[PATCH 1/4] exclude: stricten a length check in EXC_FLAG_ENDSWITH case

["Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>]

This block of code deals with the "basename" part only, which has the
length of "pathlen - (basename - pathname)". Stricten the length check
and remove "pathname" from the main expression to avoid confusion.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
 dir.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/dir.c b/dir.c
index cddf043..d81498e 100644
--- a/dir.c
+++ b/dir.c
@@ -561,8 +561,9 @@ int excluded_from_list(const char *pathname,
 				if (!strcmp_icase(exclude, basename))
 					return to_exclude;
 			} else if (x->flags & EXC_FLAG_ENDSWITH) {
-				if (x->patternlen - 1 <= pathlen &&
-				    !strcmp_icase(exclude + 1, pathname + pathlen - x->patternlen + 1))
+				int len = pathlen - (basename - pathname);
+				if (x->patternlen - 1 <= len &&
+				    !strcmp_icase(exclude + 1, basename + len - x->patternlen + 1))
 					return to_exclude;
 			} else {
 				if (fnmatch_icase(exclude, basename, 0) == 0)
-- 
1.8.0.rc2.11.g2b79d01