Hello all,

I upgraded some of my systems to Perl 5.10 and have fought for several hours with a change that boils down to: 

# Perl 5.8
perl -Mencoding=utf8 -le 'print ord chr 156'
156

# Perl 5.10
perl -Mencoding=utf8 -le 'print ord chr 156'
65533

[download]

I cannot easily remove the 'use encoding "utf8"' from my script as the pragma does "some magic" that prevents encoding-related disasters (double-encoded strings) further down the road.

This change means (I really hope someone will correct me) that I have to maintain my own copy of CGI::Util with "use bytes" inside "sub unescape". The offending statement is: 

      $todecode =~ s/%(?:([0-9a-fA-F]{2})|u([0-9a-fA-F]{4}))/
        defined($1)? chr hex($1) : utf8_chr(hex($2))/ge;

[download]

Does anybody know the reason behind this change? Would that be a bug or a bugfix?

Best regards,
 Grzegorz Nosek

In reply to "use encoding" behaviour change under Perl 5.10? by gnosek

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