Ezio Melotti added the comment:
> What about _has_surrogates = re.compile('[^\udc80-\udcff]*\Z').match ?
The runtime is a bit slower than re.compile('[\udc80-\udcff]').search, but
otherwise it's faster than all the other alternatives. I haven't checked the
startup-time, but I suspect it won't be better -- maybe even worse.
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Added file: http://bugs.python.org/file27223/issue11454_surr1.py
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