color: use ui.formatted() to test TTYness, not sys.stdout.isatty()
This fixes the color extension not working with pager (broken in
877390020477). The pager extension already sets ui.formatted=True to
allow this use case.
from mercurial import demandimport
demandimport.enable()
import re
rsub = re.sub
def f(obj):
l = repr(obj)
l = rsub("0x[0-9a-fA-F]+", "0x?", l)
l = rsub("from '.*'", "from '?'", l)
l = rsub("'<[a-z]*>'", "'<whatever>'", l)
return l
import os
print "os =", f(os)
print "os.system =", f(os.system)
print "os =", f(os)
from mercurial import util
print "util =", f(util)
print "util.system =", f(util.system)
print "util =", f(util)
print "util.system =", f(util.system)
import re as fred
print "fred =", f(fred)
import sys as re
print "re =", f(re)
print "fred =", f(fred)
print "fred.sub =", f(fred.sub)
print "fred =", f(fred)
print "re =", f(re)
print "re.stderr =", f(re.stderr)
print "re =", f(re)