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builtin/grep: add grep.fallbackToNoIndex config

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Currently when git grep is used outside of a git repository without the
--no-index option git simply dies.  For convenience, add a
grep.fallbackToNoIndex configuration variable.  If set to true, git grep
behaves like git grep --no-index if it is run outside of a git
repository.  It defaults to false, preserving the current behavior.

Helped-by: Jeff King <peff@peff.net>
Helped-by: Eric Sunshine <sunshine@sunshineco.com>
Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Thomas Gummerer 2016-01-12 11:40:26 +01:00 committed by Junio C Hamano
parent 1f5101aee2
commit ecd9ba6177
4 changed files with 58 additions and 3 deletions
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4
Documentation/config.txt
View file

@ -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

4
Documentation/git-grep.txt
View file

@ -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
-------

12
builtin/grep.c
View file

@ -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

41
t/t7810-grep.sh
View file

@ -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 &&