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References: <CAHNuP_YEU7X-Jck5GAwZY5XdUN_QTwQoFou6=JscKzuVjyxtew AT mail DOT gmail DOT com>	<521BC420 DOT 9030906 AT towo DOT net>
Date: Tue, 27 Aug 2013 07:52:03 -0500
Message-ID: <CAHNuP_ZJMjkY-MDz_kwDM9s7Jkv1=cJ8Zek6ARtBSXAj=tpzXw@mail.gmail.com>
Subject: Re: Disabling focus reporting in mintty
From: John Koelndorfer <jkoelndorfer AT gmail DOT com>
To: cygwin AT cygwin DOT com
Content-Type: text/plain; charset=ISO-8859-1

Thomas, thanks for the suggestion.  I thought I had tried that and
indeed, when I attempted to disable focus reporting within tmux there
wasn't any change.  I'd have to guess that tmux is intercepting the
control sequence and probably discarding it.  I don't know enough
about terminal emulation to say if that's a sane thing to do.

In any case, I'm told in #tmux on freenode that focus reporting can be
disabled in tmux 1.9, so it's just a matter of waiting for that
release (or building the latest sources).

Thanks again!

On Mon, Aug 26, 2013 at 4:09 PM, Thomas Wolff <towo AT towo DOT net> wrote:
> Am 26.08.2013 22:54, schrieb John Koelndorfer:
>
>> I seem to have run into some trouble with focus reporting in mintty
>> 1.1.2 and tmux 1.8 running on a remote Arch Linux host.  tmux does not
>> seem to catch the focus reporting control characters properly and will
>> allow the "^[[O" and "^[[I" to bleed through to applications.  Here is
>> how I have tested this:
>>
>> 1.  Connect to remote host over ssh.
>> 2.  Run `cat'.
>> 3. Click on the mintty taskbar entry repeatedly.  Note that there are
>> no control characters showing up.
>>
>> Now, I repeat the above steps, but before running cat, I launched a
>> tmux session using `tmux'.
>>
>> Now, when I click the mintty taskbar, I see:
>>
>> ^[[O^[[I
>>
>> repeatedly.  In other applications things will manifest differently,
>> but my issue is specifically with irssi where "[I" shows up in the
>> input box every time I focus mintty, which is quite annoying.
>>
>> In order to try and mitigate this issue, I attempted to echo ^[[?1004l
>> per http://code.google.com/p/mintty/wiki/Changes (under version
>> 0.4.1).  Exact steps were:
>>
>> 1. Launch mintty.
>> 2. Run `cat' locally.
>> 3. Press "ESC [ ? 1 0 0 4 l", followed by ^D.  I believe this should
>> echo the correct control sequence, can someone confirm?  Nothing shows
>> up on stdout from cat, so it appears mintty is indeed interpreting
>> this as a control sequence.
>> 4. Connect to same remote host, run tmux and cat as described before.
>> 5. Focus and unfocus mintty by clicking the taskbar entry.
>>
>> However, the above steps still show the focus reporting control
>> characters bleeding through to cat.
>>
>> Am I going about disabling focus reporting correctly?  Should it do
>> what I think it should be doing?  Is there some other solution that I
>> might be missing?
>
> Reading your report above, it seems tmux enables focus reporting (and
> doesn't handle it then...).
> So as a workaround, you would need to disable it (sending that escape
> sequence) *after* you've started tmux, inside it.
> --
> Thomas
>
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