Re: [PATCH v5] worktree: add: introduce --checkout option

> On Tue, Mar 29, 2016 at 6:11 AM, Ray Zhang <zhanglei002@gmail.com> wrote:
>> By adding this option which defaults to true, we can use the
>> corresponding --no-checkout to make some customizations before
>> the checkout, like sparse checkout, etc.
>>
>> Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
>> Signed-off-by: Ray Zhang <zhanglei002@gmail.com>
>> ---
>> Changes since last version of this patch[v4]:
>>         t/t2025-worktree-add.sh: use test -e to test file existence.
>>         builtin/worktree.c: refactor the code a little bit.
>
> Thanks, this version is still:
>
>     Reviewed-by: Eric Sunshine <sunshine@sunshineco.com>
>
> A couple comments below...
>
>> ---
>> diff --git a/builtin/worktree.c b/builtin/worktree.c
>> @@ -284,18 +285,22 @@ static int add_worktree(const char *path, const char *refname,
>>         if (ret)
>>                 goto done;
>>
>> -       cp.argv = NULL;
>> -       argv_array_clear(&cp.args);
>> -       argv_array_pushl(&cp.args, "reset", "--hard", NULL);
>> -       cp.env = child_env.argv;
>> -       ret = run_command(&cp);
>> -       if (!ret) {
>> -               is_junk = 0;
>> -               free(junk_work_tree);
>> -               free(junk_git_dir);
>> -               junk_work_tree = NULL;
>> -               junk_git_dir = NULL;
>> +       if (opts->checkout) {
>> +               cp.argv = NULL;
>> +               argv_array_clear(&cp.args);
>> +               argv_array_pushl(&cp.args, "reset", "--hard", NULL);
>> +               cp.env = child_env.argv;
>> +               ret = run_command(&cp);
>> +               if (ret)
>> +                       goto done;
>>         }
>> +
>> +       is_junk = 0;
>> +       free(junk_work_tree);
>> +       free(junk_git_dir);
>> +       junk_work_tree = NULL;
>> +       junk_git_dir = NULL;
>
> Doing the goto-dance and outdenting the "freeing" code as suggested as
> a possible improvement by [1] probably should have been done as a
> separate preparatory patch since the result in this patch is fairly
> noisy and more difficult to review. However, it's probably not worth
> the patch churn to do so now.
>
>>  done:
>>         strbuf_reset(&sb);
>>         strbuf_addf(&sb, "%s/locked", sb_repo.buf);
>> diff --git a/t/t2025-worktree-add.sh b/t/t2025-worktree-add.sh
>> +test_expect_success '"add" worktree with --no-checkout' '
>> +       git worktree add --no-checkout -b swamp swamp &&
>> +       ! test -e swamp/init.t &&
>
> I realize that this was suggested by [2], however, a more modern way
> to state this would be:
>
>     test_path_is_missing swamp/init.t &&
>
> but, as also mentioned in [2], it's probably not worth the patch churn
> to change it now.
>
>> +       git -C swamp reset --hard &&
>> +       test_cmp init.t swamp/init.t
>> +'
>> +
>> +test_expect_success '"add" worktree with --checkout' '
>> +       git worktree add --checkout -b swmap2 swamp2 &&
>> +       test_cmp init.t swamp2/init.t
>> +'
>> +
>>  test_done
>
> [1]: http://git.661346.n2.nabble.com/PATCH-add-option-n-no-checkout-to-git-worktree-add-tp7651385p7651884.html
>
> [2]: http://article.gmane.org/gmane.comp.version-control.git/290050