This is urxvt without tmux

no tmux

This is urxvt with tmux and utf8 not enabled in the config

tmux with utf8 enabled

This is urxvt with tmux and utf8 enabled in the config

tmux with utf8 not enabled

How can I make tmux act consistent with the initial result?

  • Where can I get that glyphs application to test the results? Jul 25, 2014 at 2:23
  • The glyphs script is from this: github.com/lucy/tewi-font/blob/master/glyphs I've actually stopped having this problem a long time ago, with no action on my part. I installed Windows 7 since posting as well.
    – Hal
    Jul 29, 2014 at 7:22

1 Answer 1


Would you please try the following and see if it helps?

  • rename .tmux.conf to something else
  • set LANG="en_US.UTF-8"


I have seen the existence of ~/.tmux.conf may cause problem so just for testing I suggested to rename the file. And forcing LANG=en_US.UTF-8 is another measure to ensure the correct locale to be used (since Hal didn't supply his LANG setting(s))

  • Can you make your instructions a little more explicit? Thanks.
    – fixer1234
    May 6, 2016 at 5:50
  • 1
    @fixer1234 : I'm not meaning to endorse this, but just to elaborate on the steps. Get to a command line (Bourne shell or mostly-compatible, like bash, ought to work fine; I expect urxvt ought to work fine). Type these lines into the command prompt: First line: mv ~/.tmux.conf ~/tmux.conf.bak Second line: set LANG="en_US.UTF-8" ; Third line: tmux ; Fourth line: glyphs
    – TOOGAM
    May 9, 2016 at 4:54

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