On Fri, 2018-04-20 at 08:39 +0200, Hans Hagen wrote: > On 4/20/2018 8:24 AM, Henri Menke wrote: > > > > On Fri, 2018-04-20 at 07:47 +0200, Herbert Voss wrote: > > > > > > Am 20.04.2018 um 05:52 schrieb Henri Menke: > > > > > > > > > > > > > > > I'm trying to determine the kerning between two letters (here A and V). > > > > For > > > > the > > > > sake of this example I'm inserting negative kerning of -400/1000 em. > > > > However, > > > > when I examine the kern in the kerning callback this massive enhancement > > > > of > > > > the > > > > negative kern doesn't show up but I only see the kerning from the font > > > > itself. > > > > > > > > How can I access the user-defined kerns? MWE is below. > > > no problem with > > No, that is not my problem. The kern is correct in the output. However, I > > cannot inspect the kern from within the "kerning" callback. The user- > > defined > > kern is not added inside the kerning callback and I want to know how to > > query it > > (see the line annotated with <--). > the kerning and ligaturing callbacks are for text (an deven then only > make sense for traditional fonts with a kern and ligature table) > > rendering math is done completely different and is a two pass process; > there are often two code paths, one for traditonal math and one for > opentype and opentype >
Could it be that you replied to the wrong thread? There is no math in this example. > kerning/glueing there is done based on character classes, math > parameters and specific font information (the initial math list is more > complex than a textual node list) > > eventualy the typoeset math becomes a sequence of regular nodes injected > in the list that makes a paragraph > > Hans > > ----------------------------------------------------------------- > Hans Hagen | PRAGMA ADE > Ridderstraat 27 | 8061 GH Hasselt | The Netherlands > tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl > -----------------------------------------------------------------
