[PATCH 0 of 3] keyword: more safeguards; no extra cmdline parsing

[Christian Ebert]

Hi,

I've regrouped/folded my latest submissions, 1 topic per patch.

1. cosmetic change to get rid of a pychecker warning
2. safeguards for global [keyword] filename patterns
   and against abort when pulling from bundle
3. avoid double cmdline parsing to obtain current hg command

Test updated accordingly.

c