Bugs item #809, was opened at 2007-06-20 09:51 You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=809&group_id=106 Category: None Group: None Status: Open Resolution: None Priority: 5 Submitted By: Till Tantau (tantau) Assigned to: Nobody (None) Summary: Incorrect FontFlags for Symbol font (34 instead of 4) Initial Comment: Hi! with version 1.40.3 of pdftex I have the following problem: When the standard PDF-Font "Symbol" is used in the pdf-file, then the /Flags entry of the FontDescriptor is set to 34 rather than to 4. This is incorrect and causes the resulting files to be displayed incorrectly by the Acrobat Reader. To reproduce the problem, I use the following LaTeX-code: \documentclass{article} \pdfcompresslevel0 \font\myfont=psyr\relax \begin{document} \pagestyle{empty} \myfont SG \end{document} My pdftex.map is standard and contains the following line: psyr Symbol According to the pdftex manual, this should cause the /Flags entry of the font in the PDF-file to be set to 4 (which would be correct and which would be the Flags value of a Symbol font). However, on my system the resulting pdf file (which I attach) contains a /Flags entry of 34 (which is incorrect here and which is the Flags value of a serif standard font). I hope this report is reasonably clear... Any help on this would be greatly appreciated, Till Tantau ----------------------------------------------------------------------
Comment By: Till Tantau (tantau) Date: 2007-06-20 12:24
Message: Logged In: YES user_id=4566 Hi yet again, I now had a look at the code, namely at teh function write_fontdescriptor in writefont.c. Now, in that file it says if (!fd->ff_found && fd->fm->fd_flags == 4) pdf_puts("/Flags 34\n"); /* assumes a roman sans serif font */ else pdf_printf("/Flags %i\n", (int) fd->fm->fd_flags); which obviously causes the problems. Now, it is not quite clear to me how to solve this. In older versions of pdftex (1.30) the built-in fonts did not their own FontDescription object, so this problem did not arise. However, in pdftex 1.40 they do for some reason (it says in create_fontdictionary: /* builtin fonts still need the /Widths array and /FontDescriptor * (to avoid error 'font FOO contains bad /BBox') */ I could not track this "contains bad /BBox" problem. According to the PDF- Specification, a builtin font does not need a FontDescriptor. Be that as it may, I think the the Flags entries of the buildin fonts should be correct (actually, they have to be correct, Acrobat does not render them otherwise). This means, at the very least, that write_fontdescriptor should treat Symbol and ZapfDingbats specially (namely setting the Flags to 4). However, the Flags should also be set correctly for, say, Helvetica, which is not a serif font and for Courier, which is monospaced and so on. Best regards, Till ---------------------------------------------------------------------- Comment By: Till Tantau (tantau) Date: 2007-06-20 10:00 Message: Logged In: YES user_id=4566 Hello again, I toyed around with this some more. It turns out that if I change the line in the pdftex.map file to psyr Symbol 6 then the /Flags field in the resulting .pdf file is set to 6 (which is "not quite correct", but then the text is rendered correctly, at least). Now, trying other values than 6, it seems that pdftex specifically replaces exactly the number 4 by 34, all other values are left as they are. I presume this was done at some time for some other font that is not a symbol font and whose font flags were missing/incorrect. However, this behaviour is a bit problematic for the Symbol font. Best regards, Till ---------------------------------------------------------------------- You can respond by visiting: http://sarovar.org/tracker/?func=detail&atid=493&aid=809&group_id=106