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From: Hans van der Meer via ntg-context <ntg-context@ntg.nl>
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Subject: Re: parameters TeX->LuaTeX
Date: Sun, 5 Sep 2021 10:39:19 +0200
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And \ListSort[[abc]]{value} turns out to be worse: doesn't makes it into =
LuaTeX at all.
dr. Hans van der Meer


> On 5 Sep 2021, at 10:14, Hans van der Meer via ntg-context =
<ntg-context@ntg.nl> wrote:
>=20
> There is something I do not understand in the passing of parameters =
from TeX to LuaTex.
> This is my TeX definition:
> =
\def\ListSort[#1]#2{\directlua{hvdm.listsort([=3D=3D=3D[#2]=3D=3D=3D],[=3D=
=3D=3D[#1]=3D=3D=3D])}}
>=20
> Calling \ListSort[sep=3D{ + }]{} delivers the string  'sep=3D{ + }' =
into LuaTeX as the printout in the logfile shows and as intended.
> However in \ListSort[{ + }]{} the braces have disappeared and =
transferred is nothing more than ' + '.
>=20
> Why is the transfer messing up the character string I am passing by =
removing the outer braces? Is this a bug or is it an unavoidable =
consequence of the TeX-LuaTeX interface?
>=20
> dr. Hans van der Meer
>=20
>=20
> =
__________________________________________________________________________=
_________
> If your question is of interest to others as well, please add an entry =
to the Wiki!
>=20
> 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
> =
__________________________________________________________________________=
_________


--Apple-Mail=_AFBBFDF9-66AB-4A90-B9AC-26C4AFA5A988
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html; =
charset=3Dus-ascii"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D"">And =
<font face=3D"Courier" class=3D"">\ListSort[[abc]]{value}</font> turns =
out to be worse: doesn't makes it into LuaTeX at all.<br class=3D""><div =
class=3D"">
<div style=3D"color: rgb(0, 0, 0); letter-spacing: normal; text-align: =
start; text-indent: 0px; text-transform: none; white-space: normal; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;" class=3D""><div style=3D"color: rgb(0, 0, 0); =
font-family: Helvetica; font-style: normal; font-variant-ligatures: =
normal; font-variant-caps: normal; font-variant-east-asian: normal; =
font-variant-position: normal; font-weight: normal; letter-spacing: =
normal; line-height: normal; orphans: 2; text-align: -webkit-auto; =
text-indent: 0px; text-transform: none; white-space: normal; widows: 2; =
word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: =
break-word; -webkit-nbsp-mode: space; -webkit-line-break: =
after-white-space;" class=3D"">dr. Hans van der Meer<br class=3D""><br =
class=3D""></div></div>
</div>
<div><br class=3D""><blockquote type=3D"cite" class=3D""><div =
class=3D"">On 5 Sep 2021, at 10:14, Hans van der Meer via ntg-context =
&lt;<a href=3D"mailto:ntg-context@ntg.nl" =
class=3D"">ntg-context@ntg.nl</a>&gt; wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><meta =
http-equiv=3D"Content-Type" content=3D"text/html; charset=3Dus-ascii" =
class=3D""><div style=3D"word-wrap: break-word; -webkit-nbsp-mode: =
space; line-break: after-white-space;" class=3D"">There is something I =
do not understand in the passing of parameters from TeX to LuaTex.<div =
class=3D"">This is my TeX definition:</div><div class=3D""><div =
class=3D""><font face=3D"Courier" =
class=3D"">\def\ListSort[#1]#2{\directlua{hvdm.listsort([=3D=3D=3D[#2]=3D=3D=
=3D],[=3D=3D=3D[#1]=3D=3D=3D])}}</font></div><div class=3D""><br =
class=3D""></div><div class=3D"">Calling <font face=3D"Courier" =
class=3D"">\ListSort[sep=3D{ + }]</font>{} delivers the string =
&nbsp;'<font face=3D"Courier" class=3D"">sep=3D{ + }'&nbsp;</font>into =
LuaTeX as the printout in the logfile shows and as intended.</div><div =
class=3D"">However in <font face=3D"Courier" class=3D"">\ListSort[{ + =
}]{}&nbsp;</font>the braces have disappeared and transferred is nothing =
more than '<font face=3D"Courier" class=3D""> + </font>'.</div><div =
class=3D""><br class=3D""></div><div class=3D"">Why is the transfer =
messing up the character string I am passing by removing the outer =
braces? Is this a bug or is it an unavoidable consequence of the =
TeX-LuaTeX interface?</div><div class=3D""><br class=3D""></div><div =
class=3D"">
<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; word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D""><div =
style=3D"font-family: Helvetica; font-style: normal; =
font-variant-ligatures: normal; font-variant-caps: normal; =
font-variant-east-asian: normal; font-variant-position: normal; =
font-weight: normal; letter-spacing: normal; line-height: normal; =
orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: =
none; white-space: normal; widows: 2; word-spacing: 0px; =
-webkit-text-stroke-width: 0px; word-wrap: break-word; =
-webkit-nbsp-mode: space; line-break: after-white-space;" class=3D"">dr. =
Hans van der Meer<br class=3D""><br class=3D""></div></div>
</div>

<br =
class=3D""></div></div>___________________________________________________=
________________________________<br class=3D"">If your question is of =
interest to others as well, please add an entry to the Wiki!<br =
class=3D""><br class=3D"">maillist : <a href=3D"mailto:ntg-context@ntg.nl"=
 class=3D"">ntg-context@ntg.nl</a> / <a =
href=3D"http://www.ntg.nl/mailman/listinfo/ntg-context" =
class=3D"">http://www.ntg.nl/mailman/listinfo/ntg-context</a><br =
class=3D"">webpage &nbsp;: <a href=3D"http://www.pragma-ade.nl" =
class=3D"">http://www.pragma-ade.nl</a> / <a =
href=3D"http://context.aanhet.net" =
class=3D"">http://context.aanhet.net</a><br class=3D"">archive &nbsp;: =
<a href=3D"https://bitbucket.org/phg/context-mirror/commits/" =
class=3D"">https://bitbucket.org/phg/context-mirror/commits/</a><br =
class=3D"">wiki &nbsp;&nbsp;&nbsp;&nbsp;: <a =
href=3D"http://contextgarden.net" =
class=3D"">http://contextgarden.net</a><br =
class=3D"">_______________________________________________________________=
____________________<br class=3D""></div></blockquote></div><br =
class=3D""></body></html>=

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