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Re: input delay issues
Am 02.04.2012 22:56, schrieb Christopher Faylor:
On Mon, Apr 02, 2012 at 09:46:51PM +0200, Thomas Wolff wrote:
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.
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.
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