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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 <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -522,12 +522,14 @@ static int grep_objects(struct grep_opt *opt, const struct pathspec *pathspec,
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}
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static int grep_directory(struct grep_opt *opt, const struct pathspec *pathspec,
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int exc_std)
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int exc_std, int use_index)
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{
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struct dir_struct dir;
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int i, hit = 0;
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memset(&dir, 0, sizeof(dir));
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if (!use_index)
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dir.flags |= DIR_NO_GITLINKS;
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if (exc_std)
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setup_standard_excludes(&dir);
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@ -902,7 +904,7 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
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int use_exclude = (opt_exclude < 0) ? use_index : !!opt_exclude;
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if (list.nr)
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die(_("--no-index or --untracked cannot be used with revs."));
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hit = grep_directory(&opt, &pathspec, use_exclude);
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hit = grep_directory(&opt, &pathspec, use_exclude, use_index);
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} else if (0 <= opt_exclude) {
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die(_("--[no-]exclude-standard cannot be used for tracked contents."));
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} else if (!list.nr) {
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@ -905,6 +905,33 @@ test_expect_success 'inside git repository but with --no-index' '
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)
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'
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test_expect_success 'grep --no-index descends into repos, but not .git' '
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rm -fr non &&
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mkdir -p non/git &&
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(
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GIT_CEILING_DIRECTORIES="$(pwd)/non" &&
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export GIT_CEILING_DIRECTORIES &&
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cd non/git &&
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echo magic >file &&
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git init repo &&
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(
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cd repo &&
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echo magic >file &&
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git add file &&
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git commit -m foo &&
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echo magic >.git/file
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) &&
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cat >expect <<-\EOF &&
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file
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repo/file
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EOF
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git grep -l --no-index magic >actual &&
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test_cmp expect actual
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)
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'
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test_expect_success 'setup double-dash tests' '
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cat >double-dash <<EOF &&
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--
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