Questions tagged [lua]
Lua is a powerful, fast, lightweight, embeddable scripting language.
0
votes
0answers
34 views
Surprisingly the following is false : {}=={} [on hold]
I wish to test when a table is empty with list=={}, but it failed !
"Stupid" example :
i=1
repeat
list[i]=nil
i=i+1
until list=={}
How shall I test when my list is empty ?
2
votes
1answer
74 views
Using ODT styles in a reference template to format make4ht
Following my recent question Customizing ODT output from mk4ht oolatex and a improved process alternative described here: Use ODT Template for make4ht (which makes use of direct formatting by using ...
7
votes
0answers
205 views
Convert all all-caps words to small caps #2
A question very similar to mine was asked before, but I assume that there are others with the same issue and that there are other solutions. I know several academic publishers that don't like ...
0
votes
0answers
44 views
Can't execute jar from directory with umlaut
Okay so this is quite an exotic question and I am unsure whether it really fits on this page. But as it involves LaTeX I'll post it here.
I have written a Java program that I am calling from inside ...
0
votes
0answers
66 views
Custom Lua feature for CID-keyed font
fonts.handlers.otf.addfeature in luaotfload can be used to create custom features for fonts.
The unicode values of glyphs can be used for CID fonts in the same way as for GID fonts, but some fonts ...
1
vote
1answer
69 views
LuaLaTeX set a path in lua
I have defined a command
\newcommand{\mypath}{/Documents/Myfile/additionalresources/}
that contains the path to some external files that I need in my main file. I need to use the \mypath command to ...
2
votes
1answer
284 views
Collect numbers a,b and c from equation $ax^2+bx+c=0$ with lpeg (luatex)
This is my first attempt to create macro with luatex. the macro \solveq to solve quadratic equation ax^2+bx+c=0 here my code
\documentclass[12pt]{article}
\usepackage{amssymb}
\usepackage{luacode}
...
4
votes
2answers
99 views
Insert LaTeX code at line break
Is there a way to insert arbitrary (La)TeX-code at the line break of a typeset line?
I am aware that this isn't really possible with (La)TeX as such. But looking at all the interesting chickenize-...
2
votes
0answers
101 views
Lua Table or XML as Bibliography File in LuaLaTeX
According to the ConTeXt Wiki in ConTeXt you can use the bibtex format for bibliographies but are not limited to that filetype. Since lua and XML are a little more universal but i can‘t (yet) switch ...
2
votes
0answers
117 views
Set global non-ligature kerning with selnolig
Similar to this question I want to use selnolig but I don't like the fact that in words containing fl without ligature these two letters are too close together.
Like in Mico's answer I want to use ...
1
vote
1answer
67 views
TeXShop console (not log) contains entire LuaLaTeX file
I tried the example of "von" in the post
Is direct utf8 input of combining diacritics in math mode possible with lualatex?
regarding the use of a Lua script to allow TeX commands for combining ...
6
votes
1answer
130 views
Implement a job queue in LuaLaTeX
I have a project depending on LuaLaTeX where the main document first generates one or more intermediate .tex files and then invokes lualatex in a loop to generate the final PDF results. This can ...
4
votes
1answer
54 views
Setting page attributes of every page in a generated ConTeXt file
I'm trying to inject page metadata into a PDF generated with ConTeXt so that the pages have their tabbing order set to use the document structure (for accessibility checks).
Currently, I can inject ...
3
votes
2answers
76 views
Included lilypond files being processed by lualatex can't contain % symbol comments
My MWE below shows two files working together to create a document containing music using the lyluatex package. Unfortunately, I've observed that if I add any comments to the contents anywhere in the ...
0
votes
1answer
51 views
How to integrate xkeyval keys with Lua code
I am currently maintaining a template that uses directlua to compute a value based on a number of parameters defined as command keys with keyval. As it stands, it compiles correctly. However, when I ...
7
votes
4answers
298 views
How can I retrieve \thepage (or detect a page change) from Lua in LuaTeX?
I am writing (contributing to) a LuaLaTeX package where a Lua function is used to generate images that are inserted in the LaTeX document.
One piece of information we need is the current page number ...
2
votes
1answer
358 views
LuaTeX error: LuaTeXbase-loader.sty
I am trying to edit my old CV with modernCV in Linux. Some missing styles and classes are not installed automatically -- so I now must try to do this manually.
Since the popular package source ctan....
5
votes
1answer
126 views
Strange ConTeXt fail to load pgf.gd.control
I'm playing with PGF's (algorithmic) graph drawing, which relies on Lua internally. I have no problems with LaTeX, but ConTeXt fails to load the package. For the simple document:
\usemodule[tikz]
\...
3
votes
1answer
69 views
How can I retrieve the current roman, sans, and mono fonts in LuaTeX
I am working on a LuaLaTeX package, and at one point I have to pass the full names of the three basic font families (roman, sans, mono) to another tool. I have found and checked that I can correctly ...
0
votes
1answer
65 views
Calling Lua on the output of a \@for loop to add “and” to the end of a comma-separated list
I'm trying to make a package-free command that applies a command across a comma-separated list, and then adds the word ``and'' to the output as is grammatically appropriate. I've already gotten some ...
12
votes
0answers
239 views
metafun: Why is the arrow tip not filled? [closed]
Trying out another example I saw that with the metafun format (luatex version) the arrow tips are no longer filled. The following document (to be compile with lualatex) shows the problem:
\...
3
votes
1answer
723 views
Do I have to install Lua in order to compile with LuaTex? Which is the best way to do it?
I've already installed TeXLive and TexMaker. Now I'm thinking of turning to LuaTeX. What are the steps I have to follow in order to start compiling with LuaTeX? Do I have to install Lua first? If so, ...
12
votes
2answers
520 views
Problem using length operator in Lua
This is my MWE:
\documentclass{article}
\newcommand{\printdata}{%
\directlua{
data = {"a", "b", "c"}
for i = 1, #data do
tex.print(data[i])
end
}
}
\begin{document}
\...
0
votes
1answer
84 views
Generate a list of QR-code with lua
I want to generate a list of digit sequences, where a part of a sequence is a counter and another one is generated depending on this counter. My MnotWE
\documentclass{book}
\usepackage{luacode}
\...
1
vote
0answers
59 views
Can't use SQL to format date in LuaLaTeX with LuaSQL & passing parameters to compiler
I am working on a LuaLaTeX example where date has to be transferred from my database using Lua and then compiled using LuaLaTeX. I am using LuaSQL to do all this and this is the minimal working ...
0
votes
2answers
113 views
How shall I launch from lualatex a lua program contained in a lua variable?
I store contents in lua variables and use them in a lualatex document. I know how to do insert that content in the TeX flow, in a macro but I don't know how to launch a lua program contained in a lua ...
1
vote
1answer
182 views
Human-readable context-free manuscript metadata [closed]
tl;dr • Would lua be a good option to process metadata stored in an external text file and output TeX fragments for use in a front matter? A minimal lua example to solve the following sub-problem ...
8
votes
2answers
2k views
My first luaLaTeX example
I am totaly inexperienced in LuaLaTeX and I don't know why but it was somehow very difficult to find working LuaLaTeX example so I can start playing around.
I finaly found the example in a document ...
2
votes
1answer
111 views
lstlisting environment inside luacode
I'd like to feed a lstlisting environment (from the listings package) with contents back to TeX from Lua, but the end of lstlisting is apparently not found. The same happens if lstlisting is replaced ...
3
votes
1answer
598 views
Error: Only one # is allowed per tab
Whenever I try processing the following code it gives the error Only one # is allowed per tab. ... .25ex\everycr {}\tabskip \z@skip \halign {##.
Can someone let me know what is wrong with it?
\...
3
votes
1answer
310 views
XML parsing and data retrieving in ConTeXt
ConTeXt provides a way of managing XML files.
The reason I approached this functionality is due to the need of being able to publish xml data in PDF to obtain catalogs or other technical ...
4
votes
3answers
236 views
Selecting a Specific Array Element in LuaTeX?
I need to create a command that goes \MyCommand{x,y} or \MyCommand{x,y,z} (both ways should be possible), where x, y, and z are three numbers. It should give the output \begin{matrix}x\\y\end{matrix} ...
4
votes
2answers
534 views
Does lua scripting entirely replace the TeX macro-definition commands & allies?
Does lua scripting in LuaTeX entirely eliminate the need to use the TeX macro-definition commands \def, \gdef, \edef and \xdef?
What about \exapndafter, \noexpand, \protected, \long and \relax?
5
votes
1answer
88 views
Automatically highlighting nominalizations (a.k.a. zombie nouns) as a writing aid
To improve my writing, I want to reduce the number of nominalizations (a.k.a. zombie nouns) that I use. For that purpose I would like to have all nominalizations automatically highlighted in the ...
10
votes
1answer
174 views
Call a (luatex-)combo font through NFSS
After some struggles I found a way to call a combo-font (which combines glyphs from two fonts) so that I can get various font sizes.
Has anyone an idea how one could inject this code (or other code ...
9
votes
2answers
524 views
LuaTeX C API as Lua C API
I'm writing a Lua Module for LuaLaTeX.
Does a LuaTeX C API exist?
For example, how can I use the C version of tex.print into my C code?
Thanks in advance
14
votes
2answers
341 views
Fill a lua table with lowercase/uppercase pairs.
I would like to add the Letters=Uppercase option to a font which hasn't the needed open type feature built in.
This is (with lualatex) possible like this:
\documentclass{article}
\directlua
{
...
5
votes
1answer
196 views
How to redefine caption in KOMA-Script to captionbeside?
While experimenting with KOMA-Script's features I have found captionbeside. That's a really great option for me as I want my captions to be formatted this way. The only problem is that in a long ...
26
votes
3answers
4k views
Why should I be interested in Lua?
I have been using LuaLaTex since I got acquainted with TeX, because it can easily work with system fonts, which I really need. Font packages in TeX are not friends of the Russian language, though ...
5
votes
1answer
158 views
How to print a verbatim block at its end automatically in LuaLaTeX?
This is a follow-up question to this answer by Mico. I try to adjust his Lua code to my needs and line numbering already works.
Actually there is one real usability issue and that's my question: How ...
4
votes
2answers
238 views
Order list of names with Lua
I want to define a command using \directlua that looks something like:
\sort{c, b, a}
and outputs a, b, c to the document.
1
vote
0answers
191 views
Create external file (like a Makefile) whit real tabs using LaTeX and Lua code
I'm trying to generate a external Makefile (and others) file using latex and the filecontents or fancyvrb package. As the \t (tabs) characters in input file are converted to space in output file (see ...
5
votes
2answers
261 views
Code Comment in directlua
How can I add comments to my directlua code?
{\catcode`\%=12
\directlua{
function boxed (s)
??? Add a comment ???
if not(boxedflag) then
i=string.find(s,'^!!!')
if(i==1) then
boxedflag=true
...
2
votes
1answer
105 views
Is it possible be use directlua substitutions inside listings environment?
is it possible to insert a directlua substitution inside a listings environment?
for example -
\begin{luacode}
a=math.random()
b=math.random()
\end{luacode}
\begin{listings}
if(\...
4
votes
0answers
131 views
Bake LuaSQL into luatex binary on Windows
Further to this question, I want to build luatex on Windows with the LuaSQL library baked in, at least with the ODBC drivers.
This post by Taco Hoekwater back in 2010 walks through the process for ...
5
votes
0answers
328 views
How to install LuaSQL for Lua(La)TeX on Windows with MikTeX [closed]
I would really like to be able to pull data directly from ODBC databases into LuaLaTeX and it seems as if the LuaSQL package is the way to go. But for the life of me, after a couple of days of trying, ...
5
votes
1answer
211 views
Write to aux file directly from lua
Is it possible to write to the aux file directly from within a \directlua command?
I am converting an older package to LuaLaTeX, which at some point builds a large string and writes it to the aux ...
3
votes
1answer
79 views
Custom spacing and TikZ
Using a solution to adjust spacing in my document with LuaLaTeX, I run into the problem, that the semicolons are also replaced in a TikZ environments:
MWE:
\documentclass{scrbook}
\usepackage{tikz}
...
4
votes
1answer
284 views
Obtaining the name of an undefined control sequence in LuaTeX
I want to implement something similar to \detokenize as a Lua function. But there is one case where I am prevented from accomplishing my goal.
\directlua{tex.sprint("[" .. token.get_next().csname .. "...
3
votes
1answer
408 views
hyperref error : ! Argument of \@providesfile has an extra }
Using a solution to adjust spacing in my document with LuaLaTeX, I run into this cryptic error, as soon as I use \label{} in a math environment:
(c:/texlive/2016/texmf-dist/tex/generic/oberdiek/se-...
