From dd8d824a560a27b00ff0dc111a0b1744d4418dda Mon Sep 17 00:00:00 2001
From: Amaury Forgeot d'Arc <amauryfa@gmail.com>
Date: Mon, 21 Apr 2008 22:35:30 +0000
Subject: [PATCH] Issue 2665: On Windows, sys.stderr does not contain a valid
 file when running without a console. It seems to work, but will fail at the
 first flush.

This causes IDLE to crash when too many warnings are printed.

Will backport.
---
 Lib/idlelib/NEWS.txt         |  8 ++++++++
 Lib/idlelib/configHandler.py | 20 ++++++++++++++++----
 2 files changed, 24 insertions(+), 4 deletions(-)

diff --git a/Lib/idlelib/NEWS.txt b/Lib/idlelib/NEWS.txt
index abfc0384a7f..7e2ce38b201 100644
--- a/Lib/idlelib/NEWS.txt
+++ b/Lib/idlelib/NEWS.txt
@@ -1,3 +1,11 @@
+What's New in IDLE 2.6a3?
+=========================
+
+*Release date: XX-XXX-2008*
+
+- Issue #2665: On Windows, an IDLE installation upgraded from an old version
+  would not start if a custom theme was defined.
+
 What's New in IDLE 2.6a1?
 =========================
 
diff --git a/Lib/idlelib/configHandler.py b/Lib/idlelib/configHandler.py
index 681ff1eedda..3fc2a606fe6 100644
--- a/Lib/idlelib/configHandler.py
+++ b/Lib/idlelib/configHandler.py
@@ -204,7 +204,10 @@ class IdleConf:
             if not os.path.exists(userDir):
                 warn = ('\n Warning: os.path.expanduser("~") points to\n '+
                         userDir+',\n but the path does not exist.\n')
-                sys.stderr.write(warn)
+                try:
+                    sys.stderr.write(warn)
+                except IOError:
+                    pass
                 userDir = '~'
         if userDir == "~": # still no path to home!
             # traditionally IDLE has defaulted to os.getcwd(), is this adequate?
@@ -247,7 +250,10 @@ class IdleConf:
                            ' from section %r.\n'
                            ' returning default value: %r\n' %
                            (option, section, default))
-                sys.stderr.write(warning)
+                try:
+                    sys.stderr.write(warning)
+                except IOError:
+                    pass
             return default
 
     def SetOption(self, configType, section, option, value):
@@ -356,7 +362,10 @@ class IdleConf:
                            '\n from theme %r.\n'
                            ' returning default value: %r\n' %
                            (element, themeName, theme[element]))
-                sys.stderr.write(warning)
+                try:
+                    sys.stderr.write(warning)
+                except IOError:
+                    pass
             colour=cfgParser.Get(themeName,element,default=theme[element])
             theme[element]=colour
         return theme
@@ -610,7 +619,10 @@ class IdleConf:
                                '\n from key set %r.\n'
                                ' returning default value: %r\n' %
                                (event, keySetName, keyBindings[event]))
-                    sys.stderr.write(warning)
+                    try:
+                        sys.stderr.write(warning)
+                    except IOError:
+                        pass
         return keyBindings
 
     def GetExtraHelpSourceList(self,configSet):