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bug#22096: 25.0.50; reading from fifo breaks display

From: Mark Oteiza
Subject: bug#22096: 25.0.50; reading from fifo breaks display
Date: Sat, 05 Dec 2015 11:06:22 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux)

Eli Zaretskii <address@hidden> writes:

>> Date: Sat, 05 Dec 2015 10:19:32 +0200
>> From: Eli Zaretskii <address@hidden>
>> Cc: address@hidden
>> > From: Mark Oteiza <address@hidden>
>> > (info "(elisp) Reading from Files") suggests I should be able to read
>> > from a FIFO.
>> I guess you mean this part:
>>      It is possible to read a special file (such as a FIFO or an I/O
>>      device) with `insert-file-contents', as long as REPLACE and VISIT
>>      are `nil'.
>> It seems this is no longer true, and we have to fix the manual to that
>> effect.
> Or maybe that text just gets the value of VISIT wrong: the code in
> question is very old, and always signaled an error for non-regular
> files when VISIT is nil.

Supposedly (according to the docstring) BEG and END have to be nil if
VISIT is t, so I should probably be getting an error about supplying
invalid arguments.

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