Re: bug:git-check-ignore exit status is wrong for negative patterns when -v option used

From: Bagas Sanjaya <bagasdotme@gmail.com>
To: Jeremy Faith <jeremy.faith@jci.com>
Cc: Git Users <git@vger.kernel.org>
Subject: Re: bug:git-check-ignore exit status is wrong for negative patterns when -v option used
Date: Wed, 28 Apr 2021 13:15:32 +0700	[thread overview]
Message-ID: <3ea4e4c8-9723-4af6-5f07-9141c3001986@gmail.com> (raw)
In-Reply-To: <CY4P132MB00885C970ACF5A277F06E40385419@CY4P132MB0088.NAMP132.PROD.OUTLOOK.COM>

On 27/04/21 23.30, Jeremy Faith wrote:
> Hi,
> 
> git version 2.31.1.362.g311531c9de
> git-check-ignore
> When a negative pattern is the last .gitignore match the -v option causes the exit status to be 0 rather than the expected 1.
> e.g say .gitignore contains  one line: !hello
> git check-ignore hello #outputs nothing
> echo $?  #shows correct exit status=1 i.e None of the provided paths are ignored.
> but
> git check-ignore -v hello #output is next line
> .gitignore:4:!hello	hello
> echo $?  #shows wrong exit status=0 i.e. One or more of the provided paths is ignored
> 
> Following change seems to fix it for me
> --- a/builtin/check-ignore.c
> +++ b/builtin/check-ignore.c
> @@ -114,7 +114,7 @@ static int check_ignore(struct dir_struct *dir,
>                  }
>                  if (!quiet && (pattern || show_non_matching))
>                          output_pattern(pathspec.items[i].original, pattern);
> -               if (pattern)
> +               if (pattern && !(pattern->flags & PATTERN_FLAG_NEGATIVE))
>                          num_ignored++;
>          }
>          free(seen);
> 
I tried to apply this patch from the mbox, but it was corrupted, so I had to
manually write the changes above. I tested that with your reproduction case and
it worked as expected.

But anyway, please send the proper patch and (preferentially) with the test
consisting of the reproduction case.

Thanks.

-- 
An old man doll... just what I always wanted! - Clara