1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
|
\documentclass{article}
\usepackage{etex}
\usepackage{xifthen}
\usepackage[ascii]{inputenc}
\usepackage[T1]{fontenc}
\usepackage[warn]{textcomp}
\usepackage[a4paper, pdftex, margin=1.5in]{geometry}
\usepackage{lmodern}
\usepackage{typetex}
\usepackage{cmdstring}
\usepackage{microtype}
\usepackage{xcolor}
\usepackage{url}
\usepackage[bottom,hang]{footmisc}
\usepackage[babel]{csquotes}
\usepackage[british]{babel}
\usepackage{hyperref}
\setcounter{secnumdepth}{-\maxdimen}
\newcommand*{\pack}{\textsf}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\newcommand*{\setdate}{}
\def \setdate #1/#2/#3#4{%
\year = #1
\month = #2
\day = #3#4
}
\makeatletter
\newcommand*{\getfileinfo}[1]{%
\def \filename {#1}%
\def \@tempb ##1 ##2 ##3\relax ##4\relax {%
\def \filedate {##1}%
\def \fileversion {##2}%
\def \fileinfo {##3}%
}%
\edef \@tempa {\csname ver@#1\endcsname}%
\expandafter \@tempb \@tempa \relax ? ? \relax \relax
}
\makeatother
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\title {The \pack{cmdstring} Package}
\author {Josselin Noirel}
\date {%
\getfileinfo{cmdstring.sty}
\expandafter \setdate \filedate
\today\ (\fileversion)}
\begin{document}
\maketitle
\begin{abstract}
For programmers, it is quite common to use the \emph{name} of a~macro
(for instance `foo' for the macro \cmd{foo}, in other words, the letters
\emph{f}, \emph{o}, and~\emph{o}). For this purpose, it is customary
to call \cmd{string} which does this sort of things\dots\ except that it
prepends the escape character, controlled by the counter \cmd{escapechar},
in front of the name. The traditional ways of getting rid of it, is to
set \cmd{escapechar} to~$-1$ (without forgetting to restore the proper
value at the end of the process) or to make use of \cmd{@gobble}.
The former has the drawback not to be expandible while the second isn't
completely reliable. Here we extend the expandible methods to make it
reliable.
\end{abstract}
Use this package with
%
\begin{texcode}
\cmd[1]{usepackage}{cmdstring}
\end{texcode}
or
\begin{texcode}
\cmd[1]{RequirePackage}{cmdstring}
\end{texcode}
%
Then whatever the value of \cmd{escapechar},
\tex{\cmd{cmdstring} {\meta{command}}} will give correct result. For
instance `\tex{\cmd{cmdstring}~\cmd{documentclass}}' gives `\cmdstring
\documentclass'; `\tex{\cmd{cmdstring}~\cmd{\\}}' gives `\cmdstring \\;
`\tex{\cmd{cmdstring}~\cmd{\SPACE}}' gives `\cmdstring \ ', i.e., the
command name without the escape~character.
\newpage
A~small test can be performed for all representative values of
\cmd{escapechar}
%
\begin{texcode}
\cmd{count}255 = -11 \newline
\cmd{loop} \cmd{escapechar} = \cmd{count}255 \newline
\ \ [\cmd{cmdstring} \cmd{documentclass}] \newline
\ \ [\cmd{cmdstring} \cmd{\\}] \newline
\ \ [\cmd{cmdstring} \cmd{\ }] \newline
\ \ \cmd{ifnum} \cmd{count}255 < 300 \cmd{advance} \cmd{count}255 by 1 \newline
\cmd{repeat}
\end{texcode}
%
which gives
%
\begin{list}{}{}
\item \font \tempfonta = ec-lmtt8 at 5pt
\tempfonta \baselineskip = 5.5pt \raggedright
\count255 = -11
\loop
\escapechar = \count255
[\cmdstring \documentclass]\nobreak\ %
[\cmdstring \\]\nobreak\ %
[\mbox{\cmdstring \ }]
\ifnum \count255 < 300
\advance \count255 by 1
\repeat \par
\end{list}
\end{document}
|
