Special LaTeX symbols

Hunting particular characters/dingbats/emoji/etc for latex?

90% of code questions on this theme can be answered by the full-length Not so short introduction to LaTeX.

There is an offline package, The Comprehensive LaTeX Symbol List which might be handy for people writing LaTeX on the go (Pakin 2021).

This document lists 18,150 symbols and the corresponding LaTeX commands that produce them.

Notionally, one can compile it using the command

texdoc symbols-a4

However, AFAICT it has exceptionally heavy dependencies and requires a more-than-comprehensive LaTeX install, and thus does not work for me. This is not enough:

tlmgr install texdoc comprehensive

Instead, I download the PDF from CTAN.

Sometimes we need to use special fonts and character encodings to get the desired effect. Life is much easier in Unicode for new projects (but beware of wacky problems with legacy projects). One of the great things about Unicode maths is that some of the special symbols problems go away, because if you can find a special symbol in the Unicode symbol list, or whatever they call it, you can use it in your document. The process to do that in class LaTeX is much more onerous — It would probably be better to import a single glyph via pifont or yagusylo.

\documentclass{article}
\usepackage{fontspec}

% these lines must come after fontspec
\newfontfamily\DejaSans{DejaVu Sans}
\newcommand\todo{{\color{red}\DejaSans 🚧}}

\begin{document}
  \todo mention {\DejaSans 😁😂😃😇😉😈😋😍😱}
\end{document}

\documentclass{article}
\usepackage{coloremoji}
\begin{document}
Hello, 🌎.
\end{document}

\textasciitilde{}
\textbackslash{}

\setminus
\backslash

\char`~