ignore: don't leak rules into higher directoriescmn/stacked-ignore

A rule "src" in src/.gitignore must only match subdirectories of
src/. The current code does not include this context in the match rule
and would thus consider this rule to match the top-level src/ directory
instead of the intended src/src/.

Keep track fo the context in which the rule was defined so we can
perform a prefix match.

1 files changed, 2 insertions, 0 deletions

diff --git a/src/attr_file.h b/src/attr_file.h
index 87cde7e35..93de84d12 100644
--- a/src/attr_file.h
+++ b/src/attr_file.h
@@ -52,6 +52,8 @@ extern const char *git_attr__unset;
 typedef struct {
 	char *pattern;
 	size_t length;
+	char *containing_dir;
+	size_t containing_dir_length;
 	unsigned int flags;
 } git_attr_fnmatch;