Re: Comprehensive JSX support in Emacs

[Jackson Ray Hamilton]

Hi Stefan,

Thanks for taking another look at my work.  Regarding your message…

> > > However, there is a noticeable delay when editing some lines in my
> > > 1000-line monolith.jsx file,
> > This sounds a bit worrisome.  Slow font-lock rules?
> Regarding that: if you can provide a concrete example, maybe we can help
> figure out where's the source of the performance issue and how to 
> avoid it.
Sure, I’ve attached an example.  If you try editing the three <div> 
elements with the text “Is it slow to edit this node?” then you can 
observe the performance issue with the first two elements.

> That reminds me: could you add a comment somewhere explaining what
> you do in syntax-propertize-function vs what you do in font-lock
> and inlining (some of those choices are completely obvious, but others
> are much less so with non-obvious tradeoffs).  And also why you decided
> to do it this way, obviously.
Yes, I’ll do that.

> E.g. have you considered marking the < and > in the JSX parts with
> a parenthesis-syntax?
Good idea, I’ll see if I can make that work.

Jackson

Slow JSX.jsx
Description: Text document