If someone really wants 'abc'.replace('', '-') to return '-a-b-c-',
please submit patches for both 8-bit and Unicode strings to
SourceForge and assign to me. I looked into this and it's
non-trivial: the implementation used for 8-bit strings goes into an
infinite loop when the pattern is empty, and the Unicode
implementation tacks '----' onto the end. Please supply doc and
unittest patches too. At least re does the right thing already:
>>> import re
>>> re.sub('', '-', 'abc')
'-a-b-c-'
>>>
--Guido van Rossum (home page: http://www.python.org/~guido/)
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