bug#5440: 23.1; buffer-file-format encoding temp buffers not reentrant

[Andrew Hyatt]

Eli Zaretskii <eliz@gnu.org> writes:

>> From: Andrew Hyatt <ahyatt@gmail.com>
>> Cc: user42@zip.com.au,  5440@debbugs.gnu.org
>> Date: Sun, 24 Jul 2016 01:06:05 -0400
>> 
>> >  -- Variable: format-alist
>> >      This list contains one format definition for each defined file
>> >      format.            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
>> >      ^^^^^^
>> >
>> > "Only one format definition per format."  But I think it won't do any
>> > harm to specifically warn about violating that.
>> >
>> > Thanks.
>> 
>> I think the original bug report had one format definition for each
>> defined file format, but was manipulating a file in one format while in
>> another format function.
>
> That's more than one format in disguise.
>
>> How about I change the documentation to just warn not to manipulate
>> other files in FROM-FN here?
>
> Can you show a proposed patch?
>
> Thanks.

Attached.

0001-Warn-against-unintentional-recursion-in-formatting.patch
Description: format-alist docs patch