macros
Say I've redefined some command
\renewcommand{\oldcommand}{\newcommand}
If I want to use this new command everywhere in my LaTex document except for once or twice, where I need to make use of the old command, is there a way to use the old command, without getting rid of my \renecommand statement?
This is a hypothetical question, so I don't have a concrete example of a document where I would need an answer to this, but I am curious.
Thanks a lot.
Thanks egreg, indeed it was \let as 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.
You have two choices; which one depends very much on the application.
Remember that if you do
\newcommand{\foo}[3]{...}
then a call to \foo should be of the form
\foo{first}{second}{third}
where each argument is braced. It's not the same as in other programming language: the syntax \foo{first,second,third} would take first,second,third as #1 and TeX would look further for #2 and #3.
\documentclass{article}
\usepackage{tikz, pgfplots}
\newcommand{\myplotA}[3]{%
\begin{tikzpicture}
\begin{axis}[
xbar,
bar shift=0pt,
bar width=20pt,
xmin=0,
axis x line = none,
axis y line* = middle,
ytick={1,2,3},
tickwidth=0,
every tick/.style={draw=none},% label pos, no tick marks
yticklabels={#1,#2,#3},
]
\addplot coordinates {(2,1)};
\addplot coordinates {(5,2)};
\addplot coordinates {(4,3)};
\end{axis}
\end{tikzpicture}%
}
\newcommand{\myplotB}[1]{%
\begin{tikzpicture}
\begin{axis}[
xbar,
bar shift=0pt,
bar width=20pt,
xmin=0,
axis x line = none,
axis y line* = middle,
ytick={1,2,3},
tickwidth=0,
every tick/.style={draw=none},% label pos, no tick marks
yticklabels={#1},
]
\addplot coordinates {(2,1)};
\addplot coordinates {(5,2)};
\addplot coordinates {(4,3)};
\end{axis}
\end{tikzpicture}%
}
\begin{document}
\myplotA{L1}{L2}{L3}
\bigskip
\myplotB{L1,L2,L3}
\end{document}
As you see in the picture, the output is the same.
Best Answer
There are some circumstances in which this simple approach won't work, depending on how the command you're redefining was defined initially. See: