5.20.1 Top new questions this week

5.20.1.1 \ifnum expanding too much - what is happening?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=495422

Consider the following example: 
\documentclass{article} 
\makeatletter 
\newcommand\fail[1]{% 
\ifnum1=#1% <- here a space is missing 
\expandafter \@firstoftwo 
\else 
... 
[tex-core] [conditionals] [expansion]
 

asked by jakun https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=120953 10 votes

answered by egreg https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=4427 10 votes

5.20.1.2 How to correctly fill 3d figures

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=494894

I am trying to fill a 3D figure, it is a half-cylinder. However, I don't know how to correctly fill the figure because in the 2D plane the path auto-intersects. 
When I use the option fill, it results  ... 
[tikz-pgf]
 

asked by Julian VillaquirA~\[DownExclamation]https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=190659 10 votes

answered by marmot https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=121799 14 votes

5.20.1.3 Smart-expansion of a range to a list of numbers

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=494712

I am wondering if there is a simple way to expand some input text such as "3-7" as "3,4,5,6,7"? 
For context, I am using \foreach and want to be able to write 
\foreach \x in {3-7, 9, 14, 52} 
and  ... 
[foreach] [loops] [programming] [strings]
 

asked by ryanj1823 https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=186172 10 votes

answered by Phelype Oleinik https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=134574 10 votes

5.20.1.4 Football following parabola and patches of grass

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=495200

I am trying to plot a football following the parabola 
f(x) = -0.1x^2 + 2x    ,     0 <= x <= 20 
Which supposedly looks like this 
Combining the football from tikzducks with blured or faded  ... 
[tikz-pgf]
 

asked by N3buchadnezzar https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=8306 9 votes

answered by marmot https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=121799 11 votes

5.20.1.5 How do I change my LaTex document to follow some Word requirements?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=495239

I am writing my thesis in LaTex and I am strictly required to write: 
With Times New Roman 
12 pt (which I have read 12pt in Word is different from 12pt in LaTex) 
One and a half line spacing 
All the  ... 
[fonts] [spacing] [margins] [line-spacing] [dimensions]
 

asked by user190786 https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=190786 8 votes

answered by Fran https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=11604 14 votes

5.20.1.6 Remove the small black rectangle that appears at the end of environment

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=495318

I would like to correct the attached script that I was lucky enough to have it thanks to this  Post 
\documentclass[11pt,draft]{book} 
\usepackage[T1]{fontenc} 
\usepackage[utf8]{inputenc} 
... 
[environments]
 

asked by Zbigniew https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=10115 8 votes

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

5.20.1.7 How to write NAND resp. NOR operators?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=495403

I'm trying to define Boolean operators NAND and NOR, using a tilde that overlaps either a \wedge or a \vee. I can't find these in the comprehensive list of LaTeX symbols. I tried using \llap, but I'm  ... 
[math-mode] [symbols]
 

asked by Mayer Goldberg https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=2193 7 votes

answered by egreg https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=4427 8 votes