[NTG-pdftex] erroneous fake spaces in letterspaced fonts

11 Oct 2024


      If a font is letterspaced by a sufficiently large amount, pdftex will
insert fake spaces between letters, which is obviously wrong:

\pdfcompresslevel0
\pdfinterwordspaceon
\letterspacefont\1\font 250
\1 AB
\bye

yields this:

Td [(A)]TJ/F52 9.9626 Tf( )Tj/F1 9.9626 Tf 9.962 0 Td [(B)]TJ

Bye,
--
  Robert