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fix getopt_long arguments to partial matches

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If we find a partial option name match, we need to keep looking for
ambiguous/conflicting options. However, we need to remember the position
in the candidate argument to find its option-argument later, if there is
one. This fixes e.g. option "foobar" being given as "--fooba=baz".
This commit is contained in:
Samuel Holland 2018-01-29 20:36:41 -06:00 committed by Rich Felker
parent 14edadb542
commit f1abc29bd0
1 changed files with 3 additions and 1 deletions
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4
src/misc/getopt_long.c
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@ -58,13 +58,14 @@ static int __getopt_long_core(int argc, char *const *argv, const char *optstring
{
int colon = optstring[optstring[0]=='+'||optstring[0]=='-']==':';
int i, cnt, match;
char *opt;
char *arg, *opt;
for (cnt=i=0; longopts[i].name; i++) {
const char *name = longopts[i].name;
opt = argv[optind]+1;
if (*opt == '-') opt++;
for (; *name && *name == *opt; name++, opt++);
if (*opt && *opt != '=') continue;
arg = opt;
match = i;
if (!*name) {
cnt = 1;
@ -74,6 +75,7 @@ static int __getopt_long_core(int argc, char *const *argv, const char *optstring
}
if (cnt==1) {
i = match;
opt = arg;
optind++;
if (*opt == '=') {
if (!longopts[i].has_arg) {