bug#71518: 30.0.50; Errors during redisplay with c++-ts-mode

[Eli Zaretskii]

> Cc: 71518@debbugs.gnu.org, casouri@gmail.com
> Date: Sat, 22 Jun 2024 19:56:34 +0300
> From: Eli Zaretskii <eliz@gnu.org>
> 
> Hmm... I still see an error message in *Messages* after installing
> this (I have grammar library version 0.22.2):
> 
>   Error during redisplay: (jit-lock-function 1) signaled (treesit-query-error 
> "Node type error at" 2 "(virtual) @font-lock-keyword-face [\"auto\" 
> \"_Atomic\" \"break\" \"case\" \"const\" \"continue\" \"default\" \"do\" 
> \"else\" \"enum\" \"extern\" \"for\" \"goto\" \"if\" \"inline\" \"register\" 
> \"restrict\" \"return\" \"sizeof\" \"static\" \"struct\" \"switch\" 
> \"typedef\" \"union\" \"volatile\" \"while\"] @font-lock-keyword-face" "Debug 
> the query with `treesit-query-validate'")
> 
> Any ideas or suggestions?  "virtual" is highlighted, though, so I
> guess this is a matter of suppressing the errors or something?

E.g., you can see in go-ts-mode.el how the code probes whether a
certain query is supported, and uses it only if it is.