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[atomi <atomi@xxxxxxxxx>]

I solved my issue by overriding Cr in tmux as gnome-terminal for
whatever reason does not support \033]112\007

set-option -g terminal-overrides ',xterm*:Cr=\E]12;gray\007'

https://github.com/tmux/tmux/issues/266

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https://bugs.launchpad.net/bugs/1435905

Title:
  gnome-terminal randomly outputs control characters

Status in gnome-terminal package in Ubuntu:
  Confirmed
Status in terminator package in Ubuntu:
  Confirmed

Bug description:
  Observed behavior:
  When using tmux, the terminal occasionally displays the "boxed" version of the 0x001b character followed by two ']' characters either in the cursor's current location or at the end of a refreshed line, or sometimes at an apparently random position on the screen. The times at which this character appears seem to be completely random.

  To reproduce:
  Get a clean install of tmux and gnome-terminal from the repositories. It is difficult to quantify this, but it appears that the bug will present itself most readily when working in vim or another refresh-heavy cli program.

  Why it's not a tmux bug:
  The bug appears to affect gnome-terminal and terminator, but not xterm or e.g. sessions connected over putty. In fact, if I open all of these screens side-by-size (using a virtual machine), and simultaneously attach to the same tmux session, only gnome-terminal and terminator show the strange characters, while the other two terminals render the screen as expected.

  Please see this superuser discussion for a link to a video of what the bug looks like:
  http://superuser.com/questions/864364/tmux-printing-u0x001b-and-112-randomly

  Let me know if there is anything else I can do to help reproduce/solve
  this, as using xterm is a really bad workaround to have to put up
  with.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: gnome-terminal 3.6.2-0ubuntu1
  ProcVersionSignature: Ubuntu 3.13.0-43.72-generic 3.13.11.11
  Uname: Linux 3.13.0-43-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3.7
  Architecture: amd64
  Date: Tue Mar 24 10:30:12 2015
  InstallationDate: Installed on 2015-01-11 (71 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  ProcEnviron:
   LANGUAGE=en_US
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: gnome-terminal
  UpgradeStatus: No upgrade log present (probably fresh install)

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