LibRegex: Account for uppercase characters in insensitive patterns

Author: https://github.com/alimpfard
Commit: 5b45223d5f
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5403
Reviewed-by: https://github.com/gmta ✅

Libraries/LibRegex/RegexByteCode.h

@@ -117,8 +117,8 @@ enum class BoundaryCheckType : ByteCodeValueType {
 };
 
 struct CharRange {
-    u32 const from;
-    u32 const to;
+    u32 from;
+    u32 to;
 
     CharRange(u64 value)
         : from(value >> 32)
@@ -213,6 +213,12 @@ public:
         Base::extend(other);
     }
 
+    template<SameAs<Vector<ByteCodeValueType>> T>
+    void extend(T other)
+    {
+        Base::append(move(other));
+    }
+
     template<typename... Args>
     void empend(Args&&... args)
     {