On 7/20/2015 6:49 PM, Pablo Rodriguez wrote:

Hans,

I have the following sample (it includes Lua code for underscore hyphenation):

\startluacode function document.addfunnyhyphen(tfmdata) local underscore = utf.byte("_") local char = tfmdata.characters[underscore] if not char then return end tfmdata.characters[0xFE000] = { width = 0, height = 0, depth = 0, commands = { { "right", -char.width }, { "down", char.depth }, { "slot", 1, underscore }, } } end utilities.sequencers.appendaction("aftercopyingcharacters", "after","document.addfunnyhyphen") \stopluacode

\definehyphenationfeatures [underscore] [righthyphenchar="FE000]

\setuphyphenation [method=traditional]

\sethyphenationfeatures [strict]

\definefontfamily[svb][rm][SV Basic Manual]

\setupbodyfont[svb]

\starttext \hyphenatedword{legibility} \stoptext

For some reason, the font gives the following error with the Lua code (font can be downloaded from http://dl.dafont.com/dl/?f=sv_basic_manual):

lua error > lua error on line 33 in file svb.tex: .../ctxbeta/tex/texmf-context/tex/context/base/font-ctx.lua:1194: bad argument #9 to 'define' (number expected, got nil) stack traceback: [C]: in function 'define' .../ctxbeta/tex/texmf-context/tex/context/base/font-ctx.lua:1194: in function <.../ctxbeta/tex/texmf-context/tex/context/base/font-ctx.lua:1049> 33 >> \setupbodyfont[svb]

The weird thing here is that the Lua code isn’t applied to the problematic font.

Is there a way to fix this strange interaction?

in that font the underscore has no depth, so: commands = { { "right", -char.width }, { "down", char.depth or 0 }, { "slot", 1, underscore }, } ----------------------------------------------------------------- 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 -----------------------------------------------------------------