tags 18336 + patch
quit

Eli Zaretskii <eliz@gnu.org> writes:
>> 
>> I'm not sure.  Why exactly are we calling lock_file from write_region?
>
> Because write-region can be called from an unmodified buffer, I
> suppose, and from a buffer whose buffer-file-name is not the same as
> the file being written to.

So maybe we could just check those conditions?  Here's a patch,
tentatively suggested for master.