Merge branch 'jc/exclude-with-gitignore' into seen

"git add ':(exclude)foo.o'" is clearly a request not to add 'foo.o',
but the command complained about listing an ignored path foo.o on
the command line, which has been corrected.

Comments?

* jc/exclude-with-gitignore:
  dir.c: do not be fooled by :(exclude) pathspec elements

Author: gitster

dir.c

@@ -2263,6 +2263,8 @@ static int exclude_matches_pathspec(const char *path, int pathlen,
 				    const struct pathspec *pathspec)
 {
 	int i;
+	int matches_exclude_magic = 0;
+	int matches_pathspec_elem = 0;
 
 	if (!pathspec || !pathspec->nr)
 		return 0;
@@ -2279,15 +2281,23 @@ static int exclude_matches_pathspec(const char *path, int pathlen,
 	for (i = 0; i < pathspec->nr; i++) {
 		const struct pathspec_item *item = &pathspec->items[i];
 		int len = item->nowildcard_len;
+		int *matches;
+
+		if (item->magic & PATHSPEC_EXCLUDE)
+			matches = &matches_exclude_magic;
+		else
+			matches = &matches_pathspec_elem;
 
 		if (len == pathlen &&
 		    !ps_strncmp(item, item->match, path, pathlen))
-			return 1;
+			*matches = 1;
 		if (len > pathlen &&
 		    item->match[pathlen] == '/' &&
 		    !ps_strncmp(item, item->match, path, pathlen))
-			return 1;
+			*matches = 1;
 	}
+	if (matches_pathspec_elem && !matches_exclude_magic)
+		return 1;
 	return 0;
 }
 

t/t2204-add-ignored.sh

@@ -89,4 +89,21 @@ do
 	'
 done
 
+test_expect_success "exclude magic would not interfere with .gitignore" '
+	test_write_lines dir file sub ign err out "*.o" >.gitignore &&
+	>foo.o &&
+	>foo.c &&
+	test_must_fail git add foo.o 2>err &&
+	test_grep "are ignored by one" err &&
+	test_grep "hint: Use -f" err &&
+
+	git add ":(exclude)foo.o" &&
+	git ls-files >actual &&
+	cat >expect <<-\EOF &&
+	.gitignore
+	foo.c
+	EOF
+	test_cmp expect actual
+'
+
 test_done