Date: Wed, 4 Apr 2012 10:02:47 -0400
From: Christopher Faylor <cgf-use-the-mailinglist-please AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: input delay issues
Message-ID: <20120404140247.GA19662@ednor.casa.cgf.cx>
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On Tue, Apr 03, 2012 at 09:31:40PM +0200, Thomas Wolff wrote:
>Am 02.04.2012 22:56, schrieb Christopher Faylor:
>>On Mon, Apr 02, 2012 at 09:46:51PM +0200, Thomas Wolff wrote:
>>>When input is typed-ahead, on a Unix or Linux systems it will be
>>>buffered and used as soon as an application looks for it.  Try this: -
>>>Run a slow command (e.g.  sleep 5) - Type "abc" while running On Linux,
>>>"abc" will be echoed on the screen (disturbing output if there is any).
>>>After the command terminates, the shell will look for input, find "abc"
>>>and redisplay it properly on the command line.
>>>
>>>In the cygwin console, "abc" remains invisible while the command is
>>>running, but it is redisplayed afterwards.  In mintty, "abc" is echoed
>>>while typed-ahead, but is *not* read and echoed by the shell after the
>>>command terminates.  Only after you then type another character, the
>>>whole command line is refreshed.
>>
>>Yes.  The console is a windows device and that's the way that Windows
>>works.  Doing it anyway else would mean keeping a separate thread in
>>Cygwin and essentially adding back CYGWIN=tty, which we're obviously
>>not going to do.
>
>OK, so there is a clear background explaining the console behavior;
>however, I described it only for completeness and to compare, the
>actual problem is with mintty/xterm/urxvt: Input which is available is
>not being detected - this is likely to be a problem with select() or
>O_NONBLOCKed read() (whichever bash uses) or both.

You have asserted this several times but I don't believe you've provided
a test case.

cgf

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