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-rw-r--r--Documentation/config.txt4
-rw-r--r--Documentation/git-grep.txt4
-rw-r--r--builtin/grep.c12
-rwxr-xr-xt/t7810-grep.sh41
4 files changed, 58 insertions, 3 deletions
diff --git a/Documentation/config.txt b/Documentation/config.txt
index 2e919f0df8..d41b2a61a8 100644
--- a/Documentation/config.txt
+++ b/Documentation/config.txt
@@ -1399,6 +1399,10 @@ grep.extendedRegexp::
option is ignored when the 'grep.patternType' option is set to a value
other than 'default'.
+grep.fallbackToNoIndex::
+ If set to true, fall back to git grep --no-index if git grep
+ is executed outside of a git repository. Defaults to false.
+
gpg.program::
Use this custom program instead of "gpg" found on $PATH when
making or verifying a PGP signature. The program must support the
diff --git a/Documentation/git-grep.txt b/Documentation/git-grep.txt
index 31811f16bd..1090ebcd2a 100644
--- a/Documentation/git-grep.txt
+++ b/Documentation/git-grep.txt
@@ -56,6 +56,10 @@ grep.extendedRegexp::
grep.fullName::
If set to true, enable '--full-name' option by default.
+grep.fallbackToNoIndex::
+ If set to true, fall back to git grep --no-index if git grep
+ is executed outside of a git repository. Defaults to false.
+
OPTIONS
-------
diff --git a/builtin/grep.c b/builtin/grep.c
index d04f4400d9..f8ed4f4182 100644
--- a/builtin/grep.c
+++ b/builtin/grep.c
@@ -770,9 +770,15 @@ int cmd_grep(int argc, const char **argv, const char *prefix)
PARSE_OPT_NO_INTERNAL_HELP);
grep_commit_pattern_type(pattern_type_arg, &opt);
- if (use_index && !startup_info->have_repository)
- /* die the same way as if we did it at the beginning */
- setup_git_directory();
+ if (use_index && !startup_info->have_repository) {
+ int fallback = 0;
+ git_config_get_bool("grep.fallbacktonoindex", &fallback);
+ if (fallback)
+ use_index = 0;
+ else
+ /* die the same way as if we did it at the beginning */
+ setup_git_directory();
+ }
/*
* skip a -- separator; we know it cannot be
diff --git a/t/t7810-grep.sh b/t/t7810-grep.sh
index cc4b97dd53..b540944408 100755
--- a/t/t7810-grep.sh
+++ b/t/t7810-grep.sh
@@ -821,6 +821,47 @@ test_expect_success 'outside of git repository' '
)
'
+test_expect_success 'outside of git repository with fallbackToNoIndex' '
+ rm -fr non &&
+ mkdir -p non/git/sub &&
+ echo hello >non/git/file1 &&
+ echo world >non/git/sub/file2 &&
+ cat <<-\EOF >non/expect.full &&
+ file1:hello
+ sub/file2:world
+ EOF
+ echo file2:world >non/expect.sub &&
+ (
+ GIT_CEILING_DIRECTORIES="$(pwd)/non" &&
+ export GIT_CEILING_DIRECTORIES &&
+ cd non/git &&
+ test_must_fail git -c grep.fallbackToNoIndex=false grep o &&
+ git -c grep.fallbackToNoIndex=true grep o >../actual.full &&
+ test_cmp ../expect.full ../actual.full &&
+ cd sub &&
+ test_must_fail git -c grep.fallbackToNoIndex=false grep o &&
+ git -c grep.fallbackToNoIndex=true grep o >../../actual.sub &&
+ test_cmp ../../expect.sub ../../actual.sub
+ ) &&
+
+ echo ".*o*" >non/git/.gitignore &&
+ (
+ GIT_CEILING_DIRECTORIES="$(pwd)/non" &&
+ export GIT_CEILING_DIRECTORIES &&
+ cd non/git &&
+ test_must_fail git -c grep.fallbackToNoIndex=false grep o &&
+ git -c grep.fallbackToNoIndex=true grep --exclude-standard o >../actual.full &&
+ test_cmp ../expect.full ../actual.full &&
+
+ {
+ echo ".gitignore:.*o*" &&
+ cat ../expect.full
+ } >../expect.with.ignored &&
+ git -c grep.fallbackToNoIndex grep --no-exclude o >../actual.full &&
+ test_cmp ../expect.with.ignored ../actual.full
+ )
+'
+
test_expect_success 'inside git repository but with --no-index' '
rm -fr is &&
mkdir -p is/git/sub &&