[Python-Dev] subprocess shell=True on Windows doesn't escape ^ character

[anatoly techtonik]

I am banned from tracker, so I post the bug here:

Normal Windows behavior:

  >hg status --rev ".^1"
  M mercurial\commands.py
  ? pysptest.py

  >hg status --rev .^1
  abort: unknown revision '.1'!

So, ^ is an escape character. See
http://www.tomshardware.co.uk/forum/35565-45-when-special-command-line


But subprocess doesn't escape it, making cross-platform command fail on
Windows.

---[cut pysptest.py]--
import subprocess as sp

# this fails with
# abort: unknown revision '.1'!
cmd = ['hg', 'status', '--rev', '.^1']
# this works
#cmd = 'hg status --rev ".^1"'
# this works too
#cmd = ['hg', 'status', '--rev', '.^^1']

try:
  print sp.check_output(cmd, stderr=sp.STDOUT, shell=True)
except Exception as e:
  print e.output
------------------------------

-- 
anatoly t.
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