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Date:	Tue, 19 May 2020 12:54:54 +0200
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Subject:	Re: Suspend doesn't work in cmd
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From:	Kacper Michajlow via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Kacper Michajlow <kasper93 AT gmail DOT com>
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On Mon, 18 May 2020 at 05:06, Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp> wrote:

> On Sun, 17 May 2020 19:57:15 +0200
> Kacper Michajlow via Cygwin <cygwin AT cygwin DOT com> wrote:
> > Hi,
> >
> > Control keys doesn't seem to be working correctly under cmd.
> >
> > STR:
> > 1. Run bash in cmd.exe
> > 2. Run anything, in my case "seq 1 100000"
> > 3. Try to suspend job with CTRL+Z or suspend printing with CTRL+S
> >
> > Ii will ignore request. Works in mintty, doesn't in cmd.
>
> Thanks for the report. This is a known problem, however,
> it is hard to fix soon.
>
> In current console implementation, ctrl-Z is processed in
> read() system call. So, if process does not call read(),
> ctlr-Z does not work.
>
> You can confirm that ctrl-Z works for cat, od, etc. which
> calls read().
>
> One solution might be to introduce a thread to handle the
> keystrokes. I wonder if it is worth enough to introduce such
> a big modification for console code.
>

Thanks for explanation. I report those bugs, because I kind of hope to get
away from mintty and use something like Windows Terminal for all envs. But
it doesn't look feasible for Cygwin.

- Kacper
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