GNU bug report logs - #60127
treesit-end-of-defun: possible bug with clojure grammar

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From: Dmitry Gutov <dgutov <at> yandex.ru>
To: Yuan Fu <casouri <at> gmail.com>, Danny Freeman <danny <at> dfreeman.email>
Cc: 60127 <at> debbugs.gnu.org
Subject: bug#60127: treesit-end-of-defun: possible bug with clojure grammar
Date: Mon, 16 Jan 2023 03:56:10 +0200

On 22/12/2022 10:55, Yuan Fu wrote:
> Danny Freeman<danny <at> dfreeman.email>  writes:
> 
>> Yuan,
>>
>>>> Thank you very much for this detailed report! This seems to be some
>>>> problem with either tree-sitter or tree-sitter-clojure, where
>>>> treesit-node-first-child-for-pos gives wrong result. We’ve had similar
>>>> problem with bash before[1].
>>>>
>>>> At this point there aren’t much we can do in Emacs. If I find some time
>>>> I’ll make a reproduce recipe and submit an issue on tree-sitter-clojure.
>>>>
>>>> [1]https://github.com/tree-sitter/tree-sitter-bash/issues/139
>>>>
>>>> Yuan
>> I have a c program that I believe reproduces the problem. I'm not sure
>> how we will go about fixing it in tree-sitter-clojure, but at least we
>> have a minimal way to re-create it.
>>
>> Here is a link to the issue I created:
>> https://github.com/sogaiu/tree-sitter-clojure/issues/32
>> that also includes the c-program. I've also put it on my source hut
>> https://paste.sr.ht/~dannyfreeman/8786059276c334036877159a5b0872cd2aa6fbc0  
>>
>> If you find the time, I would appreciate it if you could confirm my
>> findings. I'm a little in over my head with this bug I'm afraid.
> I think it’s pretty good (the reproduce), the author’s modified program
> is even better. Let’s wait and see what tree-sitter’s author have to
> say.

Just to keep everyone of the same page:

clojure-tree-sitter's author posted an issue to tree-sitter last week: 
https://github.com/tree-sitter/tree-sitter/issues/2012

and, previously, he also suggested we might be able to work around it 
using treesit_search_dfs: 
https://github.com/sogaiu/tree-sitter-clojure/issues/32#issuecomment-1364830835

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