[pdftex] writet1: font subsetting question

[Vladimir Volovich]

Hi,

i've been reported that PDF files generated with pdftex using cm-super
fonts are bigger than the ones generated via dvips+distiller.

could this be the result of preserving all Subrs entries in the
embedded fonts?

cm-super fonts have big number of Subrs entries, and if pdfTeX
downloads the font partially into a PDF file, does it reduce unused
Subrs entries (in addition to unused CharStrings entries)?

to remove unused Subrs entries, the writet1 module must analyse all
glyph and subrs charstrings, find out the used (possibly recursively)
Subrs entries, then reorder the Subrs (to avoid gaps), and store the
new glyph charstrings with changed references to subrs.

does pdftex do this for partial font downloading?

Best,
v.