On 4-6-2011 12:14, Peter Münster wrote:
On Fri, Jun 03 2011, Thomas A. Schmitz wrote:
Ah, expdoifelse is for "expanded doifelse," right? Any examples for such a lua
helper? Sounds good, but I still haven't been able to understand how to mix
xml and lua code.
\startluacode
function my_externalfigure(file, t)
local args_present
for k, v in pairs(t) do
if v == "" then
t[k] = nil
else
args_present = true
end
end
context.externalfigure({file}, args_present and t)
end
\stopluacode
\startxmlsetups xml:externalfigure
\ctxlua{my_externalfigure("\xmlatt{#1}{resource}",
{width = "\xmlatt{#1}{width}", height = "\xmlatt{#1}{height}"})}
\stopxmlsetups
My first idea was "\expanded{\externalfigure[...][\doif...]}" but it
does not work...
you can consider passing #1 and using lxml.att at the lua end or go even
further and pop in your own finalizer
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