> 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: .char \[*a] \S'16'\[*a]\S'0' (etc.) [note special anti-recursion feature of .char] but since the font metrics are not adapted this has some spacing issues. For the upcoming release I believe Deri has provided a real PFB font file containing the slanted font plus the corresponding font metrics file "SS" which will resolve these issues. (Discussion on this list from June 2023.)
