1 files changed, 51 insertions, 22 deletions

diff --git a/color.py b/color.py
index 7970198a..0218aab8 100644
--- a/color.py
+++ b/color.py
@@ -18,41 +18,43 @@ import sys
 
 import pager
 
-COLORS = {None     :-1,
-          'normal' :-1,
-          'black'  : 0,
-          'red'    : 1,
-          'green'  : 2,
-          'yellow' : 3,
-          'blue'   : 4,
+COLORS = {None: -1,
+          'normal': -1,
+          'black': 0,
+          'red': 1,
+          'green': 2,
+          'yellow': 3,
+          'blue': 4,
           'magenta': 5,
-          'cyan'   : 6,
-          'white'  : 7}
-
-ATTRS = {None     :-1,
-         'bold'   : 1,
-         'dim'    : 2,
-         'ul'     : 4,
-         'blink'  : 5,
+          'cyan': 6,
+          'white': 7}
+
+ATTRS = {None: -1,
+         'bold': 1,
+         'dim': 2,
+         'ul': 4,
+         'blink': 5,
          'reverse': 7}
 
-RESET = "\033[m"  # pylint: disable=W1401
-                  # backslash is not anomalous
+RESET = "\033[m"
+
 
 def is_color(s):
   return s in COLORS
 
+
 def is_attr(s):
   return s in ATTRS
 
-def _Color(fg = None, bg = None, attr = None):
+
+def _Color(fg=None, bg=None, attr=None):
   fg = COLORS[fg]
   bg = COLORS[bg]
   attr = ATTRS[attr]
 
   if attr >= 0 or fg >= 0 or bg >= 0:
     need_sep = False
-    code = "\033["  #pylint: disable=W1401
+    code = "\033["
 
     if attr >= 0:
       code += chr(ord('0') + attr)
@@ -71,7 +73,6 @@ def _Color(fg = None, bg = None, attr = None):
     if bg >= 0:
       if need_sep:
         code += ';'
-      need_sep = True
 
       if bg < 8:
         code += '4%c' % (ord('0') + bg)
@@ -82,6 +83,27 @@ def _Color(fg = None, bg = None, attr = None):
     code = ''
   return code
 
+DEFAULT = None
+
+
+def SetDefaultColoring(state):
+  """Set coloring behavior to |state|.
+
+  This is useful for overriding config options via the command line.
+  """
+  if state is None:
+    # Leave it alone -- return quick!
+    return
+
+  global DEFAULT
+  state = state.lower()
+  if state in ('auto',):
+    DEFAULT = state
+  elif state in ('always', 'yes', 'true', True):
+    DEFAULT = 'always'
+  elif state in ('never', 'no', 'false', False):
+    DEFAULT = 'never'
+
 
 class Coloring(object):
   def __init__(self, config, section_type):
@@ -89,9 +111,11 @@ class Coloring(object):
     self._config = config
     self._out = sys.stdout
 
-    on = self._config.GetString(self._section)
+    on = DEFAULT
     if on is None:
-      on = self._config.GetString('color.ui')
+      on = self._config.GetString(self._section)
+      if on is None:
+        on = self._config.GetString('color.ui')
 
     if on == 'auto':
       if pager.active or os.isatty(1):
@@ -122,6 +146,7 @@ class Coloring(object):
   def printer(self, opt=None, fg=None, bg=None, attr=None):
     s = self
     c = self.colorer(opt, fg, bg, attr)
+
     def f(fmt, *args):
       s._out.write(c(fmt, *args))
     return f
@@ -129,6 +154,7 @@ class Coloring(object):
   def nofmt_printer(self, opt=None, fg=None, bg=None, attr=None):
     s = self
     c = self.nofmt_colorer(opt, fg, bg, attr)
+
     def f(fmt):
       s._out.write(c(fmt))
     return f
@@ -136,11 +162,13 @@ class Coloring(object):
   def colorer(self, opt=None, fg=None, bg=None, attr=None):
     if self._on:
       c = self._parse(opt, fg, bg, attr)
+
       def f(fmt, *args):
         output = fmt % args
         return ''.join([c, output, RESET])
       return f
     else:
+
       def f(fmt, *args):
         return fmt % args
       return f
@@ -148,6 +176,7 @@ class Coloring(object):
   def nofmt_colorer(self, opt=None, fg=None, bg=None, attr=None):
     if self._on:
       c = self._parse(opt, fg, bg, attr)
+
       def f(fmt):
         return ''.join([c, fmt, RESET])
       return f