Either it didn't exist at the time, or I didn't know about the diff.py that
Thomas Heller mentioned in another response, so I wrote 'pyunidiff'
http://unpy.net/~jepler/pyunidiff.py
ah, I guess unix 'diff'-style output was added to difflib.py in 2003, whilemy
pyunidiff dates to 2002.
Jeff
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