[luatex] pdf.getfontname()

[Andreas Matthias]

I am somewhat confused about the function

   pdf.getfontname()

It seems to me that this function gets one argument which is the font
number and
then returns exactly this number.

This is because a font with font number 36 gets the pdf resource name /F36.
And pdf.getfontname() returns just the number of /F36.

Is my understanding correct?
Is it at all possible that the argument and the return value of
pdf.getfontname() are
not the same?

Cheers
Andreas
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