serialize collection of refs that contain submodule changes

diff --git a/builtin/log.c b/builtin/log.c
index b8cdf2b9d9cbd30950810eaa5dd5091dc23eb3c6..55d20cc2d88ab03d96f0476b222be3b2f6832ed9 100644 (file)
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1111,6 +1111,11 @@ static int subject_prefix_callback(const struct option *opt, const char *arg,
        return 0;
 }
 
+static int rfc_callback(const struct option *opt, const char *arg, int unset)
+{
+       return subject_prefix_callback(opt, "RFC PATCH", unset);
+}
+
 static int numbered_cmdline_opt = 0;
 
 static int numbered_callback(const struct option *opt, const char *arg,
@@ -1418,6 +1423,9 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
                            N_("start numbering patches at <n> instead of 1")),
                OPT_INTEGER('v', "reroll-count", &reroll_count,
                            N_("mark the series as Nth re-roll")),
+               { OPTION_CALLBACK, 0, "rfc", &rev, NULL,
+                           N_("Use [RFC PATCH] instead of [PATCH]"),
+                           PARSE_OPT_NOARG | PARSE_OPT_NONEG, rfc_callback },
                { OPTION_CALLBACK, 0, "subject-prefix", &rev, N_("prefix"),
                            N_("Use [<prefix>] instead of [PATCH]"),
                            PARSE_OPT_NONEG, subject_prefix_callback },
@@ -1556,7 +1564,7 @@ int cmd_format_patch(int argc, const char **argv, const char *prefix)
        if (numbered && keep_subject)
                die (_("-n and -k are mutually exclusive."));
        if (keep_subject && subject_prefix)
-               die (_("--subject-prefix and -k are mutually exclusive."));
+               die (_("--subject-prefix/--rfc and -k are mutually exclusive."));
        rev.preserve_subject = keep_subject;
 
        argc = setup_revisions(argc, argv, &rev, &s_r_opt);