[NTG-context] fontloader error in latex: attempt to call upvalue 'getdirection' (a nil value)
I just tried to import the fontloader from 2019-01-03 into latex,
and get on a simple document the error
(./test-utf8.aux)error:
...ad/texmf/tex/luatex/luaotfload/fontloader-2019-01-03.lua:23868:
attempt to call upvalue 'getdirection' (a nil value)
.
\newpage ...k \@nobreakfalse \everypar {}\fi \par
\ifdim \prevdepth
>\z@ \vs...
l.51 \end{document}
I have no idea (yet) if this is latex specific or if it could affect
context too but thought I better mention it. The line refers to this
part of the code:
pardirstate=function(start)
local nxt=getnext(start)
local dir=getdirection(start) --<--
if dir==lefttoright then
return nxt,1,1
--
Ulrike Fischer
https://www.troubleshooting-tex.de/
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Re: [NTG-context] lua lpeg + utf8
On 06.01.19 23:08, Hans Hagen wrote: what do you mean with "running luatex alone" ; you can run scripts with mtxrun --script yourscript foo.txt (or do you mean something different) Hi Hans, thanks, this is what I meant! I guess I was trying to reinvent the wheel and doing things in pure Lua, but processing utf8 is indeed much easier with all the context functions. So thanks, I hope I can take it from here! Thomas ___ 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 ___
Re: [NTG-context] lua lpeg + utf8
On 1/6/2019 8:14 PM, Thomas A. Schmitz wrote:
On 06.01.19 19:20, Wolfgang Schuster wrote:
\starttext
\startluacode
print("abcdeφὴὰabcde")
local remap = utf.remapper { a = "y", c = "z", ὴ = "ή", ὰ = "ά" }
print(remap("abcdeφὴὰabcde"))
\stopluacode
\stoptext
Wolfgang, thank you, I should have looked into this manual! Is there an
easy way to load the necessary additional libraries if I'm running
luatex alone, outside of mtxrun?
what do you mean with "running luatex alone" ; you can run scripts with
mtxrun --script yourscript foo.txt
(or do you mean something different)
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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Re: [NTG-context] lua lpeg + utf8
On 06.01.19 19:20, Wolfgang Schuster wrote:
\starttext
\startluacode
print("abcdeφὴὰabcde")
local remap = utf.remapper { a = "y", c = "z", ὴ = "ή", ὰ = "ά" }
print(remap("abcdeφὴὰabcde"))
\stopluacode
\stoptext
Wolfgang, thank you, I should have looked into this manual! Is there an
easy way to load the necessary additional libraries if I'm running
luatex alone, outside of mtxrun?
Thomas
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Re: [NTG-context] lua lpeg + utf8
Thomas A. Schmitz schrieb am 06.01.19 um 18:53:
Hi everybody,
best wishes for (the still new) 2019! My question is not strictly a
ConTeXt problem, but about the way luatex (and pure Lua) can handle utf8
in lpeg. Here is my Lua example:
mystring = "abcdeφὴὰabcde"
local replace_table = {
a = "y",
c = "z",
ὴ = "ή",
ὰ = "ά",
}
function replace(s)
local patt = (lpeg.Cs(1)) / replace_table
local parser = lpeg.Cs((patt + 1)^0)
t = parser:match(s)
return t
end
newstring = replace(mystring)
print(newstring)
This will successfully replace "a" and "c," but not "ὴ" or "ὰ" because
lpeg.Cs(1) sees only the first byte of these multibyte characters. Pure
Lua complains with an error message; luatex runs, but does not do the
replacement. What would be a good way to work around this limitation?
Below is a modified version of the example on page 103 of the ConTeXt
Lua Documents (cld-mkiv.pdf) manual.
\starttext
\startluacode
print("abcdeφὴὰabcde")
local remap = utf.remapper { a = "y", c = "z", ὴ = "ή", ὰ = "ά" }
print(remap("abcdeφὴὰabcde"))
\stopluacode
\stoptext
Wolfgang
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[NTG-context] lua lpeg + utf8
Hi everybody,
best wishes for (the still new) 2019! My question is not strictly a
ConTeXt problem, but about the way luatex (and pure Lua) can handle utf8
in lpeg. Here is my Lua example:
mystring = "abcdeφὴὰabcde"
local replace_table = {
a = "y",
c = "z",
ὴ = "ή",
ὰ = "ά",
}
function replace(s)
local patt = (lpeg.Cs(1)) / replace_table
local parser = lpeg.Cs((patt + 1)^0)
t = parser:match(s)
return t
end
newstring = replace(mystring)
print(newstring)
This will successfully replace "a" and "c," but not "ὴ" or "ὰ" because
lpeg.Cs(1) sees only the first byte of these multibyte characters. Pure
Lua complains with an error message; luatex runs, but does not do the
replacement. What would be a good way to work around this limitation?
All best
Thomas
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Re: [NTG-context] Problem with grid alignment and paragraph
Luca Donetti schrieb am 14.12.18 um 22:14: Dear list, I am facing a problem with grid alignment when using paragraphs. I think it could be a bug because the MWE below produces lines which are correctly aligned to the grid with the context version included in texlive 2017, but it does not seem to work with the context in texlive 2018 and the current beta (ConTeXt ver: 2018.12.07 19:37 MKIV beta fmt: 2018.12.14). This is the MWE: \setuplayout[grid=yes] \defineparagraphs[twocols][n=2] \showgrid \starttext \starttwocols \input knuth \nexttwocols \input knuth \stoptwocols \stoptext Am I doing anything wrong? If not, I'll appreciate any suggestion or workaround. https://tex.stackexchange.com/questions/468711/context-defineparagraphs-aligned-to-grid/ Wolfgang ___ 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 ___
