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-rw-r--r--css/css.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/css/css.c b/css/css.c
index 781999a40..07863a629 100644
--- a/css/css.c
+++ b/css/css.c
@@ -660,7 +660,7 @@ unsigned int css_hash(const char *s)
if (s == 0)
return 0;
for (; *s != 0; s++)
- z += *s;
+ z += *s & 0x1f; /* lower 5 bits, case insensitive */
return (z % (HASH_SIZE - 1)) + 1;
}