Dear Colleagues,
the following code fails assertion (luafont.c, line 1950). But it is
enough to transpone last two lines of lua code to avoid it. Could
someone explain why the order of node linking matters here?
\nokerns=1 \noligs=1
\setbox100=\hbox{ab\-xx}
\directlua{% here we move glyph b into disc node
local a = tex.box[100].list % glyph a
local b = a.next % glyph b
local d = b.next % discretionary
local _ = d.pre % prebreak dash
a.next = d d.prev = a % couple glyph a with disc
d.pre = b % let glyph b be prebreak
b.next = _ _.prev = b % couple glyph b with dash
}
\hsize0pt \overfullrule0pt \hfuzz\maxdimen % force hyphenation
\unhbox100 % flush the list
\end
Apparently the assigment
discretionary.pre = someglyph
someglyph.next = someother
and
someglyph.next = someother
discretionary.pre = someglyph
is not the same. Why?
Warm greets to u all, Paweł
--
Pawe/l Jackowski
[email protected]
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