Re: [PATCH v3] grep: stop looking at random places for .gitattributes

> grep searches for .gitattributes using "name" field in struct
> grep_source but that field is not real on-disk path name. For example,
> "grep pattern rev" fills the field with "rev:path", and Git looks for
> .gitattributes in the (non-existent but exploitable) path "rev:path"
> instead of "path".
>
> This patch passes real paths down to grep_source_load_driver() when:
>
>  - grep on work tree
>  - grep on the index
>  - grep a commit (or a tag if it points to a commit)
>
> so that these cases look up .gitattributes at proper paths.
> .gitattributes lookup is disabled in all other cases.
>
> Initial-work-by: Jeff King <peff@peff.net>
> Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
> ---