# HG changeset patch
# User Steve Borho <steve@borho.org>
# Date 2010-08-28 03:24:47
# Node ID a8b1cb0b0ddb63d32294d4e0edb464c7006275c7
# Parent  6449be7b8a3b96f06e7376f983035efcb189c30e

color: handle more Windows console errors

If your application is being built as a non-console application,
stdout is not a valid handle and raises an exception:

pywintypes.error: (6, 'DuplicateHandle', 'The handle is invalid.')

Alternatively, non-console applications launched outside of a
console will return None from GetStdHandle instead of raising an
exception.

diff --git a/hgext/color.py b/hgext/color.py
--- a/hgext/color.py
+++ b/hgext/color.py
@@ -254,8 +254,10 @@ try:
         'inverse': win32c.COMMON_LVB_REVERSE_VIDEO, # double-byte charsets only
     }
 
-    stdout = win32c.GetStdHandle(win32c.STD_OUTPUT_HANDLE)
     try:
+        stdout = win32c.GetStdHandle(win32c.STD_OUTPUT_HANDLE)
+        if stdout is None:
+            raise ImportError()
         origattr = stdout.GetConsoleScreenBufferInfo()['Attributes']
     except pywintypes.error:
         # stdout may be defined but not support