GNU bug report logs - #15294
24.3.50; js2-mode parser is several times slower in lexical-binding mode

Previous Next

Full log

View this message in rfc822 format

From: Dmitry Gutov <dgutov <at> yandex.ru>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: 15294 <at> debbugs.gnu.org
Subject: bug#15294: 24.3.50; js2-mode parser is several times slower in lexical-binding mode
Date: Sat, 05 Oct 2013 06:27:19 +0300

On 04.10.2013 16:52, Stefan Monnier wrote:
>> Not sure if I should close this issue now or at least wait until
>> byte-compile--use-old-handlers is nil by default.
>
> Your call.  I'm not completely sure when we should change it: setting it
> to nil will mean that pretty much any file compiled with the new Emacs
> won't run on older Emacsen.  I think I'd like to see 24.4 release before
> making the change.

No problem, guess then I'll leave this open until then.

I'll do the code reshuffling discussed earlier, but actually having a 
performance improvement will be a better reason to switch to lexical 
binding.

> But please do set it in your .emacs ASAP so it gets wider testing.

Good idea, done.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.