bug#59738: c-ts-mode is slow with large buffers.

[Eli Zaretskii]

> Date: Thu, 1 Dec 2022 11:50:05 +0000
> From: Alan Mackenzie <acm@muc.de>
> 
> Hello, Emacs.
> 
> In an up to date (2022-11-30) master started as $ emacs --no-desktop:
> 
> The file .../drivers/gpu/drm/amd/include/asic_reg/dce/dce_12_0_sh_mask.h
> in the Linux source tree is 6.8 MB big, consisting of a large number of
> #defines and comments, but nothing else.

Please post the file (compressed), or tell how to access it on your
machine.