Re: Case insensitivity seems to ignore lower bound of interval

[Eric Bischoff]

Le jeudi 28 avril 2011 12:00:33, vous avez écrit :
> You seem to think this is gawk-specific, but in fact any locale-aware tool
> that uses regular expressions behaves the same (try eg with sed or grep).

Not here:

$ echo 'ijklmnopqrstuvwxyz'| sed 's/[r-z]/X/g'
ijklmnopqXXXXXXXXX
$ echo 'ijklmnopqrstuvwxyz'| sed 's/[R-Z]/X/g'
ijklmnopqrstuvwxyz

$ echo 'ijklmnopqrstuvwxyz'| awk '{gsub("[r-z]", "X"); print}'
ijklmnopqXXXXXXXXX
$ echo 'ijklmnopqrstuvwxyz'| awk '{gsub("[R-Z]", "X"); print}'
ijklmnopqrXXXXXXXX

$ echo 'ijklmnopqr'| grep "[r-z]"
ijklmnopqr
$ echo 'ijklmnopqr'| grep "[R-Z]"

$ awk --version | head -n 1
GNU Awk 3.1.7
$ sed --version | head -n 1
GNU sed version 4.2.1
$ grep --version | head -n 1
GNU grep 2.6.3

Those results were predictable for sed and grep, not for awk. Furthermore, 
they are inconsistent between awk and sed.

-- 
Éric Bischoff - Bureau Cornavin
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