Paul Isambert wrote: > Andreas Matthias <[email protected]> a écrit: >> >> In the following example I expected \mybox to contain `abc' >> eventually. Instead it only contains `bc'. Why is the `a' >> missing? > > You must assign n1 to box.head, as in > > [...] > n1.next = box.head > box.head = n1 > tail = node.slide(n1) > [...] > > otherwise the box still points to its former head as its first node > (which has indeed n1 as its prev node, but it is ignored because scanning > begins at the former head).
Hmm. I see it's working now but I still don't understand why. Function foo creates and returns an hlist `h' and I thought this hlist would be assigned to mybox with tex.setbox(mybox, foo(tex.box.mybox)) Hlist `h' does not contain the original box but the interior of the box, does it? Then why do I have to set box.head? Ciao Andreas
