References with identical node and online label names

[Didier Verna]

  Hello,

I would like to have reference commands to issue a short form (with just
the node name) for info, and a more elaborate one for other formats.

Duplicating the node name, as in @ref{node name, node name, printed-label}
does not notice the duplication, so it just prints it twice:

* note node name: node name.

So I suppose I have no choice but to conditionalize on the output
format and issue two different @ref calls. But wouldn't it make sense to
notice when the node name is identical to the online label, and just
fall back to the one-argument form output: * note node name::. ?

Thanks!

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