6.6.1 Top new questions this week

6.6.1.1 Difference between \hfil and \hfill

https://tex.stackexchange.com/landing/r/digest?cta=question&id=528920

I am trying to understand the difference between \hfil and \hfill. I always thought that these commands were roughly equivalent except that \hfill was "stronger" than \hfil. As a result, I thought  ... 
[spacing] [primitives]
 

asked by Andrew https://tex.stackexchange.com/landing/r/digest?cta=user&id=30471 15 votes

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 16 votes

6.6.1.2 set duo tone color of fontawesome5 duotone icons

https://tex.stackexchange.com/landing/r/digest?cta=question&id=528878

With the fontawesome5 package one now has duotones. How can i set the second color? 
\documentclass[a4paper]{scrartcl} 
\usepackage[no-math]{fontspec} 
\usepackage[pro]{fontawesome5}% 
\begin{document} 
... 
[fontawesome]
 

asked by Ronny https://tex.stackexchange.com/landing/r/digest?cta=user&id=8042 11 votes

answered by Marcel KrA~\274ger https://tex.stackexchange.com/landing/r/digest?cta=user&id=80496 10 votes

6.6.1.3 Siunitx comma as separator in unit exponent

https://tex.stackexchange.com/landing/r/digest?cta=question&id=528833

I'm writing a report in French in which I want to display units with non-integer exponents: 
\documentclass[10pt,letterpaper]{article} 
\usepackage{siunitx} 
\begin{document} 
\sisetup{locale=FR} 
... 
[siunitx] [french]
 

asked by SimonLR https://tex.stackexchange.com/landing/r/digest?cta=user&id=104695 10 votes

answered by Joseph Wright https://tex.stackexchange.com/landing/r/digest?cta=user&id=73 12 votes

6.6.1.4 Selectively "erase" lines from TikZ matrix

https://tex.stackexchange.com/landing/r/digest?cta=question&id=529059

I want to draw grids of arbitrary size using TikZ. I'm using the matrix library and I want to selectively "erase" some lines of it. I post an example of a brute-force solution: 
... 
[tikz-pgf] [tikz-matrix]
 

asked by JairoAraujo https://tex.stackexchange.com/landing/r/digest?cta=user&id=193767 7 votes

answered by SchrA~\[Paragraph]dinger's cat https://tex.stackexchange.com/landing/r/digest?cta=user&id=194703 9 votes

6.6.1.5 Has a recent update broken mathbf when using mathspec?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=528909

The following MWE illustrates code that was working until sometime over the last couple weeks. 
\documentclass{article} 
\usepackage{mathspec} 
\setallmainfonts{Times New Roman} 
\begin{document} 
... 
[xetex] [fontspec] [mathspec]
 

asked by mrclary https://tex.stackexchange.com/landing/r/digest?cta=user&id=35636 7 votes

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

6.6.1.6 Piecewise Function in tikzpicture

https://tex.stackexchange.com/landing/r/digest?cta=question&id=529068

I'm trying to create a piecewise plot in tikzpicture. Trying to emulate the example from this answer Plotting a piecewise function didn't work for me, and I don't understand why this code isn't  ... 
[tikz-pgf] [graphs]
                                                                                  

                                                                                  
 

asked by Nico https://tex.stackexchange.com/landing/r/digest?cta=user&id=192246 6 votes

answered by SchrA~\[Paragraph]dinger's cat https://tex.stackexchange.com/landing/r/digest?cta=user&id=194703 10 votes

6.6.1.7 pdflatex vs. lualatex: Libertinus and overline vs. bar

https://tex.stackexchange.com/landing/r/digest?cta=question&id=528704

I understand that I am supposed to use \bar instead of \overline in math mode, if I want the respective character to mean "something different", because \bar is actually an accent (similar to \dot, a  ... 
[math-mode] [luatex] [accents] [unicode-math]
 

asked by nagmat84 https://tex.stackexchange.com/landing/r/digest?cta=user&id=47156 6 votes

answered by Will Robertson https://tex.stackexchange.com/landing/r/digest?cta=user&id=179 0 votes