Matthew Barnett <pyt...@mrabarnett.plus.com> added the comment:

You're right about starting the second search from where the first finished. 
Caching the position would be an advantage there.
The memory cost of extra pointers wouldn't be so bad if UTF-8 took less space 
than the current format.

Regex isn't used as much as in Perl. BTW, the current re module was introduced 
in Python 1.5, the previous regex and regsub modules being removed in Python 
2.5.

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