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John Cowan wrote:
> Jonathan Borden scripsit:
> > It all depends on what exactly you want, or intend the validator to do.
> > you are saying, in essense, is that an "English sentence" is not defined
> > a sequence of characters which conform to "text-en" and this is most
> The original point seems to have gotten lost.
Actually this _is_ the original point, isn't it? You are saying that using a
specific character set isn't a reliable way to detect a human language
(because other characters might be correctly present) and I am agreeing (but
because the _problem_ is way more complicated than character sets).
> The publisher's use case was for a datatype representing those letters,
> and only those letters, used in writing the Dutch language. Formally, of
> course, that's easy: it's an xsd:string type with a pattern facet
> consisting of "[ a-zA-Z...]+". The question is, just what are those
> other letters represented by the ellipsis in any given case?
> I used the examples of "fašade" and "co÷perate" and "na´ve" to
> illustrate that this problem may or may not have a clear-cut answer.
> are not foreign words; they are standard spellings (though not the only
> standard spellings) of standard English words.
> It's perfectly true that a sentence like "Al-Musa said, '<insert
> Arabic here>'." is also an English sentence even if the Arabic text
> is expressed in the Arabic script. But that isn't my point.
It's another good point however. What I am saying is that there are lots of
good reasons why what was suggested might not be reliable (either false
positives or false negatives).
> > Indeed to reliably detect an English sentence the 'recognizer' needs to
> > understand how to form words from characters and sentences from words.
> > is way outside the capabilities of the XML schema definition languages
> > have been discussing.
> Of course, of course. But even at the level of characters, there is
> a *definitional* (not implementation) problem in saying just what
> the character repertoire of <insert language here> is.
> Many have come up against this rock and crashed against it.