How do I display RVM's current Ruby and gemset in the Terminal prompt?

I'm using rvm-prompt. It seems the interpreter, the version, the patchlevel, and the gemset should all displayed by default.

If I call the prompt, it accurately returns the current ruby and gemset:

$ rvm-prompt

But my gemset isn't reflected in my prompt:

ruby-1.8.7-p302 MacBook:~ subpixel$ 

I tried calling the gemset explicitly in .bash_profile with:

PS1="\$(~/.rvm/bin/rvm-prompt i v p g) $PS1"

but it doesn't change the prompt.


If you look at the documentation for rvm-prompt, at the bottom of the page you'll find the following:


Recently there has been a pair programming session that turned out a useful bit of prompt setting code. It now resides in contrib/ so you can require it in your profiles as follows after sourcing RVM itself.

source "$rvm_path/contrib/ps1_functions"

Immediately after that you can customize your prompt by adding the following line


There is an article and screen cast associated with this in the community resources section.

I copied the ps1_functions file, changed it to suit my needs and source that in my .bash_profile. Then I just have a line that calls


Now my prompt changes when I change gemsets

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