I wrote:
> Heikki Linnakangas <hlinn...@iki.fi> writes:
>> +1 for back-patching. If I understand correctly, it would change the
>> behavior when you pass a string with non-ASCII leading or trailing
>> whitespace characters to those functions. I suppose that can happen, but
>> it's only pure luck if the current code happens to work in that case.
> Well, it'd work properly for e.g. no-break space in LATINn.
Actually, it's dubious that treating no-break space as whitespace is
correct at all in these use-cases. The core scanner would think it's
an identifier character, so it's not impossible that somebody would
consider it cute to write as part of a SQL identifier. If
the core scanner accepts that, so must these functions.
Hence, applied and back-patched.
regards, tom lane
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