[NTG-context] something’s wrong with \definefontfallback

[Henning Hraban Ramm]

This used to work:

\definefontfallback[seguiFB]
   [file:seguisym.ttf]
   [0x00000-0xFFFFF]
   [check=yes,force=no]

\definetypeface [contextstart] [ss] [sans]  [segoe] 
[default][fallbacks=seguiFB]

(Intention is to take all missing characters from this symbol font.)


But with current LMTX, I get:



tex error       > tex error on line 48 in file env_contextstart.tex:

lua error:

	registered function call [1145]: 
...-14/tex/texmf-context/tex/context/base/mkxl/math-act.lmt:2339: 
attempt to perform arithmetic on a nil value (field 'depth')
stack traceback:
	...-14/tex/texmf-context/tex/context/base/mkxl/math-act.lmt:2339: in 
local 'action'
	...-14/tex/texmf-context/tex/context/base/mkxl/math-act.lmt:3166: in 
upvalue 'applytweaks'
	...-14/tex/texmf-context/tex/context/base/mkxl/math-act.lmt:3200: in 
upvalue 'mathematics_tweakaftercopyingfont'
	[string "local mathematics_tweakaftercopyingfont = mat..."]:5: in local 
'runner'
	...-14/tex/texmf-context/tex/context/base/mkxl/font-ctx.lmt:504: in 
field 'aftercopyingcharacters'
	...-14/tex/texmf-context/tex/context/base/mkxl/font-con.lmt:859: in 
field 'scale'
	...-14/tex/texmf-context/tex/context/base/mkxl/font-otl.lmt:672: in 
function <...-14/tex/texmf-context/tex/context/base/mkxl/font-otl.lmt:664>
	(...tail calls...)
	...-14/tex/texmf-context/tex/context/base/mkxl/font-def.lmt:378: in 
function <...-14/tex/texmf-context/tex/context/base/mkxl/font-def.lmt:366>
	(...tail calls...)
	...-14/tex/texmf-context/tex/context/base/mkxl/font-def.lmt:484: in 
field 'read'
	...-14/tex/texmf-context/tex/context/base/mkxl/font-ctx.lmt:1371: in 
function <...-14/tex/texmf-context/tex/context/base/mkxl/font-ctx.lmt:1228>
	(...tail calls...)	

43     \usetypescriptfile[contextstart]
44     \usebodyfont[modern]
45     \usebodyfont[cambria]
46     \usebodyfont[segoe]
47
48 >>  \setupbodyfont[contextstart,10pt]


Hraban