nojhan/liquidprompt — pull request #35 by dolmen (2012-08-14 10:13:29+00:00)
Title: Fix shell detection

Faster detection based only on BASH_VERSION/ZSH_VERSION variables.
Fixes shell detection (sub shell detection broken in 7e8fc0e).
Should better fail when started with an other shell than bash/zsh.

So do not apply the revert proposed in #33.