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Message-ID:	<521EF7A8.4080706@towo.net>
Date:	Thu, 29 Aug 2013 09:26:32 +0200
From:	Thomas Wolff <towo AT towo DOT net>
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To:	cygwin AT cygwin DOT com
Subject:	Re: Disabling focus reporting in mintty
References:	<CAHNuP_YEU7X-Jck5GAwZY5XdUN_QTwQoFou6=JscKzuVjyxtew AT mail DOT gmail DOT com> <521BC420 DOT 9030906 AT towo DOT net> <CAHNuP_ZJMjkY-MDz_kwDM9s7Jkv1=cJ8Zek6ARtBSXAj=tpzXw AT mail DOT gmail DOT com>
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Am 27.08.2013 14:52, schrieb John Koelndorfer:
> 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).
Hmm. I've just tried to reproduce the issue by compiling tmux 1.8 myself.
On my PPC/Debian system it supports focus reporting as expected and does 
not switch it on by default. It both passes through window focus and 
generates its own focus report if switching panes, but *only if* enabled 
in the respective pane.
I don't see any configuration option which could have affected that, either.
The behaviour you described cannot be observed; it could be observed, 
obviously, if you enable focus reporting explicitly, or run an 
application that does so (like my editor mined) and kill it with kill -9 
(so it cannot reset it).
Otherwise I don't observe your problem. Please check again, is there any 
other source of getting the reports enabled in your environment? Do you 
enable it in your .profile or .bashrc?
--
Thomas

>
> 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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