bug#67117: [PATCH] Tree-sitter: fix an issue when searching subtree backward

[Eli Zaretskii]

> From: Yuan Fu <casouri@gmail.com>
> Date: Sat, 18 Nov 2023 10:47:47 -0800
> Cc: Denis Zubarev <dvzubarev@yandex.ru>,
>  67117@debbugs.gnu.org
> 
> 
> >> Steps to reproduce the issue:
> >> 1. emacs -Q
> >> 2. M-x find-file /tmp/t.py
> >> 3. paste to the buffer
> >> 
> >> Temp(1, 2) 
> >> 
> >> 4. M-x python-ts-mode
> >> 5. Call search-subtree with backward flag
> >>   M-x eval-expression (treesit-search-subtree
> >>               (treesit--thing-at (point) "call")
> >>               (lambda (n) (equal (treesit-node-type n ) "integer"))
> >>               t)
> >> It should return the second int node (#<treesit-node integer in 9-10>), 
> >> but it returns nil.
> > 
> > Yuan, any comments to the patch and the issue in general?
> 
> LGTM. Thanks Denis, and Eli :-)

Should we install this on the emacs-29 branch or on master?