erikw/tmux-powerline — pull request #22 by taka84u9 (2012-07-09 01:43:01+00:00)
Title: If corresponding env var exists, use it in config.sh

This pull request let user specify PROMPT and USE_PATCHED_FONT in his `.bashrc`.

## Why I need this?

I want to use tmux-powerline as submodule of my [dotfiles repository](https://github.com/taka84u9/dotfiles).
Since `status-(left|right).sh` use some environment variables defined in `config.sh`, user have to edit the file directly. This means that I have to modify the submodule, but, as you know, this kind of modification sometimes makes me hard to follow the origin repository.