Determinig the script from the text is not hard. It has been done in many projects.
On Sun, Dec 2, 2012 at 2:12 PM, Khaled Hosny <khaledho...@eglug.org> wrote: > On Sun, Dec 02, 2012 at 10:58:56AM +0100, Steve White wrote: > > Hi all, > > > > I finally got something like Pablo's test working on my system. It > doesn't > > show much new. As had already been established, with the right ConTeXt > > switches, OpenType features of kerning and ligatures work correctly with > > FreeSerif. > > > > Find attached. If there's a better way to do this, please comment: I may > > put some of this in the FreeFront usage notes. (Hm... I may tighten the > > italic y a bit.) > > > > A question remains: Why does ConTeXt (like some other TeX derivatives > that > > use OpenType) not determine the OpenType script of runs of text from the > > Unicode (or other encoding) character range? All other font layout > systems > > I know of do this. (Remember- a run of text in the OpenType sense is not > > the same as the scope of a TeX environment, it is typically a word, > > separated by white space or punctuation.) > > Determining the script of a run of text is not that simple, take > "english (ARABIC.)"; to which script should the parenthesis and the > period be classified? (they have a "common" script property in Unicode > and not assigned to any given script). Unicode annex #24 provides an > algorithm for to handle this that an engine should implement: > http://www.unicode.org/reports/tr24/ > > 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 > > ___________________________________________________________________________________ >
___________________________________________________________________________________ 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 ___________________________________________________________________________________
