8.67.1 Top new questions this week

8.67.1.1 Why changing the catcode of : cause epsfbox to fail?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=661751

I have the following very simple TeX file: 
\input epsf 
\catcode`\:=\active\def:{\thinspace\string:} 
a: b 
\centerline{\epsfbox{test.1}} 
\bye 
with test.mp containing 
beginfig(1); 
draw (0,0) -- (100,... 
[plain-tex] [eps] [metapost]
 

asked by user989070 https://tex.stackexchange.com/landing/r/digest?cta=user&id=282907 Score of 10

answered by wipet https://tex.stackexchange.com/landing/r/digest?cta=user&id=51799 Score of 6

8.67.1.2 Exercise in computation with macros: expansion not working as expected

https://tex.stackexchange.com/landing/r/digest?cta=question&id=661892

I'm studying macros and, as an exercise, I wanted to compute the successor of a number, represented as text, in binary, little endian (lsb first). 
After big effort I devised this: 
\def\finish#1\relax{#... 
[macros] [expansion]
 

asked by user9137 https://tex.stackexchange.com/landing/r/digest?cta=user&id=13745 Score of 9

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

8.67.1.3 Using LaTeX/TikZ for fractal flower

https://tex.stackexchange.com/landing/r/digest?cta=question&id=661409

I am trying to generate this particular fractal image of a flower, but don't even know where or how to start. Can TikZ be used to generate a "Phylotactic spiral"? 
I saw it here:https://www.... 
[tikz-pgf] [fractals]
 

asked by Ginko-Mitten https://tex.stackexchange.com/landing/r/digest?cta=user&id=279451 Score of 9

answered by Qrrbrbirlbel https://tex.stackexchange.com/landing/r/digest?cta=user&id=16595 Score of 24

8.67.1.4 Bad spacing with newtx?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=661768

I have a problem with spacing. I think the problem comes from the package newtx. 
Here is a MWE: 
\documentclass{article} 
\usepackage[utf8]{inputenc} 
\usepackage[T1]{fontenc} 
\usepackage{newtxtext} 
\... 
[spacing] [newtx]
 

asked by Didier https://tex.stackexchange.com/landing/r/digest?cta=user&id=249670 Score of 7

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 6

8.67.1.5 Drawing an angle between two vectors?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=661479

I want to draw an angle between two vectors: 
\documentclass{article} 
\usepackage{tikz} 
\usetikzlibrary{angles,quotes,babel,plotmarks} 
\usetikzlibrary{decorations.pathreplacing} 
\usetikzlibrary{calc} 
\... 
[tikz-pgf] [tikz-pic]
 

asked by Vertexwahn https://tex.stackexchange.com/landing/r/digest?cta=user&id=80285 Score of 6

answered by Jasper Habicht https://tex.stackexchange.com/landing/r/digest?cta=user&id=47927 Score of 5

8.67.1.6 LaTeX3 macro identification in TeXstudio

https://tex.stackexchange.com/landing/r/digest?cta=question&id=662123

The LaTeX3 syntax is not recognized by TeXstudio, and I'm looking for ways to solve it. 
The problem comes from (IMHO) the underscores being taken as "separators"... 
Here is an example: 
The ... 
[texstudio] [expl3] [syntax-highlighting]
 

asked by 3isenHeim https://tex.stackexchange.com/landing/r/digest?cta=user&id=28926 Score of 5

8.67.1.7 Recommended way to pass all command arguments as a list

https://tex.stackexchange.com/landing/r/digest?cta=question&id=662050

I have been going from thread to thread for a while and I still cannot wrap my head around my problem. 
I want to do something that I thought would be basic; declare an "inner product" ... 
[macros]
 

asked by Aubergine https://tex.stackexchange.com/landing/r/digest?cta=user&id=221346 Score of 5

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 4