On 11/7/2022 11:40 AM, Max Chernoff via ntg-context wrote:
Hi Hans,
Using node.setglue in LuaMetaTeX sets all of the glue components to
zero.
This example:
\startluacode
local stretch_order = "stretch_order"
local shrink_order = "shrink_order"
if status.luatex_engine == "luametatex" then
stretch_order = "stretchorder"
shrink_order ="shrinkorder"
end
local glue = node.new "glue"
print(node.getglue(glue))
node.setglue(glue, 1, 2, 3, 4, 5)
print(node.getglue(glue))
glue.width = 1
glue.stretch = 2
glue.shrink = 3
glue[stretch_order] = 4
glue[shrink_order] = 5
print(node.getglue(glue))
node.setglue(glue, 1, 2, 3, 4, 5)
print(node.getglue(glue))
\stopluacode
produces this output in MkIV:
0 0 0 0 0
1 2 3 4 5
1 2 3 4 5
1 2 3 4 5
but this output in MkXL:
0 0 0 0 0
0 0 0 0 0
1 2 3 4 5
0 0 0 0 0
it is unrelated to luametatex in the sense that it doesn't have that
setter, so we emulate it in node-cmp.lmt:
function node.setglue (n,...) return setglue (todirect(n),...) end
but even then you won't get the '5' as bad values are intercepted ...
i'll also add some extra checks to those field setters
Hans
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Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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