Questions tagged [directlua]
The directlua tag has no usage guidance.
79
questions
2
votes
1
answer
79
views
Define strings representing macros in lualatex
I am using trying to define a variable in LuaLaTeX which holds a string representing a macro. The idea is (eventually) to pass that string to a tex.print and have the macro called. For example:
\...
- 143
0
votes
0
answers
56
views
Compiling multi-script unicode LaTeX documents
I'm trying to write a latex document that supports arbitrary utf-8 encoded scripts. This is turning out to be surprisingly difficult. A key point is that I want to get this working without specifying ...
- 101
4
votes
2
answers
182
views
End Punctuation Checking using LuaLaTeX (like Reg-Ex)
I have need to check each paragraph ending end-period(.) is available or not. If missing need to put end-period LaTeX code \textcolor{red}{.}
As per Automatically adding space before punctuation in ...
- 143
0
votes
0
answers
35
views
Linenumbers include title, author using lualatex
I have got proper linenumbers in the twocolumn mode, except title and authornames . I have using LuaLaTeX Version 1.17.1. How to get auto linenumbers include all the texts(like title, author etc...). ...
- 143
2
votes
0
answers
61
views
How to inject \directlua expansions back into TeX files
Is there a simple way (i.e. a flag to latexmk) to preprocess a source TeX file with LuaLaTeX, so that I get back the same source with just the invokations to \directlua expanded?
My usecase is that I ...
- 97
11
votes
1
answer
231
views
What is \directlua0{} vs \directlua{}
The title is the question. According to the LuaTeX manual, command \directlua{code} may have a 16-bit number between the command and the code, and I have seen \directlua0{code} here and there. But I ...
user287367
4
votes
1
answer
67
views
In LuaLaTeX can I issue a LoadClass from a lua script invoked from a "user" class file?
LuaLaTeX: The desire is to maintain some parameters in a lua script and, from these, amongst other things, construct a \LoadClass statement which can be invoked from one's own class file.
I can get ...
3
votes
1
answer
184
views
Breaking equation with LuaLaTeX
The following code works as expected. It breaks mathematics expression in multi-lines.
\documentclass{article}
\usepackage{breqn}
\begin{document}
\begin{dmath*}
f(1.02) + f (1.06) + f (1.1) + f (1....
- 1,789
3
votes
1
answer
117
views
Issue with new command in center environment using direct lua
\documentclass{article}
\usepackage{luacode,xkeyval}
\makeatletter
\define@key{someop}{a}{\def\mop@one{#1}}%
\setkeys{someop}{a=0}%
\newcommand{\luaTest}[2][]{{%
\setkeys{someop}{#1}%
\directlua{%
...
- 1,789
0
votes
0
answers
50
views
LuaTex (?): Get access to the different layers of a glyph \char<No>
ExampleFontWithLayers01.zip (should be \char0)
Sometimes a glyph is composed of different layers.
Random example:
But a command of type \char[layer=2]"1F0AE is not available at the moment.
Is ...
- 9,107
2
votes
1
answer
55
views
Throwing warnings inside \directlua
I'm trying to issue TeX warnings from within \directlua with accurate line numbers (pointing to the offending line in the .tex document).
When I compile the MWE below with lualatex, \TestTex issues a ...
- 2,301
0
votes
1
answer
303
views
[\directlua]:1: ')' expected near <eof>
In most cases I get this error: [\directlua]:1: ')' expected near .
I want to calculate
\Abs{((\bx-\ax)*(\cx-\ax)+(\by-\ay)*(\cy-\ay))/(809.55841)} and then round up
\documentclass[margin=1cm]{...
- 95.9k
0
votes
1
answer
65
views
LuaLatex: create tabularx with multiple direclua
I'm using LuaLatex to create a tabular, but it work only if the entire tabular is created inside a single directlua.
Why does the former work but not the latter ?
This work
\directlua{
tex.print(&...
- 15
2
votes
5
answers
260
views
obtaining a substring with \directlua when original string contains %-character
I want to implement in LaTeX a sort of function with two parameters
a String containing a percentage e.g. "3.20 %"
an integer, e.g. 2000
The result should be the product of both numbers (in ...
1
vote
1
answer
216
views
TikZ---reading coordinates from an external file
I am trying to draw a picture with inputs from a bunch of csv files.
Let's take the case where the content of the file is a simple tuple of floats:
>>> cat coords/right_corner.csv
8....
- 252
4
votes
1
answer
125
views
Issue with percent signs in luacode (LuaLaTeX)
My example doesn't work at this location string.find(s:sub(1, 1), "%a").
How to fix it?
MWE:
% !TeX program = lualatex
% !TeX encoding = utf-8
%===============================================...
- 1,172
4
votes
1
answer
181
views
Understanding implicit error on a recursive function
I was originally following the idea from Garrick Peschke
To import all .tex files inside a folder, but I want my Lua function to also search inside subfolders.
Unfortunately I can't make the Lua ...
- 45
0
votes
1
answer
39
views
Pgfkeys .code and \directlua problem
Comment the 2 lines alternativelly, one works the other doesn't :
\documentclass{beamer}
\begin{document}
\pgfkeys{/Baq/.cd ,
nb/.default = 10,
nb/.store in = \nb,
nb,
contraintes/....
- 17k
0
votes
1
answer
125
views
[\directlua]:1: invalid escape sequence - a no \string solution please
I have to pass different strings from latex to lua as arguments.
I have a solution for an argument in a command, but in case of pgf keys, it seems not working. Use \string is not suitable, if it looks ...
- 17k
2
votes
1
answer
62
views
Why is `tex.sprint` deferred when handling `process_input_buffer`?
%!TEX program=lualatex
\documentclass{article}
\begin{document}
\def\specialRead{\directlua{
luatexbase.add_to_callback('process_input_buffer', function (line)
if line:find('^\\...
- 411
1
vote
1
answer
223
views
Drawing 2d and 3d vectors using lua or luamplib in LaTeX
Here is the tikz code using which vectors can be drawn.
\documentclass{article}
\usepackage{tikz}
\usepackage{tikz-3dplot}
\usepackage{amsmath}
\begin{document}
\tdplotsetmaincoords{60}{120}
\begin{...
- 1,789
1
vote
1
answer
170
views
How can I get babel to use a fallback font when a special character is missing from the main font?
Sometimes there is a character in my text that is not in the main font, such as Chinese characters or emojis, etc. and I do not want to constantly modify this in the text with various commands to ...
- 67
1
vote
1
answer
127
views
Pass string with escape characters and comma through xkeyval package while compiling the document with LuaLaTeX
The following is the code of the file temptest.sty
\ProvidesPackage{temptest}
\RequirePackage{amsmath,amssymb}
\RequirePackage{xkeyval}
\RequirePackage{luacode}
\begin{luacode*}
function myfunc(m,n)
...
- 1,789
1
vote
2
answers
56
views
Alignment Gets changed in tabular environment on adding argument in lua function on compiling with LuaLaTeX
The following code works and gives expected output with expected alignment.
\documentclass{article}
\usepackage{luacode}
\begin{luacode}
function myfunc()
str2=[[$1$ & $2$ & $3$ & $4$ &...
- 1,789
0
votes
1
answer
44
views
macros avoid linebreak if macro expands to nothing
I know this one is quite similar to this post (from me). But even with using % all over the place and \ignorespaces there is still a linebreak.
See my mwe: (main2.tex)
\documentclass{article}
\...
- 607
2
votes
1
answer
357
views
How do you select individual end alternate/swash characters with LuaLaTeX and fontspec?
Basic Problem Statement
I would like to enable some (but not all) stylistic alternate ".end" characters from an OpenType font, on condition that they replace terminal characters in a word.
...
- 123
1
vote
1
answer
360
views
Table CHAR alignment in XML
I have successfully loaded XML in LuaLaTeX with XML-Tables based on this example
Count Number of Columns in XML.
I have need the table alignments from tbody instead of thead. And how to define ...
- 2,282
1
vote
1
answer
73
views
Figure Text in same Document with Anchor Tag
I had referred this link: Create Separate File using LuaLaTeX
But i have need in the same document.
I would like to give anchor tags in the figure caption and move the figure caption text in the top ...
- 2,282
1
vote
1
answer
163
views
Can I make a macro behave like \numexpr?
For example I define \fpeval in Plain LuaTeX:
\begingroup
\catcode`\%=12
\directlua{
function math.round_int ( x )
return x>=0 and math.floor(x+0.5) or math.ceil(x-0.5)
end
function ...
- 1,336
2
votes
2
answers
225
views
\let\mySection\section with directlua
Next lualatex MWE emulates \newcommand\mySection{\section} on the lua side.
% !TEX TS-program = lualatex
\documentclass{article}
\begin{document}
\directlua{
token.set_macro('mySection', '\\section')...
- 856
0
votes
1
answer
52
views
Fixing error during collection of all boxes
i tired the code from this answer to arrange images loaded by includegraphics but got some errors i can not fix. the following code
module(...,package.seeall)
local function get_boxes(parent)
local ...
- 2,889
3
votes
1
answer
109
views
Command calls LuaLaTeX function, backslash in argument [duplicate]
I would like to create a command that simply prints what I give to it, but through Lua. Pointless for now, but I want to expand this to a more complex use-case. I've read a few answers around here, ...
- 1,546
1
vote
1
answer
961
views
Use unicode COMBINING LOW LINE (U+0332) as underline
In the same vein as Using unicode "combining right arrow above" to generate vector command, I’d like to use U+0332 “ ̲” as a “graphical” alias for \underline.
I don’t know Lua, so I’m not ...
- 1,378
2
votes
1
answer
134
views
Can I make \directlua understand unicode chars like ≥, ≤, ≠, ∙, and −?
MWE:
\directlua{%
local abs=math.abs
function gcd(x, y)
if y \csstring\~= 0 then
return gcd(y, x \csstring\% y)% I would like to write "≠" instead of "~=".
else
...
- 1,336
1
vote
1
answer
241
views
Problem writing to file through \directlua in a memoir class document
Below is a minimal example of some code where the memoir class seems to collide with Lua code, executed within a \directlua command, that writes to an external file.
Can anyone help me figure out the ...
- 51
1
vote
1
answer
270
views
Syntax error in LuaLaTeX \directlua code
I have the below document that I try to compile with LuaLaTex (using the MiKTeX package).
\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=newest}
\begin{document}
\expandafter\...
- 264
4
votes
1
answer
726
views
LuaTeX: lua best coding practices
What are some of the best coding practices to follow when splitting and loading lua code from multiple external lua files, and dealing with lua code from other lualatex packages. This thought comes to ...
- 1,316
0
votes
0
answers
46
views
Unwanted spacing between text and tikzpicture caused by "non-visual" code lines
I want to show some subgraphs of a certain graph. I want them side by side and labeled.
This is what I've got:
I can't provide working LaTeX-code, since I have implemented the graphdrawing ...
- 13
3
votes
2
answers
390
views
How to pass macro arguments (#1, #2, ..) to Lua variables
This question is probably trivial, but I started exploring Lua(La)TeX a couple of hours ago so bear with me.
The MWE is the following:
test.tex:
\documentclass{article}
\directlua{require("test....
- 2,094
0
votes
1
answer
75
views
Problem using macros in directua [duplicate]
I have the following external lua script:
-- file mylua.lua
function test(input)
tex.sprint(input)
end
And the following lualatex document:
\documentclass{article}
\usepackage{luacode}
\directlua{...
- 8,235
2
votes
0
answers
107
views
Incompatibility between LuaLatex font feature and Graphite?
when I use LuaLaTeX to modify my font (for example here kerning) at the same time as Graphite, there seems to be a problem because nothing happens. Everything seems to go well when I'm not using ...
- 479
2
votes
1
answer
878
views
Define an incremental counter with Lua
I would like to receive a suggestion for this example. Really, it is more a question related to Lua scripting.
Minimal working example
\documentclass{beamer}
\directlua{dofile("timer.lua")}
...
- 424
2
votes
1
answer
520
views
MathML Format XML in Lua
I have successfully loaded XML in LuaLaTeX. But how to load MathML. Any Lua Modules are available?
My LaTeX file:
\documentclass{article}
\usepackage{luacode}
\begin{luacode*}
xml = require('luaxml-...
- 149
2
votes
1
answer
119
views
Importing luaqd library in LuaTeX
I am looking for easy way to importing lqd or some other similar library in LuaTeX so that It can used in LaTeX. The lmapm library is wriiten by Luiz Figueiredo, one of the authors of the Lua ...
- 1,789
5
votes
2
answers
1k
views
Incorrect value of Pi in Lua after 16th Decimal Place
The following is the code.
\documentclass{article}
\usepackage{luacode}
\begin{document}
\luaexec{tex.sprint(string.format('\%.20f', math.pi))}
\end{document}
It gives the output as
3....
- 1,789
1
vote
1
answer
152
views
Setting Environment while defining complex numbers in LuaTeX
My question is inspired from this question that I asked earlier. Here is the code.
\documentclass{article}
\usepackage{parskip,luacode}
\begin{luacode*}
M = {} -- the module
complex = {} -- ...
- 1,789
2
votes
1
answer
751
views
Evaluating Mathematical Expressions in Lua
Here is the code.
\documentclass{article}
\begin{document}
\directlua{tex.sprint(tostring(math.sin(math.pi)))} \\
\directlua{tex.sprint(tostring(math.tan(math.pi/2)))}
\end{document}
I am expecting ...
- 1,789
4
votes
1
answer
166
views
Trouble while giving input from tex.sprint function to another function in LuaTeX
I have the set.lua file with the following code.
local Set = {} --module
local mt = {} --metatable
function Set.new (l)
local set = {}
setmetatable(set, mt)
for ...
- 1,789
2
votes
1
answer
257
views
Error when Metatable is set for global environment in Lua LaTeX
I have the set.lua file with the following code.
local Set = {} --module
local mt = {} --metatable
setmetatable(_G,{__index=function(t,k) return k end})
--some functions
return Set
...
- 1,789
3
votes
1
answer
158
views
siunitx table, formatting \directlua{} ouput
I have a table with values calculated with \directlua{}.
They are formatted with siunitx columns.
I want to turn some values bold or change their color.
It appears that the output of \directlua{} ...
- 121