Re: emacs rendering comparisson between emacs23 and emacs26.3

[Clément Pit-Claudel]

On 28/03/2020 11.03, Eli Zaretskii wrote:
>> From: Clément Pit-Claudel <address@hidden>
>> Date: Sat, 28 Mar 2020 10:43:00 -0400
>>
>> On 28/03/2020 05.58, Eli Zaretskii wrote:
>>> I think the way to increase performance of C/C++ fontification,
>>> indentation, etc. is to use syntactic analysis in C (or another
>>> similarly fast compiled language).  Several programs/libraries are
>>> available out there for this purpose, and we should encourage
>>> interested individuals to work on making these used by our major modes
>>> that support programming languages.  The time we could do that with
>>> ad-hoc regexps and the likes of syntax-ppss has gone, IMO.
>>
>> I've looked, but I don't really know of any such libraries.
> 
> What about tree-sitter?

Neat! It looks promising.  I forgot about this one.
It seems that Atom uses it, so that's a pretty strong endorsement too!
Could it be used with Emacs 25's modules? Otherwise, how can users define new 
languages without recompiling Emacs?