By removing the wrapping parens this function can be reused and the output more easily customized by the consumer.
For example, in my prompt, want to combine my RVM + Git info like:
machine-name: ~/path/here [ruby-1.9.2-p290@my_project | master]
However, the existing wrapping parenthesis force me to either roll my own, or strip the parens before outputting the info to the prompt.
remove wrapping parens, allowing easier reuse in the prompt
Looking around, I see that Pull Request #352 adds per-theme customization for the rvm_prompt_info, which is better than my hack. If that pull request (or at least that functionality) makes it in, I'll close this as a dup.