(a) "except E, V" -> "except E as V"
(b) V is now limited to a simple name (local variable)
(c) V is now deleted at the end of the except block

restores the 2.1 ability of Tools/scripts/ndiff.py to start producing
output before the entire comparison is complete.

David Goodger.

Guido told me to do this <wink>.
Greatly expanded docstrings, and fleshed out with examples.
New std test.
Added new get_close_matches() function for ESR.
Needs docs, but LaTeXification of the module docstring is all it needs.
\CVS: ----------------------------------------------------------------------

after implementing it I liked Gregor's two-"?" line idea a lot.

ndiff w/ a custom version I made for Guido during the pre-2.0 freeze.

I should have waited overnight <wink/sigh>.  Nothing wrong with the one I
sent, but I couldn't resist going on to add new -r1 / -r2 cmdline options
for recreating the original files from ndiff's output.  That's attached, if
you're game!  Us Windows guys don't usually have a sed sitting around
<wink>.

Attached is a cleaned-up version of ndiff (added useful module
docstring, now echo'ed in case of cmd line mistake); added -q option
to suppress initial file identification lines; + other minor cleanups,
& a slightly faster match engine.

the comments.

This is handy for comparing plain-text documentation files,
since it displays intra-line differences.