I recently stumbled over a bug in the pexpect module shipped with
Sage. It turns out that specifying the full path to a command doesn't
work; you get an UnboundLocalError exception. I've created a ticket
with an example:

    http://trac.sagemath.org/sage_trac/ticket/8471

The question is, do we patch pexpect, or do we upgrade to the newest
version (we're shipping version 2.0 while the latest version is 2.3)?
I imagine that there could be some good reasons for not upgrading, so
the real question here is whether there are any objections to
upgrading.

Franco

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