[texhax] query font size in document

[Martin Schröder]

2013/1/4 Uwe Lück <uwe.lueck at web.de>:
>> Is this a way to find the answer for the OP's question on "what is the
>> font size currently being used?" Actually, I am away from my TeXbook,
>> I believe there is some <m> such that \fontdimen<m>\font is the current
>> em size, which may be a good guess ...
>
> back at my TeXbook (p. 433): \fontdimen6\font is quad width, AFAIK same
> as "design size", see
>
>     http://en.wikipedia.org/wiki/Em_%28typography%29
>
> or "height of em-size" in
>
>     http://en.wikipedia.org/wiki/Typeface

Stop. :-)

Since we don't know what the OP actually wants, you are wasting efforts.

Best
   Martin