GNU bug report logs - #61356
29.0.60; wrong-type-argument in treesit-indent-region when indenting a C buffer

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Daniel Martín <mardani29 <at> yahoo.es>, Yuan Fu <casouri <at> gmail.com>, Theodor Thornhill <theo <at> thornhill.no>
Cc: 61356 <at> debbugs.gnu.org
Subject: bug#61356: 29.0.60; wrong-type-argument in treesit-indent-region when indenting a C buffer
Date: Thu, 09 Feb 2023 12:20:45 +0200

> Date: Tue, 07 Feb 2023 23:20:09 +0100
> From:  Daniel Martín via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs <at> gnu.org>
> 
> 
> Steps to reproduce the problem:
> 
> emacs -Q
> C-x C-f emacs/src/xdisp.c RET
> M-x c-ts-mode RET
> C-x h
> TAB
> 
> Expected result:
> 
> The buffer is reindented.
> 
> Actual results:
> 
> The operation fails with this error:
> 
> Debugger entered--Lisp error: (wrong-type-argument integer-or-marker-p nil)
>   treesit-indent-region(1 1214226)
>   indent-region(1 1214226)
>   indent-for-tab-command(nil)
>   funcall-interactively(indent-for-tab-command nil)
>   call-interactively(indent-for-tab-command nil nil)
>   command-execute(indent-for-tab-command)

Thank you for your report.

Yuan and Theo, could you please look into this?  I briefly stepped
through the code involved in the problem, and it sounds like it makes
some assumptions regarding the nodes which are not necessarily true in
Real Life.

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