I'm going to undertake getting PCRE 6.0 merged into JavaScriptCore, and merging the UTF-16 support improvements from JSCore PCRE to PCRE 6.0. This would be mutual for both projects: 1. JSCore gets newer/better PCRE 2. PCRE gets better support. In fact, my local Win32 build already builds against it, so no code needs to be changed on the KJS side of JSCore.