error detected at """ ch in unicode.C """ Library error?

[rumbu via Digitalmars-d-learn]

My opinion is to use the Tango's unicodedata.d module to obtain 
the unicode category, std.uni does not provide such functionality.

This module does not have any dependency, therefore you can just 
use it directly:

https://github.com/SiegeLord/Tango-D2/blob/d2port/tango/text/UnicodeData.d#L169