mclow.lists added a comment.

> ctype_base is defining graph by combining alnum and punct instead of using 
> the _IS* macro like the other bits.

Because that's how the standard (22.4.1) shows to do it :-)

> I'm not sure where it's getting the definition of classic_table. Presumably 
> it's coming from glibc ...


Exactly. The `classic_table` is there for C libraries (like Bionic) that don't 
have their one rune table.


http://reviews.llvm.org/D17132



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