assert NOARG/NONEG behavior of parse-options callbacks

diff --git a/builtin/fetch.c b/builtin/fetch.c
index 8f7249f2b138279dabfe994248f58069e8d52a7b..354ed8bdef3a6511ddb580d97b75df60b77ac6ca 100644 (file)
--- a/builtin/fetch.c
+++ b/builtin/fetch.c
@@ -98,6 +98,8 @@ static int git_fetch_config(const char *k, const char *v, void *cb)
 
 static int parse_refmap_arg(const struct option *opt, const char *arg, int unset)
 {
+       BUG_ON_OPT_NEG(unset);
+
        /*
         * "git fetch --refmap='' origin foo"
         * can be used to tell the command not to store anywhere