bug#59693: 29.0.50; treesitter in base buffer doesn't respond to modifications in indirect buffer correctly

[Eli Zaretskii]

> Cc: 59693@debbugs.gnu.org
> From: Yuan Fu <casouri@gmail.com>
> Date: Wed, 30 Nov 2022 02:17:14 -0800
> 
> Thanks! I forgot about indirect buffers... We’ll need to make sure to
> use the parsers in the original buffer when user edits the indirect
> buffer, or something like that. I need to look into how does indirect
> buffer works.

In the insdel.c hooks where you record changes to buffer text, you should
see if the buffer has a base_buffer, and if so, update any parsers of the
base buffer as well.