Re: [PATCH 1/1] sequencer: comment out the 'squash!' line

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On Mon, Jan 6, 2020 at 12:10 PM Phillip Wood <phillip.wood123@xxxxxxxxx> wrote:
>
> Hi Michael
>
> On 06/01/2020 16:04, Michael Rappazzo via GitGitGadget wrote:
> > From: Michael Rappazzo <rappazzo@xxxxxxxxx>
> >
> > When performing a squash commit, the commit comments are combined into a
> > single commit.  Since the subject line of the squash commit is used to
> > identify the squash-to target commit, it cannot offer any useful
> > contribution to the new commit message.  Therefore, the squash commit
> > subject line it commented out from the combined message (much like a
> > fixup commit's full comment).
>
> I like the idea but I think it would be better to only comment out the
> subject of the commit message if it starts with squash! for fixup!
> otherwise it may well be a useful part of the message. For correctness I
> think it would be better to comment out the subject (everything before
> the first blank line as returned by `git log --pretty=%s`) rather than
> just the first line. I've actually implemented this as part of a longer
> series that I've never got round to posting to the list[1] - feel free
> to use any of that which you find useful. That commit also shows an
> alternative way to change the --autosquash tests.
>
> [1]
> https://github.com/phillipwood/git/commit/b91b492e4aba1ac8d244859361379d5063cfc2b8

That makes sense.  Since your implementation is probably better, it
seems like the
only thing useful left from mine is the test that I added.  I'll look
to resubmit the patch
with your commit.

> > The body of a squash commit may contain additional content to add to the
> > commit message, so this part of the squash commit message is retained.
> >
> > Since this change what the expected post-rebase commit comment would look
> > like, related test expectations are adjusted to reflect the the new
> > expectation.  A new test is added for the new expectation.
> >
> > Signed-off-by: Michael Rappazzo <rappazzo@xxxxxxxxx>
> > ---
> >   sequencer.c                   |  1 +
> >   t/t3404-rebase-interactive.sh |  4 +---
> >   t/t3415-rebase-autosquash.sh  | 36 +++++++++++++++++++++++++++--------
> >   t/t3900-i18n-commit.sh        |  4 ----
> >   4 files changed, 30 insertions(+), 15 deletions(-)
> >
> > diff --git a/sequencer.c b/sequencer.c
> > index 763ccbbc45..e5602686d7 100644
> > --- a/sequencer.c
> > +++ b/sequencer.c
> > @@ -1756,6 +1756,7 @@ static int update_squash_messages(struct repository *r,
> >               strbuf_addf(&buf, _("This is the commit message #%d:"),
> >                           ++opts->current_fixup_count + 1);
> >               strbuf_addstr(&buf, "\n\n");
> > +             strbuf_addf(&buf, "%c ", comment_line_char);
> >               strbuf_addstr(&buf, body);
> >       } else if (command == TODO_FIXUP) {
> >               strbuf_addf(&buf, "\n%c ", comment_line_char);
> > diff --git a/t/t3404-rebase-interactive.sh b/t/t3404-rebase-interactive.sh
> > index ae6e55ce79..57d178d431 100755
> > --- a/t/t3404-rebase-interactive.sh
> > +++ b/t/t3404-rebase-interactive.sh
> > @@ -513,8 +513,6 @@ test_expect_success C_LOCALE_OUTPUT 'squash and fixup generate correct log messa
> >       cat >expect-squash-fixup <<-\EOF &&
> >       B
> >
> > -     D
> > -
> >       ONCE
> >       EOF
> >       git checkout -b squash-fixup E &&
> > @@ -1325,7 +1323,7 @@ test_expect_success 'rebase -i commits that overwrite untracked files (squash)'
> >       test_cmp_rev HEAD F &&
> >       rm file6 &&
> >       git rebase --continue &&
> > -     test $(git cat-file commit HEAD | sed -ne \$p) = I &&
> > +     test $(git cat-file commit HEAD | sed -ne \$p) = F &&
> >       git reset --hard original-branch2
> >   '
> >
> > diff --git a/t/t3415-rebase-autosquash.sh b/t/t3415-rebase-autosquash.sh
> > index 22d218698e..51c5a94aea 100755
> > --- a/t/t3415-rebase-autosquash.sh
> > +++ b/t/t3415-rebase-autosquash.sh
> > @@ -59,7 +59,6 @@ test_auto_squash () {
> >       git add -u &&
> >       test_tick &&
> >       git commit -m "squash! first" &&
> > -
> >       git tag $1 &&
> >       test_tick &&
> >       git rebase $2 -i HEAD^^^ &&
> > @@ -67,7 +66,7 @@ test_auto_squash () {
> >       test_line_count = 3 actual &&
> >       git diff --exit-code $1 &&
> >       test 1 = "$(git cat-file blob HEAD^:file1)" &&
> > -     test 2 = $(git cat-file commit HEAD^ | grep first | wc -l)
> > +     test 1 = $(git cat-file commit HEAD^ | grep first | wc -l)
> >   }
> >
> >   test_expect_success 'auto squash (option)' '
> > @@ -82,6 +81,27 @@ test_expect_success 'auto squash (config)' '
> >       test_must_fail test_auto_squash final-squash-config-false
> >   '
> >
> > +test_expect_success 'auto squash includes squash body but not squash directive' '
> > +     git reset --hard base &&
> > +     echo 1 >file1 &&
> > +     git add -u &&
> > +     test_tick &&
> > +     git commit -m "squash! first
> > +
> > +Additional Body" &&
> git commit --squash=first -m "Additional Body"
> would avoid the multi line argument
>
> > +     git tag squash-with-body &&
> > +     test_tick &&
> > +     git rebase --autosquash -i HEAD^^^ &&
> > +     git log --oneline >actual &&
> > +     git log --oneline --format="%s%n%b" >actual-full &&
>
> git log --format=%B ?

The difference is that %B has the extra blank line.  The check below wouldn't
see the difference, so I guess %B is easier to read.

>
> > +     test_line_count = 3 actual &&
> > +     git diff --exit-code squash-with-body &&
> > +     test 1 = "$(git cat-file blob HEAD^:file1)" &&
> > +     test 1 = $(git cat-file commit HEAD^ | grep first | wc -l) &&
> > +     test 0 = $(grep squash actual-full | wc -l) &&
>
> grep -v squash actual-full
> is simpler I think
>
> Best Wishes
>
> Phillip
>
> > +     test 1 = $(grep Additional actual-full | wc -l)
> > +'
> > +
> >   test_expect_success 'misspelled auto squash' '
> >       git reset --hard base &&
> >       echo 1 >file1 &&
> > @@ -114,7 +134,7 @@ test_expect_success 'auto squash that matches 2 commits' '
> >       test_line_count = 4 actual &&
> >       git diff --exit-code final-multisquash &&
> >       test 1 = "$(git cat-file blob HEAD^^:file1)" &&
> > -     test 2 = $(git cat-file commit HEAD^^ | grep first | wc -l) &&
> > +     test 1 = $(git cat-file commit HEAD^^ | grep first | wc -l) &&
> >       test 1 = $(git cat-file commit HEAD | grep first | wc -l)
> >   '
> >
> > @@ -152,7 +172,7 @@ test_expect_success 'auto squash that matches a sha1' '
> >       test_line_count = 3 actual &&
> >       git diff --exit-code final-shasquash &&
> >       test 1 = "$(git cat-file blob HEAD^:file1)" &&
> > -     test 1 = $(git cat-file commit HEAD^ | grep squash | wc -l)
> > +     test 0 = $(git cat-file commit HEAD^ | grep squash | wc -l)
> >   '
> >
> >   test_expect_success 'auto squash that matches longer sha1' '
> > @@ -168,7 +188,7 @@ test_expect_success 'auto squash that matches longer sha1' '
> >       test_line_count = 3 actual &&
> >       git diff --exit-code final-longshasquash &&
> >       test 1 = "$(git cat-file blob HEAD^:file1)" &&
> > -     test 1 = $(git cat-file commit HEAD^ | grep squash | wc -l)
> > +     test 0 = $(git cat-file commit HEAD^ | grep squash | wc -l)
> >   '
> >
> >   test_auto_commit_flags () {
> > @@ -192,7 +212,7 @@ test_expect_success 'use commit --fixup' '
> >   '
> >
> >   test_expect_success 'use commit --squash' '
> > -     test_auto_commit_flags squash 2
> > +     test_auto_commit_flags squash 1
> >   '
> >
> >   test_auto_fixup_fixup () {
> > @@ -228,7 +248,7 @@ test_auto_fixup_fixup () {
> >               test 1 = $(git cat-file commit HEAD^ | grep first | wc -l)
> >       elif test "$1" = "squash"
> >       then
> > -             test 3 = $(git cat-file commit HEAD^ | grep first | wc -l)
> > +             test 1 = $(git cat-file commit HEAD^ | grep first | wc -l)
> >       else
> >               false
> >       fi
> > @@ -268,7 +288,7 @@ test_expect_success C_LOCALE_OUTPUT 'autosquash with custom inst format' '
> >       test_line_count = 3 actual &&
> >       git diff --exit-code final-squash-instFmt &&
> >       test 1 = "$(git cat-file blob HEAD^:file1)" &&
> > -     test 2 = $(git cat-file commit HEAD^ | grep squash | wc -l)
> > +     test 0 = $(git cat-file commit HEAD^ | grep squash | wc -l)
> >   '
> >
> >   test_expect_success 'autosquash with empty custom instructionFormat' '
> > diff --git a/t/t3900-i18n-commit.sh b/t/t3900-i18n-commit.sh
> > index d277a9f4b7..bfab245eb3 100755
> > --- a/t/t3900-i18n-commit.sh
> > +++ b/t/t3900-i18n-commit.sh
> > @@ -226,10 +226,6 @@ test_commit_autosquash_multi_encoding () {
> >               git rev-list HEAD >actual &&
> >               test_line_count = 3 actual &&
> >               iconv -f $old -t UTF-8 "$TEST_DIRECTORY"/t3900/$msg >expect &&
> > -             if test $flag = squash; then
> > -                     subject="$(head -1 expect)" &&
> > -                     printf "\nsquash! %s\n" "$subject" >>expect
> > -             fi &&
> >               git cat-file commit HEAD^ >raw &&
> >               (sed "1,/^$/d" raw | iconv -f $new -t utf-8) >actual &&
> >               test_cmp expect actual
> >



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