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bug#44303: 28.0.50; json-pretty-print-buffer creates spurious lock file
From: |
Lars Ingebrigtsen |
Subject: |
bug#44303: 28.0.50; json-pretty-print-buffer creates spurious lock file |
Date: |
Fri, 30 Oct 2020 14:28:59 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Simen Heggestøyl <simenheg@runbox.com> writes:
> Given a file named 'test.json' with the following content: {}
>
>>From 'emacs -Q', visit the file and call 'json-pretty-print-buffer'.
>
> The buffer stays unchanged as expected since the pretty printed content
> is identical to the original. The buffer is not marked as modified (also
> expected), but a spurious lock file '.#test.json' has been created.
Yup. It's this code in Freplace_buffer_contents:
if (!inhibit_modification_hooks)
{
prepare_to_modify_buffer (BEGV, ZV, NULL);
specbind (Qinhibit_modification_hooks, Qt);
modification_hooks_inhibited = true;
}
prepare_to_modify_buffer creates the backup file.
But is that even needed here? Don't the later
Finsert_buffer_substring/del_range_both functions do the necessary
bookkeeping?
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no