Re: [RFC/PATCH v11 04/13] bisect--helper: `bisect_clean_state` shell function in C

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Hey Junio,

On Tue, Aug 2, 2016 at 11:16 PM, Junio C Hamano <gitster@xxxxxxxxx> wrote:
> Pranit Bauva <pranit.bauva@xxxxxxxxx> writes:
>
>> +static int bisect_clean_state(void)
>> +{
>> +     int result = 0;
>> +
>> +     /* There may be some refs packed during bisection */
>> +     struct string_list refs_for_removal = STRING_LIST_INIT_NODUP;
>> +     for_each_ref_in("refs/bisect/", mark_for_removal, (void *) &refs_for_removal);
>> +     string_list_append(&refs_for_removal, xstrdup("BISECT_HEAD"));
>> +     result = delete_refs(&refs_for_removal);
>> +     refs_for_removal.strdup_strings = 1;
>> +     string_list_clear(&refs_for_removal, 0);
>> +     remove_path(git_path_bisect_expected_rev());
>> +     remove_path(git_path_bisect_ancestors_ok());
>> +     remove_path(git_path_bisect_log());
>> +     remove_path(git_path_bisect_names());
>> +     remove_path(git_path_bisect_run());
>> +     remove_path(git_path_bisect_terms());
>> +     /* Cleanup head-name if it got left by an old version of git-bisect */
>> +     remove_path(git_path_head_name());
>> +      * Cleanup BISECT_START last to support the --no-checkout option
>> +      * introduced in the commit 4796e823a.
>> +      */
>> +     remove_path(git_path_bisect_start());
>
> I can see that refs/files-backend.c misuses it already, but
> remove_path() helper is about removing a path in the working tree,
> together with any parent directory that becomes empty due to the
> removal.  You do not expect $GIT_DIR/ to become an empty directory
> after removing $GIT_DIR/BISECT_LOG nor want to rmdir $GIT_DIR even
> if it becomes empty.  It is a wrong helper function to use here.
>
> Also you do not seem to check the error from the function to smudge
> the "result" you are returning from this function.

Yes I should combine the results from every removal.

> Isn't unlink_or_warn() more correct helper to use here?

The shell code uses rm -f which is silent and it removes only if
present. So it makes me wonder which would be more appropriate
unlink_or_warn() or remove_or_warn() or remove_path(). Is
remove_path() different from its shell equivalent "rm -f"?

>> +     return result;
>> +}

Regards,
Pranit Bauva
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