worktree: add 'list' command

diff --git a/builtin/am.c b/builtin/am.c
index 83b3d86e67f1ef335d0d3011ef0205909b315692..4f77e07b9549f8ff144d770fb0b66e9124ae4dc6 100644 (file)
--- a/builtin/am.c
+++ b/builtin/am.c
@@ -1207,6 +1207,33 @@ static void NORETURN die_user_resolve(const struct am_state *state)
        exit(128);
 }
 
+static void am_signoff(struct strbuf *sb)
+{
+       char *cp;
+       struct strbuf mine = STRBUF_INIT;
+
+       /* Does it end with our own sign-off? */
+       strbuf_addf(&mine, "\n%s%s\n",
+                   sign_off_header,
+                   fmt_name(getenv("GIT_COMMITTER_NAME"),
+                            getenv("GIT_COMMITTER_EMAIL")));
+       if (mine.len < sb->len &&
+           !strcmp(mine.buf, sb->buf + sb->len - mine.len))
+               goto exit; /* no need to duplicate */
+
+       /* Does it have any Signed-off-by: in the text */
+       for (cp = sb->buf;
+            cp && *cp && (cp = strstr(cp, sign_off_header)) != NULL;
+            cp = strchr(cp, '\n')) {
+               if (sb->buf == cp || cp[-1] == '\n')
+                       break;
+       }
+
+       strbuf_addstr(sb, mine.buf + !!cp);
+exit:
+       strbuf_release(&mine);
+}
+
 /**
  * Appends signoff to the "msg" field of the am_state.
  */
@@ -1215,7 +1242,7 @@ static void am_append_signoff(struct am_state *state)
        struct strbuf sb = STRBUF_INIT;
 
        strbuf_attach(&sb, state->msg, state->msg_len, state->msg_len);
-       append_signoff(&sb, 0, 0);
+       am_signoff(&sb);
        state->msg = strbuf_detach(&sb, &state->msg_len);
 }
 
@@ -1319,7 +1346,7 @@ static int parse_mail(struct am_state *state, const char *mail)
        stripspace(&msg, 0);
 
        if (state->signoff)
-               append_signoff(&msg, 0, 0);
+               am_signoff(&msg);
 
        assert(!state->author_name);
        state->author_name = strbuf_detach(&author_name, NULL);