GNU bug report logs - #25529
25.1.90; js-mode: Regexp literal with unbalanced brackets breaks font-lock

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From: Dmitry Gutov <dgutov <at> yandex.ru>
To: Tom Tromey <tom <at> tromey.com>
Cc: 25529 <at> debbugs.gnu.org
Subject: bug#25529: diagnosis and one approach to a fix
Date: Mon, 6 Feb 2017 03:12:31 +0200

Hey Tom,

On 05.02.2017 20:43, Tom Tromey wrote:
> Tom> Another way is to use a regexp, see appended.
> Tom> I'll try to write a test for this soon.
> 
> Now with a test.

This is very good, thank you. Here's just one example I've come so far 
that works with the old code, but not with yours:

let x = /[/]/;

And that's probably just because the new js-syntax-propertize-regexp 
doesn't move point forward after matching (the current one leaves it 
after the closing slash), because the regexp in js-syntax-propertize is 
too primitive.

We could try to combine the regexps together, though. Then we'd move the 
syntax-ppss status check inside the rule for the opening delimiter, and 
use a simple one for the closer.

> +  "Regular expression matching the body of a JavaScript regexp literal.")

Maybe remove "the body of". The regexp matches the delimiters as well.

Thanks!

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