format-patch: add --reroll-count=$N option
The --reroll-count=$N option, when given a positive integer:
- Adds " v$N" to the subject prefix specified. As the default
subject prefix string is "PATCH", --reroll-count=2 makes it
"PATCH v2".
- Prefixes "v$N-" to the names used for output files. The cover
letter, whose name is usually 0000-cover-letter.patch, becomes
v2-0000-cover-letter.patch when given --reroll-count=2.
This allows users to use the same --output-directory for multiple
iterations of the same series, without letting the output for a
newer round overwrite output files from the earlier rounds. The
user can incorporate materials from earlier rounds to update the
newly minted iteration, and use "send-email v2-*.patch" to send out
the patches belonging to the second iteration easily.
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/builtin/log.c b/builtin/log.c
index 8cfb4da..e101498 100644
--- a/builtin/log.c
+++ b/builtin/log.c
@@ -1061,6 +1061,7 @@
struct strbuf buf = STRBUF_INIT;
int use_patch_format = 0;
int quiet = 0;
+ int reroll_count = -1;
char *branch_name = NULL;
const struct option builtin_format_patch_options[] = {
{ OPTION_CALLBACK, 'n', "numbered", &numbered, NULL,
@@ -1080,6 +1081,8 @@
N_("use <sfx> instead of '.patch'")),
OPT_INTEGER(0, "start-number", &start_number,
N_("start numbering patches at <n> instead of 1")),
+ OPT_INTEGER(0, "reroll-count", &reroll_count,
+ N_("mark the series as Nth re-roll")),
{ OPTION_CALLBACK, 0, "subject-prefix", &rev, N_("prefix"),
N_("Use [<prefix>] instead of [PATCH]"),
PARSE_OPT_NONEG, subject_prefix_callback },
@@ -1152,6 +1155,14 @@
PARSE_OPT_KEEP_ARGV0 | PARSE_OPT_KEEP_UNKNOWN |
PARSE_OPT_KEEP_DASHDASH);
+ if (0 < reroll_count) {
+ struct strbuf sprefix = STRBUF_INIT;
+ strbuf_addf(&sprefix, "%s v%d",
+ rev.subject_prefix, reroll_count);
+ rev.reroll_count = reroll_count;
+ rev.subject_prefix = strbuf_detach(&sprefix, NULL);
+ }
+
if (do_signoff) {
const char *committer;
const char *endpos;
diff --git a/log-tree.c b/log-tree.c
index 670beae..5dc126b 100644
--- a/log-tree.c
+++ b/log-tree.c
@@ -308,6 +308,8 @@
int start_len = filename->len;
int max_len = start_len + FORMAT_PATCH_NAME_MAX - (strlen(suffix) + 1);
+ if (0 < info->reroll_count)
+ strbuf_addf(filename, "v%d-", info->reroll_count);
strbuf_addf(filename, "%04d-%s", nr, subject);
if (max_len < filename->len)
diff --git a/revision.h b/revision.h
index a95bd0b..e4a912a 100644
--- a/revision.h
+++ b/revision.h
@@ -134,6 +134,7 @@
const char *mime_boundary;
const char *patch_suffix;
int numbered_files;
+ int reroll_count;
char *message_id;
struct string_list *ref_message_ids;
const char *add_signoff;
