reset: improve worktree safety valves

diff --git a/parse-options.c b/parse-options.c
index 34282adde5a2fd8ebb1413aee6742633b9656db7..f5594114ede8a50090c8b97987b52a660235fa56 100644 (file)
--- a/parse-options.c
+++ b/parse-options.c
@@ -230,6 +230,9 @@ static int parse_long_opt(struct parse_opt_ctx_t *p, const char *arg,
                                abbrev_flags = flags;
                                continue;
                        }
+                       /* negation allowed? */
+                       if (options->flags & PARSE_OPT_NONEG)
+                               continue;
                        /* negated and abbreviated very much? */
                        if (!prefixcmp("no-", arg)) {
                                flags |= OPT_UNSET;
@@ -478,7 +481,7 @@ static int usage_argh(const struct option *opts)
 #define USAGE_OPTS_WIDTH 24
 #define USAGE_GAP         2
 
-int usage_with_options_internal(const char * const *usagestr,
+static int usage_with_options_internal(const char * const *usagestr,
                                const struct option *opts, int full)
 {
        if (!usagestr)
@@ -511,7 +514,7 @@ int usage_with_options_internal(const char * const *usagestr,
                        continue;
 
                pos = fprintf(stderr, "    ");
-               if (opts->short_name) {
+               if (opts->short_name && !(opts->flags & PARSE_OPT_NEGHELP)) {
                        if (opts->flags & PARSE_OPT_NODASH)
                                pos += fprintf(stderr, "%c", opts->short_name);
                        else
@@ -520,7 +523,9 @@ int usage_with_options_internal(const char * const *usagestr,
                if (opts->long_name && opts->short_name)
                        pos += fprintf(stderr, ", ");
                if (opts->long_name)
-                       pos += fprintf(stderr, "--%s", opts->long_name);
+                       pos += fprintf(stderr, "--%s%s",
+                               (opts->flags & PARSE_OPT_NEGHELP) ?  "no-" : "",
+                               opts->long_name);
                if (opts->type == OPTION_NUMBER)
                        pos += fprintf(stderr, "-NUM");
 
@@ -547,6 +552,14 @@ void usage_with_options(const char * const *usagestr,
        exit(129);
 }
 
+void usage_msg_opt(const char *msg,
+                  const char * const *usagestr,
+                  const struct option *options)
+{
+       fprintf(stderr, "%s\n\n", msg);
+       usage_with_options(usagestr, options);
+}
+
 int parse_options_usage(const char * const *usagestr,
                        const struct option *opts)
 {