Re: [NTG-context] Weird error when using \startformula inside lua
The problem also concerns \starttyping:
\starttext
.
\startluacode
context([[
\starttyping
\stoptyping
]])
\stopluacode
\stoptext
tex error > runaway error: end of file encountered
mtx-context | fatal error: return code: 256
%
\starttext
.
\startluacode
context([[
\starttyping
foobar
\stoptyping
]])
\stopluacode
\stoptext
tex error > tex error on line 5 in file ./test.tex:
lua error:
registered function call [1041]:
...mtx/tex/texmf-context/tex/context/base/mkxl/buff-ini.lmt:534: invalid
value (nil) at index 3 in table for '
concat'
stack traceback:
[C]: in function 'table.concat'
...mtx/tex/texmf-context/tex/context/base/mkxl/buff-ini.lmt:534: in
upvalue 'pickup'
...mtx/tex/texmf-context/tex/context/base/mkxl/buff-ini.lmt:677: in
function <...mtx/tex/texmf-context/tex/context/base/mkxl/buff-ini.lmt:668>
(...tail calls...)
Sylvain
On Sat, 11 Sept 2021 at 05:12, Aditya Mahajan via ntg-context <
ntg-context@ntg.nl> wrote:
> I sometimes define lua functions for showing out worked out calculations.
> The following minimal example shows that
>
> context([[\startformula ... \stopformula]])
>
> fails in LMTX with an error message:
>
> tex error > tex error on line 3 in file ./test.tex: Undefined
> control sequence \undefined
>
> MWE:
>
> \startluacode
> thirddata = thirddata or {}
>
> local comment = [[
> This is a famous formula
> \startformula
> a^2 + b^2 = c^2
> \stopformula
> ]]
>
> function thirddata.explanation()
> context(comment)
> end
>
> \stopluacode
>
> \starttext
> \ctxlua{thirddata.explanation()}
> \stoptext
>
> The actual use case is more complicated (where I use templates, so I don't
> want to convert everything to context.startformula() etc.). The example
> compiles with MkIV but not LMTX.
>
> Any idea what is going on?
>
> Thanks,
> Aditya
>
>
> ___
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> the Wiki!
>
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Re: [NTG-context] Weird error when using \startformula inside lua
On Sat, 11 Sep 2021, Hans Hagen wrote:
> On 9/11/2021 5:11 AM, Aditya Mahajan via ntg-context wrote:
> > I sometimes define lua functions for showing out worked out calculations.
> > The following minimal example shows that
> >
> >context([[\startformula ... \stopformula]])
> >
> > fails in LMTX with an error message:
> >
> > tex error > tex error on line 3 in file ./test.tex: Undefined control
> > sequence \undefined
> >
> > MWE:
> >
> > \startluacode
> >thirddata = thirddata or {}
> >
> >local comment = [[
> > This is a famous formula
> > \startformula
> >a^2 + b^2 = c^2
> > \stopformula
> >]]
> >
> >function thirddata.explanation()
> >context(comment)
> >end
> >
> > \stopluacode
> >
> > \starttext
> > \ctxlua{thirddata.explanation()}
> > \stoptext
> >
> > The actual use case is more complicated (where I use templates, so I don't
> > want to convert everything to context.startformula() etc.). The example
> > compiles with MkIV but not LMTX.
> >
> > Any idea what is going on?
> \enabletrackers[context*]
>
> shows that we have an unprotected \startformula so we need this in
> strc-mat.mkxl:
>
> \permanent\protected\defcsname\e!start\v!formula\endcsname{\strc_formulas_start_formula{}}
> \permanent\protected\defcsname\e!stop
> \v!formula\endcsname{\strc_formulas_stop_formula}
>
> \permanent\tolerant\protected\def\defineformulaalternative[#1]#*[#2]#*[#3]%
> {\frozen\instance\protected\defcsname\e!start#1\v!formula\endcsname{#2}%
>\frozen\instance\protected\defcsname\e!stop #1\v!formula\endcsname{#3}}
>
> (the \protected probably got lost when i added overload protection etc)
Thanks! This fixes the error in my main document as well.
Aditya
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Re: [NTG-context] Weird error when using \startformula inside lua
On 9/11/2021 5:11 AM, Aditya Mahajan via ntg-context wrote:
I sometimes define lua functions for showing out worked out calculations. The
following minimal example shows that
context([[\startformula ... \stopformula]])
fails in LMTX with an error message:
tex error > tex error on line 3 in file ./test.tex: Undefined control
sequence \undefined
MWE:
\startluacode
thirddata = thirddata or {}
local comment = [[
This is a famous formula
\startformula
a^2 + b^2 = c^2
\stopformula
]]
function thirddata.explanation()
context(comment)
end
\stopluacode
\starttext
\ctxlua{thirddata.explanation()}
\stoptext
The actual use case is more complicated (where I use templates, so I don't want
to convert everything to context.startformula() etc.). The example compiles
with MkIV but not LMTX.
Any idea what is going on?
\enabletrackers[context*]
shows that we have an unprotected \startformula so we need this in
strc-mat.mkxl:
\permanent\protected\defcsname\e!start\v!formula\endcsname{\strc_formulas_start_formula{}}
\permanent\protected\defcsname\e!stop
\v!formula\endcsname{\strc_formulas_stop_formula}
\permanent\tolerant\protected\def\defineformulaalternative[#1]#*[#2]#*[#3]%
{\frozen\instance\protected\defcsname\e!start#1\v!formula\endcsname{#2}%
\frozen\instance\protected\defcsname\e!stop #1\v!formula\endcsname{#3}}
(the \protected probably got lost when i added overload protection etc)
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
-
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[NTG-context] Weird error when using \startformula inside lua
I sometimes define lua functions for showing out worked out calculations. The
following minimal example shows that
context([[\startformula ... \stopformula]])
fails in LMTX with an error message:
tex error > tex error on line 3 in file ./test.tex: Undefined control
sequence \undefined
MWE:
\startluacode
thirddata = thirddata or {}
local comment = [[
This is a famous formula
\startformula
a^2 + b^2 = c^2
\stopformula
]]
function thirddata.explanation()
context(comment)
end
\stopluacode
\starttext
\ctxlua{thirddata.explanation()}
\stoptext
The actual use case is more complicated (where I use templates, so I don't want
to convert everything to context.startformula() etc.). The example compiles
with MkIV but not LMTX.
Any idea what is going on?
Thanks,
Aditya
___
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
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archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
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