4.44.1 Top new questions this week

4.44.1.1 Did Knuth's wife have a role in TeX creation?
4.44.1.2 tikz -- Snake like curves between straight lines
4.44.1.3 A simpler explanation of \clearpage
4.44.1.4 Test if Current Color is Black
4.44.1.5 Tabu very recently stopped working with color/xcolor or with fancyvrb
4.44.1.6 fontspec changes indentation of biblatex bibliography
4.44.1.7 Increasing the size of a symbol " "
4.44.1.1 Did Knuth's wife have a role in TeX creation?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=466505

I've just read on The New York Times's article on Knuth The Yoda of Silicon Valley 
that his wife, Jill, is a graphic designer. 
Did she have a role in creating Knuth's TeX computer typesetting system? 
... 
[tex-history]
 
asked by CarLaTeX https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=101651 17 votes
answered by Udo Wermuth https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=131874 10 votes
4.44.1.2 tikz -- Snake like curves between straight lines

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=466275

How do we draw a figure like this in tikz? 
I am able to draw the straight lines, but these curves are too challenging -- how to draw them nice? 
The minimal template is: 
\begin{tikzpicture} 
... 
[tikz-pgf] [tikz-styles] [tikz-arrows] [technical-drawing] [draw]
 
asked by annie heart https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=149730 15 votes
answered by marmot https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=121799 18 votes
4.44.1.3 A simpler explanation of \clearpage

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=464793

I have read the manual, so am not trolling here. I REALLY don't understand the use of \clearpage. Especially, its difference with \newpage. A common explanation is that it "flushes" all pending floats  ... 
[page-breaking]
 
asked by mandresybilly https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=106159 14 votes
answered by Fran https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=11604 22 votes
4.44.1.4 Test if Current Color is Black

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=466026

The MWE below does exactly what I want via the \TypsetInBlueOnlyIfCurrentColorIsBlack macro: 
\TypsetInBlueOnlyIfCurrentColorIsBlack is intended to change the color of its parameter to blue, only if  ... 
[color]
 
asked by Peter Grill https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=4301 10 votes
answered by egreg https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=4427 6 votes
4.44.1.5 Tabu very recently stopped working with color/xcolor or with fancyvrb

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=466147

Below is a MWE with a tabu table that compiled perfectly fine up until I updated packages today (Dec. 16, 2018) with TeX Live Utility. 
\documentclass[11pt]{article} 
\usepackage{amsmath} 
... 
[color] [tabu] [colortbl]
 
asked by Andrew Patrick Turner https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=98012 9 votes
answered by Frank Mittelbach https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=10109 7 votes
4.44.1.6 fontspec changes indentation of biblatex bibliography

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=466036

MWE: 
test.tex: 
% !TeX program = xelatex 
\documentclass[paper=A4,fontsize=12pt]{scrartcl} 
\usepackage{fontspec} 
\usepackage[backend=biber,style=authoryear,citestyle=authoryear]{biblatex} 
... 
[biblatex] [xetex] [koma-script] [fontspec]
 
asked by Young Un https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=177864 9 votes
answered by gusbrs https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=105447 8 votes
4.44.1.7 Increasing the size of a symbol " "

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=466594

I'm using LyX, and I'm trying to create a large |, as shown in the following image: 
If I'll use: 
G=\left\{ \begin{pmatrix}t & 0\\ 
0 & \frac{1}{t} 
... 
[lyx]
 
asked by vesii https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=175309 8 votes
answered by Bernard https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=38908 10 votes