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
122
123
124
125
126
127
128
129
130
131
132
133
|
\input plainpkg
\ProvidesPackage{catchdq}[2012/09/20 v0.2 simple typographic dqs (UL)]
%%
%% Copyright (C) 2012 Uwe Lueck,
%% http://www.contact-ednotes.sty.de.vu
%% -- author-maintained in the sense of LPPL below --
%%
%% This file can be redistributed and/or modified under
%% the terms of the LaTeX Project Public License; either
%% version 1.3c of the License, or any later version.
%% The latest version of this license is in
%% http://www.latex-project.org/lppl.txt
%% There is NO WARRANTY (actually somewhat experimental).
%%
%% Please report bugs, problems, and suggestions via
%%
%% http://www.contact-ednotes.sty.de.vu
%%
%% == Purpose and Usage ==
%%
%% === Installing and Calling ===
%% The file `catchdq.sty' is provided ready,
%% installation only requires
%% putting it somewhere where \TeX\ finds it
%% (which may need updating the filename data
%% base).\urlfoot{ukfaqref}{inst-wlcf}
%% However, the files `plainpkg.tex' and `stacklet.sty' %% stacklet 2012/09/19
%% must be installed likewise.
%%
%% \emph{With} \LaTeX, the file should be loaded by `\RequirePackage{catchdq}'
%% or `\usepackage{catchdq}'.
%%
%% \emph{Without} \LaTeX, load it by `\input catchdq.sty'.
%%
%% As explained in `plainpgk-doc.pdf', however, ``generic"
%% packages based on 'plainpkg' should load 'catchdq' by
%% `\RequirePackage{catchdq}'.
%%
%% === Commands and Syntax ===
%% \label{sec:catchdq-cmds}
%% 'catchdq.sty' (indirectly) allows using |"<no-dqs>"|
%% for surrounding <no-dqs> with typographical quotation marks,
%% using that double quote |"| as an active character.
%% As rendering that `"' active during defining macros can
%% corrupt the latter, the user (or package writer) must
%% activate that `"' explicitly by |\catchdqs|.
%%
%% Further difficulties may arise after `\catchdqs',
%% various ways to get around them are described in the remaing sections.
%%
%% == The Code ==
%% === Required ===
%% The package is an application (of ideas of) 'actcodes.sty':
\RequirePackage{actcodes}
%%
%% === The Core: \cs{catchdq} ===
%% % \label{sec:catchdq-core}
%% |\catchdq<no-dqs>"| will expand to |\dqtd{<no-dqs>}|,
%% provided the \acro{ASCII} double quote is an active character:
{\MakeActive\"\gdef\catchdq#1"{\dqtd{#1}}}
%%
%% === What Double Quotes Actually Are ===
%% |\dqtd| in turn is a kind of ``variable." 'blog.sty' offered
%% |\endqtd| for English typographical double quotes,
%% |\dedqtd| for German ones, and |\asciidqtd| for ``non-typographical"
%% double quotes (as needed for \acro{XML} attributes).
%% |\asciidq| accesses a single \acro{ASCII} double quote,
%% |\enldq| a single English typographical left one,
%% |\enrdq| a single English typographical right one.
%% (It may be useful to access them indepentently of each other,
%% in certain complex situations ...)
%% 'blog.sty', dealing with \acro{HTML}, of course has different ideas
%% about them TODO.
\gdef\asciidq{"}
\gdef\asciidqtd#1{"#1"}
%% We allow loading 'catchdq' \emph{after} another package
%% (such as 'blog.sty') has chosen meanings for `\endqtd' and the
%% like (difficult TODO)
\ifx\enldq \undefined \gdef\enldq{``} \fi
\ifx\enrdq \undefined \global\let\enrdq\asciidq \fi
\ifx\endqtd\undefined \gdef\endqtd#1{\enldq#1\enrdq} \fi
%% Typographical alternatives to `\endqtd' may be obtained
%% from \CtanPkgRef{ngerman}{ngerman.sty} or so, if you are smart ...
%% %% <- 2012/09/20 ->
%% (see Section~\ref{sec:sw} for how it works):
\ifx\dedqtd\undefined \gdef\dedqtd#1{\glqq#1\grqq} \fi
%% 'blog.sty', dealing with \acro{HTML}, had a different idea
%% about `\endqtd' of course. It has also used the mechanism of
%% the \ctanpkgref{langcode} package that allows using `\dqtd' and other
%% language-depended constructs with an ``implicit" choice according
%% to the ``current language code," which should appear soon.
%%
%% === Switching ===
%% \label{sec:sw}
%% 'blog.sty' usually does a single switch which gets a new name now:
%% |\catchdqs|.
\gdef\catchdqs{\MakeActiveLet\"\catchdq}
%% After this, |"<no-dqs>"| will expand to `\dqtd{#1}'.
%% The default expansion for |\dqtd| will be |\endqtd|:
\ifx\dqtd\undefined \global\let\dqtd\endqtd \fi
%% Might be done by |\endqs|---when there are alternatives,
%% but 'blog.sty' and 'langcode.sty' do this in a different way ... TODO
% \gdef\endqs{\let\dqtd\endqtd}
% \ifx\dqtd\undefined \global\endqs \fi
%% \catchdqs Actually, here is a little "Tessst"~...
%% \let\dqtd\dedqtd \ and here with "doytshe doppleta anf..." $\dots$ \
%% This has been achieved by
%% \[`\usepackage{ngerman} \originalTeX'\]
%% \MakeOther\"
%%
%% |\MakeOther\"| may switch off catching mode (---done just before,
%% as \ctanpkgref{niceverb} at present doesn't render it verbatim).
%% 'actcodes' suggests
%% a different way to return from the `\catchdqs' state:
%% Let the character active and change its meaning only, let it
%% \emph{expand} to its ``other" version---by |\activeasciidqs|?
%% |\MakeActiveOther\"| and \catchdqs
%% \let"\asciidq
%% |\let"\asciidq| (it works!) or |\MakeActiveLet\"\asciidq|
%% (abbreviate as `\activeasciidqs'?) ... In 'blog.sty', there never
%% was a need for switching back. We must rework interaction with
%% 'niceverb' and can perhaps simplify the latter, ... TODO
%%
%% === Leaving and Version History ===
\endinput
%%
%% VERSION HISTORY
v0.1 2010/11/13 in texblog.fdf
v0.2 2012/09/17 own file, new ideas ...
2012/09/19 doc: stacklet
2012/09/20 \dedqtd conditionally; reworked doc.,
tested ngerman.sty
|
