Re: built-in regex matches wrong character

[Chet Ramey]

On 9/5/18 4:39 PM, Eric Blake wrote:

> Or, you can use bash's 'shopt -s globasciiranges' which is
> supposed to enable Rational Range Interpretation, where even in non-C
> locales, a character range bounded by two ASCII characters takes on the C
> locale definition of only the ASCII characters in that range, rather than
> the locale's definition of whatever other characters might also be
> equivalent (actually, while I know that shopt affects globbing, I don't
> know if it also affects regex matching - but if it doesn't, that's probably
> a bug that should be fixed).

Since bash uses the C library's regexp engine, and most C libraries don't
implement RRI, much less expose it as a flags option available via
regcomp(), there's no reason to expect that globasciiranges would have
any effect on regular expression matching.

Chet
-- 
``The lyf so short, the craft so long to lerne.'' - Chaucer
                 ``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, UTech, CWRU    chet@case.edu    http://tiswww.cwru.edu/~chet/