Hi, I was trying to use a quick calculation like the new mathfun in lmtx for an older mkiv document. MWE from the wiki: https://wiki.contextgarden.net/Programming_in_LuaTeX#Examples \starttext $\pi = \ctxlua{context("\%.6f", math.pi)}$ \stoptext But that gives an error (actually for both lmtx and mkiv): token call, syntax: [ctxlua]:1: invalid escape sequence near '"\%' Whereas \starttext $\pi = \startluacode context("%.6f", math.pi) \stopluacode$ \stoptext Works fine as expected. Is there a way to escape the percentage sign in ctxlua as a format value? Adam
Hi, Adam. There are some ways to do it. I'm sure there are many more, but I don't remember them right now. Hi, Hans. There's a bug (?) in syst-lua.lua related to \expression in MkIV (xmath and xcomplex aren't defined). Please fix that %Temporary hack for MkIV %Only use it in case \expression ... \relax doesn't work \startmkivmode \startluacode xmath = xmath or math xcomplex = xcomplex or {} --maybe math too??? \stopluacode \stopmkivmode \starttext $\pi = \ctxlua{context("\letterpercent.6f", math.pi)}$ $\pi = \expression string.format("\letterpercent.6f", pi)\relax$ %Changing catcodes so $ and % are letter characters \startasciimode \m{\pi = \expression ("%.6f"):format(pi) \relax} \m{\pi = \ctxlua{context("%.6f", math.pi)}} \stopasciimode \stoptext Regards, Jairo El sáb, 29 de may. de 2021 a la(s) 07:32, Adam Reviczky (reviczky@gmail.com) escribió:
Hi,
I was trying to use a quick calculation like the new mathfun in lmtx for an older mkiv document.
MWE from the wiki: https://wiki.contextgarden.net/Programming_in_LuaTeX#Examples
\starttext $\pi = \ctxlua{context("\%.6f", math.pi)}$ \stoptext
But that gives an error (actually for both lmtx and mkiv): token call, syntax: [ctxlua]:1: invalid escape sequence near '"\%'
Whereas
\starttext $\pi = \startluacode context("%.6f", math.pi) \stopluacode$ \stoptext
Works fine as expected.
Is there a way to escape the percentage sign in ctxlua as a format value?
Adam
___________________________________________________________________________________ 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
___________________________________________________________________________________
Thank you Jairo!
I have tried playing around with letterpercent/catcodes as well, not sure
what I did wrong, but your examples work just fine, so thanks again.
Adam
On Sat, May 29, 2021 at 2:04 PM Jairo A. del Rio
Hi, Adam. There are some ways to do it. I'm sure there are many more, but I don't remember them right now. Hi, Hans. There's a bug (?) in syst-lua.lua related to \expression in MkIV (xmath and xcomplex aren't defined). Please fix that
%Temporary hack for MkIV
%Only use it in case \expression ... \relax doesn't work
\startmkivmode
\startluacode
xmath = xmath or math
xcomplex = xcomplex or {} --maybe math too???
\stopluacode
\stopmkivmode
\starttext
$\pi = \ctxlua{context("\letterpercent.6f", math.pi)}$
$\pi = \expression string.format("\letterpercent.6f", pi)\relax$
%Changing catcodes so $ and % are letter characters
\startasciimode
\m{\pi = \expression ("%.6f"):format(pi) \relax}
\m{\pi = \ctxlua{context("%.6f", math.pi)}}
\stopasciimode
\stoptext
Regards,
Jairo
El sáb, 29 de may. de 2021 a la(s) 07:32, Adam Reviczky ( reviczky@gmail.com) escribió:
Hi,
I was trying to use a quick calculation like the new mathfun in lmtx for an older mkiv document.
MWE from the wiki: https://wiki.contextgarden.net/Programming_in_LuaTeX#Examples
\starttext $\pi = \ctxlua{context("\%.6f", math.pi)}$ \stoptext
But that gives an error (actually for both lmtx and mkiv): token call, syntax: [ctxlua]:1: invalid escape sequence near '"\%'
Whereas
\starttext $\pi = \startluacode context("%.6f", math.pi) \stopluacode$ \stoptext
Works fine as expected.
Is there a way to escape the percentage sign in ctxlua as a format value?
Adam
___________________________________________________________________________________ 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
___________________________________________________________________________________
___________________________________________________________________________________ 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
___________________________________________________________________________________
On 5/29/2021 3:02 PM, Jairo A. del Rio wrote:
Hi, Adam. There are some ways to do it. I'm sure there are many more, but I don't remember them right now. Hi, Hans. There's a bug (?) in syst-lua.lua related to \expression in MkIV (xmath and xcomplex aren't defined). Please fix that
something local result = CONTEXTLMTXMODE > 0 and { "local xmath = xmath local xcomplex = xcomplex return " } or { "local xmath = math local xcomplex = { } return " } you can test it
%Temporary hack for MkIV
%Only use it in case \expression ... \relax doesn't work
kind of old (hacky experiment) that one ... i probably need to adapt it to lmtx anyway \luaexpr and \mathexpr are probably better for this kind of stuff (no need for the % then when the optional format arg is used) Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------
participants (3)
-
Adam Reviczky -
Hans Hagen -
Jairo A. del Rio