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Date: Thu, 10 Nov 2011 09:39:00 +0100
From: Gerd Hoffmann <kraxel@redhat.com>
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Subject: Re: [Qemu-devel] [F.A.Q.] the advantages of a shared tool/kernel
 Git repository, tools/perf/ and tools/kvm/
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To: Jim Paris <jim@jtan.com>
Cc: Pekka Enberg <penberg@kernel.org>, Theodore Tso <tytso@mit.edu>, Peter Zijlstra <a.p.zijlstra@chello.nl>, "kvm@vger.kernel.org list" <kvm@vger.kernel.org>, qemu-devel Developers <qemu-devel@nongnu.org>, Vince Weaver <vince@deater.net>, "linux-kernel@vger.kernel.org List" <linux-kernel@vger.kernel.org>, Arnaldo Carvalho de Melo <acme@redhat.com>, Blue Swirl <blauwirbel@gmail.com>, Alexander Graf <agraf@suse.de>, Avi Kivity <avi@redhat.com>, =?ISO-8859-1?Q?Am=E9rico_Wang?= <xiyou.wangcong@gmail.com>, Ingo Molnar <mingo@elte.hu>, Linus Torvalds <torvalds@linux-foundation.org>, Thomas Gleixner <tglx@linutronix.de>

  Hi,

>>> As far I know it is pretty much impossible to figure the
>>> foreground/background colors of the terminal you are running on.  You
>>
>> Glad to hear that, I thought I hadn't researched that much (I did). Hope
>> somebody appears and tell us how it is done :-)
> 
> In xterm, '\e]10;?\e\\' and '\e]11;?\e\\' will report the colors, e.g.:
> 
> #!/bin/bash
>   read -s -r -d \\ -p `printf '\e]10;?\e\\'` -t 1 fg
>   [ $? -ne 0 ] && fg="no response"
>   echo "foreground: $fg" | cat -v
>   read -s -r -d \\ -p `printf '\e]11;?\e\\'` -t 1 bg
>   [ $? -ne 0 ] && bg="no response"
>   echo "background: $bg" | cat -v

Works fine in xterm.  Neither gnome-terminal (i.e. vte widget) nor
konsole support this though.

cheers,
  Gerd