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Date: Mon, 9 Mar 2015 13:18:38 +1100
Subject: Re: Newbie question about text encoding
From: Chris Angelico <rosuav@gmail.com>
Cc: "python-list@python.org" <python-list@python.org>
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Xref: csiph.com comp.lang.python:87169

On Mon, Mar 9, 2015 at 1:09 PM, Ben Finney <ben+python@benfinney.id.au> wrote:
> Steven D'Aprano <steve+comp.lang.python@pearwood.info> writes:
>
>> '\udd00' should be a SyntaxError.
>
> I find your argument convincing, that attempting to construct a Unicode
> string of a lone surrogate should be an error.
>
> Shouldn't the error type be a ValueError, though? The statement is not,
> to my mind, erroneous syntax.

For the string literal, I would say SyntaxError is more appropriate
than ValueError, as a string object has to be constructed at
compilation time.

I'd still like to see a report from someone who has used a language
that specifically disallows all surrogates in strings. Does it help?
Is it more hassle than it's worth? Are there weird edge cases that it
breaks?

ChrisA