Comment 61 for bug 744812

Truetype/Opentype files have various sets of metadata, not all of which can be directly queried/matched via FontConfig.

In particular, both the OpenStep and CSS font-matching schemes require the "PostScript name" as the canonical form of first attempt:

  http://www.w3.org/TR/css3-fonts/#ltfont-face-namegt
  "the unique name used with local() specifies a single font, not an entire font family. Defined in terms of OpenType font data, the Postscript name is found in the font's name table, in the name record with nameID = 6 (see [OPENTYPE] for more details). The Postscript name is the commonly used key for all fonts on OSX and for Postscript CFF fonts under Windows. The full font name (nameID = 4) is used as a unique key for fonts with TrueType glyphs on Windows."

Previously patch(es) were offered by Isaiah Beerbower and Evgeniy Stepanov:

  http://lists.freedesktop.org/archives/fontconfig/2008-June/thread.html#2957
  http://lists.freedesktop.org/archives/fontconfig/attachments/20080605/c063ded6/attachment.diff

but these do not appear to have been replied. A request is made during the conversation to file a bug and attach the files.