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Date:	Mon, 27 Jan 2025 20:17:21 +0900
To:	cygwin AT cygwin DOT com
Subject:	[mintty] Problem of the control key on focus change
Message-Id:	<20250127201721.2f31acf76d494f5e13652537@nifty.ne.jp>
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From:	Takashi Yano via Cygwin <cygwin AT cygwin DOT com>
Reply-To:	Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>
Sender:	"Cygwin" <cygwin-bounces~archive-cygwin=delorie DOT com AT cygwin DOT com>

Hi Thomas,

A few days ago, Corinna asked me to check a problem of TTY.
The problem is as follows.

Reproduce steps:
(1) Open mintty.
(2) Open another mintty.
(3) Place the second mintty window over the first one.
(4) Hold ctrl key down.
(5) Press 'd' key while holding ctrl key. The second mintty
    window will be closed. Keep ctrl key still hold down.
(6) Now the first mintty window is focused. Then press 'd' key
    while holding ctrl key down.
(7) The first mintty window will not logout but displays 'd'.

I checked the pty and found the pty in the first mintty
receives just 'd' but not Ctrl-D from mintty. In other words,
fhandler_pty_master::write() is called with 'd'. So I suspect it
might be a problem of mintty. Therefore, I tried old version
of mintty. The results are:

3.7.7-1: NG
3.7.4-1: NG
2.9.6-0: OK

I guess this bug(?) was introduced between 2.x.x and 3.7.x.

Any idea?

If you need more information from pty side, please let me know.

-- 
Takashi Yano <takashi DOT yano AT nifty DOT ne DOT jp>

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