[issue12749] lib re cannot match non-BMP ranges (all versions, all builds)

[Ezio Melotti]

Ezio Melotti <ezio.melotti at gmail.com> added the comment:

I haven't looked at the code, but I think that the re module is just trying to calculate the range between the low surrogate of 𝒜 and the high surrogate of 𝒵.
If this is the case, this is the "usual bug" that narrow builds have.

Also note that re.search(u"[\N{MATHEMATICAL SCRIPT CAPITAL A}-\N{MATHEMATICAL SCRIPT CAPITAL Z}]".encode('utf-8'), u"\N{MATHEMATICAL SCRIPT CAPITAL C}".encode('utf-8'), re.UNICODE)
"works", but it returns a wrong result.

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<http://bugs.python.org/issue12749>
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