From: Johannes Schindelin <johannes.schindelin@xxxxxx>
While `git update-index` mostly ignores paths referring to index entries
whose skip-worktree bit is set, in b4d1690df11 (Teach Git to respect
skip-worktree bit (reading part), 2009-08-20), for reasons that are not
entirely obvious, the `--remove` option was made special: it _does_
remove index entries even if their skip-worktree bit is set.
Seeing as this behavior has been in place for a decade now, it does not
make sense to change it.
However, in preparation for fixing a bug in `git stash` where it
pretends that skip-worktree entries have actually been removed, we need
a mode where `git update-index` leaves all skip-worktree entries alone,
even if the `--remove` option was passed.
Signed-off-by: Johannes Schindelin <johannes.schindelin@xxxxxx>
---
Documentation/git-update-index.txt | 6 ++++++
builtin/update-index.c | 6 +++++-
t/t7012-skip-worktree-writing.sh | 15 +++++++++++++++
3 files changed, 26 insertions(+), 1 deletion(-)
diff --git a/Documentation/git-update-index.txt b/Documentation/git-update-index.txt
index 1c4d146a41..08393445e7 100644
--- a/Documentation/git-update-index.txt
+++ b/Documentation/git-update-index.txt
@@ -16,6 +16,7 @@ SYNOPSIS
[--chmod=(+|-)x]
[--[no-]assume-unchanged]
[--[no-]skip-worktree]
+ [--[no-]ignore-skip-worktree-entries]
[--[no-]fsmonitor-valid]
[--ignore-submodules]
[--[no-]split-index]
@@ -113,6 +114,11 @@ you will need to handle the situation manually.
set and unset the "skip-worktree" bit for the paths. See
section "Skip-worktree bit" below for more information.
+
+--[no-]ignore-skip-worktree-entries::
+ Do not remove skip-worktree (AKA "index-only") entries even when
+ the `--remove` option was specified.
+
--[no-]fsmonitor-valid::
When one of these flags is specified, the object name recorded
for the paths are not updated. Instead, these options
diff --git a/builtin/update-index.c b/builtin/update-index.c
index dff2f4b837..074d563df0 100644
--- a/builtin/update-index.c
+++ b/builtin/update-index.c
@@ -35,6 +35,7 @@ static int verbose;
static int mark_valid_only;
static int mark_skip_worktree_only;
static int mark_fsmonitor_only;
+static int ignore_skip_worktree_entries;
#define MARK_FLAG 1
#define UNMARK_FLAG 2
static struct strbuf mtime_dir = STRBUF_INIT;
@@ -381,7 +382,8 @@ static int process_path(const char *path, struct stat *st, int stat_errno)
* so updating it does not make sense.
* On the other hand, removing it from index should work
*/
- if (allow_remove && remove_file_from_cache(path))
+ if (!ignore_skip_worktree_entries && allow_remove &&
+ remove_file_from_cache(path))
return error("%s: cannot remove from the index", path);
return 0;
}
@@ -1013,6 +1015,8 @@ int cmd_update_index(int argc, const char **argv, const char *prefix)
{OPTION_SET_INT, 0, "no-skip-worktree", &mark_skip_worktree_only, NULL,
N_("clear skip-worktree bit"),
PARSE_OPT_NOARG | PARSE_OPT_NONEG, NULL, UNMARK_FLAG},
+ OPT_BOOL(0, "ignore-skip-worktree-entries", &ignore_skip_worktree_entries,
+ N_("do not touch index-only entries")),
OPT_SET_INT(0, "info-only", &info_only,
N_("add to index only; do not add content to object database"), 1),
OPT_SET_INT(0, "force-remove", &force_remove,
diff --git a/t/t7012-skip-worktree-writing.sh b/t/t7012-skip-worktree-writing.sh
index 9d1abe50ef..7476781979 100755
--- a/t/t7012-skip-worktree-writing.sh
+++ b/t/t7012-skip-worktree-writing.sh
@@ -134,6 +134,21 @@ test_expect_success 'git-clean, dirty case' '
test_i18ncmp expected result
'
+test_expect_success '--ignore-skip-worktree-entries leaves worktree alone' '
+ test_commit keep-me &&
+ git update-index --skip-worktree keep-me.t &&
+ rm keep-me.t &&
+
+ : ignoring the worktree &&
+ git update-index --remove --ignore-skip-worktree-entries keep-me.t &&
+ git diff-index --cached --exit-code HEAD &&
+
+ : not ignoring the worktree, a deletion is staged &&
+ git update-index --remove keep-me.t &&
+ test_must_fail git diff-index --cached --exit-code HEAD \
+ --diff-filter=D -- keep-me.t
+'
+
#TODO test_expect_failure 'git-apply adds file' false
#TODO test_expect_failure 'git-apply updates file' false
#TODO test_expect_failure 'git-apply removes file' false
--
gitgitgadget
