Blank resolution causing problems

[Gervase Markham]

Vlad Dascalu wrote:
> We could have something like:
> 
> query.cgi?resolution_value=specified&resolution_name=FIXED
> 
> or
> 
> query.cgi?resolution_value=any
> 
> to solve a large part of these problems.

Unfortunately, this is a backwardly-incompatible change to the CGI 
interface of query.cgi, breaking stored queries (which we might be able 
to fix) and bookmarks and external scripts (which we can't). It also 
means that we'd need two parameters like this for any value for which 
"nothing" was an acceptable specific value, and that seems nasty to me.

I'd say a better solution was to have a reserved value which always 
meant "specifically none" for any field for which that's a legal value. 
It could be "---", "[None]" or anything else. I don't mind too much.

Gerv