[NTG-context] How to obtain a Polish en-dash?

Hello, in Polish we usually use "--" as a dash (between different parts of a sequence, for instance), but we surround it by thin spaces (and the left one is "hard", like "~"). Is there a way in ConTeXt (MkIV) to obtain this behavior using some "tricky" syntax (like |--| or just -- surrounded by spaces) or is it better to define a custom command, like \def\Polishdash{\unskip\kern 0.2em--\hskip 0.2em\ignorespaces} (this is more or less taken from LaTeX's suite for Polish typesetting)? Best, -- Marcin Borkowski http://mbork.pl