Removed weak optimization for ignorecase skipping

1 files changed, 3 insertions, 13 deletions

diff --git a/match.c b/match.c
index 870b4d0..77f5a75 100644
--- a/match.c
+++ b/match.c
@@ -269,19 +269,9 @@ static match_t *_next_match(match_context_t *ctx, const char *str, pat_t *pat, p
     // Performance optimization: if the pattern starts with a string literal,
     // we can just rely on the highly optimized memmem() implementation to skip
     // past areas where we know we won't find a match.
-    if (!skip && first->type == BP_STRING && first->min_matchlen > 0) {
-        if (ctx->ignorecase) {
-            char c1 = first->args.string[0];
-            char *upper = memchr(str, toupper(c1), (size_t)(str - ctx->end));
-            char *lower = isalpha(c1) ? memchr(str, tolower(c1), (size_t)(str - ctx->end)) : NULL;
-            if (upper && lower)
-                str = upper < lower ? upper : lower;
-            else if (upper) str = upper;
-            else if (lower) str = lower;
-        } else {
-            char *found = memmem(str, (size_t)(ctx->end - str), first->args.string, first->min_matchlen);
-            str = found ? found : ctx->end;
-        }
+    if (!skip && first->type == BP_STRING && first->min_matchlen > 0 && !ctx->ignorecase) {
+        char *found = memmem(str, (size_t)(ctx->end - str), first->args.string, first->min_matchlen);
+        str = found ? found : ctx->end;
     }
 
     if (str > ctx->end) return NULL;