Sam Mason <s...@samason.me.uk> writes:
> I'd never heard of UTF-16 surrogate pairs before this discussion and
> hence didn't realise that it's valid to have a surrogate pair in place
> of a single code point. The docs say that <D800 DF02> corresponds to
> U+10302, Python would appear to follow my intuitions in that:
> ord(u'\uD800\uDF02')
> results in an error instead of giving back 66306, as I'd expect. Is
> this a bug in Python, my understanding, or something else?
I might be wrong, but I think surrogate pairs are expressly forbidden in
all representations other than UTF16/UCS2. We definitely forbid them
when validating UTF-8 strings --- that's per an RFC recommendation.
It sounds like Python is doing the same.
regards, tom lane
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