I wasn't happy with general performance, so I rejigged what I had to address that and to also handle a few things that were tripping up the syntax highlighting.
Things like carriage returns, multiple spaces, double-quotes, carets, etc.
If you can think of anything you would type into TiddlyWiki text that could trip up regular expression handling (for syntax coloring), let me know.
Next: I want to start adding some syntax coloring for TiddlyWiki things. If you have preferences, let me know.