrev_option = NULL;
- int abbrev_flags = 0;
+ const struct option *abbrev_option = NULL, *ambiguous_option = NULL;
+ int abbrev_flags = 0, ambiguous_flags = 0;
if (!arg_end)
arg_end = arg + strlen(arg);
@@ -137,16 +137,16 @@
/* abbreviated? */
if (!strncmp(options->long_name, arg, arg_end - arg)) {
is_abbreviated:
- if (abbrev_option)
- return error("Ambiguous option: %s "
- "(could be --%s%s or --%s%s)",
- arg,
- (flags & OPT_UNSET) ?
- "no-" : "",
- options->long_name,
- (abbrev_flags & OPT_UNSET) ?
- "no-" : "",
- abbrev_option->long_name);
+ if (abbrev_option) {
+ /*
+ * If this is abbreviated, it is
+ * ambiguous. So when there is no
+ * exact match later, we need to
+ * error out.
+ */
+ ambiguous_option = abbrev_option;
+ ambiguous_flags = abbrev_flags;
+ }
if (!(flags & OPT_UNSET) && *arg_end)
p->opt = arg_end + 1;
abbrev_option = options;
@@ -176,6 +176,15 @@
}
return get_value(p, options, flags);
}
+
+ if (ambiguous_option)
+ return error("Ambiguous option: %s "
+ "(could be --%s%s or --%s%s)",
+ arg,
+ (ambiguous_flags & OPT_UNSET) ? "no-" : "",
+ ambiguous_option->long_name,
+ (abbrev_flags & OPT_UNSET) ? "no-" : "",
+ abbrev_option->long_name);
if (abbrev_option)
return get_value(p, abbrev_option, abbrev_flags);
return error("unknown option `%s'", arg);
