sequencer: replace error() with BUG() in update_squash_messages ()

In sequencer.c, caller only pass TODO_SQUASH or TODO_FIXUP to
update_squash_messages(), any other command passed in should be
considered as BUG. Replace `return error('unknown command')`
with `BUG('not a FIXUP or SQUASH')`.

Signed-off-by: Lidong Yan <502024330056@smail.nju.edu.cn>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/sequencer.c b/sequencer.c
index 1ee0abbd4514f2509fe41a14fabc0c2044b096a2..9456ca6ee97db44f07c7be0c7d9d1870ae90ce25 100644 (file)
--- a/sequencer.c
+++ b/sequencer.c
@@ -2067,6 +2067,9 @@ static int update_squash_messages(struct repository *r,
        const char *message, *body;
        const char *encoding = get_commit_output_encoding();
 
+       if (!is_fixup(command))
+               BUG("not a FIXUP or SQUASH %d", command);
+
        if (ctx->current_fixup_count > 0) {
                struct strbuf header = STRBUF_INIT;
                char *eol;
@@ -2134,8 +2137,7 @@ static int update_squash_messages(struct repository *r,
                strbuf_addstr(&buf, "\n\n");
                strbuf_add_commented_lines(&buf, body, strlen(body),
                                           comment_line_str);
-       } else
-               return error(_("unknown command: %d"), command);
+       }
        repo_unuse_commit_buffer(r, commit, message);
 
        if (!res)