From: Andreas Schwab <schwab@linux-m68k.org>
To: 47535@debbugs.gnu.org
Cc: David.Biesack@Apiture.com
Subject: bug#47535: 27.2; comint shell hangs on long input
Date: Thu, 01 Apr 2021 10:04:05 +0200 [thread overview]
Message-ID: <87pmzetoqy.fsf@igel.home> (raw)
In-Reply-To: <2A7C721B-CDCD-47BF-942A-1B75DDBC12D2@apiture.com> (David Biesack via's message of "Wed, 31 Mar 2021 22:11:18 +0000")
On Mär 31 2021, David Biesack via "Bug reports for GNU Emacs, the Swiss army knife of text editors" wrote:
> Start Emacs with emacs -Q
>
> M-x shell
>
> in the shell buffer, enter
>
> echo <C-u> 1 0 0 0 x <Return>
>
> to echo 1,000 x's. Works fine.
>
> echo <C-u> 1 0 2 4 x <Return>
>
> to echo 1,024 x's. The shell buffer prints the command, then "hangs" and
> the output is never printed, and the command prompt not issued. no
> character input works (Return, etc.)
That's a limitation of the BSD tty interface. Once the input buffer is
full, no more characters can be sent, not even a newline or the EOF
character. The Linux tty interface instead discards further input until
the newline or EOF.
Andreas.
--
Andreas Schwab, schwab@linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510 2552 DF73 E780 A9DA AEC1
"And now for something completely different."
next prev parent reply other threads:[~2021-04-01 8:04 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-31 22:11 bug#47535: 27.2; comint shell hangs on long input David Biesack via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-04-01 8:04 ` Andreas Schwab [this message]
2021-05-08 11:52 ` Lars Ingebrigtsen
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