Re: [PATCH/RFC] The new IncludeIf facility doesn't DWIM when the repo is symlinked

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On Mon, May 15, 2017 at 5:20 PM, Ævar Arnfjörð Bjarmason
<avarab@xxxxxxxxx> wrote:
> I have a ~/git_tree in my homedir that's symlinked to an external
> drive, and doing "gitdir:~/git_tree/" doesn't work, because instead of
> matching against ~/git_tree it's matched against
> /mnt/some-other-storage/.
>
> Here's a WIP patch that makes this work for me, any reason I shouldn't
> finish this up & that we shouldn't be doing this? The doc don't say
> "we'll only match gitdir against the absolute resolved path" or
> anything like that, so until I checked out the implementation I didn't
> realize what was going on:

On closer inspection I can see that this was actually broken in
86f9515708 ("config: resolve symlinks in conditional include's
patterns", 2017-04-05), but works in the initial addition of
IncludeIf.

> diff --git a/config.c b/config.c
> index b4a3205da3..606acaa3f1 100644
> --- a/config.c
> +++ b/config.c
> @@ -214,6 +214,7 @@ static int include_by_gitdir(const struct
> config_options *opts,
>         struct strbuf pattern = STRBUF_INIT;
>         int ret = 0, prefix;
>         const char *git_dir;
> +       int tried_absolute = 0;
>
>         if (opts->git_dir)
>                 git_dir = opts->git_dir;
> @@ -226,6 +227,7 @@ static int include_by_gitdir(const struct
> config_options *opts,
>         strbuf_add(&pattern, cond, cond_len);
>         prefix = prepare_include_condition_pattern(&pattern);
>
> +again:
>         if (prefix < 0)
>                 goto done;
>
> @@ -245,6 +247,12 @@ static int include_by_gitdir(const struct
> config_options *opts,
>         ret = !wildmatch(pattern.buf + prefix, text.buf + prefix,
>                          icase ? WM_CASEFOLD : 0, NULL);
>
> +       if (!ret && !tried_absolute) {
> +               tried_absolute = 1;
> +               strbuf_reset(&text);
> +               strbuf_add_absolute_path(&text, git_dir);
> +               goto again;
> +       }
>  done:
>         strbuf_release(&pattern);
>         strbuf_release(&text);




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