bug#61691: (wrong-type-argument stringp nil) error when indenting some C code in c-ts-mode

[Eli Zaretskii]

> Date: Wed, 22 Feb 2023 00:23:37 +0100
> From:  Daniel Martín via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> Given the following code in c-ts-mode:
> 
> int
> foo ()
> {
>   int c;
>   if (!CHAR_VALID_P (c))
>     /* This is a comment.  */
>     c = 'a';
> 
>   return c;
> }
> 
> If point is in line "c = 'a'" and you press TAB, a (wrong-type-argument
> stringp nil) error is thrown.

With today's emacs-29 branch, I cannot reproduce this.  Was the
problem solved meanwhile?