I have a rather document in which I have globally set \renewcommand{\epsilon}{\varepsilon}. However, in one specific location I would like to use the original \epsilon. I tried \newcommand{\originalepsilon}{\epsilon} before replacing its definition with \renewcommand in the preamble, but I guess it does not work this way. What is the best way to implement this? It is a long document where I would still like the \epsilon command to invoke \varepsilon everywhere else except in this one instance.
[Tex/LaTex] Save original variable/command for invocation later
macros
Related Solutions
I don't think you really wants this. However, here it is:
\documentclass{article}
\usepackage{amsmath}
\newcommand{\xnorm}[1]{%
\mathchoice{\Bigl\|#1\Bigr\|}{\lVert#1\rVert}{\lVert#1\rVert}{\lVert#1\rVert}%
}
\begin{document}
A norm in text mode is $\xnorm{v}$, while in display math it is
\[
\xnorm{v}=\sum_{i=1}^n\lvert v_i\rvert
\]
\end{document}
The result is really ugly (and wrong):
If you change \Bigl and \Bigr with \bigl and \bigr you get a more acceptable result, but I can't see the point of increasing the fences' size.
Something like this?
Just say \newcolorcmd{category}{"Text"} and you will get a new command \category which will output the corresponding text.
Basically one could also use Torbjorn T's. proposition
Using the same color for \mycolor is not encouraged however, so there should be an additional argument to the command.
\documentclass{scrartcl}
\usepackage{xcolor}
\usepackage{etoolbox}
\newcommand{\mycolor}{blue}
\newcommand{\defaultcolor}{black}
%\newcommand{\targetorg}{\mycolor "Name of organization I am applying work for" \defaultcolor}
%\newcommand{\myname}{\mycolor "my name" \defaultcolor}
%\newcommand{\job}{\mycolor "type of work" \defaultcolor}
%\newcommand{\place}{\mycolor "location of organization" \defaultcolor}
\newrobustcmd{\newcolorcmd}[2]{%
\long\csgdef{#1}{\textcolor{\mycolor}{#2}}%
}%
\newcolorcmd{job}{"Type of work"}%
\newcolorcmd{myname}{"My name"}%
\begin{document}
\job
\myname%
\end{document}
Best Answer
Thanks egreg, indeed it was
\letas was shown by example in this thread https://stackoverflow.com/questions/5845887/how-do-i-use-renewcommand-to-get-back-my-greek-letters which I did not find before.