> One ting I'm wondering about: not all of the fonts I use always have > all those ligatures. From what I understand from you, can't check > right now, glyphs will be replaced usgin the mapping regardless of > glyph availability, which would lead to missing glyphs in the docuemnt > if not available. This is correct. I actually ran into a different problem with Cronos Pro: the wrong glyph was at the code point (this is the case even if you use the font's own OT table!)
> Would it therefore make more sense to put these mappings in a separate > file and load that mapping as well when required? Can multiple > mappings be loaded? Not at the same time for the same font, that I know of. The problem is that teckit mappings were designed to handle legacy (non-Unicode) fonts, which do not have OT tables to produce the proper glyph combinations when given complex input (such as Arabic or Indic script). Thus, when a font has its own OT tables, things don't necessarily work as one might expect. In the case that a font has OT features, these are only applied AFTER the teckit mapping is applied, so there's no way for the teckit engine to anticipate which ligatures a font may have. Nor do I know of a way for XeTeX to discern which ligatures a font may have (aside from doing a "if glyph exists at U+FB01" check for each possible ligature glyph, which wouldn't catch Junicode's rare/historical ligatures (although this might be useful for fonts with the regular repertoire of ligatures)). > Can't try this out for a while and guess I'm not the only one who > thinks of this, so just posting the question to list. This is definitely something that's been on my mind for a while as well, I would be very interested in seeing other people's thoughts on the matter. Side note: Calibri has numerous default ligatures aside from the f/ff-type. If anyone is interested in a teckit mapping for that font, I'll upload it when I find it. I'll make one for Junicode if someone can provide me with a list of the ligatures it has. -Andy Lin -------------------------------------------------- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex
