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I use powerlevel9k-theme to get a fancy zsh-prompt. But the fonts and glyphs I use to get my desired prompt, are not compatibel with the the terminal emulator I use to ssh into my workstation (JuiceSSH on Android).

I tried to let my .zshrc "detect" which emulator is in use. On my workstation I use gnome-terminal. So I wrote a simple function to check for the existence of a gnome-specific variable $VTE_VERSION:

## functions.zsh: Choose theme based on emulator
function choosetheme() {
 if [ -n "${VTE_VERSION+1}" ]
 then
     zgen load bhilburn/powerlevel9k powerlevel9k ## fancy theme
 else
     zgen oh-my-zsh themes/avit ## basic theme for Android use
 fi
}

And then in my .zshrc:

source functions.zsh
choosetheme

But the result is that powerlevel9k prompt is shown regardless which emulator.

Any ideas how to accomplish this task of having different prompts/themes on different emulators? Or maybe I have overlooked something?

  • Does 'choosetheme` work if you run it interactivly? – icarus Aug 4 '17 at 22:18
  • What's the +1 after ${VTE_VERSION for? – thrig Aug 4 '17 at 23:11
  • @icarus Same result when run interactively. The powerlevel9k prompt is always shown. @thrig I'm actually not quite sure what +1 does. – Tobe Aug 5 '17 at 6:53
  • When I test the function by means of this: if [ -n "${VTE_VERSION+1}" ]; then echo Fancy theme; else echo Basic theme; fi, it correctly prints the echo based on which emulator I use. I think I have to have a closer look at powerlevel9k in combination with zgen framework. I suspect it's not an ordinary theme which can be changed interactively. – Tobe Aug 5 '17 at 6:58
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The command

ps -p$PPID | awk '{print $4}'

will return two lines, with the second line being exactly whichever terminal emulator you are using. Hope I helped =)

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