[TxMt] Chunked undo, Language, overall slowness

[Sune Foldager]

On 04/09/2005, at 23.10, Steve Weintraub wrote:

> I've never even encountered this type of keystroke-level undo until  
> TextMate, and I find it slows me down considerably. Please make  
> chunks a preference!

Well it would have to be implemented before it can be made a  
preference! :-p. It's on TODO I know.

> Re: slowdown, I read about something involving the caching, and I  
> did flip a defaults write, so app switching does seem a bit  
> better..but tab-to-tab is really sluggish, and I'm on a dual 2 G5.  
> This is just a text editor, I can't imaging what's happing behind  
> the scenes that causes this.

Well, we are only human. There is a lot of parsing and layout and not  
to mention text layout (using ATSUI), which is actually quite slow on  
Mac. TextEdit and NSTextView in general have tons of optimizations in  
their code to cope with this. TextMate also does a good deal of  
caching here.

-- Sune.