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testcase-moreenum.tex
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testcase-moreenum.tex
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\documentclass[paper=A4,fontsize=12]{scrartcl}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}
\usepackage{url}
\usepackage{etoolbox}
\usepackage{multicol}
\usepackage{listings}
\lstloadlanguages{[LaTeX]TeX} % I need to tell listings how I want code typeset. Here come some options:
\lstset{%
basicstyle=\ttfamily\small,
commentstyle=\itshape\ttfamily\small,
showspaces=false,
showstringspaces=false,
breaklines=true,
breakautoindent=true,
captionpos=t,
frame=single,
escapeinside={(*}{*)},
}
\catcode`|=\active
\def|{\lstinline|}
\usepackage{moreenum}
\usepackage{etoolbox}
\author{Seamus Bradley}
\title{\texttt{moreenum}}
\usepackage{tgpagella}
\usepackage{tgheros}
%\usepackage{tgcursor}
\usepackage[ocr-a]{ocr}
\newcounter{namespacer}
\newcommand\namespace{\the\value{namespacer}}
\newcommand\testenumerate[1]{%
\bigskip\stepcounter{namespacer}
\begin{minipage}{0.4\linewidth}
{\qquad\Large\texttt{\textbackslash #1}}
\begin{enumerate}[label={\csname #1\endcsname*.}]
\item Liberty: \expandafter\ref{\namespace}
\item Equality
\item Fraternity\expandafter\label{\namespace}
\setcounter{enumi}{41}
\item Meaning of life
\end{enumerate}
\end{minipage}
}
\newcommand\dotest[1]{%
\let\do\testenumerate
\docsvlist}
\begin{document}
\maketitle
\begin{abstract}
This package provides more enumeration styles for |enumerate| environments.
The styles are supposed to work with |enumitem|.
This is |moreenum| version 1.02.
\end{abstract}
\section{Basic procedure}
At the heart of each new enumeration is the following procedure:
\begin{lstlisting}
\newcommand*{\macro}[1]{%
\expandafter\@macro\csname c@#1\endcsname}
\newcommand*{\@macro}[1]{%
\translate{#1}}
\AddEnumerateCounter{\macro}{\@macro}{distance}
\end{lstlisting}
From a user perspective, \lstinline+\macro+ takes a counter as its
argument and outputs, say, a
binary number or whatever you want.
Actually, what it really does is turn a counter into a number and pass
the number to \lstinline+\@macro+ which does the real work.
It takes a number and translates it into the final representation.
Most of the cleverness is done by \lstinline+\translate+ and these are
mostly macros I've borrowed from other packages.
The |distance| is the widest entry in the enumeration.
|moreenum| hasn't been tested much with this parameter:
I've just guessed a bit at what's the widest enumerations are likely
to get.
Enumerations can \emph{theoretically} get up to 2147483647 items long.
Which would be rather a long number.\footnote{%
|fmcount| doesn't seem to work with numbers that big, actually.
But even 131071 is \binarynum{131071}}
The |\greek| macro is a little more involved because it involves first
defining a macro that turns numbers into Greek letters.
\begin{lstlisting}
\newcommand*{\single@greek}[1]{%
\expandafter\@single@greek\csname c@#1\endcsname
}
\newcommand*{\@single@greek}[1]{%
$\ifcase#1\or\alpha\or\beta\or\gamma\or\delta\or\varepsilon
\or\zeta\or\eta\or\theta\or\iota\or\kappa\or\lambda
\or\mu\or\nu\or\xi\or o\or\pi\or\varrho\or\sigma
\or\tau\or\upsilon\or\phi\or\chi\or\psi\or\omega
\else\@ctrerr\fi$
}
\end{lstlisting}
Then you need to define what to do when you run out of letters.
You start again at $\alpha\alpha$.
The clever work there is done by the |alphalph| package.
\begin{lstlisting}
\newalphalph{\@greek}[alph]{\@single@greek}{24}
\newcommand*{\greek}[1]{%
\expandafter\@greek\csname c@#1\endcsname
}
\AddEnumerateCounter{\greek}{\@greek}{$\omega$}
\end{lstlisting}
Some sophistication is required to get the |\translate|-style macros
to play nice with |\label| and |\ref| facilities.
This can be seen in the following example.
\begin{lstlisting}
\newcommand*{\enumHex}[1]{%
\expandafter\@enumHex\csname c@#1\endcsname}
\newcommand*{\@enumHex}[1]{%
\protect\Hexadecimalnum{\number#1}}
\AddEnumerateCounter{\enumHex}{\@enumHex}{AAAA}
\end{lstlisting}
The |\protect| makes sure the |\Hexadecimalnum| get written to the
|.aux| file, rather than expanded first.
The |\number| makes sure the number \emph{is} written to the |.aux|
file.\footnote{I'm actually guessing here.
I have no idea.
I got the clue from |egreg| here:
\url{http://tex.stackexchange.com/q/22234/215}}
\section{Limitations}
The biggest number TeX can handle is 2147483647.
I can't imagine this ever being a serious limitation to your
enumerating.
There are, however, some further limitations.
Certain |fmtcount| macros seem to break before they hit this
fundamental limit.
In brackets are the |moreenum|-defined enumerations affected.
\begin{itemize}
\item |\binary| and friends break at 131072 [|\enumbinary|]
\item |\hexadecimal| and friends break at 1048576 [|\enumhex| and |\enumHex|]
\item |\numberstring| and friends break at 100000 [|\nwords|,
|\nthwords| and friends]
\end{itemize}
None of these is a serious limitation.
If you desperately need bigger enumerations, they are fairly
straightforward to define yourself using |binhex| for the numbers and
|numname| for the words: these packages don't have these
limitations.\footnote{%
Why don't I just use those packages instead?
Because having |fmtcount| do most of the work means only loading one
package instead of 3 (|numname|, |binhex| and |nth| or |engord|).
Also, |fmtcount| can speak different languages,
and in future releases I'm tempted to try to get that working here.}
\section{Examples of the enumerations}
Here are examples of all the kinds of enumeration that the package
defines.
The first item contains a reference to the third.
This is to test if the referencing is working.
The labels have dots after them, to check whether errant spaces are
being added after the labels.\footnote{Thanks to Kevin Klement for
pointing this issue out to me.}
% \dotest{greek,Greek,enumHex,enumhex,enumbinary,raisenth,levelnth,nthwords,nwords}
\small\noindent
\testenumerate{greek}\hfil
\testenumerate{Greek}
\testenumerate{enumHex}\hfil
\testenumerate{enumhex}
\testenumerate{enumbinary}\hfil
\testenumerate{enumoctal}
\testenumerate{raisenth}\hfil
\testenumerate{levelnth}
\testenumerate{Nthwords}\hfil
\testenumerate{Nwords}
\testenumerate{NTHWORDS}\hfil
\testenumerate{NWORDS}
\testenumerate{nthwords}\hfil
\testenumerate{nwords}
\end{document}
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