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Message-ID:	<521BC420.9030906@towo.net>
Date:	Mon, 26 Aug 2013 23:09:52 +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
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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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