[Flex-help] Character classes e.g., [:alpha:]

[John P. H. <jph...@gm...>]

The manual states:

"These expressions all designate a set of characters equivalent to the
corresponding standard C isXXX function."

and

"For example, the following character classes are all equivalent:

         [[:alnum:]]
         [[:alpha:][:digit:]]
         [[:alpha:][0-9]]
         [a-zA-Z0-9]
"

This is clearly true in the C locale, but does this also hold for other
locales, e.g., French?  If not, is it the locale at compile time or the
one at run time that applies?

I ask because isXXX does depend on the locale, so either way it looks
like the manual needs correction, perhaps by adding "in the C locale" to
the first sentence.

Or am I totally off my rocker?