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From:	Eric Adams <ericbadams AT gmail DOT com>
Date:	Tue, 3 May 2022 07:26:44 -0500
Message-ID:	<CAA=0bEM8RqNpZX4QCeoMyw_pGutWY1Hmv_=E330p1RPQZwenUQ@mail.gmail.com>
Subject:	Re: mintty phantom key presses
To:	Thomas Wolff <towo AT towo DOT net>
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On Tue, May 3, 2022 at 6:53 AM Thomas Wolff <towo AT towo DOT net> wrote:
>
>
> Am 03/05/2022 um 13:50 schrieb Eric Adams:
> > On Tue, May 3, 2022 at 12:20 AM Thomas Wolff <towo AT towo DOT net> wrote:
> >> Am 02.05.2022 um 23:54 schrieb Eric Adams:
> >>> Hi,
> >>>
> >>> I had previously reported this issue as "Possible phantom control-key state..."
> >>>
> >>> I observe that moving between cygwin mintty windows and Windows
> >>> windows causes unexpected behavior in the cygwin world.
> >>>
> >>> I took a new approach, using vi :) . In cygwin, I open a new file,
> >>> enter insert mode, hit Ctrl-V, and mouse out of the window. When I
> >>> mouse back into the cygwin edit window, my screen contains the display
> >>> string "^[[O" (note that the "^[" is vi-speak for "esc"). Examining
> >>> the resulting file with od shows:
> >>>> od -ah fdsa
> >>> 0000000 esc   [   O  nl
> >>>                  5b1b    0a4f
> >>>
> >>> Here, the nl character is inserted by vi.
> >>>
> >>> This smells like an incomplete escape sequence. If it's left at the
> >>> command line, just waiting for the user to type something, there might
> >>> be trouble.
> >>>
> >>> Am I completely off?
> >>> Thanks,
> >>> Eric Adams.
> >> CSI O is the focus off notification (CSI I is the focus in notification).
> >> Someone has switched on focus reporting mode (CSI ? 1004 h) in your
> >> session (and isn't catching the notifications).
> >> Run your application in a fresh mintty, with no other software, to test.
> >> Thomas
> >>
> > Thomas,
> > Thank you for your insight. I'm afraid I don't know how to test this
> > without some extra software involved.
> >
> > In a fresh mintty, I tried "cat - > capturefile", focussed in and out
> > of the window a few times and hit Ctrl-D. The capturefile was empty.
> >
> > In a new mintty window, I try the vi experiment, and the escape
> > sequence is captured.
> >
> > Suggestions?
> >
> > Thank you,
> > Eric Adams.
> Which system do you run? (cygwin, msys)
> Is that cygwin vi? (What does `type vi` say?)
> What are your bash/vi configuration files?

Thank you again.

I'm running a cygwin system, with cygwin tcsh shell and cygwin vi.

LAPTOP-2LPUB1MQ:~ 54> which vi
vi:      aliased to vim
LAPTOP-2LPUB1MQ:~ 55> which vim
/usr/bin/vim

I don't have any local vim customization files, my user minttyrc and
tcshrc files are attached.

Thanks again,
Eric Adams.

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