On 18/11/2011, Pontus Lurcock <pont@talvi.net> wrote:

>>> Degrees, minutes and seconds of arc (also degrees Celsius) are an
>>> exception and are not supposed to have any space between the 
>>> digits and the degree symbol [1], so to be correct, I think 
>>> Context should by default veto any space between digits and 
>>> numbers, in these cases only.
>> 
>> Correction, I should have written "(but not degrees Celsius)",
>> apologies.
> 
> Conventions for setting the degrees of temperature symbol vary; see
> http://en.wikipedia.org/wiki/Degree_symbol#Typography and references
> therein. In most professionally published works that I've seen, there
> is no space between the number and the °, or between the ° and the C.

Pont, 

I agree they vary, and no space before the °C is quite common (and frequently my own practice too). However in setting default behaviour for Context I am inclined to favour conforming to international standards, where they exist (but a \setupunits override it probably called for).

Robin