cset 050fa240db9c breaks extension functionality

[Christian Ebert]

Hi,

A quick test of recent crew cset 050fa240db9c reveals the
following:

$ hg help mq
** unknown exception encountered, details follow
** report bug details to http://www.selenic.com/mercurial/bts
** or mercurial at selenic.com
** Mercurial Distributed SCM (version 050fa240db9c)
Traceback (most recent call last):
  File "/usr/local/bin/hg", line 11, in <module>
    mercurial.commands.run()
  File "/usr/local/lib/python2.5/site-packages/mercurial/commands.py", line 3006, in run
    sys.exit(cmdutil.runcatch(u, sys.argv[1:]))
  File "/usr/local/lib/python2.5/site-packages/mercurial/cmdutil.py", line 37, in runcatch
    return dispatch(ui, args)
  File "/usr/local/lib/python2.5/site-packages/mercurial/cmdutil.py", line 323, in dispatch
    return runcommand(ui, options, d)
  File "/usr/local/lib/python2.5/site-packages/mercurial/cmdutil.py", line 362, in runcommand
    return cmdfunc()
  File "/usr/local/lib/python2.5/site-packages/mercurial/cmdutil.py", line 321, in <lambda>
    d = lambda: func(ui, *args, **cmdoptions)
  File "/usr/local/lib/python2.5/site-packages/mercurial/commands.py", line 1363, in help_
    f(name)
  File "/usr/local/lib/python2.5/site-packages/mercurial/commands.py", line 1338, in helpext
    mod = extensions.find(name)
  File "/usr/local/lib/python2.5/site-packages/mercurial/extensions.py", line 20, in find
    return sys.modules[v]
NameError: global name 'sys' is not defined

Or, with Brendan's extdiff example with colordiff:

$ hg cdiff
** unknown exception encountered, details follow
** report bug details to http://www.selenic.com/mercurial/bts
** or mercurial at selenic.com
** Mercurial Distributed SCM (version 050fa240db9c)
Traceback (most recent call last):
  File "/usr/local/bin/hg", line 11, in <module>
    mercurial.commands.run()
  File "/usr/local/lib/python2.5/site-packages/mercurial/commands.py", line 3006, in run
    sys.exit(cmdutil.runcatch(u, sys.argv[1:]))
  File "/usr/local/lib/python2.5/site-packages/mercurial/cmdutil.py", line 37, in runcatch
    return dispatch(ui, args)
  File "/usr/local/lib/python2.5/site-packages/mercurial/cmdutil.py", line 279, in dispatch
    cmd, func, args, options, cmdoptions = parse(ui, args)
  File "/usr/local/lib/python2.5/site-packages/mercurial/cmdutil.py", line 213, in parse
    args = shlex.split(defaults) + args
NameError: global name 'shlex' is not defined

c
-- 
keyword extension for Mercurial (http://selenic.com/mercurial):
<http://www.blacktrash.org/hg/hgkeyword/>
Mercurial crew development repository + keyword extension:
<http://www.blacktrash.org/hg/hg-crew-keyword/>