Some Perl operators are currently buggy. If a string consists of "à",

But for "a" and for "ā",

What's special about "à"? It's in the iso-8859-1 character set and outside of the ASCII character set. That's obviously not a reason for the current misbehaviour.

This can't be fixed for backwards compatibility reasons, so a pragma was added.

Unicode::Semantics::up (aka utf8::upgrade) is a hack that addresses the same issue. However, it only affects one string, the effect is fleeting, and it forces the use of a less efficient storage format.

The pragma fixes all broken operators, without the side effects. And it's fixed mostly automatically; all you need is use 5.012;.

In reply to Re: use feature 'unicode_strings' by ikegami
in thread use feature 'unicode_strings' by Anonymous Monk

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