builtin-tag: accept and process multiple -m just like git-commit

Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/Documentation/git-tag.txt b/Documentation/git-tag.txt
index 10d3e3fa950e00b6004f968ff2c41477e1d57612..784ec6d4c29879e48c13834819048d4a640dc32d 100644 (file)
--- a/Documentation/git-tag.txt
+++ b/Documentation/git-tag.txt
@@ -65,7 +65,9 @@ OPTIONS
        Typing "git tag" without arguments, also lists all tags.
 
 -m <msg>::
-       Use the given tag message (instead of prompting)
+       Use the given tag message (instead of prompting).
+       If multiple `-m` options are given, there values are
+       concatenated as separate paragraphs.
 
 -F <file>::
        Take the tag message from the given file.  Use '-' to

diff --git a/builtin-tag.c b/builtin-tag.c
index c272ad0f1d98bdbbd8dfdc813e031321ee9cac12..3a6467d8ed62e7fd9ae98d08a24994171fa7787a 100644 (file)
--- a/builtin-tag.c
+++ b/builtin-tag.c
@@ -282,7 +282,7 @@ static void write_tag_body(int fd, const unsigned char *sha1)
 
 static void create_tag(const unsigned char *object, const char *tag,
                       struct strbuf *buf, int message, int sign,
-                          unsigned char *prev, unsigned char *result)
+                      unsigned char *prev, unsigned char *result)
 {
        enum object_type type;
        char header_buf[1024];
@@ -341,6 +341,24 @@ static void create_tag(const unsigned char *object, const char *tag,
                die("unable to write tag file");
 }
 
+struct msg_arg {
+       int given;
+       struct strbuf buf;
+};
+
+static int parse_msg_arg(const struct option *opt, const char *arg, int unset)
+{
+       struct msg_arg *msg = opt->value;
+
+       if (!arg)
+               return -1;
+       if (msg->buf.len)
+               strbuf_addstr(&(msg->buf), "\n\n");
+       strbuf_addstr(&(msg->buf), arg);
+       msg->given = 1;
+       return 0;
+}
+
 int cmd_tag(int argc, const char **argv, const char *prefix)
 {
        struct strbuf buf;
@@ -351,8 +369,9 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
 
        int annotate = 0, sign = 0, force = 0, lines = 0,
                                        delete = 0, verify = 0;
-       char *list = NULL, *msg = NULL, *msgfile = NULL, *keyid = NULL;
+       char *list = NULL, *msgfile = NULL, *keyid = NULL;
        const char *no_pattern = "NO_PATTERN";
+       struct msg_arg msg = { 0, STRBUF_INIT };
        struct option options[] = {
                { OPTION_STRING, 'l', NULL, &list, "pattern", "list tag names",
                        PARSE_OPT_OPTARG, NULL, (intptr_t) no_pattern },
@@ -365,7 +384,8 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
                OPT_GROUP("Tag creation options"),
                OPT_BOOLEAN('a', NULL, &annotate,
                                        "annotated tag, needs a message"),
-               OPT_STRING('m', NULL, &msg, "msg", "message for the tag"),
+               OPT_CALLBACK('m', NULL, &msg, "msg",
+                            "message for the tag", parse_msg_arg),
                OPT_STRING('F', NULL, &msgfile, "file", "message in a file"),
                OPT_BOOLEAN('s', NULL, &sign, "annotated and GPG-signed tag"),
                OPT_STRING('u', NULL, &keyid, "key-id",
@@ -386,12 +406,12 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
                return for_each_tag_name(argv, verify_tag);
 
        strbuf_init(&buf, 0);
-       if (msg || msgfile) {
-               if (msg && msgfile)
+       if (msg.given || msgfile) {
+               if (msg.given && msgfile)
                        die("only one -F or -m option is allowed.");
                annotate = 1;
-               if (msg)
-                       strbuf_addstr(&buf, msg);
+               if (msg.given)
+                       strbuf_addbuf(&buf, &(msg.buf));
                else {
                        if (!strcmp(msgfile, "-")) {
                                if (strbuf_read(&buf, 0, 1024) < 0)
@@ -429,7 +449,8 @@ int cmd_tag(int argc, const char **argv, const char *prefix)
                die("tag '%s' already exists", tag);
 
        if (annotate)
-               create_tag(object, tag, &buf, msg || msgfile, sign, prev, object);
+               create_tag(object, tag, &buf, msg.given || msgfile,
+                          sign, prev, object);
 
        lock = lock_any_ref_for_update(ref, prev, 0);
        if (!lock)