bug#61155: 29.0.60; build failures tree sitter

[Eli Zaretskii]

> From: Robert Pluim <rpluim@gmail.com>
> Cc: Theodor Thornhill <theo@thornhill.no>,  jpff@codemist.co.uk,
>   61155@debbugs.gnu.org
> Date: Mon, 30 Jan 2023 15:42:03 +0100
> 
> >>>>> On Mon, 30 Jan 2023 16:20:38 +0200, Eli Zaretskii <eliz@gnu.org> said:
> 
>     Eli> OK, thanks.
> 
>     Eli> Btw, it was a bitch finding which code caused the error message.  It
>     Eli> is easy to forget that the :set functions of defcustom's are called
>     Eli> during startup, and the line number shown with the message didn't
>     Eli> identify the defcustom, just the file name.  I eventually found this
>     Eli> was the culprit by running the byte-compilation command under GDB...
> 
> The line number pointed at
> 
>     (require 'treesit)
> 
> so I just took a 'emacs -Q', did M-x toggle-debug-on-error, and C-x
> C-e, and got dumped at the right location

Each one and his/her "just so" tricks ;-)