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grep: die gracefully when outside repository

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Die gracefully when `git grep --no-index` is run outside of a Git
repository and the path is outside the directory tree.

If you are not in a Git repository and say:

    git grep --no-index search ..

You trigger a `BUG`:

    BUG: environment.c:213: git environment hasn't been setup
    Aborted (core dumped)

Because `..` is a valid path which is treated as a pathspec. Then
`pathspec` figures out that it is not in the current directory tree. The
`BUG` is triggered when `pathspec` tries to advise the user about how the
path is not in the current (non-existing) repository.

Reported-by: ks1322 ks1322 <ks1322@gmail.com>
Helped-by: Junio C Hamano <gitster@pobox.com>
Signed-off-by: Kristoffer Haugsbakk <code@khaugsbakk.name>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Kristoffer Haugsbakk 2023-10-20 18:40:07 +02:00 committed by Junio C Hamano
parent a9ecda2788
commit b1688ea02d
2 changed files with 33 additions and 1 deletions
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7
pathspec.c
View File

@ -467,7 +467,12 @@ static void init_pathspec_item(struct pathspec_item *item, unsigned flags,
match = prefix_path_gently(prefix, prefixlen,
&prefixlen, copyfrom);
if (!match) {
const char *hint_path = get_git_work_tree();
const char *hint_path;
if (!have_git_dir())
die(_("'%s' is outside the directory tree"),
copyfrom);
hint_path = get_git_work_tree();
if (!hint_path)
hint_path = get_git_dir();
die(_("%s: '%s' is outside repository at '%s'"), elt,

27
t/t7810-grep.sh
View File

@ -1234,6 +1234,33 @@ test_expect_success 'outside of git repository with fallbackToNoIndex' '
)
'
test_expect_success 'no repository with path outside $cwd' '
test_when_finished rm -fr non &&
rm -fr non &&
mkdir -p non/git/sub non/tig &&
(
GIT_CEILING_DIRECTORIES="$(pwd)/non" &&
export GIT_CEILING_DIRECTORIES &&
cd non/git &&
test_expect_code 128 git grep --no-index search .. 2>error &&
grep "is outside the directory tree" error
) &&
(
GIT_CEILING_DIRECTORIES="$(pwd)/non" &&
export GIT_CEILING_DIRECTORIES &&
cd non/git &&
test_expect_code 128 git grep --no-index search ../tig 2>error &&
grep "is outside the directory tree" error
) &&
(
GIT_CEILING_DIRECTORIES="$(pwd)/non" &&
export GIT_CEILING_DIRECTORIES &&
cd non/git &&
test_expect_code 128 git grep --no-index search ../non 2>error &&
grep "no such path in the working tree" error
)
'
test_expect_success 'inside git repository but with --no-index' '
rm -fr is &&
mkdir -p is/git/sub &&