Originally posted by: zion
Is there a way I can just save [the LimitedSharpen script] as a plug-in so I don't have to include the whole thing in my scripts?

Probably! In general, scripts can be given an '.avsi' extension, stuck in the plugins sub-directory of AviSynth, and they will auto-load. I don't know for sure that will work here, but I'll be trying it myself shortly, too.

[edit]
OK! After messing around with MaskTools and colourspace conversions, I've got it working. Lookin' good...