Import this to replace open() by an extended version that uses

Internet Config to set creator/type based on the extension. Donated by
Oliver Steele.

diff --git a/Mac/Lib/icopen.py b/Mac/Lib/icopen.py
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+++ b/Mac/Lib/icopen.py
@@ -0,0 +1,66 @@
+"""icopen patch
+
+OVERVIEW
+
+icopen patches MacOS Python to use the Internet Config file mappings to select
+the type and creator for a file.
+
+Version 1 released to the public domain 3 November 1999
+by Oliver Steele (steele@cs.brandeis.edu).
+
+DETAILS
+
+This patch causes files created by Python's open(filename, 'w') command (and
+by functions and scripts that call it) to set the type and creator of the file
+to the type and creator associated with filename's extension (the
+portion of the filename after the last period), according to Internet Config.
+Thus, a script that creates a file foo.html will create one that opens in whatever
+browser you've set to handle *.html files, and so on.
+
+Python IDE uses its own algorithm to select the type and creator for saved
+editor windows, so this patch won't effect their types.
+
+As of System 8.6 at least, Internet Config is built into the system, and the
+file mappings are accessed from the Advanced pane of the Internet control
+panel.  User Mode (in the Edit menu) needs to be set to Advanced in order to
+access this pane.
+
+INSTALLATION
+
+Put this file in your Python path, and create a file named {Python}:sitecustomize.py
+that contains:
+       import icopen
+
+(If {Python}:sitecustomizer.py already exists, just add the 'import' line to it.)
+
+The next time you launch PythonInterpreter or Python IDE, the patch will take
+effect.
+"""
+
+import __builtin__
+
+_builtin_open = globals().get('_builtin_open', __builtin__.open)
+
+def _open_with_typer(*args):
+       file = apply(_builtin_open, args)
+       filename = args[0]
+       mode = 'r'
+       if args[1:]:
+               mode = args[1]
+       if mode[0] == 'w':
+               from ic import error, settypecreator
+               try:
+                       settypecreator(filename)
+               except error:
+                       pass
+       return file
+
+__builtin__.open = _open_with_typer
+
+"""
+open('test.py')
+_open_with_typer('test.py', 'w')
+_open_with_typer('test.txt', 'w')
+_open_with_typer('test.html', 'w')
+_open_with_typer('test.foo', 'w')
+"""
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