I don't think that pdftex replaces glyphs. That would require that pdftex understands CFF. I assume that pdftex first determines whether a font with the same name exists within the TEXMF tree. If true, it drops the embedded font and creates a common subset of the glyphs used in the embedded file and the main document. But the actual glyphs come from the font found in the TEXMF tree. replacing/merging glyphs is tricky ... i remember seeing bugged
On 12/19/2017 12:56 AM, Reinhard Kotucha wrote: presentations due to this fact (irr very old pdftex was able to do such things) for instance because lucida fonts were merged where the names were the same but the glyphs actually not (it all depends on where the embedded files come from) .. so, a merge would also involve checkign if the font programs (subrs for glyphs etc) are the same Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------