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Updated the patch as follows:

1) added optional line wrapping using a wrapcolumn argument 
to make_file and make_table methods.
2) eliminated a number of optional arguments to simplify API 
(as discussed).
3) made everything protected (by naming convention) except 
for the public make_table and make_file methods (as 
discussed).

NOTE1

I've attached the patch (you will also need the new file 
test_difflib_expect.html).   I've zipped the patched code as 
well as example side by side differences of the patch.  Diffs 
ending with _UPDATE.html show differences between the 
patched code and the last version of the patched code (what 
I've done since my last posting).  Diffs ending with 
_PATCH.html show differences between the patched code 
and what I obtained from CVS a month or so back:

python/python/dist/src/Lib/difflib.py -- rev 1.21
python/python/dist/src/Tools/scripts/diff.py -- rev 1.2
python/python/dist/src/Lib/test/test_difflib.py -- rev 1.10
python/python/dist/src/Doc/lib/libdifflib.tex -- rev 1.17

NOTE2

I will not be monitoring emails or this patch from Saturday 
Aug21 thru Wednesday Aug25.  When I break my internet 
silence I'll see if I've blundered this update (unlikely because I 
tested it pretty well but none the less possible).  If 
everything went well I will be soliciting Python-Dev to try to 
get this in alpha3.  I need someone with checkin privledges to 
do it.  Should I be trying to gather more support for its 
inclusion or does this only need to be done to convince 
someone with checkin privledges to apply the patch?