On Sat, Oct 12, 2013 at 02:19:16AM +0200, Hans Hagen wrote: > On 10/12/2013 2:15 AM, Philipp Gesang wrote: > >···<date: 2013-10-12, Saturday>···<from: Hans Hagen>··· > > > >>On 10/12/2013 12:48 AM, Thangalin wrote: > >>>Hi > >>> > >>>>(Copperplate is going to be added soon.) Unfortunately, Context > >>> > >>>Keep in mind it was only Copperplate 33 BC. Also note that I could not > >>>find any version of Copperplate 33 BC online that had the same file > >>>size as my corrupt version. (I was trying to find the source of the > >>>corrupt copy.) > >>> > >>>Most other copies, I'd imagine, are fine, so don't be too quick to > >>>blacklist it. > >> > >>indeed, and when you don't notice that it's blacklisted, it can happen > >>that this one instance gets unnoticed > >> > >>>>does not yet have blacklisting functionality (it’s marked as todo > >>>>in the source) so you’re going to have to filter out bad files > >>>>from your font directories by hand. > >>> > >>>Sounds like the real solution is to fix fontforge so that it doesn't hang. > >> > >>sure, although a crash has the nice advantage of knowing that a font > >>(collection) is crap (which i then can blacklist permanently in my mind) > > > >Sure, but there’s a difference between a crash and a freeze. The > >latter can be quite annoying for those who work with strange > >editors that run TeX somewhere in the background making it > >impossible to kill the process using Ctrl-C. > > it depends what causes the freeze, for instance if there is a > circular reference someplace, then that is hard to catch unless one > uses timeouts which in themselves are tricky (not much different > from browsers locking up on some javascript); keep in mind that we > load a whole font, while other applications might do a partial load > and never see the problematic data (maybe even ignore portions of > the font)
Which is something we ought to do, serializing the whole font to a lua table is problematic in many ways (too slow, takes much memory, etc) while SFNT fonts are designed in such a way that you can go directly to the part you just want. And FontForge is not that robust (and it is not a font loading library after all). I have been dreaming for a while of making an optional font loader for LuaTeX using mature font libraries, e.g. FreeType for loading fonts, HarfBuzz for shaping, may be FriBiDi (not a priority, BiDi in Lua is not hard) and even FontConfig (when available) for searching system fonts. But no much time unfortunately, and the fear that I wouldn't be able to use it with ConTeXt is not that motivating. Someone is, however, experimenting with such a thing: http://www.readytext.co.uk/?p=3143 Regards, Khaled ___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________________
