Fix #6378. Start IDLE using the proper version of Python based on the directory
tree that idle.bat resides in.
Works with any/all versions of Python installed concurrently.
diff --git a/Lib/idlelib/idle.bat b/Lib/idlelib/idle.bat
index c1b5fd2..4e67868 100755
--- a/Lib/idlelib/idle.bat
+++ b/Lib/idlelib/idle.bat
@@ -1,3 +1,4 @@
@echo off
-rem Working IDLE bat for Windows - uses start instead of absolute pathname
-start idle.pyw %1 %2 %3 %4 %5 %6 %7 %8 %9
+rem Start IDLE using the appropriate Python interpreter
+set CURRDIR=%~dp0
+start %CURRDIR%..\..\pythonw.exe %CURRDIR%idle.pyw %1 %2 %3 %4 %5 %6 %7 %8 %9
diff --git a/Misc/NEWS b/Misc/NEWS
index f8dab00..b51a644 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -32,6 +32,9 @@
Library
-------
+- Issue #6378: idle.bat now runs with the appropriate Python version rather than
+ the system default. Patch by Sridhar Ratnakumar.
+
- Issue #10470: 'python -m unittest' will now run test discovery by default,
when no extra arguments have been provided.