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Author serhiy.storchaka
Recipients ammar2, boris, ezio.melotti, mrabarnett, serhiy.storchaka
Date 2019-11-01.08:43:52
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Python's regular expressions are not actually regular. Lookarounds and groups make things more complex. Even it it is possible to build an ambiguous graph, its size and the time of building can be too large for practical use. Dealing with unicode is only minor part of the problem.

I suggest you first to implement this feature as a third-party module on PyPI. After this we can consider including it in the stdlib.
Date User Action Args
2019-11-01 08:43:53serhiy.storchakasetrecipients: + serhiy.storchaka, ezio.melotti, mrabarnett, ammar2, boris
2019-11-01 08:43:53serhiy.storchakasetmessageid: <>
2019-11-01 08:43:53serhiy.storchakalinkissue38660 messages
2019-11-01 08:43:53serhiy.storchakacreate