page number with brief centered line above

[jbf <roma83537@gmail.com>]

Hi list,

I am trying to achieve a layout where there is a brief line above the 
bottom-centered page number (of a double-sided document). I am able to 
achieve the centered bottom-located page number easily and obviously 
enough with:

\setuppagenumbering
   [alternative=doublesided,location={footer,middle}]
\setupfooter
   [style=bold]

And I was able to achieve a result with a short line above where the 
page number should be - but by adopting the solution below I have now 
lost the page number.

\setuppagenumbering
   [alternative=doublesided,location={footer,middle}]
\setupfootertexts[{\framed[frame=off,topframe=on,width=.5\textwidth]}]

So then I thought that having left out any reference to page numbers I 
had better put it in, so I added [pagenumber] to the above, but I ended 
up with two page numbers, one centered, the other to the inner or outer 
margins (depending on recto/verso), and the line was likewise to the 
right or left of the centred number. So clearly not what I want.

Maybe the solution lies with some combination of the above I haven't 
thought of, or maybe there is another solution altogether. Any thoughts?

Julian

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