counter values as label names

[Daniel Schopper <daniel.schopper@aon.at>]

Dear list,
this seems a really basic question (and probably not even strictly 
ConTeXt-focused) - so please accept my apologies…

I'm trying to construct a macro which first creates two labels in the 
text (\start/stopline and \pagereference) with the value of a counter as 
the label name and then a footnote which prints the page and line 
numbers of those two. Supposedly because of my limited understanding of 
TeX's expansion mechanism I haven't been able to get things working with 
this code:

\setuplinenumbering[%
	location=inner,
	step=5,
         method=page,
         style=\tfxx,
         align=left,
         distance=1.5cm,
         width=0.3cm]
\setupfootnotes[
	location=text,
	numberconversion=empty,
	paragraph=yes,
	]
\definenumber[entrycounter]
\setnumber[entrycounter]{0}
\def\appentry#1#2{%
	\startline[line:\getnumber[entrycounter]]%
	\pagereference[page:\getnumber[entrycounter]]%
	#1%
	\stopline[line:\getnumber[entrycounter]]%
	\footnote{{\bf \at[page:\getnumber[entrycounter]]}%
	\inline[line:\getnumber[entrycounter]] #1] #2}%
	\incrementnumber[entrycounter]%
}

By now I tried to adapt a LaTeX-only-solution which Uwe Lueck suggested 
on the texhax-mailinglist some years ago (cf. 
http://tug.org/pipermail/texhax/2006-July/006599.html) but failed quite 
miserably.
I also tried the same with plain TeX registers (\newcount\entrycounter 
\entrycounter=0 etc.) instead of ConTeXt counters.
Could it be easier to stuff the \pagereference and \startline-commands 
into before= and after= of setupfootnotes?
Could anyone please give me a hint on this?

The purpose of this: I'm trying to use mkIV's page and linenumbering 
facilities for a critical apparatus (in this case endnotes with page and 
line references). As I didn't succeed with Hans Hagen's recent 
suggestion (cf. 
http://www.mail-archive.com/ntg-context@ntg.nl/msg49695.html) I tried 
this quick and dirty way. Although it's far away from being perfect (in 
an ideal world the endnotes should be grouped into one paragraph per 
page and of course there would be more then one apparatus and so on) 
this seems to be a first approach to me…

Cheers,
Daniel
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