grep: ignore --recurse-submodules if --no-index is given

Since grep learned to recurse into submodules in 0281e487fd (grep: optionally recurse into submodules, 2016-12-16), using --recurse-submodules along with --no-index makes Git die(). This is unfortunate because if submodule.recurse is set in a user's ~/.gitconfig, invoking `git grep --no-index` either inside or outside a Git repository results in fatal: option not supported with --recurse-submodules Let's allow using these options together, so that setting submodule.recurse globally does not prevent using `git grep --no-index`. Using `--recurse-submodules` should not have any effect if `--no-index` is used inside a repository, as Git will recurse into the checked out submodule directories just like into regular directories. Helped-by: Junio C Hamano <gitster@pobox.com> Signed-off-by: Philippe Blain <levraiphilippeblain@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>

Philippe Blain committed Jan 30, 2020 at 13:37 UTC c56c48dd0750dc7759f5e9a33cd4a01d6162b06e
3 files changed +17 -4
Documentation/git-grep.txt
+2 -1
index c89fb569e3..ffc3a6efdc 100644 --- a/Documentation/git-grep.txt +++ b/Documentation/git-grep.txt @@ -96,7 +96,8 @@ OPTIONS Recursively search in each submodule that has been initialized and checked out in the repository. When used in combination with the <tree> option the prefix of all submodule output will be the name of - the parent project's <tree> object. + the parent project's <tree> object. This option has no effect + if `--no-index` is given. -a:: --text::
builtin/grep.c
+5 -2
index 50ce8d9461..ae2d5bbafc 100644 --- a/builtin/grep.c +++ b/builtin/grep.c @@ -958,6 +958,9 @@ int cmd_grep(int argc, const char **argv, const char *prefix) /* die the same way as if we did it at the beginning */ setup_git_directory(); } + /* Ignore --recurse-submodules if --no-index is given or implied */ + if (!use_index) + recurse_submodules = 0; /* * skip a -- separator; we know it cannot be @@ -1115,8 +1118,8 @@ int cmd_grep(int argc, const char **argv, const char *prefix) } } - if (recurse_submodules && (!use_index || untracked)) - die(_("option not supported with --recurse-submodules")); + if (recurse_submodules && untracked) + die(_("--untracked not supported with --recurse-submodules")); if (!show_in_pager && !opt.status_only) setup_pager();
t/t7814-grep-recurse-submodules.sh
+10 -1
index 946f91fa57..828cb3ba58 100755 --- a/t/t7814-grep-recurse-submodules.sh +++ b/t/t7814-grep-recurse-submodules.sh @@ -345,7 +345,16 @@ test_incompatible_with_recurse_submodules () } test_incompatible_with_recurse_submodules --untracked -test_incompatible_with_recurse_submodules --no-index + +test_expect_success 'grep --recurse-submodules --no-index ignores --recurse-submodules' ' + git grep --recurse-submodules --no-index -e "^(.|.)[\d]" >actual && + cat >expect <<-\EOF && + a:(1|2)d(3|4) + submodule/a:(1|2)d(3|4) + submodule/sub/a:(1|2)d(3|4) + EOF + test_cmp expect actual +' test_expect_success 'grep --recurse-submodules should pass the pattern type along' ' # Fixed