On 22-7-2011 2:56, Ondřej Hošek wrote:

Greetings,

long-time reader, first-time writer here. I've been using ConTeXt for about a year and, until now, been able to solve all my problems using the wiki or the mailing list, so a "keep up the good work!" is certainly in order. ;-)

My problem concerns kerning in mkiv, which apparently doesn't work for all sans-serif fonts. It does seem to work for TeX Gyre Heros and Latin Modern Sans, but not, as an example of a font shipped with ConTeXt, DejaVu.

Here's a short testcase:

\usetypescript[dejavu] \setupbodyfont[dejavu,12pt,rm]

\starttext

Token (kerned)

T{\char"200C}oken (unkerned)

{\ss Token (kerned)}

{\ss T{\char"200C}oken (unkerned)}

\stoptext

(U+200C is the "zero width non-joiner", rather useful as an invisible breaker of kerns and ligatures.)

\zwnj

Expected behavior: first line "To" kerned, second line "To" not kerned, third line "To" kerned, fourth line "To" not kerned.

works ok here

Differences to expected behavior on my machine (ConTeXt minimals 2011.07.22 01:29): third line "To" not kerned either.

the current version has some heuristics for mode (some fonts need node mode) and script/language (some fonts don't have dflt defined) Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------