[PATCH 0/8] Improve git-status --ignored

@@ -1060,6 +1060,15 @@ static enum directory_treatment treat_directory(struct dir_struct *dir,
 
 	/* This is the "show_other_directories" case */
 
+	/* might be a sub directory in an excluded directory */
+	if (!exclude) {
+		struct path_exclude_check check;
+		int dt = DT_DIR;
+		path_exclude_check_init(&check, dir);
+		exclude = is_path_excluded(&check, dirname, len, &dt);
+		path_exclude_check_clear(&check);
+	}
+
 	/*
 	 * We are looking for ignored files and our directory is not ignored,
 	 * check if it contains only ignored files

@@ -143,4 +143,31 @@ test_expect_success 'status ignored tracked directory and uncommitted file with
 	test_cmp expected actual
 '
 
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+!! tracked/
+EOF
+
+test_expect_success 'status ignored tracked directory with uncommitted file in untracked subdir with --ignore' '
+	rm -rf tracked/uncommitted &&
+	mkdir tracked/ignored &&
+	: >tracked/ignored/uncommitted &&
+	git status --porcelain --ignored >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+!! tracked/ignored/uncommitted
+EOF
+
+test_expect_success 'status ignored tracked directory with uncommitted file in untracked subdir with --ignore -u' '
+	git status --porcelain --ignored -u >actual &&
+	test_cmp expected actual
+'
+
 test_done

@@ -1273,7 +1273,6 @@ static enum path_treatment treat_one_path(struct dir_struct *dir,
 		return path_ignored;
 	case DT_DIR:
 		strbuf_addch(path, '/');
-
 		switch (treat_directory(dir, path->buf, path->len, exclude, simplify)) {
 		case show_directory:
 			break;

@@ -1343,8 +1342,7 @@ static int read_directory_recursive(struct dir_struct *dir,
 		switch (treat_path(dir, de, &path, baselen, simplify)) {
 		case path_recurse:
 			contents += read_directory_recursive(dir, path.buf,
-							     path.len, 0,
-							     simplify);
+				path.len, check_only, simplify);
 			continue;
 		case path_ignored:
 			continue;

@@ -170,4 +170,31 @@ test_expect_success 'status ignored tracked directory with uncommitted file in u
 	test_cmp expected actual
 '
 
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+!! tracked/
+EOF
+
+test_expect_success 'status ignored tracked directory with uncommitted file in tracked subdir with --ignore' '
+	: >tracked/ignored/committed &&
+	git add -f tracked/ignored/committed &&
+	git commit -m. &&
+	git status --porcelain --ignored >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+!! tracked/ignored/uncommitted
+EOF
+
+test_expect_success 'status ignored tracked directory with uncommitted file in tracked subdir with --ignore -u' '
+	git status --porcelain --ignored -u >actual &&
+	test_cmp expected actual
+'
+
 test_done

@@ -1109,16 +1109,13 @@ static int treat_file(struct dir_struct *dir, struct strbuf *path, int exclude,
 	struct path_exclude_check check;
 	int exclude_file = 0;
 
+	/* Always exclude indexed files */
+	if (index_name_exists(&the_index, path->buf, path->len, ignore_case))
+		return 1;
+
 	if (exclude)
 		exclude_file = !(dir->flags & DIR_SHOW_IGNORED);
 	else if (dir->flags & DIR_SHOW_IGNORED) {
-		/* Always exclude indexed files */
-		struct cache_entry *ce = index_name_exists(&the_index,
-		    path->buf, path->len, ignore_case);
-
-		if (ce)
-			return 1;
-
 		path_exclude_check_init(&check, dir);
 
 		if (!is_path_excluded(&check, path->buf, path->len, dtype))

@@ -122,10 +122,34 @@ cat >expected <<\EOF
 ?? .gitignore
 ?? actual
 ?? expected
+EOF
+
+test_expect_success 'status ignored tracked directory and ignored file with --ignore' '
+	echo "committed" >>.gitignore &&
+	git status --porcelain --ignored >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+EOF
+
+test_expect_success 'status ignored tracked directory and ignored file with --ignore -u' '
+	git status --porcelain --ignored -u >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
 !! tracked/
 EOF
 
 test_expect_success 'status ignored tracked directory and uncommitted file with --ignore' '
+	echo "tracked" >.gitignore &&
 	: >tracked/uncommitted &&
 	git status --porcelain --ignored >actual &&
 	test_cmp expected actual

@@ -1076,15 +1076,13 @@ static enum directory_treatment treat_directory(struct dir_struct *dir,
 	if ((dir->flags & DIR_SHOW_IGNORED) && !exclude) {
 		int ignored;
 		dir->flags &= ~DIR_SHOW_IGNORED;
-		dir->flags |= DIR_HIDE_EMPTY_DIRECTORIES;
 		ignored = read_directory_recursive(dir, dirname, len, 1, simplify);
-		dir->flags &= ~DIR_HIDE_EMPTY_DIRECTORIES;
 		dir->flags |= DIR_SHOW_IGNORED;
 
 		return ignored ? ignore_directory : show_directory;
 	}
-	if (!(dir->flags & DIR_SHOW_IGNORED) &&
-	    !(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
+
+	if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
 		return show_directory;
 	if (!read_directory_recursive(dir, dirname, len, 1, simplify))
 		return ignore_directory;

@@ -214,6 +214,29 @@ test_expect_success 'subdirectory ignore (l1)' '
 	test_cmp expect actual
 '
 
+test_expect_success 'show/hide empty ignored directory (setup)' '
+	rm top/l1/l2/l1 &&
+	rm top/l1/.gitignore
+'
+
+test_expect_success 'show empty ignored directory with --directory' '
+	(
+		cd top &&
+		git ls-files -o -i --exclude l1 --directory
+	) >actual &&
+	echo l1/ >expect &&
+	test_cmp expect actual
+'
+
+test_expect_success 'hide empty ignored directory with --no-empty-directory' '
+	(
+		cd top &&
+		git ls-files -o -i --exclude l1 --directory --no-empty-directory
+	) >actual &&
+	>expect &&
+	test_cmp expect actual
+'
+
 test_expect_success 'pattern matches prefix completely' '
 	: >expect &&
 	git ls-files -i -o --exclude "/three/a.3[abc]" >actual &&

@@ -518,7 +518,7 @@ static void wt_status_collect_untracked(struct wt_status *s)
 		dir.nr = 0;
 		dir.flags = DIR_SHOW_IGNORED;
 		if (s->show_untracked_files != SHOW_ALL_UNTRACKED_FILES)
-			dir.flags |= DIR_SHOW_OTHER_DIRECTORIES;
+			dir.flags |= DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
 		fill_directory(&dir, s->pathspec);
 		for (i = 0; i < dir.nr; i++) {
 			struct dir_entry *ent = dir.entries[i];

@@ -1071,7 +1071,7 @@ static enum directory_treatment treat_directory(struct dir_struct *dir,
 
 	/*
 	 * We are looking for ignored files and our directory is not ignored,
-	 * check if it contains only ignored files
+	 * check if it contains untracked files (i.e. is listed as untracked)
 	 */
 	if ((dir->flags & DIR_SHOW_IGNORED) && !exclude) {
 		int ignored;

@@ -1079,7 +1079,8 @@ static enum directory_treatment treat_directory(struct dir_struct *dir,
 		ignored = read_directory_recursive(dir, dirname, len, 1, simplify);
 		dir->flags |= DIR_SHOW_IGNORED;
 
-		return ignored ? ignore_directory : show_directory;
+		if (ignored)
+			return ignore_directory;
 	}
 
 	if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))

@@ -64,13 +64,35 @@ cat >expected <<\EOF
 ?? .gitignore
 ?? actual
 ?? expected
-!! untracked-ignored/
 EOF
 
-test_expect_success 'status untracked directory with ignored files with --ignore' '
+test_expect_success 'status empty untracked directory with --ignore' '
 	rm -rf ignored &&
 	mkdir untracked-ignored &&
 	mkdir untracked-ignored/test &&
+	git status --porcelain --ignored >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+EOF
+
+test_expect_success 'status empty untracked directory with --ignore -u' '
+	git status --porcelain --ignored -u >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? .gitignore
+?? actual
+?? expected
+!! untracked-ignored/
+EOF
+
+test_expect_success 'status untracked directory with ignored files with --ignore' '
 	: >untracked-ignored/ignored &&
 	: >untracked-ignored/test/ignored &&
 	git status --porcelain --ignored >actual &&

@@ -1403,12 +1403,14 @@ static int treat_leading_path(struct dir_struct *dir,
 	struct strbuf sb = STRBUF_INIT;
 	int baselen, rc = 0;
 	const char *cp;
+	int old_flags = dir->flags;
 
 	while (len && path[len - 1] == '/')
 		len--;
 	if (!len)
 		return 1;
 	baselen = 0;
+	dir->flags &= ~DIR_SHOW_OTHER_DIRECTORIES;
 	while (1) {
 		cp = path + baselen + !!baselen;
 		cp = memchr(cp, '/', path + len - cp);

@@ -1431,6 +1433,7 @@ static int treat_leading_path(struct dir_struct *dir,
 		}
 	}
 	strbuf_release(&sb);
+	dir->flags = old_flags;
 	return rc;
 }
 

@@ -32,6 +32,25 @@ test_expect_success 'status untracked directory with --ignored -u' '
 	git status --porcelain --ignored -u >actual &&
 	test_cmp expected actual
 '
+cat >expected <<\EOF
+?? untracked/uncommitted
+!! untracked/ignored
+EOF
+
+test_expect_success 'status prefixed untracked directory with --ignored' '
+	git status --porcelain --ignored untracked/ >actual &&
+	test_cmp expected actual
+'
+
+cat >expected <<\EOF
+?? untracked/uncommitted
+!! untracked/ignored
+EOF
+
+test_expect_success 'status prefixed untracked sub-directory with --ignored -u' '
+	git status --porcelain --ignored -u untracked/ >actual &&
+	test_cmp expected actual
+'
 
 cat >expected <<\EOF
 ?? .gitignore

@@ -897,8 +897,7 @@ static struct dir_entry *dir_entry_new(const char *pathname, int len)
 
 static struct dir_entry *dir_add_name(struct dir_struct *dir, const char *pathname, int len)
 {
-	if (!(dir->flags & DIR_SHOW_IGNORED) &&
-	    cache_name_exists(pathname, len, ignore_case))
+	if (cache_name_exists(pathname, len, ignore_case))
 		return NULL;
 
 	ALLOC_GROW(dir->entries, dir->nr+1, dir->alloc);

@@ -1000,9 +999,8 @@ static enum exist_status directory_exists_in_index(const char *dirname, int len)
  * traversal routine.
  *
  * Case 1: If we *already* have entries in the index under that
- * directory name, we recurse into the directory to see all the files,
- * unless the directory is excluded and we want to show ignored
- * directories
+ * directory name, we always recurse into the directory to see
+ * all the files.
  *
  * Case 2: If we *already* have that directory name as a gitlink,
  * we always continue to see it as a gitlink, regardless of whether

@@ -1037,9 +1035,6 @@ static enum directory_treatment treat_directory(struct dir_struct *dir,
 	/* The "len-1" is to strip the final '/' */
 	switch (directory_exists_in_index(dirname, len-1)) {
 	case index_directory:
-		if ((dir->flags & DIR_SHOW_OTHER_DIRECTORIES) && exclude)
-			break;
-
 		return recurse_into_directory;
 
 	case index_gitdir:

@@ -237,6 +237,32 @@ test_expect_success 'hide empty ignored directory with --no-empty-directory' '
 	test_cmp expect actual
 '
 
+test_expect_success 'show/hide empty ignored sub-directory (setup)' '
+	> top/l1/tracked &&
+	(
+		cd top &&
+		git add -f l1/tracked
+	)
+'
+
+test_expect_success 'show empty ignored sub-directory with --directory' '
+	(
+		cd top &&
+		git ls-files -o -i --exclude l1 --directory
+	) >actual &&
+	echo l1/l2/ >expect &&
+	test_cmp expect actual
+'
+
+test_expect_success 'hide empty ignored sub-directory with --no-empty-directory' '
+	(
+		cd top &&
+		git ls-files -o -i --exclude l1 --directory --no-empty-directory
+	) >actual &&
+	>expect &&
+	test_cmp expect actual
+'
+
 test_expect_success 'pattern matches prefix completely' '
 	: >expect &&
 	git ls-files -i -o --exclude "/three/a.3[abc]" >actual &&

@@ -186,7 +186,7 @@ cat >expected <<\EOF
 ?? .gitignore
 ?? actual
 ?? expected
-!! tracked/
+!! tracked/uncommitted
 EOF
 
 test_expect_success 'status ignored tracked directory and uncommitted file with --ignore' '

@@ -212,7 +212,7 @@ cat >expected <<\EOF
 ?? .gitignore
 ?? actual
 ?? expected
-!! tracked/
+!! tracked/ignored/
 EOF
 
 test_expect_success 'status ignored tracked directory with uncommitted file in untracked subdir with --ignore' '

@@ -239,7 +239,7 @@ cat >expected <<\EOF
 ?? .gitignore
 ?? actual
 ?? expected
-!! tracked/
+!! tracked/ignored/uncommitted
 EOF
 
 test_expect_success 'status ignored tracked directory with uncommitted file in tracked subdir with --ignore' '

@@ -298,6 +298,23 @@ test_expect_success 'git clean -d -x' '
 
 '
 
+test_expect_success 'git clean -d -x with ignored tracked directory' '
+
+	mkdir -p build docs &&
+	touch a.out src/part3.c docs/manual.txt obj.o build/lib.so &&
+	git clean -d -x -e src &&
+	test -f Makefile &&
+	test -f README &&
+	test -f src/part1.c &&
+	test -f src/part2.c &&
+	test ! -f a.out &&
+	test -f src/part3.c &&
+	test ! -d docs &&
+	test ! -f obj.o &&
+	test ! -d build
+
+'
+
 test_expect_success 'git clean -X' '
 
 	mkdir -p build docs &&

@@ -332,6 +349,23 @@ test_expect_success 'git clean -d -X' '
 
 '
 
+test_expect_success 'git clean -d -X with ignored tracked directory' '
+
+	mkdir -p build docs &&
+	touch a.out src/part3.c docs/manual.txt obj.o build/lib.so &&
+	git clean -d -X -e src &&
+	test -f Makefile &&
+	test -f README &&
+	test -f src/part1.c &&
+	test -f src/part2.c &&
+	test -f a.out &&
+	test ! -f src/part3.c &&
+	test -f docs/manual.txt &&
+	test ! -f obj.o &&
+	test ! -d build
+
+'
+
 test_expect_success 'clean.requireForce defaults to true' '
 
 	git config --unset clean.requireForce &&

@@ -751,6 +751,26 @@ int is_excluded_from_list(const char *pathname,
 	return -1; /* undecided */
 }
 
+static struct exclude *last_exclude_matching_from_lists(struct dir_struct *dir,
+		const char *pathname, int pathlen, const char *basename,
+		int *dtype_p)
+{
+	int i, j;
+	struct exclude_list_group *group;
+	struct exclude *exclude;
+	for (i = EXC_CMDL; i <= EXC_FILE; i++) {
+		group = &dir->exclude_list_group[i];
+		for (j = group->nr - 1; j >= 0; j--) {
+			exclude = last_exclude_matching_from_list(
+				pathname, pathlen, basename, dtype_p,
+				&group->el[j]);
+			if (exclude)
+				return exclude;
+		}
+	}
+	return NULL;
+}
+
 /*
  * Loads the exclude lists for the directory containing pathname, then
  * scans all exclude lists to determine whether pathname is excluded.

@@ -762,25 +782,13 @@ static struct exclude *last_exclude_matching(struct dir_struct *dir,
 					     int *dtype_p)
 {
 	int pathlen = strlen(pathname);
-	int i, j;
-	struct exclude_list_group *group;
-	struct exclude *exclude;
 	const char *basename = strrchr(pathname, '/');
 	basename = (basename) ? basename+1 : pathname;
 
 	prep_exclude(dir, pathname, basename-pathname);
 
-	for (i = EXC_CMDL; i <= EXC_FILE; i++) {
-		group = &dir->exclude_list_group[i];
-		for (j = group->nr - 1; j >= 0; j--) {
-			exclude = last_exclude_matching_from_list(
-				pathname, pathlen, basename, dtype_p,
-				&group->el[j]);
-			if (exclude)
-				return exclude;
-		}
-	}
-	return NULL;
+	return last_exclude_matching_from_lists(dir, pathname, pathlen,
+			basename, dtype_p);
 }
 
 /*

@@ -549,78 +549,6 @@ void add_excludes_from_file(struct dir_struct *dir, const char *fname)
 		die("cannot use %s as an exclude file", fname);
 }
 
-/*
- * Loads the per-directory exclude list for the substring of base
- * which has a char length of baselen.
- */
-static void prep_exclude(struct dir_struct *dir, const char *base, int baselen)
-{
-	struct exclude_list_group *group;
-	struct exclude_list *el;
-	struct exclude_stack *stk = NULL;
-	int current;
-
-	if ((!dir->exclude_per_dir) ||
-	    (baselen + strlen(dir->exclude_per_dir) >= PATH_MAX))
-		return; /* too long a path -- ignore */
-
-	group = &dir->exclude_list_group[EXC_DIRS];
-
-	/* Pop the exclude lists from the EXCL_DIRS exclude_list_group
-	 * which originate from directories not in the prefix of the
-	 * path being checked. */
-	while ((stk = dir->exclude_stack) != NULL) {
-		if (stk->baselen <= baselen &&
-		    !strncmp(dir->basebuf, base, stk->baselen))
-			break;
-		el = &group->el[dir->exclude_stack->exclude_ix];
-		dir->exclude_stack = stk->prev;
-		free((char *)el->src); /* see strdup() below */
-		clear_exclude_list(el);
-		free(stk);
-		group->nr--;
-	}
-
-	/* Read from the parent directories and push them down. */
-	current = stk ? stk->baselen : -1;
-	while (current < baselen) {
-		struct exclude_stack *stk = xcalloc(1, sizeof(*stk));
-		const char *cp;
-
-		if (current < 0) {
-			cp = base;
-			current = 0;
-		}
-		else {
-			cp = strchr(base + current + 1, '/');
-			if (!cp)
-				die("oops in prep_exclude");
-			cp++;
-		}
-		stk->prev = dir->exclude_stack;
-		stk->baselen = cp - base;
-		memcpy(dir->basebuf + current, base + current,
-		       stk->baselen - current);
-		strcpy(dir->basebuf + stk->baselen, dir->exclude_per_dir);
-		/*
-		 * dir->basebuf gets reused by the traversal, but we
-		 * need fname to remain unchanged to ensure the src
-		 * member of each struct exclude correctly
-		 * back-references its source file.  Other invocations
-		 * of add_exclude_list provide stable strings, so we
-		 * strdup() and free() here in the caller.
-		 */
-		el = add_exclude_list(dir, EXC_DIRS, strdup(dir->basebuf));
-		stk->exclude_ix = group->nr - 1;
-		add_excludes_from_file_to_list(dir->basebuf,
-					       dir->basebuf, stk->baselen,
-					       el, 1);
-		dir->exclude_stack = stk;
-		current = stk->baselen;
-	}
-	dir->basebuf[baselen] = '\0';
-}
-
 int match_basename(const char *basename, int basenamelen,
 		   const char *pattern, int prefix, int patternlen,
 		   int flags)

@@ -772,6 +700,78 @@ static struct exclude *last_exclude_matching_from_lists(struct dir_struct *dir,
 }
 
 /*
+ * Loads the per-directory exclude list for the substring of base
+ * which has a char length of baselen.
+ */
+static void prep_exclude(struct dir_struct *dir, const char *base, int baselen)
+{
+	struct exclude_list_group *group;
+	struct exclude_list *el;
+	struct exclude_stack *stk = NULL;
+	int current;
+
+	if ((!dir->exclude_per_dir) ||
+	    (baselen + strlen(dir->exclude_per_dir) >= PATH_MAX))
+		return; /* too long a path -- ignore */
+
+	group = &dir->exclude_list_group[EXC_DIRS];
+
+	/* Pop the exclude lists from the EXCL_DIRS exclude_list_group
+	 * which originate from directories not in the prefix of the
+	 * path being checked. */
+	while ((stk = dir->exclude_stack) != NULL) {
+		if (stk->baselen <= baselen &&
+		    !strncmp(dir->basebuf, base, stk->baselen))
+			break;
+		el = &group->el[dir->exclude_stack->exclude_ix];
+		dir->exclude_stack = stk->prev;
+		free((char *)el->src); /* see strdup() below */
+		clear_exclude_list(el);
+		free(stk);
+		group->nr--;
+	}
+
+	/* Read from the parent directories and push them down. */
+	current = stk ? stk->baselen : -1;
+	while (current < baselen) {
+		struct exclude_stack *stk = xcalloc(1, sizeof(*stk));
+		const char *cp;
+
+		if (current < 0) {
+			cp = base;
+			current = 0;
+		}
+		else {
+			cp = strchr(base + current + 1, '/');
+			if (!cp)
+				die("oops in prep_exclude");
+			cp++;
+		}
+		stk->prev = dir->exclude_stack;
+		stk->baselen = cp - base;
+		memcpy(dir->basebuf + current, base + current,
+		       stk->baselen - current);
+		strcpy(dir->basebuf + stk->baselen, dir->exclude_per_dir);
+		/*
+		 * dir->basebuf gets reused by the traversal, but we
+		 * need fname to remain unchanged to ensure the src
+		 * member of each struct exclude correctly
+		 * back-references its source file.  Other invocations
+		 * of add_exclude_list provide stable strings, so we
+		 * strdup() and free() here in the caller.
+		 */
+		el = add_exclude_list(dir, EXC_DIRS, strdup(dir->basebuf));
+		stk->exclude_ix = group->nr - 1;
+		add_excludes_from_file_to_list(dir->basebuf,
+					       dir->basebuf, stk->baselen,
+					       el, 1);
+		dir->exclude_stack = stk;
+		current = stk->baselen;
+	}
+	dir->basebuf[baselen] = '\0';
+}
+
+/*
  * Loads the exclude lists for the directory containing pathname, then
  * scans all exclude lists to determine whether pathname is excluded.
  * Returns the exclude_list element which matched, or NULL for

@@ -710,10 +710,6 @@ static void prep_exclude(struct dir_struct *dir, const char *base, int baselen)
 	struct exclude_stack *stk = NULL;
 	int current;
 
-	if ((!dir->exclude_per_dir) ||
-	    (baselen + strlen(dir->exclude_per_dir) >= PATH_MAX))
-		return; /* too long a path -- ignore */
-
 	group = &dir->exclude_list_group[EXC_DIRS];
 
 	/* Pop the exclude lists from the EXCL_DIRS exclude_list_group

@@ -725,12 +721,17 @@ static void prep_exclude(struct dir_struct *dir, const char *base, int baselen)
 			break;
 		el = &group->el[dir->exclude_stack->exclude_ix];
 		dir->exclude_stack = stk->prev;
+		dir->exclude = NULL;
 		free((char *)el->src); /* see strdup() below */
 		clear_exclude_list(el);
 		free(stk);
 		group->nr--;
 	}
 
+	/* Skip traversing into sub directories if the parent is excluded */
+	if (dir->exclude)
+		return;
+
 	/* Read from the parent directories and push them down. */
 	current = stk ? stk->baselen : -1;
 	while (current < baselen) {

@@ -749,22 +750,43 @@ static void prep_exclude(struct dir_struct *dir, const char *base, int baselen)
 		}
 		stk->prev = dir->exclude_stack;
 		stk->baselen = cp - base;
+		stk->exclude_ix = group->nr;
+		el = add_exclude_list(dir, EXC_DIRS, NULL);
 		memcpy(dir->basebuf + current, base + current,
 		       stk->baselen - current);
-		strcpy(dir->basebuf + stk->baselen, dir->exclude_per_dir);
-		/*
-		 * dir->basebuf gets reused by the traversal, but we
-		 * need fname to remain unchanged to ensure the src
-		 * member of each struct exclude correctly
-		 * back-references its source file.  Other invocations
-		 * of add_exclude_list provide stable strings, so we
-		 * strdup() and free() here in the caller.
-		 */
-		el = add_exclude_list(dir, EXC_DIRS, strdup(dir->basebuf));
-		stk->exclude_ix = group->nr - 1;
-		add_excludes_from_file_to_list(dir->basebuf,
-					       dir->basebuf, stk->baselen,
-					       el, 1);
+
+		/* Abort if the directory is excluded */
+		if (stk->baselen) {
+			int dt = DT_DIR;
+			dir->basebuf[stk->baselen - 1] = 0;
+			dir->exclude = last_exclude_matching_from_lists(dir,
+				dir->basebuf, stk->baselen - 1,
+				dir->basebuf + current, &dt);
+			dir->basebuf[stk->baselen - 1] = '/';
+			if (dir->exclude) {
+				dir->basebuf[stk->baselen] = 0;
+				dir->exclude_stack = stk;
+				return;
+			}
+		}
+
+		/* Try to read per-directory file unless path is too long */
+		if (dir->exclude_per_dir &&
+		    stk->baselen + strlen(dir->exclude_per_dir) < PATH_MAX) {
+			strcpy(dir->basebuf + stk->baselen,
+					dir->exclude_per_dir);
+			/*
+			 * dir->basebuf gets reused by the traversal, but we
+			 * need fname to remain unchanged to ensure the src
+			 * member of each struct exclude correctly
+			 * back-references its source file.  Other invocations
+			 * of add_exclude_list provide stable strings, so we
+			 * strdup() and free() here in the caller.
+			 */
+			el->src = strdup(dir->basebuf);
+			add_excludes_from_file_to_list(dir->basebuf,
+					dir->basebuf, stk->baselen, el, 1);
+		}
 		dir->exclude_stack = stk;
 		current = stk->baselen;
 	}

@@ -787,6 +809,9 @@ static struct exclude *last_exclude_matching(struct dir_struct *dir,
 
 	prep_exclude(dir, pathname, basename-pathname);
 
+	if (dir->exclude)
+		return dir->exclude;
+
 	return last_exclude_matching_from_lists(dir, pathname, pathlen,
 			basename, dtype_p);
 }

@@ -809,13 +834,10 @@ void path_exclude_check_init(struct path_exclude_check *check,
 			     struct dir_struct *dir)
 {
 	check->dir = dir;
-	check->exclude = NULL;
-	strbuf_init(&check->path, 256);
 }
 
 void path_exclude_check_clear(struct path_exclude_check *check)
 {
-	strbuf_release(&check->path);
 }
 
 /*

@@ -831,49 +853,6 @@ struct exclude *last_exclude_matching_path(struct path_exclude_check *check,
 					   const char *name, int namelen,
 					   int *dtype)
 {
-	int i;
-	struct strbuf *path = &check->path;
-	struct exclude *exclude;
-
-	/*
-	 * we allow the caller to pass namelen as an optimization; it
-	 * must match the length of the name, as we eventually call
-	 * is_excluded() on the whole name string.
-	 */
-	if (namelen < 0)
-		namelen = strlen(name);
-
-	/*
-	 * If path is non-empty, and name is equal to path or a
-	 * subdirectory of path, name should be excluded, because
-	 * it's inside a directory which is already known to be
-	 * excluded and was previously left in check->path.
-	 */
-	if (path->len &&
-	    path->len <= namelen &&
-	    !memcmp(name, path->buf, path->len) &&
-	    (!name[path->len] || name[path->len] == '/'))
-		return check->exclude;
-
-	strbuf_setlen(path, 0);
-	for (i = 0; name[i]; i++) {
-		int ch = name[i];
-
-		if (ch == '/') {
-			int dt = DT_DIR;
-			exclude = last_exclude_matching(check->dir,
-							path->buf, &dt);
-			if (exclude) {
-				check->exclude = exclude;
-				return exclude;
-			}
-		}
-		strbuf_addch(path, ch);
-	}
-
-	/* An entry in the index; cannot be a directory with subentries */
-	strbuf_setlen(path, 0);
-
 	return last_exclude_matching(check->dir, name, dtype);
 }
 

@@ -110,9 +110,11 @@ struct dir_struct {
 	 *
 	 * exclude_stack points to the top of the exclude_stack, and
 	 * basebuf contains the full path to the current
-	 * (sub)directory in the traversal.
+	 * (sub)directory in the traversal. Exclude points to the
+	 * matching exclude struct if the directory is excluded.
 	 */
 	struct exclude_stack *exclude_stack;
+	struct exclude *exclude;
 	char basebuf[PATH_MAX];
 };
 

@@ -156,8 +158,6 @@ extern int match_pathname(const char *, int,
  */
 struct path_exclude_check {
 	struct dir_struct *dir;
-	struct exclude *exclude;
-	struct strbuf path;
 };
 extern void path_exclude_check_init(struct path_exclude_check *, struct dir_struct *);
 extern void path_exclude_check_clear(struct path_exclude_check *);

@@ -444,9 +444,7 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 
 	if (pathspec) {
 		int i;
-		struct path_exclude_check check;
 
-		path_exclude_check_init(&check, &dir);
 		if (!seen)
 			seen = find_pathspecs_matching_against_index(pathspec);
 		for (i = 0; pathspec[i]; i++) {

@@ -454,7 +452,7 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 			    && !file_exists(pathspec[i])) {
 				if (ignore_missing) {
 					int dtype = DT_UNKNOWN;
-					if (is_path_excluded(&check, pathspec[i], -1, &dtype))
+					if (is_excluded(&dir, pathspec[i], &dtype))
 						dir_add_ignored(&dir, pathspec[i], strlen(pathspec[i]));
 				} else
 					die(_("pathspec '%s' did not match any files"),

@@ -462,7 +460,6 @@ int cmd_add(int argc, const char **argv, const char *prefix)
 			}
 		}
 		free(seen);
-		path_exclude_check_clear(&check);
 	}
 
 	plug_bulk_checkin();

@@ -59,7 +59,6 @@ static int check_ignore(const char *prefix, const char **pathspec)
 	const char *path, *full_path;
 	char *seen;
 	int num_ignored = 0, dtype = DT_UNKNOWN, i;
-	struct path_exclude_check check;
 	struct exclude *exclude;
 
 	/* read_cache() is only necessary so we can watch out for submodules. */

@@ -76,7 +75,6 @@ static int check_ignore(const char *prefix, const char **pathspec)
 		return 0;
 	}
 
-	path_exclude_check_init(&check, &dir);
 	/*
 	 * look for pathspecs matching entries in the index, since these
 	 * should not be ignored, in order to be consistent with

@@ -90,8 +88,7 @@ static int check_ignore(const char *prefix, const char **pathspec)
 		full_path = check_path_for_gitlink(full_path);
 		die_if_path_beyond_symlink(full_path, prefix);
 		if (!seen[i]) {
-			exclude = last_exclude_matching_path(&check, full_path,
-							     -1, &dtype);
+			exclude = last_exclude_matching(&dir, full_path, &dtype);
 			if (exclude) {
 				if (!quiet)
 					output_exclude(path, exclude);

@@ -101,7 +98,6 @@ static int check_ignore(const char *prefix, const char **pathspec)
 	}
 	free(seen);
 	clear_directory(&dir);
-	path_exclude_check_clear(&check);
 
 	return num_ignored;
 }

@@ -201,19 +201,15 @@ static void show_ru_info(void)
 	}
 }
 
-static int ce_excluded(struct path_exclude_check *check, struct cache_entry *ce)
+static int ce_excluded(struct dir_struct *dir, struct cache_entry *ce)
 {
 	int dtype = ce_to_dtype(ce);
-	return is_path_excluded(check, ce->name, ce_namelen(ce), &dtype);
+	return is_excluded(dir, ce->name, &dtype);
 }
 
 static void show_files(struct dir_struct *dir)
 {
 	int i;
-	struct path_exclude_check check;
-
-	if ((dir->flags & DIR_SHOW_IGNORED))
-		path_exclude_check_init(&check, dir);
 
 	/* For cached/deleted files we don't need to even do the readdir */
 	if (show_others || show_killed) {