1 files changed, 27 insertions, 4 deletions

diff --git a/parse-options.c b/parse-options.c
index f7ce523a61..d218122af5 100644
--- a/parse-options.c
+++ b/parse-options.c
@@ -3,6 +3,9 @@
 #include "cache.h"
 #include "commit.h"
 
+static int parse_options_usage(const char * const *usagestr,
+			       const struct option *opts);
+
 #define OPT_SHORT 1
 #define OPT_UNSET 2
 
@@ -230,6 +233,9 @@ is_abbreviated:
 				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;
@@ -511,7 +517,7 @@ static 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 +526,9 @@ static 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");
 
@@ -547,8 +555,16 @@ void usage_with_options(const char * const *usagestr,
 	exit(129);
 }
 
-int parse_options_usage(const char * const *usagestr,
-			const struct option *opts)
+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);
+}
+
+static int parse_options_usage(const char * const *usagestr,
+			       const struct option *opts)
 {
 	return usage_with_options_internal(usagestr, opts, 0);
 }
@@ -620,3 +636,10 @@ int parse_opt_with_commit(const struct option *opt, const char *arg, int unset)
 	commit_list_insert(commit, opt->value);
 	return 0;
 }
+
+int parse_opt_tertiary(const struct option *opt, const char *arg, int unset)
+{
+	int *target = opt->value;
+	*target = unset ? 2 : 1;
+	return 0;
+}