LuaTeX is a Unicode-capable extension of TeX which integrates the scripting language Lua. Use this tag if your question is about LuaTeX or LuaLaTeX specific problems and is not related to standard (La)TeX. For ConTeXt related questions use {context-mkiv}.

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11
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2answers
1k views

Ploting a function using mplib in lualatex

This question asked about ways to generate a nice function graph in LaTeX. There are several great answers, however, most of the either rely on an external program to generate the plot, or, if they ...
11
votes
1answer
258 views

Contextual Substitution with LuaLateX

Contextual substition doesn't seem to work with LuaLateX, while it works fine with XeLateX. Am I doing something wrong or is this a bug? \documentclass{article} \usepackage{fontspec} ...
11
votes
1answer
152 views

Accessing to .log messages from LuaTeX. Is it possible?

Reading the question How to visualize the underfull box in final ouput PDF files I thought that it could be possible to use LuaTeX to intercept the "Underfull vbox" message and draw some kind of ...
11
votes
0answers
318 views

Can't generate ligatures with LuaLaTeX under TeXLive 2014 when using certain fonts

Consider the following MWE: % !TEX TS-program = lualatex \documentclass{article} \listfiles \usepackage{fontspec} \setmainfont[Ligatures={Common,Rare}]{Hoefler Text} \begin{document} ff fi fl ffi ffl ...
10
votes
2answers
380 views

Lua calculation fails with a negative number

The macro runs except when the real b is negative. Why ? \documentclass[a4paper,12pt]{article} \usepackage[upright]{fourier} \usepackage[no-math]{fontspec} \usepackage{luacode,luatextra,luaotfload} ...
10
votes
2answers
314 views

How to put signature number in footer (derived from page number)?

To make my book easier to bind I'd like to automatically put the signature number with small type in the footer of the first page of each octavo signature (except the first one which is given since it ...
10
votes
2answers
146 views

^^M garbles my terminal output

Contrarily to pdfTeX and XeTeX, which send ^^M to the terminal for the character 13, LuaTeX sends the character 13 itself. This garbles the output of my terminal (bash under Ubuntu 10.04). ...
10
votes
2answers
136 views

The strange \luaescapestring in LuaTeX

\directlua{% local s = [[\luaescapestring{\TeX}]] print(s)} After \luaescapestring{\TeX}, I think I should get T\\kern -.1667em\\lower .5ex\\hbox {E}\\kern -.125emX then this line will be ...
10
votes
2answers
686 views

LuaLaTeX:PGFplots can't read data passed by Lua

I wanted to give a LuaLaTeX answer to this question Here it is the listing I wrote: % !TEX encoding = UTF-8 % !TEX program = LuaLaTeX % !TEX spellcheck = en_GB \documentclass{standalone} ...
10
votes
3answers
3k views

How to display the font size in use in the final output

How can I display the font size in use at a particular point of the document. For example, in the following code, I produced a PDF file showing the fonts actually used for each shape and size, ...
10
votes
2answers
607 views

Concurrently interleaving execution of Lua and TeX in LuaTeX

The usual way to interleave Lua and TeX in generating documents is by invoking Lua from Tex through the \directlua facility and generate Tex from Lua using tex.print(). For example, consider the ...
10
votes
2answers
233 views

Polyglossia and hookrightarrow

Can someone explain why there is a gap between the tail and the head of \hookrightarrow when I load polyglossia with French support ? I'm using LuaLaTeX for producing the .pdf. ...
10
votes
1answer
545 views

Availability of LaTeX packages' functionality in ConTeXt, XeTeX, and LuaTeX

I am considering trying out ConTeXt, XeTeX, and LuaTeX, but one concern of mine is the fact that I am using a large number of LaTeX packages. There are a number of questions comparing these TeX ...
10
votes
3answers
708 views

Why does hyphsubst not work with LuaTeX?

Consider the following MWE: \RequirePackage[ngerman=ngerman-x-latest]{hyphsubst} \documentclass{scrartcl} \usepackage[english]{babel} \usepackage{blindtext} \begin{document} \Blindtext ...
10
votes
2answers
305 views

Accessing side-bearings in LuaTeX

This question has been solved, in XeTeX, by this code: \def\kright#1{\leavevmode #1\kern-\XeTeXglyphbounds3 \the\XeTeXcharglyph`#1 } \def\kleft#1{\leavevmode \kern-\XeTeXglyphbounds1 ...
10
votes
1answer
222 views

What does \luaescapestring do for us?

It seems that all TeX command are expanded into unexpandable tokens (say, TOKENS1) and these token are converted into some other tokens (say, TOKENS2). For example \directlua{ local var = ...
10
votes
2answers
315 views

\ifpdf returns true when using LuaLaTeX

The ifpdf package is supposed to detect if pdfTeX is running: This package looks for pdfTeX in pdf mode and implements and sets the switch \ifpdf. (from the ifpdf documentation) However, when I ...
10
votes
1answer
313 views

Convert color name to pdfliteral code

How can I convert a color name (such as used with the xcolor package) to a pdfliteral code, like q 1 0 0 rg (for red)?
10
votes
1answer
470 views

When using more than 16 math alphabets, \mathtt uses italic font

I know that in TeX, you can only use 16 math alphabets but XeTeX extends this so I was curious to enlarge the number of my math alphabets and I had to redefine some internals of LaTeX. Here is my ...
10
votes
1answer
112 views

Use luatex to \let command to other

still looking for LuaTeX, I understand how I can execute Lua code insided TeX code (via \luadirect) but not how I could execute TeX code inside Lua code. I explain : I would like to make a series of ...
10
votes
1answer
252 views

Define fallback font for specific Unicode characters in LuaLaTeX

This closed question prompts me to propose a more general question and a solution I don't think has been demonstrated here. When compiling with LuaLaTeX and using Unicode input, how do you set up a ...
10
votes
1answer
357 views

LuaLaTeX for dummies: how to add LaTeX macros into \directlua?

How to make the following code to compile? \documentclass{article} \newcommand*{\mycommand}{\directlua{for i = 1, 10 do tex.sprint(i\hskip1cm) end}} %does not work ...
10
votes
1answer
239 views

How to debug METAPOST inlined in ConTeXt? (Or “message” primitive and “loggingall;” in inlined METAPOST)

I have a METAPOST program that works fine with mpost, but fails when I try to run it inline in ConTeXt. In order to debug it, I would like to see the usual METAPOST logging and/or to use the METAPOST ...
10
votes
1answer
718 views

Bad position equation number Lualatex

If a math display is too wide, then the \eqno appears on the next line on the left instead of on the right as it should. Does anyone know how to solve this problem? This is an example: ...
10
votes
1answer
754 views

XeLaTeX, LuaLaTeX different default font features

The following MWE is producing different outputs on XeLaTeX and LuaLateX: \documentclass{scrartcl} \usepackage{fontspec} \setmainfont{FoglihtenNo04-070.otf} \begin{document} ffi ew \end{document} ...
10
votes
1answer
101 views

Can LuaTeX change the PAGE-breaking algorithm

One of the often highlighted features in LuaTeX is the ability to replace the default TeX line-breaking algorithm by something else. I wonder if it is similarly possible to replace the page-breaking ...
10
votes
1answer
196 views

Cover whole page with squares arranged in a “spiral”

I'm trying to cover a whole landscape A4 paper with small squares – drawn in TikZ – starting from the bottom left corner of the page and moving towards to the center of the page in a ...
10
votes
1answer
278 views

Accessing user-selectable features in GentiumPlus in XeLaTeX/LuaLaTeX

Specifically, the combination of f plus î in the italic ends up with the upper curl of the f smashed into the peak of the circumflex (other fonts have the same problem, but the result is even uglier). ...
10
votes
3answers
567 views

uneven line spacing

This is something that is already annoying me for quite a while. (I use LuaLaTeX) The line spacing of the Arabic text is uneven (see pic and/or MWE below). In particular, I think, lines 2, 7, and 10. ...
10
votes
2answers
218 views

Can I create a node list from some text entirely within lua?

I'm playing around with luatex and learning about nodes and callbacks. What I'd like to do is be able to add some text via a particular callback. The type of callback that I'm interested in is one ...
10
votes
1answer
164 views

Antykwa Torunska font: How to get correct \hbar in LuaLaTeX

I'm using TeX Live 2014 with lualatex. Using the font Antykwa Torunska (anttor) for math, \hbar is not displayed correctly. The default LaTeX settings do not give good results at all scales: ...
10
votes
1answer
201 views

Letterspacing via microtype vs fontspec (in LuaLaTeX)

I've just realised that I can get somewhat similar letterspacing effects using either the microtype or fontspec packages; for example: \documentclass{article} \usepackage{fontspec} ...
10
votes
1answer
1k views

Integral limits with amsmath in LuaLaTeX

Also reading the thread about Making integral ∫ use \limits by default with unicode-math I'm not quite happy with the solution. With pdfLaTeX I use the code \documentclass{article} ...
10
votes
3answers
2k views

Replacing greek glyphs in math mode

I want to switch fonts, away from computer modern. I'm pretty sure that I will end up with a mixture of fonts. I can't provide a full list of required features, but Linux Libertine's feature set ...
10
votes
1answer
227 views

querying whether a font feature has been activated via a fontspec command

A LaTeX package I'm currently writing makes use of -- and definitely requires -- some of the power of LuaLaTeX. I would like to make my package's user interface -- in particular, the options that need ...
10
votes
2answers
720 views

Do XeTeX and LuaTeX always use Unicode?

I am writing some functions to manipulate strings. A typical way to produce a character with a given character code is the \lowercase primitive. The following code produces a character with code 234, ...
10
votes
1answer
93 views

LuaTeX hpack_filter callback not triggering on certain hlist creations

EDIT: The hpack_filter is triggered and my question pointless. Consult my answer on why I missed the callback invocation. I am using LuaTeX to analyze the creation process of math expressions in a ...
10
votes
1answer
98 views

assign penalty to one discretionary (not all paragraph)

For a quite complex problem that would be too long to describe, I need to set different penalties for different discretionaries in the same paragraphe. It doesn't seem to be possible with pdfTeX (and ...
10
votes
1answer
414 views

ledpar: Get rid of any space between paragraphs while retaining the synchronization of the pagecontents

My question: Is there a way to simply get rid of any space between the paragraphs of ledpar- while retaining the pagesynch? (I understand that synchronizing paragraphs is a feature of ledpar, put I ...
10
votes
0answers
196 views

How to pass a LaTeX argument verbatim to lua?

I would like to pass an argument verbatim from LaTeX to lua including LaTeX commands and end of line characters. The example below takes care of the former issue, but not of the latter. Is there a ...
10
votes
0answers
173 views

Why does fake slant only seem to work after italics has been used? [closed]

Based on this question, can someone explain this behavior: \documentclass{article} \usepackage{fontspec} \setmainfont[ SlantedFont={Linux Libertine O}, SlantedFeatures={FakeSlant=0.30}, ...
9
votes
4answers
407 views

Patch font with LuaTeX

I don’t like the spacing of \textperiodcentered = U+00B7 in the OpenType cut of Latin Modern. Different from Computer Modern—and in fact, from just about any font I have on my system—LM gives the ...
9
votes
3answers
415 views

Fixing fonts with LuaTeX feature files

Bringhurst urges us in Chapter 10 of The Elements of Typographic Style: Version 4.0 to fix the font files if needed. See below a summary of the chapter using the section titles. Bringhurst suggests ...
9
votes
3answers
272 views

Using \input|texlua… to emulate \directlua in pdfTeX

When --shell-escape is enabled, pdfTeX allows to run external programs and input the result expandably with \input|"...". Together with the Lua interpreter texlua, this could be used to provide a ...
9
votes
2answers
998 views

British hyphenation with either xelatex or lualatex

For several reasons, I am working on a source file that should be compilable by either xelatex or lualatex. I would like British hyphenation for the text and am using csquotes and biblatex with ...
9
votes
1answer
264 views

Is it possible to use Lua to obtain the current working directory?

Package currfile with the abspath option can obtain the absolute path of the current file. However, it relies on running pdflatex with the -recorder flag. Would it be possible to achieve the same ...
9
votes
2answers
232 views

Selectively disable dash ligatures in LuaLaTeX

With pdfLaTeX, I can print two hyphens using -{}-. This does not seem to work in LuaLaTeX. Indeed, the following snippet \documentclass{minimal} \begin{document} en dash -- two dashes -{}- ...
9
votes
2answers
346 views

LuaLatex: How get ascii text from paragraph, change it and render again

Is possible to render paragraph in LuaTeX -> get ascii text with hyphenation -> put back text and render again? I have simple text: "Lorem ipsum dolor sit amet, conse... laborum." I need get this ...
9
votes
2answers
648 views

tabular numbers in tables, proportional in text

I'm using LuaTeX with a font that has proportional, lining and tabular numbers available. Is it possible to set things up so tables automatically use tabular numbers - but proportional numbers are ...
9
votes
2answers
844 views

Is lualatex supposed to be a superset of pdflatex? (regarding production of PDF)

In other words, is it a bug if lualatex cannot compile a document that pdflatex can? Based on the answers to this question How to expand TeX's "main memory size"? (pgfplots memory ...