Hey there,
I love how I can use Unicode in Julia programming. When trying to write my report about my work I encountered a problem, though. Regular LateX is not compatible with Unicode characters.
This is not a problem in equations as you can use \alpha and such but this doesn’t work properly with
code embedded through listings or minted.
Luckily there is a fix for people who don’t want to give up and
stop using Unicode characters while coding.
This is a report of what I did to make it work and I hope it will
be helpful to others in the future.
-
Change LateX Engine
The standard LateX engine pdfLateX is not capable of having Unicode in your .tex file.
A more recent engine that can do this is LuaLateX or XeTeX.
I chose LuaLateX. ( You can set this in the settings of your LateX editor) -
Change Font encoding / Language packages
Instead of using:
\usepackage[utf8]{inputenc}
\usepackage{babel}
use:
\usepackage{fontspec}
\usepackage{polyglossia}
which are more recent implementations. You also need to set a font that
has all the characters you want to use. For example:
\setmonofont{DejaVu Sans Mono}[Scale=MatchLowercase] -
Install Minted
This package uses a python library called Pygmentize to proberly set the code.
To make this possible it needs to be allowed to call Python in the first place.
For this add –shell-escape as a flag to LuaLateX in the settings of your editor.
You will probably also need to install Pygmentize as well. See the documentation of minted. -
\usepackage{unicode-math}
This allows you to write unicode characters within math equations. -
Have fun with it:
Here is a minimal working example:
\documentclass[12pt,a4paper]{scrartcl}
\usepackage{fontspec}
\usepackage{polyglossia}
\setmonofont{DejaVu Sans Mono}[Scale=MatchLowercase]
\usepackage{minted}\usepackage{latexsym,exscale,stmaryrd,amsmath,amssymb}
\usepackage{unicode-math}\begin{document}
\begin{minted}{julia}
function f(τ)
return π * τ
end
\end{minted}\begin{minted}{julia}
∀ ε > 0 ∃ δ > 0 : ∀x,y ∈ ℝ : ||x-y|| < ε ⇒ ||f(x) - f(y)|| < δ
\end{minted}$∀ ε > 0 ∃ δ > 0 : ∀x,y ∈ ℝ : ||x-y|| < ε ⇒ ||f(x) - f(y)|| < δ$
\end{document}
Note on entering greek letters:
If you are like me and don’t use the Caps-lock key very often.
Linux allows you to reprogram that key. You can make it change the layout to greek while the key is pressed.
So caps-lock + a creates an α.
Have fun with it!
Best,
Jonas
