Re: [PATCH] grep: error out if --untracked is used with --cached

>
> The options --untracked and --cached are not compatible, but if they are
> used together, grep just silently ignores --cached and searches the
> working tree. Error out, instead, to avoid any potential confusion.
>
> Signed-off-by: Matheus Tavares <matheus.bernardino@usp.br>
> ---
>  builtin/grep.c | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/builtin/grep.c b/builtin/grep.c
> index ca259af441..392acf8cab 100644
> --- a/builtin/grep.c
> +++ b/builtin/grep.c
> @@ -1157,6 +1157,9 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
>         if (!use_index && (untracked || cached))
>                 die(_("--cached or --untracked cannot be used with --no-index"));
>
> +       if (untracked && cached)
> +               die(_("--untracked cannot be used with --cached"));
> +
>         if (!use_index || untracked) {
>                 int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
>                 hit = grep_directory(&opt, &pathspec, use_exclude, use_index);
> --
> 2.29.2