On Fri, Jan 08, 2021 at 02:53:41PM +0530, Charvi Mendiratta wrote:
> From: Phillip Wood <phillip.wood@xxxxxxxxxxxxx>
>
> When squashing commit messages the squash!/fixup! subjects are not of
> interest so comment them out to stop them becoming part of the final
> message.
>
> This change breaks a bunch of --autosquash tests which rely on the
> "squash! <subject>" line appearing in the final commit message. This is
> addressed by adding a second line to the commit message of the "squash!
> ..." commits and testing for that.
>
> Signed-off-by: Phillip Wood <phillip.wood@xxxxxxxxxxxxx>
> Signed-off-by: Charvi Mendiratta <charvi077@xxxxxxxxx>
> ---
> sequencer.c | 25 ++++++++++++++++++++++++-
> t/t3415-rebase-autosquash.sh | 27 +++++++++++++--------------
> t/t3900-i18n-commit.sh | 4 ----
> 3 files changed, 37 insertions(+), 19 deletions(-)
>
> diff --git a/sequencer.c b/sequencer.c
> index 5062976d10..b050a9a212 100644
> --- a/sequencer.c
> +++ b/sequencer.c
> @@ -1718,15 +1718,38 @@ static int is_pick_or_similar(enum todo_command command)
> }
> }
>
> +static size_t subject_length(const char *body)
> +{
> + size_t i, len = 0;
> + char c;
> + int blank_line = 1;
> + for (i = 0, c = body[i]; c; c = body[++i]) {
> + if (c == '\n') {
> + if (blank_line)
> + return len;
> + len = i + 1;
> + blank_line = 1;
> + } else if (!isspace(c)) {
> + blank_line = 0;
> + }
> + }
> + return blank_line ? len : i;
> +}
> +
OK, so this gets the length of the subject in "body", which is defined
as the run of characters before a newline and then a space character. So
"foo bar\n\nbaz" would return 7, but "foo bar\nbaz" would return 11.
Makes sense. (Apologies for stating the obvious here, I just had to read
this function to myself a couple of times to make sure that I understood
what it was doing.)
> static void append_squash_message(struct strbuf *buf, const char *body,
> struct replay_opts *opts)
> {
> + size_t commented_len = 0;
> +
> unlink(rebase_path_fixup_msg());
> + if (starts_with(body, "squash!") || starts_with(body, "fixup!"))
> + commented_len = subject_length(body);
> strbuf_addf(buf, "\n%c ", comment_line_char);
> strbuf_addf(buf, _("This is the commit message #%d:"),
> ++opts->current_fixup_count + 1);
> strbuf_addstr(buf, "\n\n");
> - strbuf_addstr(buf, body);
> + strbuf_add_commented_lines(buf, body, commented_len);
> + strbuf_addstr(buf, body + commented_len);
Very nice; the subject gets commented when it starts with "squash!" or
"fixup!", but the body remains uncommented. Makes sense to me.
> @@ -224,7 +223,7 @@ test_expect_success 'auto squash that matches longer sha1' '
> git cat-file blob HEAD^:file1 >actual &&
> test_cmp expect actual &&
> git cat-file commit HEAD^ >commit &&
> - grep squash commit >actual &&
> + grep "extra para" commit >actual &&
> test_line_count = 1 actual
> '
Worth checking that "squash" doesn't appear in an uncommented part of
actual? Or better yet, checking that "# squash ..." _does_ appear.
I.e., that we would leave this as:
- grep squash commit >actual &&
+ grep "^# squash" commit >actual &&
+ grep "extra para" commit >actual &&
> @@ -342,8 +341,8 @@ test_expect_success C_LOCALE_OUTPUT 'autosquash with custom inst format' '
> git cat-file blob HEAD^:file1 >actual &&
> test_cmp expect actual &&
> git cat-file commit HEAD^ >commit &&
> - grep squash commit >actual &&
> - test_line_count = 2 actual
> + grep first commit >actual &&
> + test_line_count = 3 actual
> '
Ditto.
Thanks,
Taylor
