Package: texlive-fonts-extra Version: 2022.20221123-2 Severity: normal
This is a question, which came up, when working on #1026460. Things are worse: file(1) /does/ have magic for "TeX virtual font data" but is *that* weak (only 16 bit, 0xf7 0xca at the start of file) it gets beaten by the pattern for the dreaded MS-DOS executables (which is plain nightmare). After some searching I found the parser for virtual font files in texk/dvipsk/virtualfont.c starting at line 189. So I could harden the magic at least a little bit by exploiting the command byte (243, 0xf3) at offset 0xb the earliest. Since I had to download the huge texlive-fonts-extra .deb to extract the reproducer, this at least also brought more than 20k samples to verify the result. Some .vf files fail the test, and I'd like to ask you whether they are technically correct: # From the texlive-bin sources (bullseye) * texk/web2c/tests/badvpl.vpl (I assume that's not a bug) # From texlive-fonts-extra_2022.20221123-2_all.deb: * /usr/share/texlive/texmf-dist/fonts/vf/public/mathdesign/mdbch/mdbchbofc8t.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/mathdesign/mdbch/mdbchrofc8t.vf They look fairly broken (error messages inside), perhaps they shouldn't be there anyway? * /usr/share/texlive/texmf-dist/fonts/vf/public/ebgaramond/EBGaramondInitials-tlf-ts1.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/gfsbodoni/gbodonio9a.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/hfoldsty/hfoit0600.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/hfoldsty/hfoit0700.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/hfoldsty/hfost0600.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/hfoldsty/hfost0700.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/hfoldsty/hfotc0600.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/hfoldsty/hfotc0700.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/hfoldsty/hfott0600.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/hfoldsty/hfott0700.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/hfoldsty/hfovi0600.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/hfoldsty/hfovi0700.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/hfoldsty/hfovt0600.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/hfoldsty/hfovt0700.vf * /usr/share/texlive/texmf-dist/fonts/vf/public/libertinus-type1/LibertinusSerifInitials-Regular-tlf-ts1.vf These are pretty small (88 octets at most, usually just 12) so still not having them detected properly might not be the biggest loss. Are these files technically OK? Hilmar -- sigfault