[pass] Removing Bash Dependency

[Jason A. Donenfeld]

On Tue, Sep 11, 2012 at 9:00 PM, Stephen Paul Weber
<singpolyma at singpolyma.net> wrote:
> FYI, if you ever decide you're ok with nixing the bash dependency (you
> really are barely using any of the advanced features of bash anyway), I'm
> willing to do the little bit of work it is to port again at that point, with
> whatever featured accrue between now and then :)

I'd consider this, I think, maybe. Some bashisms are kind of nice
though. Disown is nicer than making two sub-shells like in your
previous patch (does that even work?). And I kind of like [[ ]], but I
guess I could learn to live without it.