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Re: [perl #122853] Guarantee 0-9, A-Z, a-z character classes

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Ed Avis
September 29, 2014 10:13
Re: [perl #122853] Guarantee 0-9, A-Z, a-z character classes
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Abigail <abigail <at>> writes:

>I've added a remark in perlrecharclass.pod. See commit

Thanks.  That adds

+The classes C<< [A-Z] >> and C<< [a-z] >> are special cased, in the sense
+they always match exactly the 26 upper/lower case letters, regardless
+of the platform (this only effects EBCDIC, which would otherwise include 
+some non-letters).

I would also add

    Digit sequences are and will be consecutive on all platforms Perl
    supports, so C<< [0-3] >> always matches the digits 0123, and so on.

just to cover all the bases.

Ed Avis <>

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