10.15.1 Top new questions this week

10.15.1.1 How to reduce the left-padding of a table cell?
10.15.1.2 Recursive macros revisited
10.15.1.3 Distorted QR code generated using \qrcode
10.15.1.4 Store environment's body in LUA string
10.15.1.5 Are there LaTeX issues or optimisations that could be nicely/best tackled at the font level?
10.15.1.6 Nested SplitList Problem for quick expansion
10.15.1.7 Background image behind a LaTeX/TikZ forest node
10.15.1.1 How to reduce the left-padding of a table cell?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=710143

I'm highlighting a table cell by shading it. However, the left-padding is exaggerated. How can I reduce that spacing, that leads to a larger grayed area on the left? 
\documentclass{memoir} 
\... 
[tables] [horizontal-spacing]
 
asked by Anna https://tex.stackexchange.com/landing/r/digest?cta=user&id=181633 Score of 7
answered by Sandy G https://tex.stackexchange.com/landing/r/digest?cta=user&id=125871 Score of 8
10.15.1.2 Recursive macros revisited

https://tex.stackexchange.com/landing/r/digest?cta=question&id=710324

Consider the following code 
\documentclass{article} 
\usepackage{xifthen} 
\def\question#1 #2 #3?{\ifx#1 #2 #3?\relax\else#1 #2 #3 or\expandafter\question\fi} 
\newcommand{\test}[1]{\question#1} 
\begin{... 
[macros] [formatting] [errors] [recursion]
 
asked by VaduzStevin https://tex.stackexchange.com/landing/r/digest?cta=user&id=314685 Score of 6
answered by Steven B. Segletes https://tex.stackexchange.com/landing/r/digest?cta=user&id=25858 Score of 7
10.15.1.3 Distorted QR code generated using \qrcode

https://tex.stackexchange.com/landing/r/digest?cta=question&id=710107

When I use \qrcode, the resulting QR code image has blank lines running through it, leading to difficulty of my phone reading the QR code. Does anybody know how to remedy it? I've tried pdfLatex as ... 
[qrcode]
 
asked by Coenraad van Schoor https://tex.stackexchange.com/landing/r/digest?cta=user&id=313622 Score of 6
answered by AlexG https://tex.stackexchange.com/landing/r/digest?cta=user&id=1053 Score of 7
10.15.1.4 Store environment's body in LUA string

https://tex.stackexchange.com/landing/r/digest?cta=question&id=710142

I would like to get an environment's body, store it inside a lua variable, in order to use it later in my document if needed. My code is actually working as long as I don't use any command with a } or ... 
[luatex] [environments] [lua]
 
asked by Vince https://tex.stackexchange.com/landing/r/digest?cta=user&id=293286 Score of 5
answered by Marcel KrA~\274ger https://tex.stackexchange.com/landing/r/digest?cta=user&id=80496 Score of 6
10.15.1.5 Are there LaTeX issues or optimisations that could be nicely/best tackled at the font level?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=711433

I'm currently working on a family of fonts designed for use in formal writing and optimised in particular for use in mathematics articles, books, etc., and have recently asked for input from ... 
[fonts]
 
asked by Emily https://tex.stackexchange.com/landing/r/digest?cta=user&id=171723 Score of 4
10.15.1.6 Nested SplitList Problem for quick expansion

https://tex.stackexchange.com/landing/r/digest?cta=question&id=710377

I'm thinking whether I can write a new command for quick inserting any number of small groups of vectors in vector space. Here is what I want: 
$\basis{x; u; v}$ 
will automatically resolve to: 
$x_1, \... 
[macros] [pdftex] [latex3] [xparse] [splitargument]
 
asked by Zhuoqun Chen https://tex.stackexchange.com/landing/r/digest?cta=user&id=305826 Score of 4
answered by wipet https://tex.stackexchange.com/landing/r/digest?cta=user&id=51799 Score of 5
10.15.1.7 Background image behind a LaTeX/TikZ forest node

https://tex.stackexchange.com/landing/r/digest?cta=question&id=711483

I use the forest package to draw ancestry trees. I would like to add papyrus scroll-like backgrounds to the nodes. This is the basic example: 
\documentclass[]{standalone} 
\usepackage{pgfplots} 
\... 
[graphics] [tikz-trees] [forest]
 
asked by lak20 https://tex.stackexchange.com/landing/r/digest?cta=user&id=129064 Score of 4
answered by Alan Munn https://tex.stackexchange.com/landing/r/digest?cta=user&id=2693 Score of 2