Re: failure on [a-z] regex at gawk

[Stepan Kasal]

Hello,

the problem is with locales:
In UTF-8 locales, the ordering is aAbB...zZ.  So the range a-z includes
all letters but capital Z.

Observe:
$ LC_ALL=en_GB.utf-8 gawk 'BEGIN{print gensub(/[a-z]+/, "X", "g", "aZalZz")}'
XZXZX

To fix the issue, add

LC_ALL=C; export LC_ALL

near the top of each shell script which uses awk.

HTH,
        Stepan