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Subject: Re: [NTG-context] xmlsetentity on the fly?
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From: Hans van der Meer via ntg-context <ntg-context@ntg.nl>
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Cc: Hans van der Meer <havdmeer@ziggo.nl>
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After some experiments I am now fairly convinced that the entities are =
substituted BEFORE the typesettting actually starts. And thus changing =
the entity on the fly will have no effect. Is there a flag that can be =
set in order to delay the substitution until the actual moment of =
typesetting that part of the input? I examined files lxml-ent.lua and =
lxml-tex.lua but could not find how to this.

dr. Hans van der Meer

> On 17 Apr 2023, at 18:11, Hans van der Meer via ntg-context =
<ntg-context@ntg.nl> wrote:
>=20
> I tried=20
> \directlua{xml.registerentity("DATE","NEWDATE")}
>=20
> but neither does effect a change in the entity.
>=20
> Why is that entry not set in the Lua-table entities? (file =
xml-ent.lua) has as that function:
>=20
> function xml.registerentity(key,value)
>     entities[key] =3D value
>     if trace_entities then
>         report_xml("registering entity %a as %a",key,value)
>     end
> end
>=20
>=20
>> On 17 Apr 2023, at 12:32, Hans van der Meer <havdmeer@ziggo.nl> =
wrote:
>>=20
>> I would like to change an entity 'on the fly'. Example
>>=20
>> \def\DATE{THEDATE}\expanded{\xmlsetentity{DATE}{\DATE}}
>>=20
>> \startxmlsetups typ:event
>>=20
>> 	\def\DATE{NEWDATE}\expanded{\xmlsetentity{DATE}{\DATE}}
>>=20
>> Using &DATE; within the <event>.
>>=20
>> \stopxmlsetups
>>=20
>> However, using &DATE; inside an <event> always results in THEDATE and =
never in NEWDATE.
>>=20
>> How can I change the value of the entity inside the xmlsetups?
>>=20
>=20
> dr. Hans van der Meer
> =
__________________________________________________________________________=
_________
> If your question is of interest to others as well, please add an entry =
to the Wiki!
>=20
> maillist : ntg-context@ntg.nl / =
https://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : https://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : https://contextgarden.net
> =
__________________________________________________________________________=
_________


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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; =
charset=3Dus-ascii"></head><body style=3D"overflow-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;">After some =
experiments I am now fairly convinced that the entities are substituted =
BEFORE the typesettting actually starts. And thus changing the entity on =
the fly will have no effect. Is there a flag that can be set in order to =
delay the substitution until the actual moment of typesetting that part =
of the input? I examined files lxml-ent.lua and lxml-tex.lua but could =
not find how to this.<div><br><div>dr. Hans van der =
Meer<br></div><div><br></div><div><blockquote type=3D"cite"><div>On 17 =
Apr 2023, at 18:11, Hans van der Meer via ntg-context =
&lt;ntg-context@ntg.nl&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div><meta http-equiv=3D"content-type"=
 content=3D"text/html; charset=3Dus-ascii"><div style=3D"overflow-wrap: =
break-word; -webkit-nbsp-mode: space; line-break: =
after-white-space;"><div>I tried&nbsp;</div><div><font face=3D"Courier =
New">\directlua{xml.registerentity("DATE","NEWDATE")}</font></div><div><br=
></div><div>but neither does effect a change in the =
entity.</div><div><br></div><div>Why is that entry not set in the =
Lua-table entities? (file xml-ent.lua) has as that =
function:</div><div><br></div><div><div><font face=3D"Courier =
New">function xml.registerentity(key,value)</font></div><div><font =
face=3D"Courier New">&nbsp; &nbsp; entities[key] =3D =
value</font></div><div><font face=3D"Courier New">&nbsp; &nbsp; if =
trace_entities then</font></div><div><font face=3D"Courier New">&nbsp; =
&nbsp; &nbsp; &nbsp; report_xml("registering entity %a as =
%a",key,value)</font></div><div><font face=3D"Courier New">&nbsp; &nbsp; =
end</font></div><div><font face=3D"Courier =
New">end</font></div></div><div><br></div><div><br></div><div><blockquote =
type=3D"cite"><div>On 17 Apr 2023, at 12:32, Hans van der Meer =
&lt;havdmeer@ziggo.nl&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div><meta http-equiv=3D"content-type"=
 content=3D"text/html; charset=3Dus-ascii"><div style=3D"overflow-wrap: =
break-word; -webkit-nbsp-mode: space; line-break: after-white-space;">I =
would like to change an entity 'on the fly'. =
Example<div><br></div><div><div><font face=3D"Courier =
New">\def\DATE{THEDATE}\expanded{\xmlsetentity{DATE}{\DATE}}</font></div><=
div><font face=3D"Courier New"><br></font></div><div><font face=3D"Courier=
 New">\startxmlsetups typ:event</font></div><div><font face=3D"Courier =
New"><br></font></div><div><span style=3D"font-family: &quot;Courier =
New&quot;;"><span class=3D"Apple-tab-span" style=3D"white-space:pre">	=
</span>\def\DATE{NEWDATE}\expanded{\xmlsetentity{DATE}{\DATE}}</span></div=
><div><span style=3D"font-family: &quot;Courier =
New&quot;;"><br></span></div><div><span style=3D"font-family: =
&quot;Courier New&quot;;">Using &amp;DATE; within the =
&lt;event&gt;.</span></div><div><span style=3D"font-family: =
&quot;Courier New&quot;;"><br></span></div><div><span =
style=3D"font-family: &quot;Courier =
New&quot;;">\stopxmlsetups</span></div></div><div><br></div><div>However, =
using &amp;DATE; inside an &lt;event&gt; always results in THEDATE and =
never in NEWDATE.</div><div><br></div><div>How can I change the value of =
the entity inside the xmlsetups?</div><div><br><div>
<div style=3D"letter-spacing: normal; text-align: start; text-indent: =
0px; text-transform: none; white-space: normal; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; overflow-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: =
after-white-space;"></div></div></div></div></div></blockquote><div><div =
style=3D"overflow-wrap: break-word; -webkit-nbsp-mode: space; =
line-break: after-white-space;"><div><div><div style=3D"letter-spacing: =
normal; text-align: start; text-indent: 0px; text-transform: none; =
white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; =
overflow-wrap: break-word; -webkit-nbsp-mode: space; line-break: =
after-white-space;"><div><br></div><div>dr. Hans van der =
Meer</div></div></div></div></div></div></div></div>______________________=
_____________________________________________________________<br>If your =
question is of interest to others as well, please add an entry to the =
Wiki!<br><br>maillist : ntg-context@ntg.nl / =
https://www.ntg.nl/mailman/listinfo/ntg-context<br>webpage &nbsp;: =
https://www.pragma-ade.nl / http://context.aanhet.net<br>archive &nbsp;: =
https://bitbucket.org/phg/context-mirror/commits/<br>wiki =
&nbsp;&nbsp;&nbsp;&nbsp;: =
https://contextgarden.net<br>_____________________________________________=
______________________________________<br></div></blockquote></div><br></d=
iv></body></html>=

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___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / https://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : https://www.pragma-ade.nl / http://context.aanhet.net
archive  : https://bitbucket.org/phg/context-mirror/commits/
wiki     : https://contextgarden.net
___________________________________________________________________________________

--===============5841130930713836345==--