11.44.1 Top new questions this week

11.44.1.1 Is there a TECkit equivalent in LuaTeX?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=747009

XeTeX uses TECkit map files as a regular grammar to derive output character words from input character words. For example: 
U+0021 U+0060   <>  U+00A1  ; 
produces a Spanish inverted exclamation ... 
[xetex] [luatex] [grammar] [teckit]
 

asked by yannis https://tex.stackexchange.com/landing/r/digest?cta=user&id=18645 Score of 8

answered by Javier Bezos https://tex.stackexchange.com/landing/r/digest?cta=user&id=5735 Score of 9

11.44.1.2 Where and why does LuaLaTeX imports the lualibs libraries?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746988

Consider the following MWE demonstrating that when compiling with LuaLaTeX there is no need to require("lualibs").  Where in the sources are these libraries loaded and why? 
\documentclass{... 
[luatex] [lualibs]
 

asked by yannisl https://tex.stackexchange.com/landing/r/digest?cta=user&id=963 Score of 7

answered by Max Chernoff https://tex.stackexchange.com/landing/r/digest?cta=user&id=270600 Score of 7

11.44.1.3 Reference a TikZ coordinate from later in the picture

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746819

I want to clip a tikzpicture to a shape that is derived from a node in the tikzpicture (which should also be clipped). In order to do this, I need to know the node coordinates (for clipping) before ... 
[tikz-pgf] [coordinates]
 

asked by schtandard https://tex.stackexchange.com/landing/r/digest?cta=user&id=48973 Score of 7

answered by kabenyuk https://tex.stackexchange.com/landing/r/digest?cta=user&id=204924 Score of 10

11.44.1.4 How to*locally* expose lua code in a .sty file

https://tex.stackexchange.com/landing/r/digest?cta=question&id=747037

I want to make latex commands which run lua code. In particular, I want to know how to properly expose this lua code locally to a .sty file, so I don't have to require it in every newcommand. My big ... 
[luatex] [lua]
 

asked by Jasper https://tex.stackexchange.com/landing/r/digest?cta=user&id=319072 Score of 6

answered by Max Chernoff https://tex.stackexchange.com/landing/r/digest?cta=user&id=270600 Score of 11

11.44.1.5 Expanding macros to string

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746962

I have macros for output first char of string. 
\makeatletter 
\def\firstchar#1{\expandafter\checkfirst#1\@nil} 
\def\checkfirst#1{% 
\ifx\UTFviii@two@octets#1% 
\expandafter\gettwooctets 
\else 
\... 
[macros] [pdftex] [cyrillic] [utf8]
 

asked by LemeRus https://tex.stackexchange.com/landing/r/digest?cta=user&id=404232 Score of 6

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 7

11.44.1.6 Use foreach loop variable in path coordinates

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746902

I  have the following code: 
\documentclass{standalone} 
\usepackage{pgfplots} 
\pgfplotsset{compat=1.18} 
\usepgfplotslibrary{fillbetween} 
\begin{document} 
\begin{tikzpicture} 
\begin{axis}[% 
... 
[pgfplots] [foreach]
                                                                                  

                                                                                  
 

asked by Franz https://tex.stackexchange.com/landing/r/digest?cta=user&id=193625 Score of 6

answered by Rmano https://tex.stackexchange.com/landing/r/digest?cta=user&id=38080 Score of 4

11.44.1.7 Save old command with \let which was redefined in an environment

https://tex.stackexchange.com/landing/r/digest?cta=question&id=746795

I am writing some notes, where for brevity, I want to have a shorthand for arrows: 
\def\->{\ensuremath{\rightarrow}} 
\def\=>{\ensuremath{\Rightarrow}} 
which also improves the readability of ... 
[macros] [renewcommand]
 

asked by one too many https://tex.stackexchange.com/landing/r/digest?cta=user&id=403812 Score of 6

answered by Jasper Habicht https://tex.stackexchange.com/landing/r/digest?cta=user&id=47927 Score of 7