dir: synchronize treat_leading_path() and read_directory_recursive()
Our optimization to avoid calling into read_directory_recursive() when
all pathspecs have a common leading directory mean that we need to match
the logic that read_directory_recursive() would use if we had just
called it from the root. Since it does more than call treat_path() we
need to copy that same logic.
Alternatively, we could try to change treat_path to return path_recurse
for an untracked directory under the given special circumstances that
this logic checks for, but a simple switch results in many test failures
such as 'git clean -d' not wiping out untracked but empty directories.
To work around that, we'd need the caller of treat_path to check for
path_recurse and sometimes special case it into path_untracked. In
other words, we'd still have extra logic in both places.
Needing to duplicate logic like this means it is guaranteed someone will
eventually need to make further changes and forget to update both
locations. It is tempting to just nuke the leading_directory special
casing to avoid such bugs and simplify the code, but unpack_trees'
verify_clean_subdirectory() also calls read_directory() and does so with
a non-empty leading path, so I'm hesitant to try to restructure further.
Add obnoxious warnings to treat_leading_path() and
read_directory_recursive() to try to warn people of such problems.
Signed-off-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/dir.c b/dir.c
index a42cc2a..357f959 100644
--- a/dir.c
+++ b/dir.c
@@ -1990,6 +1990,15 @@
struct untracked_cache_dir *untracked, int check_only,
int stop_at_first_file, const struct pathspec *pathspec)
{
+ /*
+ * WARNING WARNING WARNING:
+ *
+ * Any updates to the traversal logic here may need corresponding
+ * updates in treat_leading_path(). See the commit message for the
+ * commit adding this warning as well as the commit preceding it
+ * for details.
+ */
+
struct cached_dir cdir;
enum path_treatment state, subdir_state, dir_state = path_none;
struct strbuf path = STRBUF_INIT;
@@ -2101,6 +2110,15 @@
const char *path, int len,
const struct pathspec *pathspec)
{
+ /*
+ * WARNING WARNING WARNING:
+ *
+ * Any updates to the traversal logic here may need corresponding
+ * updates in treat_leading_path(). See the commit message for the
+ * commit adding this warning as well as the commit preceding it
+ * for details.
+ */
+
struct strbuf sb = STRBUF_INIT;
int prevlen, baselen;
const char *cp;
@@ -2166,6 +2184,18 @@
de->d_name[baselen-prevlen] = '\0';
state = treat_path(dir, NULL, &cdir, istate, &sb, prevlen,
pathspec);
+ if (state == path_untracked &&
+ get_dtype(cdir.de, istate, sb.buf, sb.len) == DT_DIR &&
+ (dir->flags & DIR_SHOW_IGNORED_TOO ||
+ do_match_pathspec(istate, pathspec, sb.buf, sb.len,
+ baselen, NULL, DO_MATCH_LEADING_PATHSPEC) == MATCHED_RECURSIVELY_LEADING_PATHSPEC)) {
+ add_path_to_appropriate_result_list(dir, NULL, &cdir,
+ istate,
+ &sb, baselen,
+ pathspec, state);
+ state = path_recurse;
+ }
+
if (state != path_recurse)
break; /* do not recurse into it */
if (len <= baselen)
diff --git a/t/t3011-common-prefixes-and-directory-traversal.sh b/t/t3011-common-prefixes-and-directory-traversal.sh
index 098fddc..3da5b2b 100755
--- a/t/t3011-common-prefixes-and-directory-traversal.sh
+++ b/t/t3011-common-prefixes-and-directory-traversal.sh
@@ -195,7 +195,7 @@
# ls-files doesn't have a way to request showing both untracked and ignored
# files at the same time, so use `git status --ignored`
-test_expect_failure 'git status --ignored shows same files under dir with or without pathspec' '
+test_expect_success 'git status --ignored shows same files under dir with or without pathspec' '
cat <<-EOF >expect &&
?? an_untracked_dir/
!! an_untracked_dir/ignored
diff --git a/t/t7061-wtstatus-ignore.sh b/t/t7061-wtstatus-ignore.sh
index 8436605..e4cf548 100755
--- a/t/t7061-wtstatus-ignore.sh
+++ b/t/t7061-wtstatus-ignore.sh
@@ -47,7 +47,7 @@
!! untracked/ignored
EOF
-test_expect_failure 'status of untracked directory with --ignored works with or without prefix' '
+test_expect_success 'status of untracked directory with --ignored works with or without prefix' '
git status --porcelain --ignored >tmp &&
grep untracked/ tmp >actual &&
rm tmp &&
