On Thu, 4 Jun 2009, Hans Hagen wrote:

> Otared Kavian wrote:
>
>> %%%%% begin example
>> 
>> \starttext
>> Set $a := bc^{-1}$.
>> \stoptext
>> 
>> %%%%% end example
>> 
>> In this example, there should be a space before and after ":=" as one may 
>> see it readily in mkii (and indeed in plain TeX…).
>
> in char-def.lua both colon and equal should be 'relation'
>
> note for aditya: we need to check more of them (more colons)

colon needs a bit more care. The literal : should be a mathrel, while 
\colon should be a punctuation. I do not know how to set this using 
mathspec.

equal in the current char-def is wrong. The mathclass should be relation 
(rather than binary).

Aditya