[issue13998] Lookbehind assertions go behind the start position for the match

[Matthew Barnett]

Matthew Barnett <python at mrabarnett.plus.com> added the comment:

The documentation says of the 'pos' parameter "This is not completely equivalent to slicing the string" and of the 'endpos' parameter "it will be as if the string is endpos characters long".

In other words, it starts searching at 'pos' but truncates at 'endpos'.

Yes, it's inconsistent, but it's documented.

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nosy: +mrabarnett

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<http://bugs.python.org/issue13998>
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