[Haskell-beginners] Data.Char: isAlpha vs. isLetter

[Joey Hess]

Brandon Allbery wrote:
> Probably an alias for backward compatibility; isAlpha is C-style <ctype.h>
> stuff, which was ASCII only, whereas isLetter is Unicode style.

Prelude Data.Char> all (\c -> isLetter c == isAlpha c) [minBound..maxBound]
True

Whew! You had me worried my code had unicode bugs.
isAlpha == isLetter

-- 
see shy jo
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