[luatex] Question regarding lang.hyphenation

[Paul Isambert]

Le 11/01/2011 16:11, Patrick Gundlach a écrit :
> Hi all,
>
> see the attached code. It creates a new dummy language, adds a hyphenation exception ("Au-to-bahn"), calls lang.hyphenate() but no disc node has been created. I would have expected two disc nodes at the places where I put the dashes in the hyphenation exception.
>
> Perhaps I am using it incorrectly?
>
> Patrick
>
> --------------------------------------------------------------------------------
> \directlua{
>   local l = lang.new(99)
>   lang.hyphenation(l, "Au-to-bahn")
>
>   local char,head,n,last
>   for s in string.utfvalues("Autobahn") do
>    char = unicode.utf8.char(s)
>    n = node.new("glyph")
>    n.subtype = 1
>    n.font = 1
>    n.char = s
>    n.lang = 99
>    n.left = 1
>    n.right = 1
>
>
>    if head then
>      last.next = n
>    else
>      head = n
>    end
>    last = n
>   end
>
>   node.slide(head)
>   assert(lang.hyphenate(head),"lang.hyphenate")
>
>   local cur = head
>   while cur do
>    if cur.id == 7 then
>    texio.write_nl( "----  a disc node! " ) % never printed
>    end
>    cur = cur.next
>   end
> }
> \bye

You should set uchyph=1 for all nodes, since Autobahn since starts with 
an uppercase letter.

Best,
Paul