[NTG-context] issue embedding from Lua code

Pablo Rodriguez oinos at gmx.es
Fri Nov 1 08:20:17 CET 2019

Dear list,

I have the following sample:

\setupinteraction[state=start]
\starttext
\startluacode
function document.special_attachment(reference)
year = reference:sub(7, 10)
attachment_url = "https://www.boe.es/buscar/pdf/" ..
year .. "/" .. reference .. "-consolidado.pdf"
return attachment_url
end
\stopluacode

\unexpanded\def\giveattachment#1{%
\cldcontext{document.special_attachment("#1")}}

\def\cE{BOE-A-1978-31229}

\attachment[file={\giveattachment{\cE}}, color=red]

color=blue]

\giveattachment{\cE}

\stoptext

I don’t know why I do get the second attachment, but not the first one.
Lua code seems to be fine (given the last command in the sample).

Could anyone explain me what I’m doing wrong?

Many thanks for your help,

Pablo
--
http://www.ousia.tk