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Re: CC Mode -> Tree sitter challenge

From: Theodor Thornhill
Subject: Re: CC Mode -> Tree sitter challenge
Date: Sat, 05 Nov 2022 16:06:29 +0100

On 5 November 2022 15:55:59 CET, Eli Zaretskii <eliz@gnu.org> wrote:
>> From: Theodor Thornhill <theo@thornhill.no>
>> Cc: emacs-devel@gnu.org, casouri@gmail.com, monnier@iro.umontreal.ca
>> Date: Sat, 05 Nov 2022 15:37:58 +0100
>> I took the function 'note_mouse_highlight' from xdisp.c, pushed all
>> lines to column 0 and ran:
>> Keep in mind that the indentation result is not 100% identical, but I
>> doubt that will change anything.
>Why isn't it identical?  Is it because the indentation code is not yet
>in its final shape?

Yes, I have to find each case covered by the language and account for it. 
There's nothing inherent to Yuans code, at least I don't think so. There's 
still stuff to be done, of course.

>> I'll benchmark everything again when we're satisfied with the
>> behavior.  This is only 2 evenings worth of hacking.
>OK, thanks.  Again, looks good, especially I like how much less GC
>this produces.  But note that the, if you subtract the time taken by
>GC, CC Mode is actually slightly faster: 6.5 sec vs 9.  I wonder why
>is that.

Interesting. My guess is that there are still some improvement possible in the 
indent-region code, considering that part of treesit.el is quite new.

What do you think, Yuan? Any thoughts?

Anyways, I'll keep working on this and see how far I get next coming weeks. At 
least in performance it seems I have a good thing going here :-)


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