2 * \file LaTeXFeatures.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
7 * \author Lars Gullik Bjønnes
8 * \author Jean-Marc Lasgouttes
10 * \author André Pönitz
12 * Full author contact details are available in file CREDITS.
17 #include "LaTeXFeatures.h"
20 #include "BufferParams.h"
22 #include "Converter.h"
25 #include "FloatList.h"
27 #include "LaTeXFonts.h"
28 #include "LaTeXPackages.h"
32 #include "TextClass.h"
34 #include "texstream.h"
36 #include "insets/InsetLayout.h"
38 #include "support/debug.h"
39 #include "support/docstream.h"
40 #include "support/FileName.h"
41 #include "support/filetools.h"
42 #include "support/gettext.h"
43 #include "support/lstrings.h"
44 #include "support/regex.h"
50 using namespace lyx::support;
55 /////////////////////////////////////////////////////////////////////
59 /////////////////////////////////////////////////////////////////////
61 //\NeedsTeXFormat{LaTeX2e}
62 //\ProvidesPackage{lyx}[1996/01/11 LLE v0.2 (LyX LaTeX Extensions)]
63 //\message{LyX LaTeX Extensions (LLE v0.2) of 11-Jan-1996.}
65 static docstring const lyx_def = from_ascii(
66 "\\providecommand{\\LyX}{L\\kern-.1667em\\lower.25em\\hbox{Y}\\kern-.125emX\\@}");
68 static docstring const lyx_hyperref_def = from_ascii(
69 "\\providecommand{\\LyX}{\\texorpdfstring%\n"
70 " {L\\kern-.1667em\\lower.25em\\hbox{Y}\\kern-.125emX\\@}\n"
73 static docstring const noun_def = from_ascii(
74 "\\newcommand{\\noun}[1]{\\textsc{#1}}");
76 static docstring const lyxarrow_def = from_ascii(
77 "\\DeclareRobustCommand*{\\lyxarrow}{%\n"
79 "{\\leavevmode\\,$\\triangleleft$\\,\\allowbreak}\n"
80 "{\\leavevmode\\,$\\triangleright$\\,\\allowbreak}}");
82 // ZERO WIDTH SPACE (ZWSP) is actually not a space character
83 // but marks a line break opportunity. Several commands provide a
84 // line break opportunity. They differ in side-effects:
85 // \allowbreak prevents hyphenation after hyphen or dash + ZWSP
86 // \linebreak[<n>] takes an optional argument denoting "urgency".
87 // The \LyXZeroWidthSpace wrapper allows customization in the preamble.
88 static docstring const lyxZWSP_def = from_ascii(
89 "\\newcommand*\\LyXZeroWidthSpace{\\hspace{0pt}}");
91 // for quotes without babel. This does not give perfect results, but
92 // anybody serious about non-english quotes should use babel (JMarc).
94 static docstring const quotedblbase_def = from_ascii(
95 "\\ProvideTextCommandDefault{\\quotedblbase}{%\n"
96 " \\raisebox{-1.4ex}[1ex][.5ex]{\\textquotedblright}%\n"
97 " \\penalty10000\\hskip0em\\relax%\n"
100 static docstring const quotesinglbase_def = from_ascii(
101 "\\ProvideTextCommandDefault{\\quotesinglbase}{%\n"
102 " \\raisebox{-1.4ex}[1ex][.5ex]{\\textquoteright}%\n"
103 " \\penalty10000\\hskip0em\\relax%\n"
106 static docstring const guillemotleft_def = from_ascii(
107 "\\ProvideTextCommandDefault{\\guillemotleft}{%\n"
108 " {\\usefont{U}{lasy}{m}{n}\\char'50\\kern-.15em\\char'50}%\n"
109 "\\penalty10000\\hskip0pt\\relax%\n"
112 static docstring const guillemotright_def = from_ascii(
113 "\\ProvideTextCommandDefault{\\guillemotright}{%\n"
114 " \\penalty10000\\hskip0pt%\n"
115 " {\\usefont{U}{lasy}{m}{n}\\char'51\\kern-.15em\\char'51}%\n"
118 static docstring const guilsinglleft_def = from_ascii(
119 "\\ProvideTextCommandDefault{\\guilsinglleft}{%\n"
120 " {\\usefont{U}{lasy}{m}{n}\\char'50}%\n"
121 " \\penalty10000\\hskip0pt\\relax%\n"
124 static docstring const guilsinglright_def = from_ascii(
125 "\\ProvideTextCommandDefault{\\guilsinglright}{%\n"
126 " \\penalty10000\\hskip0pt%\n"
127 " {\\usefont{U}{lasy}{m}{n}\\char'51}%\n"
130 static docstring const textquotedbl_def = from_ascii(
131 "\\DeclareTextSymbolDefault{\\textquotedbl}{T1}");
133 static docstring const textquotedblp_xetex_def = from_ascii(
134 "\\providecommand\\textquotedblplain{%\n"
135 " \\bgroup\\addfontfeatures{Mapping=}\\char34\\egroup}");
137 static docstring const textquotedblp_luatex_def = from_ascii(
138 "\\providecommand\\textquotedblplain{%\n"
139 " \\bgroup\\addfontfeatures{RawFeature=-tlig}\\char34\\egroup}");
141 static docstring const textquotesinglep_xetex_def = from_ascii(
142 "\\providecommand\\textquotesingleplain{%\n"
143 " \\bgroup\\addfontfeatures{Mapping=}\\char39\\egroup}");
145 static docstring const textquotesinglep_luatex_def = from_ascii(
146 "\\providecommand\\textquotesingleplain{%\n"
147 " \\bgroup\\addfontfeatures{RawFeature=-tlig}\\char39\\egroup}");
149 static docstring const paragraphleftindent_def = from_ascii(
150 "\\newenvironment{LyXParagraphLeftIndent}[1]%\n"
152 " \\begin{list}{}{%\n"
153 " \\setlength{\\topsep}{0pt}%\n"
154 " \\addtolength{\\leftmargin}{#1}\n"
155 // ho hum, yet more things commented out with no hint as to why they
156 // weren't just removed
157 // "%% \\addtolength{\\leftmargin}{#1\\textwidth}\n"
158 // "%% \\setlength{\\textwidth}{#2\\textwidth}\n"
159 // "%% \\setlength\\listparindent\\parindent%\n"
160 // "%% \\setlength\\itemindent\\parindent%\n"
161 " \\setlength{\\parsep}{0pt plus 1pt}%\n"
167 static docstring const floatingfootnote_def = from_ascii(
168 "%% Special footnote code from the package 'stblftnt.sty'\n"
169 "%% Author: Robin Fairbairns -- Last revised Dec 13 1996\n"
170 "\\let\\SF@@footnote\\footnote\n"
171 "\\def\\footnote{\\ifx\\protect\\@typeset@protect\n"
172 " \\expandafter\\SF@@footnote\n"
174 " \\expandafter\\SF@gobble@opt\n"
177 "\\expandafter\\def\\csname SF@gobble@opt \\endcsname{\\@ifnextchar[%]\n"
178 " \\SF@gobble@twobracket\n"
181 "\\edef\\SF@gobble@opt{\\noexpand\\protect\n"
182 " \\expandafter\\noexpand\\csname SF@gobble@opt \\endcsname}\n"
183 "\\def\\SF@gobble@twobracket[#1]#2{}\n");
185 static docstring const binom_def = from_ascii(
186 "%% Binom macro for standard LaTeX users\n"
187 "\\newcommand{\\binom}[2]{{#1 \\choose #2}}\n");
189 static docstring const mathcircumflex_def = from_ascii(
190 "%% For printing a cirumflex inside a formula\n"
191 "\\newcommand{\\mathcircumflex}[0]{\\mbox{\\^{}}}\n");
193 static docstring const tabularnewline_def = from_ascii(
194 "%% Because html converters don't know tabularnewline\n"
195 "\\providecommand{\\tabularnewline}{\\\\}\n");
197 static docstring const lyxgreyedout_def = from_ascii(
198 "%% The greyedout annotation environment\n"
199 "\\newenvironment{lyxgreyedout}\n"
200 " {\\textcolor{note_fontcolor}\\bgroup\\ignorespaces}\n"
201 " {\\ignorespacesafterend\\egroup}\n");
203 // We want to omit the file extension for includegraphics, but this does not
204 // work when the filename contains other dots.
205 // Idea from http://www.tex.ac.uk/cgi-bin/texfaq2html?label=unkgrfextn
206 static docstring const lyxdot_def = from_ascii(
207 "%% A simple dot to overcome graphicx limitations\n"
208 "\\newcommand{\\lyxdot}{.}\n");
210 static docstring const changetracking_dvipost_def = from_ascii(
211 "%% Change tracking with dvipost\n"
213 "\\dvipost{osstart color push Red}\n"
214 "\\dvipost{osend color pop}\n"
215 "\\dvipost{cbstart color push Blue}\n"
216 "\\dvipost{cbend color pop}\n"
217 "\\DeclareRobustCommand{\\lyxadded}[3]{\\changestart#3\\changeend}\n"
218 "\\DeclareRobustCommand{\\lyxdeleted}[3]{%\n"
219 "\\changestart\\overstrikeon#3\\overstrikeoff\\changeend}\n");
221 static docstring const changetracking_xcolor_ulem_def = from_ascii(
222 "%% Change tracking with ulem\n"
223 "\\DeclareRobustCommand{\\lyxadded}[3]{{\\color{lyxadded}{}#3}}\n"
224 "\\DeclareRobustCommand{\\lyxdeleted}[3]{{\\color{lyxdeleted}\\lyxsout{#3}}}\n"
225 "\\DeclareRobustCommand{\\lyxsout}[1]{\\ifx\\\\#1\\else\\sout{#1}\\fi}\n");
227 static docstring const changetracking_xcolor_ulem_hyperref_def = from_ascii(
228 "%% Change tracking with ulem\n"
229 "\\DeclareRobustCommand{\\lyxadded}[3]{{\\texorpdfstring{\\color{lyxadded}{}}{}#3}}\n"
230 "\\DeclareRobustCommand{\\lyxdeleted}[3]{{\\texorpdfstring{\\color{lyxdeleted}\\lyxsout{#3}}{}}}\n"
231 "\\DeclareRobustCommand{\\lyxsout}[1]{\\ifx\\\\#1\\else\\sout{#1}\\fi}\n");
233 static docstring const changetracking_tikz_math_sout_def = from_ascii(
234 "%% Strike out display math with tikz\n"
235 "\\usepackage{tikz}\n"
236 "\\usetikzlibrary{calc}\n"
237 "\\newcommand{\\lyxmathsout}[1]{%\n"
238 " \\tikz[baseline=(math.base)]{\n"
239 " \\node[inner sep=0pt,outer sep=0pt](math){#1};\n"
240 " \\draw($(math.south west)+(2em,.5em)$)--($(math.north east)-(2em,.5em)$);\n"
244 static docstring const changetracking_none_def = from_ascii(
245 "\\newcommand{\\lyxadded}[3]{#3}\n"
246 "\\newcommand{\\lyxdeleted}[3]{}\n");
248 static docstring const textgreek_LGR_def = from_ascii(
249 "\\DeclareFontEncoding{LGR}{}{}\n");
250 static docstring const textgreek_def = from_ascii(
251 "\\DeclareRobustCommand{\\greektext}{%\n"
252 " \\fontencoding{LGR}\\selectfont\\def\\encodingdefault{LGR}}\n"
253 "\\DeclareRobustCommand{\\textgreek}[1]{\\leavevmode{\\greektext #1}}\n"
254 "\\ProvideTextCommand{\\~}{LGR}[1]{\\char126#1}\n");
256 static docstring const textcyr_T2A_def = from_ascii(
257 "\\InputIfFileExists{t2aenc.def}{}{%\n"
258 " \\errmessage{File `t2aenc.def' not found: Cyrillic script not supported}}\n");
259 static docstring const textcyr_def = from_ascii(
260 "\\DeclareRobustCommand{\\cyrtext}{%\n"
261 " \\fontencoding{T2A}\\selectfont\\def\\encodingdefault{T2A}}\n"
262 "\\DeclareRobustCommand{\\textcyr}[1]{\\leavevmode{\\cyrtext #1}}\n");
264 static docstring const lyxmathsym_def = from_ascii(
265 "\\newcommand{\\lyxmathsym}[1]{\\ifmmode\\begingroup\\def\\b@ld{bold}\n"
266 " \\text{\\ifx\\math@version\\b@ld\\bfseries\\fi#1}\\endgroup\\else#1\\fi}\n");
268 static docstring const papersizedvi_def = from_ascii(
269 "\\special{papersize=\\the\\paperwidth,\\the\\paperheight}\n");
271 static docstring const papersizepdf_def = from_ascii(
272 "\\pdfpageheight\\paperheight\n"
273 "\\pdfpagewidth\\paperwidth\n");
275 static docstring const papersizepdflua_def = from_ascii(
276 "% Backwards compatibility for LuaTeX < 0.90\n"
277 "\\@ifundefined{pageheight}{\\let\\pageheight\\pdfpageheight}{}\n"
278 "\\@ifundefined{pagewidth}{\\let\\pagewidth\\pdfpagewidth}{}\n"
279 "\\pageheight\\paperheight\n"
280 "\\pagewidth\\paperwidth\n");
282 static docstring const cedilla_def = from_ascii(
283 "\\newcommand{\\docedilla}[2]{\\underaccent{#1\\mathchar'30}{#2}}\n"
284 "\\newcommand{\\cedilla}[1]{\\mathpalette\\docedilla{#1}}\n");
286 static docstring const subring_def = from_ascii(
287 "\\newcommand{\\dosubring}[2]{\\underaccent{#1\\mathchar'27}{#2}}\n"
288 "\\newcommand{\\subring}[1]{\\mathpalette\\dosubring{#1}}\n");
290 static docstring const subdot_def = from_ascii(
291 "\\newcommand{\\dosubdot}[2]{\\underaccent{#1.}{#2}}\n"
292 "\\newcommand{\\subdot}[1]{\\mathpalette\\dosubdot{#1}}\n");
294 static docstring const subhat_def = from_ascii(
295 "\\newcommand{\\dosubhat}[2]{\\underaccent{#1\\mathchar'136}{#2}}\n"
296 "\\newcommand{\\subhat}[1]{\\mathpalette\\dosubhat{#1}}\n");
298 static docstring const subtilde_def = from_ascii(
299 "\\newcommand{\\dosubtilde}[2]{\\underaccent{#1\\mathchar'176}{#2}}\n"
300 "\\newcommand{\\subtilde}[1]{\\mathpalette\\dosubtilde{#1}}\n");
302 static docstring const dacute_def = from_ascii(
303 "\\DeclareMathAccent{\\dacute}{\\mathalpha}{operators}{'175}\n");
305 static docstring const tipasymb_def = from_ascii(
306 "\\DeclareFontEncoding{T3}{}{}\n"
307 "\\DeclareSymbolFont{tipasymb}{T3}{cmr}{m}{n}\n");
309 static docstring const dgrave_def = from_ascii(
310 "\\DeclareMathAccent{\\dgrave}{\\mathord}{tipasymb}{'15}\n");
312 static docstring const rcap_def = from_ascii(
313 "\\DeclareMathAccent{\\rcap}{\\mathord}{tipasymb}{'20}\n");
315 static docstring const ogonek_def = from_ascii(
316 "\\newcommand{\\doogonek}[2]{\\setbox0=\\hbox{$#1#2$}\\underaccent{#1\\mkern-6mu\n"
317 " \\ifx#2O\\hskip0.5\\wd0\\else\\ifx#2U\\hskip0.5\\wd0\\else\\hskip\\wd0\\fi\\fi\n"
318 " \\ifx#2o\\mkern-2mu\\else\\ifx#2e\\mkern-1mu\\fi\\fi\n"
319 " \\mathchar\"0\\hexnumber@\\symtipasymb0C}{#2}}\n"
320 "\\newcommand{\\ogonek}[1]{\\mathpalette\\doogonek{#1}}\n");
322 static docstring const lyxaccent_def = from_ascii(
323 "%% custom text accent \\LyxTextAccent[<rise value (length)>]{<accent>}{<base>}\n"
324 "\\newcommand*{\\LyxTextAccent}[3][0ex]{%\n"
325 " \\hmode@bgroup\\ooalign{\\null#3\\crcr\\hidewidth\n"
326 " \\raise#1\\hbox{#2}\\hidewidth}\\egroup}\n"
327 "%% select a font size smaller than the current font size:\n"
328 "\\newcommand{\\LyxAccentSize}[1][\\sf@size]{%\n"
329 " \\check@mathfonts\\fontsize#1\\z@\\math@fontsfalse\\selectfont\n"
332 static docstring const textcommabelow_def = from_ascii(
333 "\\ProvideTextCommandDefault{\\textcommabelow}[1]{%%\n"
334 " \\LyxTextAccent[-.31ex]{\\LyxAccentSize,}{#1}}\n");
336 static docstring const textcommaabove_def = from_ascii(
337 "\\ProvideTextCommandDefault{\\textcommaabove}[1]{%%\n"
338 " \\LyxTextAccent[.5ex]{\\LyxAccentSize`}{#1}}\n");
340 static docstring const textcommaaboveright_def = from_ascii(
341 "\\ProvideTextCommandDefault{\\textcommaaboveright}[1]{%%\n"
342 " \\LyxTextAccent[.5ex]{\\LyxAccentSize\\ '}{#1}}\n");
344 // Baltic languages use a comma-accent instead of a cedilla
345 static docstring const textbaltic_def = from_ascii(
346 "%% use comma accent instead of cedilla for these characters:\n"
347 "\\DeclareTextCompositeCommand{\\c}{T1}{g}{\\textcommaabove{g}}\n"
348 "\\DeclareTextCompositeCommand{\\c}{T1}{G}{\\textcommabelow{G}}\n"
349 "\\DeclareTextCompositeCommand{\\c}{T1}{k}{\\textcommabelow{k}}\n"
350 "\\DeclareTextCompositeCommand{\\c}{T1}{K}{\\textcommabelow{K}}\n"
351 "\\DeclareTextCompositeCommand{\\c}{T1}{l}{\\textcommabelow{l}}\n"
352 "\\DeclareTextCompositeCommand{\\c}{T1}{L}{\\textcommabelow{L}}\n"
353 "\\DeclareTextCompositeCommand{\\c}{T1}{n}{\\textcommabelow{n}}\n"
354 "\\DeclareTextCompositeCommand{\\c}{T1}{N}{\\textcommabelow{N}}\n"
355 "\\DeclareTextCompositeCommand{\\c}{T1}{r}{\\textcommabelow{r}}\n"
356 "\\DeclareTextCompositeCommand{\\c}{T1}{R}{\\textcommabelow{R}}\n");
358 // split-level fractions
359 static docstring const xfrac_def = from_ascii(
360 "\\usepackage{xfrac}\n");
361 static docstring const smallLetterFrac_def = from_ascii(
362 "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{default}{text}\n"
363 " {phantom=c, scale-factor=1.0, slash-left-kern=-.05em}\n"
364 "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{lmr}{text}\n"
365 " {slash-symbol-font=ptm, phantom=c, scale-factor=1, slash-left-kern=-.05em}\n"
366 "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{lmss}{text}\n"
367 " {slash-symbol-font=ptm, phantom=c, scale-factor=1, slash-left-kern=-.05em}\n"
368 "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{cmr}{text}\n"
369 " {slash-symbol-font=ptm, phantom=c, scale-factor=1, slash-left-kern=-.05em}\n"
370 "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{cmss}{text}\n"
371 " {slash-symbol-font=ptm, phantom=c, scale-factor=1, slash-left-kern=-.05em}\n"
372 "\\newcommand{\\smallLetterFrac}[2]{%\n"
373 " {\\UseCollection{xfrac}{smallLetterFrac}\\sfrac{#1}{#2}}}\n");
375 static docstring const lyxref_def = from_ascii(
376 "\\RS@ifundefined{subsecref}\n"
377 " {\\newref{subsec}{name = \\RSsectxt}}\n"
379 "\\RS@ifundefined{thmref}\n"
380 " {\\def\\RSthmtxt{theorem~}\\newref{thm}{name = \\RSthmtxt}}\n"
382 "\\RS@ifundefined{lemref}\n"
383 " {\\def\\RSlemtxt{lemma~}\\newref{lem}{name = \\RSlemtxt}}\n"
386 // Make sure the columns are also outputed as rtl
387 static docstring const rtloutputdblcol_def = from_ascii(
388 "\\def\\@outputdblcol{%\n"
389 " \\if@firstcolumn\n"
390 " \\global \\@firstcolumnfalse\n"
391 " \\global \\setbox\\@leftcolumn \\box\\@outputbox\n"
393 " \\global \\@firstcolumntrue\n"
394 " \\setbox\\@outputbox \\vbox {%\n"
395 " \\hb@xt@\\textwidth {%\n"
396 " \\kern\\textwidth \\kern-\\columnwidth %**\n"
397 " \\hb@xt@\\columnwidth {%\n"
398 " \\box\\@leftcolumn \\hss}%\n"
399 " \\kern-\\textwidth %**\n"
401 " {\\normalcolor\\vrule \\@width\\columnseprule}%\n"
403 " \\kern-\\textwidth %**\n"
404 " \\hb@xt@\\columnwidth {%\n"
405 " \\box\\@outputbox \\hss}%\n"
406 " \\kern-\\columnwidth \\kern\\textwidth %**\n"
409 " \\@combinedblfloats\n"
412 " \\@dblfloatplacement\n"
413 " \\@startdblcolumn\n"
414 " \\@whilesw\\if@fcolmade \\fi\n"
416 " \\@startdblcolumn}%\n"
420 "\\@mparswitchtrue\n");
422 static docstring const lyxmintcaption_def = from_ascii(
423 "\\long\\def\\lyxmintcaption[#1]#2{%\n"
424 " \\ifx#1t\\vskip\\baselineskip\\fi%\n"
425 " \\refstepcounter{listing}\\noindent%\n"
426 " \\addcontentsline{lol}{listing}%\n"
427 " {\\protect\\numberline{\\thelisting}{\\ignorespaces #2}}%\n"
428 " \\setbox\\@tempboxa\\hbox{\\listingscaption~\\thelisting: #2}%\n"
429 " \\ifdim \\wd\\@tempboxa >\\linewidth%\n"
430 " \\parbox[t]{\\linewidth}{\\unhbox\\@tempboxa}\\else%\n"
431 " \\hbox to\\linewidth{\\hfil\\box\\@tempboxa\\hfil}\\fi%\n"
432 " \\ifx#1b\\vskip\\baselineskip\\fi\n"
436 /////////////////////////////////////////////////////////////////////
440 /////////////////////////////////////////////////////////////////////
442 static docstring const lyxnoun_style = from_ascii(
444 " font-variant: small-caps;\n"
448 // this is how it normally renders, but it might not always do so.
449 static docstring const lyxstrikeout_style = from_ascii(
451 " text-decoration: line-through;\n"
455 /////////////////////////////////////////////////////////////////////
459 /////////////////////////////////////////////////////////////////////
462 LaTeXFeatures::LaTeXFeatures(Buffer const & b, BufferParams const & p,
463 OutputParams const & r)
464 : buffer_(&b), params_(p), runparams_(r), in_float_(false),
465 in_deleted_inset_(false)
469 LaTeXFeatures::LangPackage LaTeXFeatures::langPackage() const
471 string const local_lp = bufferParams().lang_package;
473 // Locally, custom is just stored as a string
474 // in bufferParams().lang_package.
475 if (local_lp != "auto"
476 && local_lp != "babel"
477 && local_lp != "default"
478 && local_lp != "none")
479 return LANG_PACK_CUSTOM;
481 if (local_lp == "none")
482 return LANG_PACK_NONE;
484 /* If "auto" is selected, we load polyglossia with non-TeX fonts,
485 * else we select babel.
486 * If babel is selected (either directly or via the "auto"
487 * mechanism), we really do only require it if we have
488 * a language that needs it.
490 bool const polyglossia_required =
491 params_.useNonTeXFonts
492 && isAvailable("polyglossia")
493 && !isProvided("babel")
494 && this->hasOnlyPolyglossiaLanguages();
495 bool const babel_required =
496 !bufferParams().language->babel().empty()
497 || !this->getBabelLanguages().empty();
499 if (local_lp == "auto") {
500 // polyglossia requirement has priority over babel
501 if (polyglossia_required)
502 return LANG_PACK_POLYGLOSSIA;
503 else if (babel_required)
504 return LANG_PACK_BABEL;
507 if (local_lp == "babel") {
509 return LANG_PACK_BABEL;
512 if (local_lp == "default") {
513 switch (lyxrc.language_package_selection) {
515 // polyglossia requirement has priority over babel
516 if (polyglossia_required)
517 return LANG_PACK_POLYGLOSSIA;
518 else if (babel_required)
519 return LANG_PACK_BABEL;
521 case LyXRC::LP_BABEL:
523 return LANG_PACK_BABEL;
525 case LyXRC::LP_CUSTOM:
526 return LANG_PACK_CUSTOM;
528 return LANG_PACK_NONE;
532 return LANG_PACK_NONE;
536 void LaTeXFeatures::require(string const & name)
538 features_.insert(name);
542 void LaTeXFeatures::require(set<string> const & names)
544 features_.insert(names.begin(), names.end());
548 void LaTeXFeatures::useLayout(docstring const & layoutname)
550 useLayout(layoutname, 0);
554 void LaTeXFeatures::useLayout(docstring const & layoutname, int level)
556 // Some code to avoid loops in dependency definition
557 const int maxlevel = 30;
558 if (level > maxlevel) {
559 lyxerr << "LaTeXFeatures::useLayout: maximum level of "
560 << "recursion attained by layout "
561 << to_utf8(layoutname) << endl;
565 DocumentClass const & tclass = params_.documentClass();
566 if (tclass.hasLayout(layoutname)) {
567 // Is this layout already in usedLayouts?
568 if (find(usedLayouts_.begin(), usedLayouts_.end(), layoutname)
569 != usedLayouts_.end())
572 Layout const & layout = tclass[layoutname];
573 require(layout.requires());
575 if (!layout.depends_on().empty()) {
576 useLayout(layout.depends_on(), level + 1);
578 usedLayouts_.push_back(layoutname);
580 lyxerr << "LaTeXFeatures::useLayout: layout `"
581 << to_utf8(layoutname) << "' does not exist in this class"
587 void LaTeXFeatures::useInsetLayout(InsetLayout const & lay)
589 docstring const & lname = lay.name();
590 DocumentClass const & tclass = params_.documentClass();
592 // this is a default inset layout, nothing useful here
593 if (!tclass.hasInsetLayout(lname))
595 // Is this layout already in usedInsetLayouts?
596 if (find(usedInsetLayouts_.begin(), usedInsetLayouts_.end(), lname)
597 != usedInsetLayouts_.end())
600 require(lay.requires());
601 usedInsetLayouts_.push_back(lname);
605 bool LaTeXFeatures::isRequired(string const & name) const
607 return features_.find(name) != features_.end();
611 bool LaTeXFeatures::isProvided(string const & name) const
613 if (params_.useNonTeXFonts)
614 return params_.documentClass().provides(name);
616 bool const ot1 = (params_.main_font_encoding() == "default"
617 || params_.main_font_encoding() == "OT1");
618 bool const complete = (params_.fontsSans() == "default"
619 && params_.fontsTypewriter() == "default");
620 bool const nomath = (params_.fontsMath() == "default");
621 return params_.documentClass().provides(name)
622 || theLaTeXFonts().getLaTeXFont(
623 from_ascii(params_.fontsRoman())).provides(name, ot1,
626 || theLaTeXFonts().getLaTeXFont(
627 from_ascii(params_.fontsSans())).provides(name, ot1,
630 || theLaTeXFonts().getLaTeXFont(
631 from_ascii(params_.fontsTypewriter())).provides(name, ot1,
634 || theLaTeXFonts().getLaTeXFont(
635 from_ascii(params_.fontsMath())).provides(name, ot1,
638 // TODO: "textbaltic" provided, if the font-encoding is "L7x"
639 // "textgreek" provided, if a language with font-encoding LGR is used in the document
640 // "textcyr" provided, if a language with font-encoding T2A is used in the document
644 bool LaTeXFeatures::mustProvide(string const & name) const
646 return isRequired(name) && !isProvided(name);
650 bool LaTeXFeatures::isAvailable(string const & name)
652 string::size_type const i = name.find("->");
653 if (i != string::npos) {
654 string const from = name.substr(0,i);
655 string const to = name.substr(i+2);
656 //LYXERR0("from=[" << from << "] to=[" << to << "]");
657 return theConverters().isReachable(from, to);
659 return LaTeXPackages::isAvailable(name);
665 void addSnippet(std::list<TexString> & list, TexString ts, bool allow_dupes)
668 // test the absense of duplicates, i.e. elements with same str
669 none_of(list.begin(), list.end(), [&](TexString const & ts2){
670 return ts.str == ts2.str;
673 list.push_back(move(ts));
677 TexString getSnippets(std::list<TexString> const & list)
679 otexstringstream snip;
680 for (TexString const & ts : list)
681 snip << TexString(ts) << '\n';
682 return snip.release();
688 void LaTeXFeatures::addPreambleSnippet(TexString ts, bool allow_dupes)
690 addSnippet(preamble_snippets_, move(ts), allow_dupes);
694 void LaTeXFeatures::addPreambleSnippet(docstring const & str, bool allow_dupes)
696 addSnippet(preamble_snippets_, TexString(str), allow_dupes);
700 void LaTeXFeatures::addCSSSnippet(std::string const & snippet)
702 addSnippet(css_snippets_, TexString(from_ascii(snippet)), false);
706 TexString LaTeXFeatures::getPreambleSnippets() const
708 return getSnippets(preamble_snippets_);
712 docstring LaTeXFeatures::getCSSSnippets() const
714 return getSnippets(css_snippets_).str;
719 void LaTeXFeatures::useFloat(string const & name, bool subfloat)
721 if (!usedFloats_[name])
722 usedFloats_[name] = subfloat;
725 // We only need float.sty if we use non builtin floats, or if we
726 // use the "H" modifier. This includes modified table and
727 // figure floats. (Lgb)
728 Floating const & fl = params_.documentClass().floats().getType(name);
729 if (!fl.floattype().empty() && fl.usesFloatPkg()) {
735 void LaTeXFeatures::useLanguage(Language const * lang)
737 if (!lang->babel().empty() || !lang->polyglossia().empty())
738 UsedLanguages_.insert(lang);
739 if (!lang->requires().empty())
740 require(lang->requires());
741 // CJK languages do not have a babel name.
742 // They use the CJK package
743 if (lang->encoding()->package() == Encoding::CJK)
745 // japanese package is special
746 if (lang->encoding()->package() == Encoding::japanese)
751 void LaTeXFeatures::includeFile(docstring const & key, string const & name)
753 IncludedFiles_[key] = name;
757 bool LaTeXFeatures::hasLanguages() const
759 return !UsedLanguages_.empty();
763 bool LaTeXFeatures::hasOnlyPolyglossiaLanguages() const
765 // first the main language
766 if (params_.language->polyglossia().empty())
768 // now the secondary languages
769 LanguageList::const_iterator const begin = UsedLanguages_.begin();
770 for (LanguageList::const_iterator cit = begin;
771 cit != UsedLanguages_.end();
773 if ((*cit)->polyglossia().empty())
780 bool LaTeXFeatures::hasPolyglossiaExclusiveLanguages() const
782 // first the main language
783 if (params_.language->isPolyglossiaExclusive())
785 // now the secondary languages
786 LanguageList::const_iterator const begin = UsedLanguages_.begin();
787 for (LanguageList::const_iterator cit = begin;
788 cit != UsedLanguages_.end();
790 if ((*cit)->isPolyglossiaExclusive())
797 vector<string> LaTeXFeatures::getPolyglossiaExclusiveLanguages() const
799 vector<string> result;
800 // first the main language
801 if (params_.language->isPolyglossiaExclusive())
802 result.push_back(params_.language->display());
803 // now the secondary languages
804 LanguageList::const_iterator const begin = UsedLanguages_.begin();
805 for (LanguageList::const_iterator cit = begin;
806 cit != UsedLanguages_.end();
808 if ((*cit)->isPolyglossiaExclusive())
809 result.push_back((*cit)->display());
815 vector<string> LaTeXFeatures::getBabelExclusiveLanguages() const
817 vector<string> result;
818 // first the main language
819 if (params_.language->isBabelExclusive())
820 result.push_back(params_.language->display());
821 // now the secondary languages
822 LanguageList::const_iterator const begin = UsedLanguages_.begin();
823 for (LanguageList::const_iterator cit = begin;
824 cit != UsedLanguages_.end();
826 if ((*cit)->isBabelExclusive())
827 result.push_back((*cit)->display());
833 string LaTeXFeatures::getBabelLanguages() const
835 ostringstream languages;
838 LanguageList::const_iterator const begin = UsedLanguages_.begin();
839 for (LanguageList::const_iterator cit = begin;
840 cit != UsedLanguages_.end();
842 if ((*cit)->babel().empty())
848 languages << (*cit)->babel();
850 return languages.str();
854 set<string> LaTeXFeatures::getPolyglossiaLanguages() const
856 set<string> languages;
858 LanguageList::const_iterator const begin = UsedLanguages_.begin();
859 for (LanguageList::const_iterator cit = begin;
860 cit != UsedLanguages_.end();
862 // We do not need the variants here
863 languages.insert((*cit)->polyglossia());
869 set<string> LaTeXFeatures::getEncodingSet(string const & doc_encoding) const
871 // This does only find encodings of languages supported by babel, but
872 // that does not matter since we don't have a language with an
873 // encoding supported by inputenc but without babel support.
874 set<string> encodings;
875 LanguageList::const_iterator it = UsedLanguages_.begin();
876 LanguageList::const_iterator end = UsedLanguages_.end();
877 for (; it != end; ++it)
878 if ((*it)->encoding()->latexName() != doc_encoding &&
879 ((*it)->encoding()->package() == Encoding::inputenc
880 || (*it)->encoding()->package() == Encoding::japanese))
881 encodings.insert((*it)->encoding()->latexName());
886 void LaTeXFeatures::getFontEncodings(vector<string> & encodings) const
888 // these must be loaded if glyphs of this script are used
889 // unless a language providing them is used in the document
890 if (mustProvide("textgreek")
891 && find(encodings.begin(), encodings.end(), "LGR") == encodings.end())
892 encodings.insert(encodings.begin(), "LGR");
893 if (mustProvide("textcyr")
894 && find(encodings.begin(), encodings.end(), "T2A") == encodings.end())
895 encodings.insert(encodings.begin(), "T2A");
897 LanguageList::const_iterator it = UsedLanguages_.begin();
898 LanguageList::const_iterator end = UsedLanguages_.end();
899 for (; it != end; ++it)
900 if (!(*it)->fontenc().empty()
901 && ascii_lowercase((*it)->fontenc()) != "none") {
902 vector<string> extraencs = getVectorFromString((*it)->fontenc());
903 vector<string>::const_iterator fit = extraencs.begin();
904 for (; fit != extraencs.end(); ++fit) {
905 if (find(encodings.begin(), encodings.end(), *fit) == encodings.end())
906 encodings.insert(encodings.begin(), *fit);
913 char const * simplefeatures[] = {
914 // note that the package order here will be the same in the LaTeX-output
921 // subfig is handled in BufferParams.cpp
925 /*For a successful cooperation of the `wrapfig' package with the
926 `float' package you should load the `wrapfig' package *after*
927 the `float' package. See the caption package documentation
958 // listings is handled in BufferParams.cpp
981 char const * bibliofeatures[] = {
982 // Known bibliography packages (will be loaded before natbib)
998 int const nb_bibliofeatures = sizeof(bibliofeatures) / sizeof(char const *);
1000 int const nb_simplefeatures = sizeof(simplefeatures) / sizeof(char const *);
1005 string const LaTeXFeatures::getColorOptions() const
1007 ostringstream colors;
1009 // Handling the color packages separately is needed to be able to load them
1010 // before babel when hyperref is loaded with the colorlinks option
1011 // for more info see Bufferparams.cpp
1014 if (mustProvide("color") || mustProvide("xcolor")) {
1015 string const package =
1016 (mustProvide("xcolor") ? "xcolor" : "color");
1017 if (params_.graphics_driver == "default"
1018 || params_.graphics_driver == "none")
1019 colors << "\\usepackage{" << package << "}\n";
1021 colors << "\\usepackage["
1022 << params_.graphics_driver
1023 << "]{" << package << "}\n";
1026 // pdfcolmk must be loaded after color
1027 if (mustProvide("pdfcolmk"))
1028 colors << "\\usepackage{pdfcolmk}\n";
1030 // the following 3 color commands must be set after color
1031 // is loaded and before pdfpages, therefore add the command
1032 // here define the set color
1033 if (mustProvide("pagecolor")) {
1034 colors << "\\definecolor{page_backgroundcolor}{rgb}{";
1035 colors << outputLaTeXColor(params_.backgroundcolor) << "}\n";
1036 // set the page color
1037 colors << "\\pagecolor{page_backgroundcolor}\n";
1040 if (mustProvide("fontcolor")) {
1041 colors << "\\definecolor{document_fontcolor}{rgb}{";
1042 colors << outputLaTeXColor(params_.fontcolor) << "}\n";
1044 colors << "\\color{document_fontcolor}\n";
1047 if (mustProvide("lyxgreyedout")) {
1048 colors << "\\definecolor{note_fontcolor}{rgb}{";
1049 colors << outputLaTeXColor(params_.notefontcolor) << "}\n";
1050 // the color will be set together with the definition of
1051 // the lyxgreyedout environment (see lyxgreyedout_def)
1054 // color for shaded boxes
1055 if (isRequired("framed") && mustProvide("color")) {
1056 colors << "\\definecolor{shadecolor}{rgb}{";
1057 colors << outputLaTeXColor(params_.boxbgcolor) << "}\n";
1058 // this color is automatically used by the LaTeX-package "framed"
1061 return colors.str();
1065 string const LaTeXFeatures::getPackageOptions() const
1067 ostringstream packageopts;
1068 // Output all the package option stuff we have been asked to do.
1069 map<string, string>::const_iterator it =
1070 params_.documentClass().packageOptions().begin();
1071 map<string, string>::const_iterator en =
1072 params_.documentClass().packageOptions().end();
1073 for (; it != en; ++it)
1074 if (mustProvide(it->first))
1075 packageopts << "\\PassOptionsToPackage{" << it->second << "}"
1076 << "{" << it->first << "}\n";
1077 return packageopts.str();
1081 string const LaTeXFeatures::getPackages() const
1083 ostringstream packages;
1085 // FIXME: currently, we can only load packages and macros known
1087 // However, with the Require tag of layouts/custom insets,
1088 // also unknown packages can be requested. They are silently
1089 // swallowed now. We should change this eventually.
1091 // These are all the 'simple' includes. i.e
1092 // packages which we just \usepackage{package}
1093 for (int i = 0; i < nb_simplefeatures; ++i) {
1094 if (mustProvide(simplefeatures[i]))
1095 packages << "\\usepackage{" << simplefeatures[i] << "}\n";
1098 // The rest of these packages are somewhat more complicated
1099 // than those above.
1101 // The tipa package and its extensions (tipx, tone) must not
1102 // be loaded with non-TeX fonts, since fontspec includes the
1103 // respective macros
1104 if (mustProvide("tipa") && !params_.useNonTeXFonts)
1105 packages << "\\usepackage{tipa}\n";
1106 if (mustProvide("tipx") && !params_.useNonTeXFonts)
1107 packages << "\\usepackage{tipx}\n";
1108 if (mustProvide("extraipa") && !params_.useNonTeXFonts)
1109 packages << "\\usepackage{extraipa}\n";
1110 if (mustProvide("tone") && !params_.useNonTeXFonts)
1111 packages << "\\usepackage{tone}\n";
1113 // if fontspec or newtxmath is used, AMS packages have to be loaded
1114 // before fontspec (in BufferParams)
1115 string const amsPackages = loadAMSPackages();
1116 bool const ot1 = (params_.main_font_encoding() == "default"
1117 || params_.main_font_encoding() == "OT1");
1118 bool const use_newtxmath =
1119 theLaTeXFonts().getLaTeXFont(from_ascii(params_.fontsMath())).getUsedPackage(
1120 ot1, false, false) == "newtxmath";
1122 if (!params_.useNonTeXFonts && !use_newtxmath && !amsPackages.empty())
1123 packages << amsPackages;
1125 if (mustProvide("cancel") &&
1126 params_.use_package("cancel") != BufferParams::package_off)
1127 packages << "\\usepackage{cancel}\n";
1129 // marvosym and bbding both define the \Cross macro
1130 if (mustProvide("marvosym")) {
1131 if (mustProvide("bbding"))
1132 packages << "\\let\\Cross\\relax\n";
1133 packages << "\\usepackage{marvosym}\n";
1136 // accents must be loaded after amsmath
1137 if (mustProvide("accents") &&
1138 params_.use_package("accents") != BufferParams::package_off)
1139 packages << "\\usepackage{accents}\n";
1141 // mathdots must be loaded after amsmath
1142 if (mustProvide("mathdots") &&
1143 params_.use_package("mathdots") != BufferParams::package_off)
1144 packages << "\\usepackage{mathdots}\n";
1146 // yhmath must be loaded after amsmath
1147 if (mustProvide("yhmath") &&
1148 params_.use_package("yhmath") != BufferParams::package_off)
1149 packages << "\\usepackage{yhmath}\n";
1151 // stmaryrd must be loaded after amsmath
1152 if (mustProvide("stmaryrd") &&
1153 params_.use_package("stmaryrd") != BufferParams::package_off)
1154 packages << "\\usepackage{stmaryrd}\n";
1156 if (mustProvide("stackrel") &&
1157 params_.use_package("stackrel") != BufferParams::package_off)
1158 packages << "\\usepackage{stackrel}\n";
1160 if (mustProvide("undertilde") &&
1161 params_.use_package("undertilde") != BufferParams::package_off)
1162 packages << "\\usepackage{undertilde}\n";
1164 // [x]color and pdfcolmk are handled in getColorOptions() above
1167 if (isRequired("makeidx") || isRequired("splitidx")) {
1168 if (!isProvided("makeidx") && !isRequired("splitidx"))
1169 packages << "\\usepackage{makeidx}\n";
1170 if (mustProvide("splitidx"))
1171 packages << "\\usepackage{splitidx}\n";
1172 packages << "\\makeindex\n";
1176 if (mustProvide("graphicx") && params_.graphics_driver != "none") {
1177 if (params_.graphics_driver == "default")
1178 packages << "\\usepackage{graphicx}\n";
1180 packages << "\\usepackage["
1181 << params_.graphics_driver
1185 // lyxskak.sty --- newer chess support based on skak.sty
1186 if (mustProvide("chess"))
1187 packages << "\\usepackage[ps,mover]{lyxskak}\n";
1190 if (mustProvide("setspace") && !isProvided("SetSpace"))
1191 packages << "\\usepackage{setspace}\n";
1193 // we need to assure that mhchem is loaded before esint and every other
1194 // package that redefines command of amsmath because mhchem loads amlatex
1195 // (this info is from the author of mhchem from June 2013)
1196 if (mustProvide("mhchem") &&
1197 params_.use_package("mhchem") != BufferParams::package_off)
1198 packages << "\\PassOptionsToPackage{version=3}{mhchem}\n"
1199 "\\usepackage{mhchem}\n";
1201 // wasysym is a simple feature, but it must be after amsmath if both
1203 // wasysym redefines some integrals (e.g. iint) from amsmath. That
1204 // leads to inconsistent integrals. We only load this package if
1205 // the document does not contain integrals (then isRequired("esint")
1206 // is false) or if esint is used, since esint redefines all relevant
1207 // integral symbols from wasysym and amsmath.
1208 // See http://www.lyx.org/trac/ticket/1942
1209 if (mustProvide("wasysym") &&
1210 params_.use_package("wasysym") != BufferParams::package_off &&
1211 (params_.use_package("esint") != BufferParams::package_off || !isRequired("esint")))
1212 packages << "\\usepackage{wasysym}\n";
1214 // esint must be after amsmath (and packages requiring amsmath, like mhchem)
1215 // and wasysym, since it will redeclare inconsistent integral symbols
1216 if (mustProvide("esint") &&
1217 params_.use_package("esint") != BufferParams::package_off)
1218 packages << "\\usepackage{esint}\n";
1220 // Known bibliography packages (simple \usepackage{package})
1221 for (int i = 0; i < nb_bibliofeatures; ++i) {
1222 if (mustProvide(bibliofeatures[i]))
1223 packages << "\\usepackage{"
1224 << bibliofeatures[i] << "}\n";
1227 // Compatibility between achicago and natbib
1228 if (mustProvide("achicago") && mustProvide("natbib"))
1229 packages << "\\let\\achicagobib\\thebibliography\n";
1232 // Some classes load natbib themselves, but still allow (or even require)
1233 // plain numeric citations (ReVTeX is such a case, see bug 5182).
1234 // This special case is indicated by the "natbib-internal" key.
1235 if (mustProvide("natbib")
1236 && !isProvided("natbib-internal")
1237 && !isProvided("biblatex")
1238 && !isProvided("biblatex-natbib")
1239 && !isProvided("jurabib")) {
1240 packages << "\\usepackage[";
1241 if (params_.citeEngineType() == ENGINE_TYPE_NUMERICAL)
1242 packages << "numbers";
1244 packages << "authoryear";
1245 if (!params_.biblio_opts.empty())
1246 packages << ',' << params_.biblio_opts;
1247 packages << "]{natbib}\n";
1250 // Compatibility between achicago and natbib
1251 if (mustProvide("achicago") && mustProvide("natbib")) {
1252 packages << "\\let\\thebibliography\\achicagobib\n";
1253 packages << "\\let\\SCcite\\astroncite\n";
1254 packages << "\\let\\UnexpandableProtect\\protect\n";
1257 // jurabib -- we need version 0.6 at least.
1258 if (mustProvide("jurabib")
1259 && !isProvided("natbib-internal")
1260 && !isProvided("natbib")
1261 && !isProvided("biblatex")
1262 && !isProvided("biblatex-natbib")) {
1263 packages << "\\usepackage";
1264 if (!params_.biblio_opts.empty())
1265 packages << '[' << params_.biblio_opts << ']';
1266 packages << "{jurabib}[2004/01/25]\n";
1269 // opcit -- we pass custombst as we output \bibliographystyle ourselves
1270 if (mustProvide("opcit")) {
1271 if (isRequired("hyperref"))
1272 packages << "\\usepackage[custombst,hyperref]{opcit}\n";
1274 packages << "\\usepackage[custombst]{opcit}\n";
1277 // xargs -- we need version 1.09 at least
1278 if (mustProvide("xargs"))
1279 packages << "\\usepackage{xargs}[2008/03/08]\n";
1281 if (mustProvide("xy"))
1282 packages << "\\usepackage[all]{xy}\n";
1284 if (mustProvide("feyn"))
1285 packages << "\\usepackage{feyn}\n"; //Diagram
1287 if (mustProvide("ulem"))
1288 packages << "\\PassOptionsToPackage{normalem}{ulem}\n"
1289 "\\usepackage{ulem}\n";
1291 if (mustProvide("nomencl")) {
1292 // Make it work with the new and old version of the package,
1293 // but don't use the compatibility option since it is
1294 // incompatible to other packages.
1295 packages << "\\usepackage{nomencl}\n"
1296 "% the following is useful when we have the old nomencl.sty package\n"
1297 "\\providecommand{\\printnomenclature}{\\printglossary}\n"
1298 "\\providecommand{\\makenomenclature}{\\makeglossary}\n"
1299 "\\makenomenclature\n";
1302 // fixltx2e provides subscript
1303 if (mustProvide("subscript") && !isRequired("fixltx2e"))
1304 packages << "\\usepackage{subscript}\n";
1306 // footmisc must be loaded after setspace
1307 // Set options here, load the package after the user preamble to
1308 // avoid problems with manual loaded footmisc.
1309 if (mustProvide("footmisc"))
1310 packages << "\\PassOptionsToPackage{stable}{footmisc}\n";
1312 if (mustProvide("microtype")){
1313 packages << "\\usepackage{microtype}\n";
1316 return packages.str();
1320 TexString LaTeXFeatures::getMacros() const
1322 otexstringstream macros;
1324 if (!preamble_snippets_.empty()) {
1326 macros << getPreambleSnippets();
1329 if (mustProvide("xetexdashbreakstate"))
1330 macros << "\\XeTeXdashbreakstate 0" << '\n';
1332 if (mustProvide("papersize")) {
1333 if (runparams_.flavor == OutputParams::LATEX
1334 || runparams_.flavor == OutputParams::DVILUATEX)
1335 macros << papersizedvi_def << '\n';
1336 else if (runparams_.flavor == OutputParams::LUATEX)
1337 macros << papersizepdflua_def << '\n';
1339 macros << papersizepdf_def << '\n';
1342 if (mustProvide("LyX")) {
1343 if (isRequired("hyperref"))
1344 macros << lyx_hyperref_def << '\n';
1346 macros << lyx_def << '\n';
1349 if (mustProvide("noun"))
1350 macros << noun_def << '\n';
1352 if (mustProvide("lyxarrow"))
1353 macros << lyxarrow_def << '\n';
1355 if (mustProvide("lyxzerowidthspace"))
1356 macros << lyxZWSP_def << '\n';
1358 if (!usePolyglossia() && mustProvide("textgreek")) {
1359 // ensure LGR font encoding is defined also if fontenc is not loaded by LyX
1360 if (params_.main_font_encoding() == "default")
1361 macros << textgreek_LGR_def;
1362 macros << textgreek_def << '\n';
1365 if (!usePolyglossia() && mustProvide("textcyr")) {
1366 // ensure T2A font encoding is set up also if fontenc is not loaded by LyX
1367 if (params_.main_font_encoding() == "default")
1368 macros << textcyr_T2A_def;
1369 macros << textcyr_def << '\n';
1372 // non-standard text accents:
1373 if (mustProvide("textcommaabove") || mustProvide("textcommaaboveright") ||
1374 mustProvide("textcommabelow") || mustProvide("textbaltic"))
1375 macros << lyxaccent_def;
1377 if (mustProvide("textcommabelow") || mustProvide("textbaltic"))
1378 macros << textcommabelow_def << '\n';
1380 if (mustProvide("textcommaabove") || mustProvide("textbaltic"))
1381 macros << textcommaabove_def << '\n';
1383 if (mustProvide("textcommaaboveright"))
1384 macros << textcommaaboveright_def << '\n';
1386 if (mustProvide("textbaltic"))
1387 macros << textbaltic_def << '\n';
1389 // split-level fractions
1390 if (mustProvide("xfrac") || mustProvide("smallLetterFrac"))
1391 macros << xfrac_def << '\n';
1393 if (mustProvide("smallLetterFrac"))
1394 macros << smallLetterFrac_def << '\n';
1396 if (mustProvide("lyxmathsym"))
1397 macros << lyxmathsym_def << '\n';
1399 if (mustProvide("cedilla"))
1400 macros << cedilla_def << '\n';
1402 if (mustProvide("subring"))
1403 macros << subring_def << '\n';
1405 if (mustProvide("subdot"))
1406 macros << subdot_def << '\n';
1408 if (mustProvide("subhat"))
1409 macros << subhat_def << '\n';
1411 if (mustProvide("subtilde"))
1412 macros << subtilde_def << '\n';
1414 if (mustProvide("dacute"))
1415 macros << dacute_def << '\n';
1417 if (mustProvide("tipasymb"))
1418 macros << tipasymb_def << '\n';
1420 if (mustProvide("dgrave"))
1421 macros << dgrave_def << '\n';
1423 if (mustProvide("rcap"))
1424 macros << rcap_def << '\n';
1426 if (mustProvide("ogonek"))
1427 macros << ogonek_def << '\n';
1430 if (mustProvide("quotesinglbase"))
1431 macros << quotesinglbase_def << '\n';
1432 if (mustProvide("quotedblbase"))
1433 macros << quotedblbase_def << '\n';
1434 if (mustProvide("guilsinglleft"))
1435 macros << guilsinglleft_def << '\n';
1436 if (mustProvide("guilsinglright"))
1437 macros << guilsinglright_def << '\n';
1438 if (mustProvide("guillemotleft"))
1439 macros << guillemotleft_def << '\n';
1440 if (mustProvide("guillemotright"))
1441 macros << guillemotright_def << '\n';
1442 if (mustProvide("textquotedbl"))
1443 macros << textquotedbl_def << '\n';
1444 if (mustProvide("textquotesinglep")) {
1445 if (runparams_.flavor == OutputParams::XETEX)
1446 macros << textquotesinglep_xetex_def << '\n';
1448 macros << textquotesinglep_luatex_def << '\n';
1450 if (mustProvide("textquotedblp")) {
1451 if (runparams_.flavor == OutputParams::XETEX)
1452 macros << textquotedblp_xetex_def << '\n';
1454 macros << textquotedblp_luatex_def << '\n';
1458 if (mustProvide("binom") && !isRequired("amsmath"))
1459 macros << binom_def << '\n';
1460 if (mustProvide("mathcircumflex"))
1461 macros << mathcircumflex_def << '\n';
1464 if (mustProvide("ParagraphLeftIndent"))
1465 macros << paragraphleftindent_def;
1466 if (mustProvide("NeedLyXFootnoteCode"))
1467 macros << floatingfootnote_def;
1469 // some problems with tex->html converters
1470 if (mustProvide("NeedTabularnewline"))
1471 macros << tabularnewline_def;
1473 // greyed-out environment (note inset)
1474 // the color is specified in the routine
1475 // getColorOptions() to avoid LaTeX-package clashes
1476 if (mustProvide("lyxgreyedout"))
1477 macros << lyxgreyedout_def;
1479 if (mustProvide("lyxdot"))
1480 macros << lyxdot_def << '\n';
1483 getFloatDefinitions(macros);
1485 if (mustProvide("refstyle"))
1486 macros << lyxref_def << '\n';
1489 if (mustProvide("ct-dvipost"))
1490 macros << changetracking_dvipost_def;
1492 if (mustProvide("ct-xcolor-ulem")) {
1493 streamsize const prec = macros.os().precision(2);
1495 RGBColor cadd = rgbFromHexName(lcolor.getX11Name(Color_addedtext));
1496 macros << "\\providecolor{lyxadded}{rgb}{"
1497 << cadd.r / 255.0 << ',' << cadd.g / 255.0 << ',' << cadd.b / 255.0 << "}\n";
1499 RGBColor cdel = rgbFromHexName(lcolor.getX11Name(Color_deletedtext));
1500 macros << "\\providecolor{lyxdeleted}{rgb}{"
1501 << cdel.r / 255.0 << ',' << cdel.g / 255.0 << ',' << cdel.b / 255.0 << "}\n";
1503 macros.os().precision(prec);
1505 if (isRequired("hyperref"))
1506 macros << changetracking_xcolor_ulem_hyperref_def;
1508 macros << changetracking_xcolor_ulem_def;
1511 if (mustProvide("ct-tikz-math-sout"))
1512 macros << changetracking_tikz_math_sout_def;
1514 if (mustProvide("ct-none"))
1515 macros << changetracking_none_def;
1517 if (mustProvide("rtloutputdblcol"))
1518 macros << rtloutputdblcol_def;
1520 if (mustProvide("lyxmintcaption"))
1521 macros << lyxmintcaption_def;
1523 return macros.release();
1527 docstring const LaTeXFeatures::getBabelPresettings() const
1529 odocstringstream tmp;
1531 for (Language const * lang : UsedLanguages_)
1532 if (!lang->babel_presettings().empty())
1533 tmp << lang->babel_presettings() << '\n';
1534 if (!params_.language->babel_presettings().empty())
1535 tmp << params_.language->babel_presettings() << '\n';
1537 if (!contains(tmp.str(), '@'))
1540 return "\\makeatletter\n" + tmp.str() + "\\makeatother\n";
1544 docstring const LaTeXFeatures::getBabelPostsettings() const
1546 odocstringstream tmp;
1548 for (Language const * lang : UsedLanguages_)
1549 if (!lang->babel_postsettings().empty())
1550 tmp << lang->babel_postsettings() << '\n';
1551 if (!params_.language->babel_postsettings().empty())
1552 tmp << params_.language->babel_postsettings() << '\n';
1554 if (!contains(tmp.str(), '@'))
1557 return "\\makeatletter\n" + tmp.str() + "\\makeatother\n";
1561 bool LaTeXFeatures::needBabelLangOptions() const
1563 if (!lyxrc.language_global_options || params_.language->asBabelOptions())
1566 LanguageList::const_iterator it = UsedLanguages_.begin();
1567 LanguageList::const_iterator end = UsedLanguages_.end();
1568 for (; it != end; ++it)
1569 if ((*it)->asBabelOptions())
1576 string const LaTeXFeatures::loadAMSPackages() const
1580 if (mustProvide("amsmath")
1581 && params_.use_package("amsmath") != BufferParams::package_off) {
1582 tmp << "\\usepackage{amsmath}\n";
1584 // amsbsy and amstext are already provided by amsmath
1585 if (mustProvide("amsbsy"))
1586 tmp << "\\usepackage{amsbsy}\n";
1587 if (mustProvide("amstext"))
1588 tmp << "\\usepackage{amstext}\n";
1591 if (mustProvide("amsthm"))
1592 tmp << "\\usepackage{amsthm}\n";
1594 if (mustProvide("amssymb")
1595 && params_.use_package("amssymb") != BufferParams::package_off)
1596 tmp << "\\usepackage{amssymb}\n";
1602 docstring const LaTeXFeatures::getTClassPreamble() const
1604 // the text class specific preamble
1605 DocumentClass const & tclass = params_.documentClass();
1606 odocstringstream tcpreamble;
1608 tcpreamble << tclass.preamble();
1610 list<docstring>::const_iterator cit = usedLayouts_.begin();
1611 list<docstring>::const_iterator end = usedLayouts_.end();
1612 for (; cit != end; ++cit)
1613 // For InPreamble layouts, we output the preamble stuff earlier
1614 // (before the layouts). See Paragraph::Private::validate.
1615 if (!tclass[*cit].inpreamble)
1616 tcpreamble << tclass[*cit].preamble();
1618 cit = usedInsetLayouts_.begin();
1619 end = usedInsetLayouts_.end();
1620 TextClass::InsetLayouts const & ils = tclass.insetLayouts();
1621 for (; cit != end; ++cit) {
1622 TextClass::InsetLayouts::const_iterator it = ils.find(*cit);
1623 if (it == ils.end())
1625 tcpreamble << it->second.preamble();
1628 return tcpreamble.str();
1632 docstring const LaTeXFeatures::getTClassHTMLPreamble() const
1634 DocumentClass const & tclass = params_.documentClass();
1635 odocstringstream tcpreamble;
1637 tcpreamble << tclass.htmlpreamble();
1639 list<docstring>::const_iterator cit = usedLayouts_.begin();
1640 list<docstring>::const_iterator end = usedLayouts_.end();
1641 for (; cit != end; ++cit)
1642 tcpreamble << tclass[*cit].htmlpreamble();
1644 cit = usedInsetLayouts_.begin();
1645 end = usedInsetLayouts_.end();
1646 TextClass::InsetLayouts const & ils = tclass.insetLayouts();
1647 for (; cit != end; ++cit) {
1648 TextClass::InsetLayouts::const_iterator it = ils.find(*cit);
1649 if (it == ils.end())
1651 tcpreamble << it->second.htmlpreamble();
1654 return tcpreamble.str();
1658 docstring const LaTeXFeatures::getTClassHTMLStyles() const
1660 DocumentClass const & tclass = params_.documentClass();
1661 odocstringstream tcpreamble;
1663 if (mustProvide("noun"))
1664 tcpreamble << lyxnoun_style;
1665 // this isn't exact, but it won't hurt that much if it
1667 if (mustProvide("ulem"))
1668 tcpreamble << lyxstrikeout_style;
1670 tcpreamble << tclass.htmlstyles();
1672 list<docstring>::const_iterator cit = usedLayouts_.begin();
1673 list<docstring>::const_iterator end = usedLayouts_.end();
1674 for (; cit != end; ++cit)
1675 tcpreamble << tclass[*cit].htmlstyle();
1677 cit = usedInsetLayouts_.begin();
1678 end = usedInsetLayouts_.end();
1679 TextClass::InsetLayouts const & ils = tclass.insetLayouts();
1680 for (; cit != end; ++cit) {
1681 TextClass::InsetLayouts::const_iterator it = ils.find(*cit);
1682 if (it == ils.end())
1684 tcpreamble << it->second.htmlstyle();
1687 return tcpreamble.str();
1693 docstring const getFloatI18nPreamble(docstring const & type,
1694 docstring const & name, Language const * lang,
1695 Encoding const & enc, bool const polyglossia)
1697 // Check whether name can be encoded in the buffer encoding
1698 bool encodable = true;
1699 for (size_t i = 0; i < name.size(); ++i) {
1700 if (!enc.encodable(name[i])) {
1706 docstring const language = polyglossia ? from_ascii(lang->polyglossia())
1707 : from_ascii(lang->babel());
1708 docstring const langenc = from_ascii(lang->encoding()->iconvName());
1709 docstring const texenc = from_ascii(lang->encoding()->latexName());
1710 docstring const bufenc = from_ascii(enc.iconvName());
1711 docstring const s1 = docstring(1, 0xF0000);
1712 docstring const s2 = docstring(1, 0xF0001);
1713 docstring const translated = encodable ? name
1714 : from_ascii("\\inputencoding{") + texenc + from_ascii("}")
1715 + s1 + langenc + s2 + name + s1 + bufenc + s2;
1717 odocstringstream os;
1718 os << "\\addto\\captions" << language
1719 << "{\\renewcommand{\\" << type << "name}{" << translated << "}}\n";
1724 docstring const i18npreamble(docstring const & templ, Language const * lang,
1725 Encoding const & enc, bool const polyglossia,
1726 bool const need_fixedwidth)
1731 string preamble = polyglossia ?
1732 subst(to_utf8(templ), "$$lang", lang->polyglossia()) :
1733 subst(to_utf8(templ), "$$lang", lang->babel());
1735 string const langenc = lang->encoding()->iconvName();
1736 string const texenc = lang->encoding()->latexName();
1737 string const bufenc = enc.iconvName();
1738 Encoding const * testenc(&enc);
1739 bool lang_fallback = false;
1740 bool ascii_fallback = false;
1741 if (need_fixedwidth && !enc.hasFixedWidth()) {
1742 if (lang->encoding()->hasFixedWidth()) {
1743 testenc = lang->encoding();
1744 lang_fallback = true;
1746 // We need a fixed width encoding, but both the buffer
1747 // encoding and the language encoding are variable
1748 // width. As a last fallback, try to convert to pure
1749 // ASCII using the LaTeX commands defined in unicodesymbols.
1750 testenc = encodings.fromLyXName("ascii");
1753 ascii_fallback = true;
1756 // First and second character of plane 15 (Private Use Area)
1757 string const s1 = "\xf3\xb0\x80\x80"; // U+F0000
1758 string const s2 = "\xf3\xb0\x80\x81"; // U+F0001
1760 // lyx::regex is not unicode-safe.
1761 // Should use QRegExp or (boost::u32regex, but that requires ICU)
1762 static regex const reg("_\\(([^\\)]+)\\)");
1764 while (regex_search(preamble, sub, reg)) {
1765 string const key = sub.str(1);
1766 docstring const name = lang->translateLayout(key);
1767 // Check whether name can be encoded in the buffer encoding
1768 bool encodable = true;
1769 for (size_t i = 0; i < name.size() && encodable; ++i)
1770 if (!testenc->encodable(name[i]))
1773 if (encodable && !lang_fallback)
1774 translated = to_utf8(name);
1775 else if (ascii_fallback)
1776 translated = to_ascii(testenc->latexString(name).first);
1778 translated = "\\inputencoding{" + texenc + "}"
1779 + s1 + langenc + s2 + to_utf8(name)
1781 preamble = subst(preamble, sub.str(), translated);
1783 return from_utf8(preamble);
1789 docstring const LaTeXFeatures::getTClassI18nPreamble(bool use_babel,
1790 bool use_polyglossia, bool use_minted) const
1792 DocumentClass const & tclass = params_.documentClass();
1793 // collect preamble snippets in a set to prevent multiple identical
1794 // commands (would happen if e.g. both theorem and theorem* are used)
1795 set<docstring> snippets;
1796 typedef LanguageList::const_iterator lang_it;
1797 lang_it const lbeg = UsedLanguages_.begin();
1798 lang_it const lend = UsedLanguages_.end();
1799 list<docstring>::const_iterator cit = usedLayouts_.begin();
1800 list<docstring>::const_iterator end = usedLayouts_.end();
1801 for (; cit != end; ++cit) {
1802 // language dependent commands (once per document)
1803 snippets.insert(i18npreamble(tclass[*cit].langpreamble(),
1804 buffer().language(),
1805 buffer().params().encoding(),
1806 use_polyglossia, false));
1807 // commands for language changing (for multilanguage documents)
1808 if ((use_babel || use_polyglossia) && !UsedLanguages_.empty()) {
1809 snippets.insert(i18npreamble(
1810 tclass[*cit].babelpreamble(),
1811 buffer().language(),
1812 buffer().params().encoding(),
1813 use_polyglossia, false));
1814 for (lang_it lit = lbeg; lit != lend; ++lit)
1815 snippets.insert(i18npreamble(
1816 tclass[*cit].babelpreamble(),
1818 buffer().params().encoding(),
1819 use_polyglossia, false));
1822 if ((use_babel || use_polyglossia) && !UsedLanguages_.empty()) {
1823 FloatList const & floats = params_.documentClass().floats();
1824 UsedFloats::const_iterator fit = usedFloats_.begin();
1825 UsedFloats::const_iterator fend = usedFloats_.end();
1826 for (; fit != fend; ++fit) {
1827 Floating const & fl = floats.getType(fit->first);
1828 // we assume builtin floats are translated
1829 if (fl.isPredefined())
1831 docstring const type = from_ascii(fl.floattype());
1832 docstring const flname = from_utf8(fl.name());
1833 docstring name = buffer().language()->translateLayout(fl.name());
1834 // only request translation if we have a real translation
1835 // (that differs from the source)
1837 snippets.insert(getFloatI18nPreamble(
1838 type, name, buffer().language(),
1839 buffer().params().encoding(),
1841 for (lang_it lit = lbeg; lit != lend; ++lit) {
1842 string const code = (*lit)->code();
1843 name = (*lit)->translateLayout(fl.name());
1844 // we assume we have a suitable translation if
1845 // either the language is English (we need to
1846 // translate into English if English is a secondary
1847 // language) or if translateIfPossible returns
1848 // something different to the English source.
1849 bool const have_translation =
1850 (flname != name || contains(code, "en"));
1851 if (have_translation)
1852 snippets.insert(getFloatI18nPreamble(
1854 buffer().params().encoding(),
1860 cit = usedInsetLayouts_.begin();
1861 end = usedInsetLayouts_.end();
1862 TextClass::InsetLayouts const & ils = tclass.insetLayouts();
1863 for (; cit != end; ++cit) {
1864 TextClass::InsetLayouts::const_iterator it = ils.find(*cit);
1865 if (it == ils.end())
1867 // The listings package does not work with variable width
1868 // encodings, only with fixed width encodings. Therefore we
1869 // need to force a fixed width encoding for
1870 // \lstlistlistingname and \lstlistingname (bug 9382).
1871 // This needs to be consistent with InsetListings::latex().
1872 bool const need_fixedwidth = !use_minted &&
1873 !runparams_.isFullUnicode() &&
1874 it->second.fixedwidthpreambleencoding();
1875 // language dependent commands (once per document)
1876 snippets.insert(i18npreamble(it->second.langpreamble(),
1877 buffer().language(),
1878 buffer().params().encoding(),
1879 use_polyglossia, need_fixedwidth));
1880 // commands for language changing (for multilanguage documents)
1881 if ((use_babel || use_polyglossia) && !UsedLanguages_.empty()) {
1882 snippets.insert(i18npreamble(
1883 it->second.babelpreamble(),
1884 buffer().language(),
1885 buffer().params().encoding(),
1886 use_polyglossia, need_fixedwidth));
1887 for (lang_it lit = lbeg; lit != lend; ++lit)
1888 snippets.insert(i18npreamble(
1889 it->second.babelpreamble(),
1891 buffer().params().encoding(),
1892 use_polyglossia, need_fixedwidth));
1896 odocstringstream tcpreamble;
1897 set<docstring>::const_iterator const send = snippets.end();
1898 set<docstring>::const_iterator it = snippets.begin();
1899 for (; it != send; ++it)
1901 return tcpreamble.str();
1905 docstring const LaTeXFeatures::getLyXSGMLEntities() const
1907 // Definition of entities used in the document that are LyX related.
1908 odocstringstream entities;
1910 if (mustProvide("lyxarrow")) {
1911 entities << "<!ENTITY lyxarrow \"->\">" << '\n';
1914 return entities.str();
1918 docstring const LaTeXFeatures::getIncludedFiles(string const & fname) const
1920 odocstringstream sgmlpreamble;
1922 docstring const basename(from_utf8(onlyPath(fname)));
1924 FileMap::const_iterator end = IncludedFiles_.end();
1925 for (FileMap::const_iterator fi = IncludedFiles_.begin();
1928 sgmlpreamble << "\n<!ENTITY " << fi->first
1929 << (isSGMLFileName(fi->second) ? " SYSTEM \"" : " \"")
1930 << makeRelPath(from_utf8(fi->second), basename) << "\">";
1932 return sgmlpreamble.str();
1936 void LaTeXFeatures::showStruct() const
1938 lyxerr << "LyX needs the following commands when LaTeXing:"
1939 << "\n***** Packages:" << getPackages()
1940 << "\n***** Macros:" << to_utf8(getMacros().str)
1941 << "\n***** Textclass stuff:" << to_utf8(getTClassPreamble())
1942 << "\n***** done." << endl;
1946 Buffer const & LaTeXFeatures::buffer() const
1952 void LaTeXFeatures::setBuffer(Buffer const & buffer)
1958 BufferParams const & LaTeXFeatures::bufferParams() const
1964 void LaTeXFeatures::getFloatDefinitions(otexstream & os) const
1966 FloatList const & floats = params_.documentClass().floats();
1968 // Here we will output the code to create the needed float styles.
1969 // We will try to do this as minimal as possible.
1970 // \floatstyle{ruled}
1971 // \newfloat{algorithm}{htbp}{loa}
1972 // \providecommand{\algorithmname}{Algorithm}
1973 // \floatname{algorithm}{\protect\algorithmname}
1974 UsedFloats::const_iterator cit = usedFloats_.begin();
1975 UsedFloats::const_iterator end = usedFloats_.end();
1976 for (; cit != end; ++cit) {
1977 Floating const & fl = floats.getType(cit->first);
1979 // For builtin floats we do nothing.
1980 if (fl.isPredefined())
1983 // We have to special case "table" and "figure"
1984 if (fl.floattype() == "tabular" || fl.floattype() == "figure") {
1985 // Output code to modify "table" or "figure"
1986 // but only if builtin == false
1987 // and that have to be true at this point in the
1989 docstring const type = from_ascii(fl.floattype());
1990 docstring const placement = from_ascii(fl.placement());
1991 docstring const style = from_ascii(fl.style());
1992 if (!style.empty()) {
1993 os << "\\floatstyle{" << style << "}\n"
1994 << "\\restylefloat{" << type << "}\n";
1996 if (!placement.empty()) {
1997 os << "\\floatplacement{" << type << "}{"
1998 << placement << "}\n";
2001 // The other non builtin floats.
2003 docstring const type = from_ascii(fl.floattype());
2004 docstring const placement = from_ascii(fl.placement());
2005 docstring const ext = from_ascii(fl.ext());
2006 docstring const within = from_ascii(fl.within());
2007 docstring const style = from_ascii(fl.style());
2008 docstring const name =
2009 buffer().language()->translateLayout(fl.name());
2010 os << "\\floatstyle{" << style << "}\n"
2011 << "\\newfloat{" << type << "}{" << placement
2012 << "}{" << ext << '}';
2013 if (!within.empty())
2014 os << '[' << within << ']';
2016 << "\\providecommand{\\" << type << "name}{"
2018 << "\\floatname{" << type << "}{\\protect\\"
2019 << type << "name}\n";
2021 // What missing here is to code to minimalize the code
2022 // output so that the same floatstyle will not be
2023 // used several times, when the same style is still in
2027 // The subfig package is loaded later
2028 os << "\n\\AtBeginDocument{\\newsubfloat{" << from_ascii(fl.floattype()) << "}}\n";
2033 void LaTeXFeatures::resolveAlternatives()
2035 for (Features::iterator it = features_.begin(); it != features_.end();) {
2036 if (contains(*it, '|')) {
2037 vector<string> const alternatives = getVectorFromString(*it, "|");
2038 vector<string>::const_iterator const end = alternatives.end();
2039 vector<string>::const_iterator ita = alternatives.begin();
2040 // Is any alternative already required? => use that
2041 for (; ita != end; ++ita) {
2042 if (isRequired(*ita))
2045 // Is any alternative available? => use the first one
2048 for (ita = alternatives.begin(); ita != end; ++ita) {
2049 if (isAvailable(*ita)) {
2055 // This will not work, but not requiring something
2056 // would be more confusing
2058 require(alternatives.front());
2059 features_.erase(it);
2060 it = features_.begin();
2067 void LaTeXFeatures::expandMultiples()
2069 for (Features::iterator it = features_.begin(); it != features_.end();) {
2070 if (contains(*it, ',')) {
2071 vector<string> const multiples = getVectorFromString(*it, ",");
2072 vector<string>::const_iterator const end = multiples.end();
2073 vector<string>::const_iterator itm = multiples.begin();
2074 // Do nothing if any multiple is already required
2075 for (; itm != end; ++itm) {
2076 if (!isRequired(*itm))
2079 features_.erase(it);
2080 it = features_.begin();