Re: [PATCH v2] config: correct '**' matching in includeIf patterns

> The current wildmatch() call for includeIf's gitdir pattern does not
> pass the WM_PATHNAME flag. Without this flag, '*' is treated _almost_
> the same as '**' (because '*' also matches slashes) with one exception:
>
> '/**/' can match a single slash. The pattern 'foo/**/bar' matches
> 'foo/bar'.
>
> But '/*/', which is essentially what wildmatch engine sees without
> WM_PATHNAME, has to match two slashes (and '*' matches nothing). Which
> means 'foo/*/bar' cannot match 'foo/bar'. It can only match 'foo//bar'.
>
> The result of this is the current wildmatch() call works most of the
> time until the user depends on '/**/' matching no path component. And
> also '*' matches slashes while it should not, but people probably
> haven't noticed this yet. The fix is straightforward.

> +test_expect_success 'conditional include with /**/' '
> +	mkdir foo/bar &&
> +	git init foo/bar/repo &&
> +	(
> +		cd foo/bar/repo &&
> +		echo "[includeIf \"gitdir:**/foo/**/bar/**\"]path=bar7" >>.git/config &&
> +		echo "[test]seven=7" >.git/bar7 &&
> +		echo 7 >expect &&
> +		git config test.seven >actual &&
> +		test_cmp expect actual
> +	)
> +'