the 'SS' (slanted symbol) font (was: Original print of V7 manual? / My own version of troff)

[G. Branden Robinson]

At 2024-01-10T14:23:24+0100, Tadziu Hoffmann wrote:
> > Note that there is no SS for 'devpdf'. So, from where does
> > -Tpdf find (or construct) the slanted versions of the Greek
> > letters if the standard symbol font has upright Greek letters?
> > Or are the two 'S' fonts different for -Tpdf and -Tps?
> 
> In the current groff release, the slanted Greek characters
> are constructed from the characters in the standard Symbol
> font using .char in pdf.tmac:

Not just the current groff release!  This approach goes back to 2011,
the very birth of gropdf(1).

https://git.savannah.gnu.org/cgit/groff.git/commit/?id=87046b294848179768c69bb01fbbadb86921e86e

Regards,
Branden

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