GNU bug report logs - #59497
29.0.50; Wrong type argument: number-or-marker-p, nil when enabling Tree Sitter in empty buffer

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Yuan Fu <yuf011 <at> ucsd.edu>
Cc: tracker <at> debbugs.gnu.org
Subject: bug#59497: closed (29.0.50; Wrong type argument: number-or-marker-p,
 nil when enabling Tree Sitter in empty buffer)
Date: Wed, 23 Nov 2022 08:29:05 +0000

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Your message dated Tue, 22 Nov 2022 17:33:26 -0800
with message-id <46912021-BA6B-46E7-A933-542D1899D00B <at> ucsd.edu>
and subject line Re: bug#59497: 29.0.50; Wrong type argument: number-or-marker-p,  nil when enabling Tree Sitter in empty buffer
has caused the debbugs.gnu.org bug report #59497,
regarding 29.0.50; Wrong type argument: number-or-marker-p, nil when enabling Tree Sitter in empty buffer
to be marked as done.

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From: Daniel Martín <mardani29 <at> yahoo.es>
To: bug-gnu-emacs <at> gnu.org
Subject: 29.0.50; Wrong type argument: number-or-marker-p, nil when enabling
 Tree Sitter in empty buffer
Date: Wed, 23 Nov 2022 01:37:41 +0100

Steps to reproduce:

emacs -Q
C-x b foo RET
M-x python-ts-mode RET

Wrong type argument: number-or-marker-p is thrown.

The bug seems to be in treesit-ready-p, specifically at:

(> (position-bytes (1- (point-max))) treesit-max-buffer-size)

This check fails if the buffer is empty.

[Message part 3 (message/rfc822, inline)]

From: Yuan Fu <yuf011 <at> ucsd.edu>
To: Daniel Martín <mardani29 <at> yahoo.es>
Cc: 59497-done <at> debbugs.gnu.org
Subject: Re: bug#59497: 29.0.50; Wrong type argument: number-or-marker-p,  nil
 when enabling Tree Sitter in empty buffer
Date: Tue, 22 Nov 2022 17:33:26 -0800

Daniel Martín <mardani29 <at> yahoo.es> writes:

> Daniel Martín via "Bug reports for GNU Emacs, the Swiss army knife of
> text editors" <bug-gnu-emacs <at> gnu.org> writes:
>
>> Steps to reproduce:
>>
>> emacs -Q
>> C-x b foo RET
>> M-x python-ts-mode RET
>>
>> Wrong type argument: number-or-marker-p is thrown.
>>
>> The bug seems to be in treesit-ready-p, specifically at:
>>
>> (> (position-bytes (1- (point-max))) treesit-max-buffer-size)
>>
>> This check fails if the buffer is empty.
>
> I think the correct check should be:
>
> (> (1- (position-bytes (point-max))) treesit-max-buffer-size)

Thanks, this should be fixed by c69858b3f0a.

Yuan

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