This fixes "git diff", "git diff-files" and "git diff-index" to work correctly under worktree setup. Because diff* family works in many modes and not all of them require worktree, Junio made a nice summary (with a little modification from me): * diff-files is about comparing with work tree, so it obviously needs a work tree; * diff-index also does, except "diff-index --cached" or "diff --cached TREE" * no-index is about random files outside git context, so it obviously doesn't need any work tree; * comparing two (or more) trees doesn't; * comparing two blobs doesn't; * comparing a blob with a random file doesn't; Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@xxxxxxxxx> --- builtin-diff-index.c | 2 + builtin-diff.c | 3 ++ git.c | 2 +- t/t1501-worktree.sh | 59 ++++++++++++++++++++++++++++++++++++++++++++++++- 4 files changed, 63 insertions(+), 3 deletions(-) diff --git a/builtin-diff-index.c b/builtin-diff-index.c index 17d851b..0483749 100644 --- a/builtin-diff-index.c +++ b/builtin-diff-index.c @@ -39,6 +39,8 @@ int cmd_diff_index(int argc, const char **argv, const char *prefix) if (rev.pending.nr != 1 || rev.max_count != -1 || rev.min_age != -1 || rev.max_age != -1) usage(diff_cache_usage); + if (!cached) + setup_work_tree(); if (read_cache() < 0) { perror("read_cache"); return -1; diff --git a/builtin-diff.c b/builtin-diff.c index 7ffea97..037c303 100644 --- a/builtin-diff.c +++ b/builtin-diff.c @@ -122,6 +122,8 @@ static int builtin_diff_index(struct rev_info *revs, usage(builtin_diff_usage); argv++; argc--; } + if (!cached) + setup_work_tree(); /* * Make sure there is one revision (i.e. pending object), * and there is no revision filtering parameters. @@ -225,6 +227,7 @@ static int builtin_diff_files(struct rev_info *revs, int argc, const char **argv (revs->diffopt.output_format & DIFF_FORMAT_PATCH)) revs->combine_merges = revs->dense_combined_merges = 1; + setup_work_tree(); if (read_cache() < 0) { perror("read_cache"); return -1; diff --git a/git.c b/git.c index 37b1d76..fdb0f71 100644 --- a/git.c +++ b/git.c @@ -286,7 +286,7 @@ static void handle_internal_command(int argc, const char **argv) { "count-objects", cmd_count_objects, RUN_SETUP }, { "describe", cmd_describe, RUN_SETUP }, { "diff", cmd_diff }, - { "diff-files", cmd_diff_files, RUN_SETUP }, + { "diff-files", cmd_diff_files, RUN_SETUP | NEED_WORK_TREE }, { "diff-index", cmd_diff_index, RUN_SETUP }, { "diff-tree", cmd_diff_tree, RUN_SETUP }, { "fast-export", cmd_fast_export, RUN_SETUP }, diff --git a/t/t1501-worktree.sh b/t/t1501-worktree.sh index 2ee88d8..e9e352c 100755 --- a/t/t1501-worktree.sh +++ b/t/t1501-worktree.sh @@ -28,6 +28,7 @@ test_rev_parse() { [ $# -eq 0 ] && return } +EMPTY_TREE=$(git write-tree) mkdir -p work/sub/dir || exit 1 mv .git repo.git || exit 1 @@ -106,12 +107,66 @@ test_expect_success 'repo finds its work tree from work tree, too' ' ' test_expect_success '_gently() groks relative GIT_DIR & GIT_WORK_TREE' ' - cd repo.git/work/sub/dir && + (cd repo.git/work/sub/dir && GIT_DIR=../../.. GIT_WORK_TREE=../.. GIT_PAGER= \ git diff --exit-code tracked && echo changed > tracked && ! GIT_DIR=../../.. GIT_WORK_TREE=../.. GIT_PAGER= \ - git diff --exit-code tracked + git diff --exit-code tracked) +' +cat > diff-index-cached.expected <<\EOF +:000000 100644 0000000000000000000000000000000000000000 e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 A sub/dir/tracked +EOF +cat > diff-index.expected <<\EOF +:000000 100644 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 A sub/dir/tracked +EOF + + +test_expect_success 'git diff-index' ' + GIT_DIR=repo.git GIT_WORK_TREE=repo.git/work git diff-index $EMPTY_TREE > result && + cmp diff-index.expected result && + GIT_DIR=repo.git git diff-index --cached $EMPTY_TREE > result && + cmp diff-index-cached.expected result +' +cat >diff-files.expected <<\EOF +:100644 100644 e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 0000000000000000000000000000000000000000 M sub/dir/tracked +EOF + +test_expect_success 'git diff-files' ' + GIT_DIR=repo.git GIT_WORK_TREE=repo.git/work git diff-files > result && + cmp diff-files.expected result +' + +cat >diff-TREE.expected <<\EOF +diff --git a/sub/dir/tracked b/sub/dir/tracked +new file mode 100644 +index 0000000..5ea2ed4 +--- /dev/null ++++ b/sub/dir/tracked +@@ -0,0 +1 @@ ++changed +EOF +cat >diff-TREE-cached.expected <<\EOF +diff --git a/sub/dir/tracked b/sub/dir/tracked +new file mode 100644 +index 0000000..e69de29 +EOF +cat >diff-FILES.expected <<\EOF +diff --git a/sub/dir/tracked b/sub/dir/tracked +index e69de29..5ea2ed4 100644 +--- a/sub/dir/tracked ++++ b/sub/dir/tracked +@@ -0,0 +1 @@ ++changed +EOF + +test_expect_success 'git diff' ' + GIT_DIR=repo.git GIT_WORK_TREE=repo.git/work git diff $EMPTY_TREE > result && + cmp diff-TREE.expected result && + GIT_DIR=repo.git git diff --cached $EMPTY_TREE > result && + cmp diff-TREE-cached.expected result && + GIT_DIR=repo.git GIT_WORK_TREE=repo.git/work git diff > result && + cmp diff-FILES.expected result ' test_done -- 1.6.0.96.g2fad1.dirty -- To unsubscribe from this list: send the line "unsubscribe git" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html