From: Sebastian Redl (sebastian.redl_at_[hidden])
Date: 2006-07-05 17:10:15
Gennaro Prota wrote:
>What I was hinting at is that not all languages have
>"uppercase" and/or "lowercase". And in those that have there's no
>guarantee of one-to-one mapping, so that to_lower or to_upper aren't
>in general invertible functions, or even left-invertible functions.
Or even possible functions: to_upper applied to the single German
character ß ("sharp s") should yield "SS" ("SZ" a few decades ago) - an
impossibility for the current interface.
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