From 85975c0c7f46aeb5010121959e38c339038758a7 Mon Sep 17 00:00:00 2001 From: Jeff King Date: Mon, 7 Mar 2016 10:51:21 -0500 Subject: [PATCH] grep: turn off gitlink detection for --no-index If we are running "git grep --no-index" outside of a git repository, we behave roughly like "grep -r", examining all files in the current directory and its subdirectories. However, because we use fill_directory() to do the recursion, it will skip over any directories which look like sub-repositories. For a normal git operation (like "git grep" in a repository) this makes sense; we do not want to cross the boundary out of our current repository into a submodule. But for "--no-index" without a repository, we should look at all files, including embedded repositories. There is one exception, though: we probably should _not_ descend into ".git" directories. Doing so is inefficient and unlikely to turn up useful hits. This patch drops our use of dir.c's gitlink-detection, but we do still avoid ".git". That makes us more like tools such as "ack" or "ag", which also know to avoid cruft in .git. As a bonus, this also drops our usage of the ref code when we are outside of a repository, making the transition to pluggable ref backends cleaner. Signed-off-by: Jeff King Signed-off-by: Junio C Hamano --- builtin/grep.c | 6 ++++-- t/t7810-grep.sh | 27 +++++++++++++++++++++++++++ 2 files changed, 31 insertions(+), 2 deletions(-) diff --git a/builtin/grep.c b/builtin/grep.c index aa7435f380..111b6f6cf1 100644 --- a/builtin/grep.c +++ b/builtin/grep.c @@ -522,12 +522,14 @@ static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec, } static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec, - int exc_std) + int exc_std, int use_index) { struct dir_struct dir; int i, hit = 0; memset(&dir, 0, sizeof(dir)); + if (!use_index) + dir.flags |= DIR_NO_GITLINKS; if (exc_std) setup_standard_excludes(&dir); @@ -902,7 +904,7 @@ int cmd_grep(int argc, const char **argv, const char *prefix) int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude; if (list.nr) die(_("--no-index or --untracked cannot be used with revs.")); - hit = grep_directory(&opt, &pathspec, use_exclude); + hit = grep_directory(&opt, &pathspec, use_exclude, use_index); } else if (0 <= opt_exclude) { die(_("--[no-]exclude-standard cannot be used for tracked contents.")); } else if (!list.nr) { diff --git a/t/t7810-grep.sh b/t/t7810-grep.sh index b540944408..1e72971a16 100755 --- a/t/t7810-grep.sh +++ b/t/t7810-grep.sh @@ -905,6 +905,33 @@ test_expect_success 'inside git repository but with --no-index' ' ) ' +test_expect_success 'grep --no-index descends into repos, but not .git' ' + rm -fr non && + mkdir -p non/git && + ( + GIT_CEILING_DIRECTORIES="$(pwd)/non" && + export GIT_CEILING_DIRECTORIES && + cd non/git && + + echo magic >file && + git init repo && + ( + cd repo && + echo magic >file && + git add file && + git commit -m foo && + echo magic >.git/file + ) && + + cat >expect <<-\EOF && + file + repo/file + EOF + git grep -l --no-index magic >actual && + test_cmp expect actual + ) +' + test_expect_success 'setup double-dash tests' ' cat >double-dash <