[debbugs-tracker] bug#7078: closed (24.0.50; process-send-string doesn't work with long lines on Solaris)

[GNU bug Tracking System]

Your message dated Fri, 12 Aug 2016 11:40:03 -0700
with message-id <address@hidden>
and subject line Re: bug#6800: 23.1; EOT / ^D inserted into comint input string
has caused the debbugs.gnu.org bug report #6800,
regarding 24.0.50; process-send-string doesn't work with long lines on Solaris
to be marked as done.

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6800: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=6800
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> --- Begin Message ---
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>
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> Subject: 
>
> 24.0.50; process-send-string doesn't work with long lines on Solaris
>
>
>
>
> Date: 
>
> Tue, 21 Sep 2010 00:18:30 +0200
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>
>
>
> With Emacs 24 on Solaris, the code below will insert ^G into the current
> buffer. With Emacs 23.2, and with Emacs 24 on Linux, it will insert 257
> a's into the current buffer, which is the expected behaviour. The
> problem is only seen if the string passed to process-send-string
> contains lines that exceed 256 characters.
>
> (let ((process (start-process "cat" (current-buffer) "cat")))
>   (process-send-string process (format "%s\n" (make-string 257 ?a))))
>
> The bug was introduced with this change:
>
> revno: 99890
> committer: Stefan Monnier <address@hidden>
> branch nick: trunk
> timestamp: Mon 2010-04-12 22:07:48 -0400
> message:
>   Try to solve the problem of spurious EOF chars in long lines of text
>   sent to interactive subprocesses.
>   * sysdep.c (child_setup_tty): Do not enable ICANON any more.
>   (system_process_attributes): Remove unused var `ttotal'.
>   * process.c (send_process): Don't bother breaking long line with EOF
>   chars when talking to ttys any more.
>   (wait_reading_process_output): Output a warning when called in such
>   a way that it could block without being interruptible.
>
>
> -- 
> Knut Anders
>
>
>
> --- End Message ---

--- Begin Message --- Subject: Re: bug#6800: 23.1; EOT / ^D inserted into comint input string Date: Fri, 12 Aug 2016 11:40:03 -0700

On Fri, Aug 12, 2016 at 11:36 AM, Alan Third <address@hidden> wrote:

Stefan Monnier <address@hidden> writes:

>> When an input longer than 255 characters is typed into comint (or
>> shell) an EOT character (ascii 4, ^D) is inserted into the string.
>> This can cause an error depending how the sub process handles these
>> extra characters.  For example, GHC doesn't like it when an EOT
>> appears inside of a string:
>
> I believe this bug is fixed on the Emacs trunk (to become Emacs-24), but
> the fix may introduce other problems.  Apparently nobody knows how to
> fix it right and there is about as much as no documentation at all on
> this part of the behavior of ttys.

IIRC this code is no longer in Emacs. I'll close this bug.

--
Alan Third

I do know that commands longer than 4096 characters are truncated in emacs 24.3.1

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