mintty phantom key presses

[Thomas Wolff]

Am 03.05.2022 um 14:26 schrieb Eric Adams:
> On Tue, May 3, 2022 at 6:53 AM Thomas Wolff <towo@towo.net> wrote:
>>
>> Am 03/05/2022 um 13:50 schrieb Eric Adams:
>>> On Tue, May 3, 2022 at 12:20 AM Thomas Wolff <towo@towo.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.
I do not reproduce such issue, there must be something weird configured 
in your environment.