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From: "Jairo A. del Rio" <jairoadelrio6@gmail.com>
Newsgroups: gmane.comp.tex.context
Subject: Re: context.delayed as parameter of
 setuphead[before=...]
Date: Mon, 2 Nov 2020 21:28:19 -0500
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On the Lua side, you'll have to pass strings so your example works, as
tables like those in setuphead({somehead}, {somesettings}) are actual Lua
tables and follow Lua, not TeX, rules (see e.g. Lua reference in
https://www.lua.org/manual/5.4/ or, better, CLD manual in
http://www.pragma-ade.nl/general/manuals/cld-mkiv.pdf):


\starttext

\startluacode

--First example

for m =3D 1, 3 do

context.setuphead({'chapter'}, {before=3D'hello'})

context.startchapter({title=3D"I'm a chapter!"})

for i =3D 1, 3 do

context.input("knuth")

end

context.stopchapter()

end


--Second example

--We'll pass some strings to TeX

local nice =3D "ConTeXt is love, ConTeXt is life"

local somehead =3D 'chapter'

local sometext =3D 'vallejo-trilce-es'


context.setuphead({somehead}, {before=3Dnice})

context.startchapter({title=3Dsomehead})

context.input(sometext)

context.stopchapter()

\stopluacode

\stoptext


I hope examples help.

Regards,

Jairo :)



El lun., 2 de nov. de 2020 a la(s) 21:09, Sylvain Hubert (
champignoom@gmail.com) escribi=C3=B3:

> Dear List,
>
> I'm trying to mirror the context command
>   `\setuphead[chapter][before=3Dhello]`
> into lua with delayed typesetting of 'hello', but
>   `\ctxlua{context.setuphead({'chapter'},
> {before=3Dcontext.delayed'hello'})}`
> does not have any effect. Could anyone help me on this? Thanks!
>
> Best,
> Sylvain
>
> _________________________________________________________________________=
__________
> If your question is of interest to others as well, please add an entry to
> the Wiki!
>
> maillist : ntg-context@ntg.nl /
> http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
>
> _________________________________________________________________________=
__________
>

--0000000000005cc6dc05b32a9e08
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<div dir=3D"ltr">

<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">On the Lua sid=
e, you&#39;ll have to pass strings so your example works, as tables like th=
ose in setuphead({somehead}, {somesettings}) are actual Lua tables and foll=
ow Lua, not TeX, rules (see e.g. Lua reference in <a href=3D"https://www.lu=
a.org/manual/5.4/">https://www.lua.org/manual/5.4/</a> or, better, CLD manu=
al in <a href=3D"http://www.pragma-ade.nl/general/manuals/cld-mkiv.pdf">htt=
p://www.pragma-ade.nl/general/manuals/cld-mkiv.pdf</a>):</p><p style=3D"mar=
gin:0px;text-indent:0px;white-space:pre-wrap"><br></p>

<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">\starttext</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">\startluacode =
</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">--First exampl=
e</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">for m =3D 1, 3=
 do</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">    context.se=
tuphead({&#39;chapter&#39;}, {before=3D&#39;hello&#39;})</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">    context.st=
artchapter({title=3D&quot;I&#39;m a chapter!&quot;})</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">    for i =3D =
1, 3 do</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">        contex=
t.input(&quot;knuth&quot;)</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">    end</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">    context.st=
opchapter()</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">end</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap"><br></p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">--Second examp=
le</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">--We&#39;ll pa=
ss some strings to TeX<br></p><p style=3D"margin:0px;text-indent:0px;white-=
space:pre-wrap">local nice =3D &quot;ConTeXt is love, ConTeXt is life&quot;=
</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">local somehead=
 =3D &#39;chapter&#39;</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">local sometext=
 =3D &#39;vallejo-trilce-es&#39;</p><p style=3D"margin:0px;text-indent:0px;=
white-space:pre-wrap"><br></p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">context.setuph=
ead({somehead}, {before=3Dnice})</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">context.startc=
hapter({title=3Dsomehead})</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">context.input(=
sometext)</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">context.stopch=
apter()</p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">\stopluacode</=
p>
<p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">\stoptext</p><=
p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap"><br></p><p styl=
e=3D"margin:0px;text-indent:0px;white-space:pre-wrap">I hope examples help.=
<br></p><p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap">Regard=
s, <br><br></p><p style=3D"margin:0px;text-indent:0px;white-space:pre-wrap"=
>Jairo :)<br></p><p style=3D"margin:0px;text-indent:0px;white-space:pre-wra=
p"><br></p></div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"g=
mail_attr">El lun., 2 de nov. de 2020 a la(s) 21:09, Sylvain Hubert (<a hre=
f=3D"mailto:champignoom@gmail.com">champignoom@gmail.com</a>) escribi=C3=B3=
:<br></div><blockquote class=3D"gmail_quote" style=3D"margin:0px 0px 0px 0.=
8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir=3D"lt=
r"><div>Dear List,</div><div><br></div><div>I&#39;m trying to mirror the co=
ntext command</div><div>=C2=A0 `\setuphead[chapter][before=3Dhello]`</div><=
div>into lua with delayed typesetting of &#39;hello&#39;, but</div><div>=C2=
=A0 `\ctxlua{context.setuphead({&#39;chapter&#39;}, {before=3Dcontext.delay=
ed&#39;hello&#39;})}`</div><div>does not have any effect. Could anyone help=
 me on this? Thanks!</div><div><br></div><div>Best,</div><div>Sylvain<br></=
div></div>
___________________________________________________________________________=
________<br>
If your question is of interest to others as well, please add an entry to t=
he Wiki!<br>
<br>
maillist : <a href=3D"mailto:ntg-context@ntg.nl" target=3D"_blank">ntg-cont=
ext@ntg.nl</a> / <a href=3D"http://www.ntg.nl/mailman/listinfo/ntg-context"=
 rel=3D"noreferrer" target=3D"_blank">http://www.ntg.nl/mailman/listinfo/nt=
g-context</a><br>
webpage=C2=A0 : <a href=3D"http://www.pragma-ade.nl" rel=3D"noreferrer" tar=
get=3D"_blank">http://www.pragma-ade.nl</a> / <a href=3D"http://context.aan=
het.net" rel=3D"noreferrer" target=3D"_blank">http://context.aanhet.net</a>=
<br>
archive=C2=A0 : <a href=3D"https://bitbucket.org/phg/context-mirror/commits=
/" rel=3D"noreferrer" target=3D"_blank">https://bitbucket.org/phg/context-m=
irror/commits/</a><br>
wiki=C2=A0 =C2=A0 =C2=A0: <a href=3D"http://contextgarden.net" rel=3D"noref=
errer" target=3D"_blank">http://contextgarden.net</a><br>
___________________________________________________________________________=
________<br>
</blockquote></div>

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