view tests/test-hg-parseurl.py.out @ 28787:ea86cdcd9b50

chg: use color in debug/error messages conditionally

Before this patch, chg always uses color in its debugmsg and abortmsg and
there is no way to turn it off.

This patch adds a global flag to control whether chg should use color or
not and only enables it when stderr is a tty and HGPLAIN is not set.

http://example.com/no/anchor, branches: (None, [])
http://example.com/an/anchor, branches: ('foo', [])
http://example.com/no/anchor/branches, branches: (None, ['foo'])
http://example.com/an/anchor/branches, branches: ('bar', ['foo'])
http://example.com/an/anchor/branches-None, branches: ('foo', [])
http://example.com/, branches: (None, [])
http://example.com/, branches: (None, [])
http://example.com/, branches: ('foo', [])