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14\writestatus{loading}{ConTeXt Font Macros Features}
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16\unprotect
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122\permanent\tolerant\protected\def\definefontfeature[#featureset]#spacer[#parent]#spacer[#settings]
123 {\clf_definefontfeature{#featureset}{#parent}{#settings}}
124
125\permanent\tolerant\protected\def\adaptfontfeature[#pattern]#spacer[#settings]
126 {\clf_adaptfontfeature{#pattern}{#settings}}
127
128\permanent\protected\def\fontfeatureslist[#name]#spacer[#separator]
129 {\clf_featurelist{#name}{\detokenize{#separator}}}
130
131\attribute\zerocount\attributeunsetvalue
132
133\glyphdatafield\zerocount
134
135\let\font_dynamic_value\glyphdatafield
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137
138
139\mutable\let \currentfeature \s!current
140\let \m_font_feature_list \s!current
141\lettonothing\m_font_feature_asked
142\newconstant \c_font_feature_state
143
144\newevery\everyfontfeatureswitch
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146
147
148\permanent\tolerant\protected\def\addfeature [#1]#;#2{\edef\m_font_feature_asked{#1#2}\font_feature_add}
149\permanent\tolerant\protected\def\subtractfeature [#1]#;#2{\edef\m_font_feature_asked{#1#2}\font_feature_subtract}
150\permanent\tolerant\protected\def\replacefeature [#1]#;#2{\edef\m_font_feature_asked{#1#2}\font_feature_replace}
151\permanent\tolerant\protected\def\resetandaddfeature[#1]#;#2{\edef\m_font_feature_asked{#1#2}\font_feature_reset_add}
152\permanent\tolerant\protected\def\feature [#1]#;#2{\begincsname\??featureshortcut#1#2\endcsname}
153
154
155
156\permanent\protected\def\doaddfeature #1{\edef\m_font_feature_asked{#1}\font_feature_add}
157\permanent\protected\def\dosubtractfeature #1{\edef\m_font_feature_asked{#1}\font_feature_subtract}
158\permanent\protected\def\doreplacefeature #1{\edef\m_font_feature_asked{#1}\font_feature_replace}
159\permanent\protected\def\doresetandaddfeature#1{\edef\m_font_feature_asked{#1}\font_feature_reset_add}
160
161\protected\def\font_feature_add
162 {\ifnum\c_font_feature_state=\plusone
163 \ifx\m_font_feature_asked\currentfeature\else
164 \font_feature_add_indeed
165 \fi
166 \else
167 \font_feature_add_indeed
168 \fi}
169
170\protected\def\font_feature_add_indeed
171 {\clf_addfeature{\m_font_feature_list}{\m_font_feature_asked}
172 \edef\m_font_feature_list{\m_font_feature_list\m_font_feature_asked}
173 \c_font_feature_state\plusone
174 \let\currentfeature\m_font_feature_asked
175 \expand\everyfontfeatureswitch}
176
177\protected\def\font_feature_subtract
178 {\ifnum\c_font_feature_state=\minusone
179 \ifx\m_font_feature_asked\currentfeature\else
180 \font_feature_subtract_indeed
181 \fi
182 \else
183 \font_feature_subtract_indeed
184 \fi}
185
186\protected\def\font_feature_subtract_indeed
187 {\clf_subtractfeature{\m_font_feature_list}{\m_font_feature_asked}
188 \edef\m_font_feature_list{\m_font_feature_list\m_font_feature_asked}
189 \c_font_feature_state\minusone
190 \let\currentfeature\m_font_feature_asked
191 \expand\everyfontfeatureswitch}
192
193\protected\def\font_feature_replace
194 {\ifzero\c_font_feature_state
195 \ifx\m_font_feature_asked\currentfeature\else
196 \font_feature_replace_indeed
197 \fi
198 \else
199 \font_feature_replace_indeed
200 \fi}
201
202\protected\def\font_feature_replace_indeed
203 {\clf_replacefeature{\m_font_feature_list}{\m_font_feature_asked}
204 \edef\m_font_feature_list{\m_font_feature_list=\m_font_feature_asked}
205 \c_font_feature_state\zerocount
206 \let\currentfeature\m_font_feature_asked
207 \expand\everyfontfeatureswitch}
208
209\permanent\protected\def\resetfeature
210 {\ifx\currentfeature\s!current \else
211 \font_feature_reset_indeed
212 \fi}
213
214\protected\def\font_feature_reset_indeed
215 {\lettonothing\m_font_feature_asked
216 \let\currentfeature\s!current
217 \let\m_font_feature_list\s!current
218 \clf_resetfeature}
219
220\permanent\protected\def\revivefeature
221 {\ifx\currentfeature\s!current \else
222 \font_feature_revive_indeed
223 \fi}
224
225\protected\def\font_feature_revive_indeed
226 {\clf_revivefeature{\m_font_feature_list}}
227
228\protected\def\font_feature_reset_add
229 {\ifnum\c_font_feature_state=\plusone
230 \ifx\m_font_feature_asked\currentfeature\else
231 \font_feature_reset_add_indeed
232 \fi
233 \else
234 \font_feature_reset_add_indeed
235 \fi}
236
237\protected\def\font_feature_reset_add_indeed
238 {\clf_addfeature{\s!current}{\m_font_feature_asked}
239 \edef\m_font_feature_list{\s!current\m_font_feature_asked}
240 \c_font_feature_state\plusone
241 \let\currentfeature\m_font_feature_asked
242 \expand\everyfontfeatureswitch}
243
244\installcorenamespace{featureshortcut}
245
246\letcsname\??featureshortcut \endcsname\addfeature
247\letcsname\??featureshortcut \endcsname\subtractfeature
248\letcsname\??featureshortcut =\endcsname\replacefeature
249\letcsname\??featureshortcut !\endcsname\resetandaddfeature
250\letcsname\??featureshortcut >\endcsname\revivefeature
251\letcsname\??featureshortcut <\endcsname\resetfeature
252
253\letcsname\??featureshortcut\v!more \endcsname\addfeature
254\letcsname\??featureshortcut\v!less \endcsname\subtractfeature
255\letcsname\??featureshortcut\v!new \endcsname\replacefeature
256\letcsname\??featureshortcut\v!reset \endcsname\resetfeature
257\letcsname\??featureshortcut\v!default\endcsname\revivefeature
258\letcsname\??featureshortcut\v!old \endcsname\revivefeature
259\letcsname\??featureshortcut\v!local \endcsname\resetandaddfeature
260\letcsname\??featureshortcut\s!unknown\endcsname\empty
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285\let\m_font_feature_language\currentlanguage
286
287\permanent\protected\def\addfflanguage
288 {\ifx\currentlanguage\m_font_feature_language\else
289 \let\m_font_feature_language\currentlanguage
290 \let\m_font_feature_asked \currentlanguage
291 \font_feature_add
292 \fi}
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295
296\permanent\protected\def\featureattribute#feature
297 {\clf_featureattribute{#feature}}
298
299\permanent\protected\def\setfontfeature#feature
300 {\edef\currentfeature{#feature}
301 \let\m_font_feature_list\currentfeature
302 \clf_setfontfeature{\currentfeature}}
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306\aliased\let\resetfontfeature\resetfeature
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317\aliased\let\setff\setfontfeature
318\aliased\let\addfs\doaddfeature
319\aliased\let\subfs\dosubtractfeature
320\aliased\let\addff\doaddfeature
321\aliased\let\subff\dosubtractfeature
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329\definefontfeature
330 [justos]
331 [mode=node,onum=yes]
332
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334\permanent\protected\def\os{\setfontfeature{justos}}
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340\permanent\def\doifelsecurrentfonthasfeature#feature{\clf_doifelsecurrentfonthasfeature{#feature}}
341\permanent\def\doifelsefontfeature #feature{\clf_doifelsefontfeature {#feature}}
342\permanent\def\doifunknownfontfeature #feature{\clf_doifunknownfontfeature {#feature}}
343
344\aliased\let\doifcurrentfonthasfeatureelse\doifelsecurrentfonthasfeature
345\aliased\let\doiffontfeatureelse \doifelsefontfeature
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349\clf_registerlanguagefeatures
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353\permanent\protected\def\useaddfontfeatureparameter#namespace
354 {\edef\m_font_feature_asked{#namespace\c!features}
355 \ifempty\m_font_feature_asked\else
356 \font_feature_add
357 \fi}
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361\permanent\protected\def\slashedzero
362 {\dontleavehmode
363 \begingroup
364
365 \doaddfeature{zero}
366 0
367 \endgroup}
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385\permanent\protected\def\blockligatures[#1]{\clf_blockligatures{#1}}
386
387\protect \endinput
388 |