blob: 9b8bc4424dd7c4f8e06a864d8355173b3ebe4f46 (
plain)
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
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %
% easyformat Easily add boldface, italics and smallcaps in LaTeX. %
% Copyright (C) 2017 Evert Provoost <evert.provoost@gmail.com> %
% %
% This program is free software: you can redistribute it and/or modify %
% it under the terms of the GNU General Public License as published by %
% the Free Software Foundation, either version 3 of the License, or %
% (at your option) any later version. %
% %
% This program is distributed in the hope that it will be useful, %
% but WITHOUT ANY WARRANTY; without even the implied warranty of %
% MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the %
% GNU General Public License for more details. %
% %
% You should have received a copy of the GNU General Public License %
% along with this program. If not, see <http://www.gnu.org/licenses/>. %
% %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%% NOTE TO THE FUTURE:
% In LaTeX3 the `New Font Selection Scheme' is replaced
% by XFSS (xfont). Moving will require some research.
%% Administration...
\RequirePackage{expl3}[2016/04/21]
\ProvidesExplPackage
{easyformat}
{2017/06/03}
{1.4.0}
{Easily add boldface, italics and smallcaps.}
%% Public macros
% Add macros to switch the syntax on or off.
\cs_new:Npn \enableeasyformat
{
\char_set_catcode_active:N _
\char_set_catcode_active:N ^
}
\cs_new:Npn \disableeasyformat
{
\char_set_catcode_math_subscript:N _
\char_set_catcode_math_superscript:N ^
}
% Add a macro LaTeX should have...
% Which is protected to fix the double superscript error
% and able to give correct kerning in mathmode.
\cs_new_protected:Npn \cir
{
\mode_if_math:TF
{ \hat{} }
{ \c_circumflex_str }
}
%% Variables
% Remember the style before changing to italics/boldface/smallcaps.
\str_new:N \l__prev_shape_str
\str_set_eq:NN \l__prev_shape_str \shapedefault
\str_new:N \l__prev_case_str
% Case is the option used in XFSS, however do note that in
% LaTeX2e's NFSS, smallcaps is a kind of shape.
\str_set_eq:NN \l__prev_case_str \shapedefault
\str_new:N \l__prev_series_str
\str_set_eq:NN \l__prev_series_str \seriesdefault
%% Formating handling
% Add macros which change the font shape and font series.
\cs_new:Npn \__font_set_shape:n #1
{
\fontshape {#1}
\selectfont
}
\cs_new:Npn \__font_set_series:n #1
{
\fontseries {#1}
\selectfont
}
% Switch italics on or off.
\cs_new:Npn \__handle_italics:
{
\str_if_eq:NNTF \f@shape \itdefault
{
\__font_set_shape:n {\l__prev_shape_str}
\str_set_eq:NN \l__prev_shape_str \shapedefault
% \maybe@ic adds italics correction if needed.
% Probably becomes \xfss_maybe_ic: in LaTeX3.
\maybe@ic
}
{
\str_set_eq:NN \l__prev_shape_str \f@shape
\itshape
}
}
% Switch smallcaps on or off.
\cs_new:Npn \__handle_smallcaps:
{
\str_if_eq:NNTF \f@shape \scdefault
{
\__font_set_shape:n {\l__prev_case_str}
\str_set_eq:NN \l__prev_case_str \shapedefault
}
{
\str_set_eq:NN \l__prev_case_str \f@shape
\scshape
}
}
% Switch boldface on or off.
\cs_new:Npn \__handle_boldface:
{
\str_if_eq:NNTF \f@series \bfdefault
{
\__font_set_series:n {\l__prev_series_str}
\str_set_eq:NN \l__prev_series_str \seriesdefault
}
{
\str_set_eq:NN \l__prev_series_str \f@series
\bfseries
}
}
%% Handling the syntax
% This is where the magic happens (also differentiates between
% text- and mathmode.)
% These are protected because they should also work in eg. \section{}
% Syntax handling for the underscore: italics and boldface.
\cs_new_protected:Npn \__syntax_underscore:
{
\mode_if_math:TF
{ \c_math_subscript_token }
{
\peek_charcode_remove:NTF _
% The second underscore is removed when detected.
{ \__handle_boldface: }
{ \__handle_italics: }
}
}
% Syntax handling for the circumflex: smallcaps.
\cs_new_protected:Npn \__syntax_circumflex:
{
\mode_if_math:TF
{ \c_math_superscript_token }
{ \__handle_smallcaps: }
}
% Now give the underscore and the circumflex their behaviour.
\char_set_active_eq:NN _ \__syntax_underscore:
\char_set_active_eq:NN ^ \__syntax_circumflex:
%% Activate the systems.
% First disable the Expl3 syntax as it will only cause trouble.
\ExplSyntaxOff
% Now enable the easyformat syntax.
\enableeasyformat
% DONE!!!
%% IMPLEMENTATION DETAILS:
%% Why not \textit/bf/sc\bgroup and \egroup?
% Well actualy that was the original solution. However this
% doesn't differentiate between ending itallics or ending
% boldface. The current solution does and this makes the
% syntax more predictable and generally more useful.
%% Why no ^^typewriter^^?
% because this doesn't add much value, in most contexts
% where a monospace font is useful there is already
% other syntax available.
|
