register confusion

register confusion

[Michael Saunders]

Finding simple \at[] statements inadequate for glossaries (where there
might be zero, one, or several page references per entry), I'm
experimenting with registers, but I'm not getting the expected
results:

\defineregister[glind][glinds]
\setupregister[glind][style=\it]
\setupinteraction[state=start]

\starttext
double\glind[double]{}
\page
single\glind[single]{}
\page
double\glind[double]{}
\page

single should read, '2':  (p.\placeglind[single])

double should read, '1, 3':  (pp.\placeglind[double])

zero should be blank:  (\placeglind[zero])
\stoptext

Note the problems:

1. \placeglind[label] doesn't point to the label, it points to any label.
2. Context forces a linebreak before and after the numbers.
3. The numbers aren't italic.

Also, it would be nice to set 'p.', 'pp.', or nothing automatically,
depending on whether there was one, several or zero instances of the
label in the text.

Is register not the mechanism to do this?  If not, I don't know what is.
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