[issue14069] In extensions (?...) the lookbehind assertion cannot choose between the beginning of string and a letter

[Mark Lawrence]

Mark Lawrence added the comment:

@py.user please accept our apologies for having missed this.

@Ezio can you comment on this please.

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nosy: +BreamoreBoy

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue14069>
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