2 * \file output_latex.cpp
3 * This file is part of LyX, the document processor.
4 * Licence details can be found in the file COPYING.
6 * \author Lars Gullik Bjønnes
8 * Full author contact details are available in file CREDITS.
13 #include "output_latex.h"
16 #include "BufferParams.h"
19 #include "InsetList.h"
23 #include "OutputParams.h"
24 #include "Paragraph.h"
25 #include "ParagraphParameters.h"
26 #include "texstream.h"
27 #include "TextClass.h"
29 #include "insets/InsetBibitem.h"
30 #include "insets/InsetArgument.h"
32 #include "frontends/alert.h"
34 #include "support/lassert.h"
35 #include "support/convert.h"
36 #include "support/debug.h"
37 #include "support/lstrings.h"
38 #include "support/lyxalgo.h"
39 #include "support/textutils.h"
40 #include "support/gettext.h"
42 #include <QThreadStorage>
48 using namespace lyx::support;
64 OutputState() : open_encoding_(none), cjk_inherited_(0),
65 prev_env_language_(0), nest_level_(0)
68 OpenEncoding open_encoding_;
70 Language const * prev_env_language_;
72 stack<int> lang_switch_depth_; // Both are always empty when
73 stack<string> open_polyglossia_lang_; // not using polyglossia
77 OutputState * getOutputState()
79 // FIXME An instance of OutputState should be kept around for each export
80 // instead of using local thread storage
81 static QThreadStorage<OutputState *> outputstate;
82 if (!outputstate.hasLocalData())
83 outputstate.setLocalData(new OutputState);
84 return outputstate.localData();
88 string const & openPolyglossiaLang(OutputState const * state)
90 // Return a reference to the last active language opened with
91 // polyglossia. If none or when using babel, return a reference
92 // to an empty string.
94 static string const empty;
96 return state->open_polyglossia_lang_.empty()
98 : state->open_polyglossia_lang_.top();
102 bool atSameLastLangSwitchDepth(OutputState const * state)
104 // Return true if the actual nest level is the same at which the
105 // language was switched when using polyglossia. Instead, return
106 // always true when using babel.
108 return state->lang_switch_depth_.size() == 0
110 : abs(state->lang_switch_depth_.top()) == state->nest_level_;
114 bool isLocalSwitch(OutputState const * state)
116 // Return true if the language was opened by the \text<lang> command.
118 return state->lang_switch_depth_.size()
119 && state->lang_switch_depth_.top() < 0;
123 bool langOpenedAtThisLevel(OutputState const * state)
125 // Return true if the language was opened at the current nesting level.
127 return state->lang_switch_depth_.size()
128 && abs(state->lang_switch_depth_.top()) == state->nest_level_;
132 string const getPolyglossiaEnvName(Language const * lang)
134 string result = lang->polyglossia();
135 if (result == "arabic")
136 // exceptional spelling; see polyglossia docs.
142 string const getPolyglossiaBegin(string const & lang_begin_command,
143 string const & lang, string const & opts)
147 result = subst(lang_begin_command, "$$lang", lang);
148 string options = opts.empty() ?
149 string() : "[" + opts + "]";
150 result = subst(result, "$$opts", options);
156 struct TeXEnvironmentData
159 Layout const * style;
160 Language const * par_language;
161 Encoding const * prev_encoding;
162 bool leftindent_open;
166 static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
168 ParagraphList::const_iterator pit,
170 OutputParams const & runparams)
172 TeXEnvironmentData data;
174 BufferParams const & bparams = buf.params();
176 // FIXME This test should not be necessary.
177 // We should perhaps issue an error if it is.
178 Layout const & style = text.inset().forcePlainLayout() ?
179 bparams.documentClass().plainLayout() : pit->layout();
181 ParagraphList const & paragraphs = text.paragraphs();
182 ParagraphList::const_iterator const priorpit =
183 pit == paragraphs.begin() ? pit : prev(pit, 1);
185 OutputState * state = getOutputState();
186 bool const use_prev_env_language = state->prev_env_language_ != 0
187 && priorpit->layout().isEnvironment()
188 && (priorpit->getDepth() > pit->getDepth()
189 || (priorpit->getDepth() == pit->getDepth()
190 && priorpit->layout() != pit->layout()));
192 data.prev_encoding = runparams.encoding;
193 data.par_language = pit->getParLanguage(bparams);
194 Language const * const doc_language = bparams.language;
195 Language const * const prev_par_language =
196 (pit != paragraphs.begin())
197 ? (use_prev_env_language ? state->prev_env_language_
198 : priorpit->getParLanguage(bparams))
201 bool const use_polyglossia = runparams.use_polyglossia;
202 string const par_lang = use_polyglossia ?
203 getPolyglossiaEnvName(data.par_language) : data.par_language->babel();
204 string const prev_par_lang = use_polyglossia ?
205 getPolyglossiaEnvName(prev_par_language) : prev_par_language->babel();
206 string const doc_lang = use_polyglossia ?
207 getPolyglossiaEnvName(doc_language) : doc_language->babel();
208 string const lang_begin_command = use_polyglossia ?
209 "\\begin{$$lang}" : lyxrc.language_command_begin;
210 string const lang_end_command = use_polyglossia ?
211 "\\end{$$lang}" : lyxrc.language_command_end;
213 // For polyglossia, switch language outside of environment, if possible.
214 if (par_lang != prev_par_lang) {
215 if (!lang_end_command.empty() &&
216 prev_par_lang != doc_lang &&
217 atSameLastLangSwitchDepth(state) &&
218 !prev_par_lang.empty()) {
219 os << from_ascii(subst(
223 // the '%' is necessary to prevent unwanted whitespace
226 popPolyglossiaLang();
229 // If no language was explicitly opened and we are using
230 // polyglossia, then the current polyglossia language is
231 // the document language.
232 string const & pol_lang = use_polyglossia
233 && state->lang_switch_depth_.size()
234 ? openPolyglossiaLang(state)
237 if ((lang_end_command.empty() ||
238 par_lang != doc_lang ||
239 par_lang != pol_lang) &&
241 string bc = use_polyglossia ?
242 getPolyglossiaBegin(lang_begin_command, par_lang,
243 data.par_language->polyglossiaOpts())
244 : subst(lang_begin_command, "$$lang", par_lang);
246 // the '%' is necessary to prevent unwanted whitespace
249 pushPolyglossiaLang(par_lang);
253 data.leftindent_open = false;
254 if (!pit->params().leftIndent().zero()) {
255 os << "\\begin{LyXParagraphLeftIndent}{"
256 << from_ascii(pit->params().leftIndent().asLatexString())
258 data.leftindent_open = true;
261 if (style.isEnvironment())
262 state->nest_level_ += 1;
264 if (style.isEnvironment() && !style.latexname().empty()) {
265 os << "\\begin{" << from_ascii(style.latexname()) << '}';
266 if (!style.latexargs().empty()) {
267 OutputParams rp = runparams;
268 rp.local_font = &pit->getFirstFontSettings(bparams);
269 latexArgInsets(paragraphs, pit, os, rp, style.latexargs());
271 if (style.latextype == LATEX_LIST_ENVIRONMENT) {
273 << pit->params().labelWidthString()
275 } else if (style.labeltype == LABEL_BIBLIO) {
276 if (pit->params().labelWidthString().empty())
277 os << '{' << bibitemWidest(buf, runparams) << "}\n";
280 << pit->params().labelWidthString()
283 os << from_ascii(style.latexparam()) << '\n';
287 // in multilingual environments, the CJK tags have to be nested properly
288 data.cjk_nested = false;
289 if (data.par_language->encoding()->package() == Encoding::CJK &&
290 state->open_encoding_ != CJK && pit->isMultiLingual(bparams)) {
291 if (prev_par_language->encoding()->package() == Encoding::CJK)
292 os << "\\begin{CJK}{" << from_ascii(data.par_language->encoding()->latexName())
293 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
294 state->open_encoding_ = CJK;
295 data.cjk_nested = true;
301 static void finishEnvironment(otexstream & os, OutputParams const & runparams,
302 TeXEnvironmentData const & data)
304 OutputState * state = getOutputState();
305 // BufferParams const & bparams = buf.params(); // FIXME: for speedup shortcut below, would require passing of "buf" as argument
306 if (state->open_encoding_ == CJK && data.cjk_nested) {
307 // We need to close the encoding even if it does not change
308 // to do correct environment nesting
309 os << "\\end{CJK}\n";
310 state->open_encoding_ = none;
313 if (data.style->isEnvironment()) {
315 // Close any polyglossia language opened at this nest level
316 if (runparams.use_polyglossia) {
317 while (langOpenedAtThisLevel(state)) {
318 if (isLocalSwitch(state)) {
322 << openPolyglossiaLang(state)
325 popPolyglossiaLang();
328 state->nest_level_ -= 1;
329 string const & name = data.style->latexname();
331 os << "\\end{" << from_ascii(name) << "}\n";
332 state->prev_env_language_ = data.par_language;
333 if (runparams.encoding != data.prev_encoding) {
334 runparams.encoding = data.prev_encoding;
335 os << setEncoding(data.prev_encoding->iconvName());
339 if (data.leftindent_open) {
340 os << breakln << "\\end{LyXParagraphLeftIndent}\n";
341 state->prev_env_language_ = data.par_language;
342 if (runparams.encoding != data.prev_encoding) {
343 runparams.encoding = data.prev_encoding;
344 os << setEncoding(data.prev_encoding->iconvName());
348 // Check whether we should output a blank line after the environment
349 if (!data.style->nextnoindent)
354 void TeXEnvironment(Buffer const & buf, Text const & text,
355 OutputParams const & runparams,
356 pit_type & pit, otexstream & os)
358 ParagraphList const & paragraphs = text.paragraphs();
359 ParagraphList::const_iterator par = paragraphs.constIterator(pit);
360 LYXERR(Debug::LATEX, "TeXEnvironment for paragraph " << pit);
362 Layout const & current_layout = par->layout();
363 depth_type const current_depth = par->params().depth();
364 Length const & current_left_indent = par->params().leftIndent();
366 // This is for debugging purpose at the end.
367 pit_type const par_begin = pit;
368 for (; pit < runparams.par_end; ++pit) {
369 ParagraphList::const_iterator par = paragraphs.constIterator(pit);
371 // check first if this is an higher depth paragraph.
372 bool go_out = (par->params().depth() < current_depth);
373 if (par->params().depth() == current_depth) {
374 // This environment is finished.
375 go_out |= (par->layout() != current_layout);
376 go_out |= (par->params().leftIndent() != current_left_indent);
379 // nothing to do here, restore pit and go out.
384 if (par->layout() == current_layout
385 && par->params().depth() == current_depth
386 && par->params().leftIndent() == current_left_indent) {
387 // We are still in the same environment so TeXOnePar and continue;
388 TeXOnePar(buf, text, pit, os, runparams);
392 // We are now in a deeper environment.
393 // Either par->layout() != current_layout
394 // Or par->params().depth() > current_depth
395 // Or par->params().leftIndent() != current_left_indent)
397 // FIXME This test should not be necessary.
398 // We should perhaps issue an error if it is.
399 bool const force_plain_layout = text.inset().forcePlainLayout();
400 Layout const & style = force_plain_layout
401 ? buf.params().documentClass().plainLayout()
404 if (!style.isEnvironment()) {
405 // This is a standard paragraph, no need to call TeXEnvironment.
406 TeXOnePar(buf, text, pit, os, runparams);
410 // This is a new environment.
411 TeXEnvironmentData const data =
412 prepareEnvironment(buf, text, par, os, runparams);
413 // Recursive call to TeXEnvironment!
414 TeXEnvironment(buf, text, runparams, pit, os);
415 finishEnvironment(os, runparams, data);
418 if (pit != runparams.par_end)
419 LYXERR(Debug::LATEX, "TeXEnvironment for paragraph " << par_begin << " done.");
423 void getArgInsets(otexstream & os, OutputParams const & runparams, Layout::LaTeXArgMap const & latexargs,
424 map<int, lyx::InsetArgument const *> ilist, vector<string> required, string const & prefix)
426 unsigned int const argnr = latexargs.size();
430 // Default and preset args are always output, so if they require
431 // other arguments, consider this.
432 Layout::LaTeXArgMap::const_iterator lit = latexargs.begin();
433 Layout::LaTeXArgMap::const_iterator const lend = latexargs.end();
434 for (; lit != lend; ++lit) {
435 Layout::latexarg arg = (*lit).second;
436 if ((!arg.presetarg.empty() || !arg.defaultarg.empty()) && !arg.requires.empty()) {
437 vector<string> req = getVectorFromString(arg.requires);
438 required.insert(required.end(), req.begin(), req.end());
442 for (unsigned int i = 1; i <= argnr; ++i) {
443 map<int, InsetArgument const *>::const_iterator lit = ilist.find(i);
444 bool inserted = false;
445 if (lit != ilist.end()) {
446 InsetArgument const * ins = (*lit).second;
448 Layout::LaTeXArgMap::const_iterator const lait =
449 latexargs.find(ins->name());
450 if (lait != latexargs.end()) {
451 Layout::latexarg arg = (*lait).second;
452 docstring ldelim = arg.mandatory ?
453 from_ascii("{") : from_ascii("[");
454 docstring rdelim = arg.mandatory ?
455 from_ascii("}") : from_ascii("]");
456 if (!arg.ldelim.empty())
458 if (!arg.rdelim.empty())
460 ins->latexArgument(os, runparams, ldelim, rdelim, arg.presetarg);
466 Layout::LaTeXArgMap::const_iterator lait = latexargs.begin();
467 Layout::LaTeXArgMap::const_iterator const laend = latexargs.end();
468 for (; lait != laend; ++lait) {
469 string const name = prefix + convert<string>(i);
470 if ((*lait).first == name) {
471 Layout::latexarg arg = (*lait).second;
472 docstring preset = arg.presetarg;
473 if (!arg.defaultarg.empty()) {
476 preset += arg.defaultarg;
479 docstring ldelim = arg.ldelim.empty() ?
480 from_ascii("{") : arg.ldelim;
481 docstring rdelim = arg.rdelim.empty() ?
482 from_ascii("}") : arg.rdelim;
483 os << ldelim << preset << rdelim;
484 } else if (!preset.empty()) {
485 docstring ldelim = arg.ldelim.empty() ?
486 from_ascii("[") : arg.ldelim;
487 docstring rdelim = arg.rdelim.empty() ?
488 from_ascii("]") : arg.rdelim;
489 os << ldelim << preset << rdelim;
490 } else if (find(required.begin(), required.end(),
491 (*lait).first) != required.end()) {
492 docstring ldelim = arg.ldelim.empty() ?
493 from_ascii("[") : arg.ldelim;
494 docstring rdelim = arg.rdelim.empty() ?
495 from_ascii("]") : arg.rdelim;
496 os << ldelim << rdelim;
509 void pushPolyglossiaLang(string const & lang_name, bool localswitch)
511 OutputState * state = getOutputState();
513 int nest_level = localswitch ? -state->nest_level_ : state->nest_level_;
514 state->lang_switch_depth_.push(nest_level);
515 state->open_polyglossia_lang_.push(lang_name);
519 void popPolyglossiaLang()
521 OutputState * state = getOutputState();
523 state->lang_switch_depth_.pop();
524 state->open_polyglossia_lang_.pop();
530 void addArgInsets(Paragraph const & par, string const & prefix,
531 Layout::LaTeXArgMap const & latexargs,
532 map<int, InsetArgument const *> & ilist,
533 vector<string> & required)
535 for (auto const & table : par.insetList()) {
536 InsetArgument const * arg = table.inset->asInsetArgument();
539 if (arg->name().empty()) {
540 LYXERR0("Error: Unnamed argument inset!");
543 string const name = prefix.empty() ?
544 arg->name() : split(arg->name(), ':');
545 // why converting into an integer?
546 unsigned int const nr = convert<unsigned int>(name);
547 if (ilist.find(nr) == ilist.end())
549 Layout::LaTeXArgMap::const_iterator const lit =
550 latexargs.find(arg->name());
551 if (lit != latexargs.end()) {
552 Layout::latexarg const & larg = lit->second;
553 vector<string> req = getVectorFromString(larg.requires);
554 move(req.begin(), req.end(), back_inserter(required));
562 void latexArgInsets(Paragraph const & par, otexstream & os,
563 OutputParams const & runparams,
564 Layout::LaTeXArgMap const & latexargs,
565 string const & prefix)
567 map<int, InsetArgument const *> ilist;
568 vector<string> required;
569 addArgInsets(par, prefix, latexargs, ilist, required);
570 getArgInsets(os, runparams, latexargs, ilist, required, prefix);
574 void latexArgInsets(ParagraphList const & pars,
575 ParagraphList::const_iterator pit,
576 otexstream & os, OutputParams const & runparams,
577 Layout::LaTeXArgMap const & latexargs,
578 string const & prefix)
580 map<int, InsetArgument const *> ilist;
581 vector<string> required;
583 depth_type const current_depth = pit->params().depth();
584 Layout const current_layout = pit->layout();
586 // get the first paragraph in sequence with this layout and depth
589 if (lyx::prev(pit, offset) == pars.begin())
591 ParagraphList::const_iterator priorpit = lyx::prev(pit, offset + 1);
592 if (priorpit->layout() == current_layout
593 && priorpit->params().depth() == current_depth)
599 ParagraphList::const_iterator spit = lyx::prev(pit, offset);
601 for (; spit != pars.end(); ++spit) {
602 if (spit->layout() != current_layout ||
603 spit->params().depth() < current_depth)
605 if (spit->params().depth() > current_depth)
607 addArgInsets(*spit, prefix, latexargs, ilist, required);
609 getArgInsets(os, runparams, latexargs, ilist, required, prefix);
615 // output the proper paragraph start according to latextype.
616 void parStartCommand(Paragraph const & par, otexstream & os,
617 OutputParams const & runparams, Layout const & style)
619 switch (style.latextype) {
621 os << '\\' << from_ascii(style.latexname());
624 if (!style.latexargs().empty())
625 latexArgInsets(par, os, runparams, style.latexargs());
626 os << from_ascii(style.latexparam());
628 case LATEX_ITEM_ENVIRONMENT:
629 case LATEX_LIST_ENVIRONMENT:
630 os << "\\" + style.itemcommand();
632 if (!style.itemargs().empty())
633 latexArgInsets(par, os, runparams, style.itemargs(), "item:");
636 case LATEX_BIB_ENVIRONMENT:
637 // ignore this, the inset will write itself
646 // FIXME: this should be anonymous
647 void TeXOnePar(Buffer const & buf,
651 OutputParams const & runparams_in,
652 string const & everypar,
653 int start_pos, int end_pos)
655 BufferParams const & bparams = runparams_in.is_child
656 ? buf.masterParams() : buf.params();
657 ParagraphList const & paragraphs = text.paragraphs();
658 Paragraph const & par = paragraphs.at(pit);
659 // FIXME This check should not really be needed.
660 // Perhaps we should issue an error if it is.
661 Layout const & style = text.inset().forcePlainLayout() ?
662 bparams.documentClass().plainLayout() : par.layout();
664 if (style.inpreamble)
667 LYXERR(Debug::LATEX, "TeXOnePar for paragraph " << pit << " ptr " << &par << " '"
670 OutputParams runparams = runparams_in;
671 runparams.isLastPar = (pit == pit_type(paragraphs.size() - 1));
672 // We reinitialze par begin and end to be on the safe side
673 // with embedded inset as we don't know if they set those
675 runparams.par_begin = 0;
676 runparams.par_end = 0;
678 bool const maintext = text.isMainText();
679 // we are at the beginning of an inset and CJK is already open;
680 // we count inheritation levels to get the inset nesting right.
681 OutputState * state = getOutputState();
682 if (pit == 0 && !maintext
683 && (state->cjk_inherited_ > 0 || state->open_encoding_ == CJK)) {
684 state->cjk_inherited_ += 1;
685 state->open_encoding_ = none;
688 if (text.inset().isPassThru()) {
689 Font const outerfont = text.outerFont(pit);
691 // No newline before first paragraph in this lyxtext
694 if (!text.inset().getLayout().parbreakIsNewline())
698 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos);
702 Paragraph const * nextpar = runparams.isLastPar
703 ? 0 : ¶graphs.at(pit + 1);
705 if (style.pass_thru) {
706 Font const outerfont = text.outerFont(pit);
707 parStartCommand(par, os, runparams, style);
709 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos);
711 // I did not create a parEndCommand for this minuscule
712 // task because in the other user of parStartCommand
713 // the code is different (JMarc)
714 if (style.isCommand())
718 if (!style.parbreak_is_newline) {
720 } else if (nextpar && !style.isEnvironment()) {
721 Layout const nextstyle = text.inset().forcePlainLayout()
722 ? bparams.documentClass().plainLayout()
724 if (nextstyle.name() != style.name())
731 // This paragraph's language
732 Language const * const par_language = par.getParLanguage(bparams);
733 Language const * const nextpar_language = nextpar ?
734 nextpar->getParLanguage(bparams) : 0;
735 // The document's language
736 Language const * const doc_language = bparams.language;
737 // The language that was in effect when the environment this paragraph is
738 // inside of was opened
739 Language const * const outer_language =
740 (runparams.local_font != 0) ?
741 runparams.local_font->language() : doc_language;
743 Paragraph const * priorpar = (pit == 0) ? 0 : ¶graphs.at(pit - 1);
745 // The previous language that was in effect is the language of the
746 // previous paragraph, unless the previous paragraph is inside an
747 // environment with nesting depth greater than (or equal to, but with
748 // a different layout) the current one. If there is no previous
749 // paragraph, the previous language is the outer language.
750 bool const use_prev_env_language = state->prev_env_language_ != 0
752 && priorpar->layout().isEnvironment()
753 && (priorpar->getDepth() > par.getDepth()
754 || (priorpar->getDepth() == par.getDepth()
755 && priorpar->layout() != par.layout()));
756 Language const * const prev_language =
758 ? (use_prev_env_language ? state->prev_env_language_
759 : priorpar->getParLanguage(bparams))
763 bool const use_polyglossia = runparams.use_polyglossia;
764 string const par_lang = use_polyglossia ?
765 getPolyglossiaEnvName(par_language): par_language->babel();
766 string const prev_lang = use_polyglossia ?
767 getPolyglossiaEnvName(prev_language) : prev_language->babel();
768 string const outer_lang = use_polyglossia ?
769 getPolyglossiaEnvName(outer_language) : outer_language->babel();
770 string const nextpar_lang = nextpar_language ? (use_polyglossia ?
771 getPolyglossiaEnvName(nextpar_language) :
772 nextpar_language->babel()) : string();
773 string lang_begin_command = use_polyglossia ?
774 "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
775 string lang_end_command = use_polyglossia ?
776 "\\end{$$lang}" : lyxrc.language_command_end;
777 // the '%' is necessary to prevent unwanted whitespace
778 string lang_command_termination = "%\n";
780 // In some insets (such as Arguments), we cannot use \selectlanguage
781 bool const localswitch = text.inset().forceLocalFontSwitch()
782 || (use_polyglossia && text.inset().forcePlainLayout());
784 lang_begin_command = use_polyglossia ?
785 "\\text$$lang$$opts{" : lyxrc.language_command_local;
786 lang_end_command = "}";
787 lang_command_termination.clear();
790 if (par_lang != prev_lang
791 // check if we already put language command in TeXEnvironment()
792 && !(style.isEnvironment()
793 && (pit == 0 || (priorpar->layout() != par.layout()
794 && priorpar->getDepth() <= par.getDepth())
795 || priorpar->getDepth() < par.getDepth())))
797 if (!lang_end_command.empty() &&
798 prev_lang != outer_lang &&
799 !prev_lang.empty() &&
800 (!use_polyglossia || !style.isEnvironment()))
802 os << from_ascii(subst(lang_end_command,
805 << lang_command_termination;
807 popPolyglossiaLang();
810 // We need to open a new language if we couldn't close the previous
811 // one (because there's no language_command_end); and even if we closed
812 // the previous one, if the current language is different than the
813 // outer_language (which is currently in effect once the previous one
815 if ((lang_end_command.empty() || par_lang != outer_lang
817 || (style.isEnvironment() && par_lang != prev_lang)))
818 && !par_lang.empty()) {
819 // If we're inside an inset, and that inset is within an \L or \R
820 // (or equivalents), then within the inset, too, any opposite
821 // language paragraph should appear within an \L or \R (in addition
822 // to, outside of, the normal language switch commands).
823 // This behavior is not correct for ArabTeX, though.
826 && par_language->lang() != "arabic_arabtex"
827 && outer_language->lang() != "arabic_arabtex"
828 // are we in an inset?
829 && runparams.local_font != 0
830 // is the inset within an \L or \R?
832 // FIXME: currently, we don't check this; this means that
833 // we'll have unnnecessary \L and \R commands, but that
834 // doesn't seem to hurt (though latex will complain)
836 // is this paragraph in the opposite direction?
837 && runparams.local_font->isRightToLeft() != par_language->rightToLeft()) {
838 // FIXME: I don't have a working copy of the Arabi package, so
839 // I'm not sure if the farsi and arabic_arabi stuff is correct
841 if (par_language->lang() == "farsi")
843 else if (outer_language->lang() == "farsi")
845 else if (par_language->lang() == "arabic_arabi")
847 else if (outer_language->lang() == "arabic_arabi")
849 // remaining RTL languages currently is hebrew
850 else if (par_language->rightToLeft())
855 // With CJK, the CJK tag has to be closed first (see below)
856 if (runparams.encoding->package() != Encoding::CJK
857 && par_lang != openPolyglossiaLang(state)
858 && !par_lang.empty()) {
859 string bc = use_polyglossia ?
860 getPolyglossiaBegin(lang_begin_command, par_lang, par_language->polyglossiaOpts())
861 : subst(lang_begin_command, "$$lang", par_lang);
863 os << lang_command_termination;
865 pushPolyglossiaLang(par_lang, localswitch);
870 // Switch file encoding if necessary; no need to do this for "default"
871 // encoding, since this only affects the position of the outputted
872 // \inputencoding command; the encoding switch will occur when necessary
873 if (bparams.inputenc == "auto"
874 && !runparams.isFullUnicode() // Xe/LuaTeX use one document-wide encoding (see also switchEncoding())
875 && runparams.encoding->package() != Encoding::none) {
876 // Look ahead for future encoding changes.
877 // We try to output them at the beginning of the paragraph,
878 // since the \inputencoding command is not allowed e.g. in
879 // sections. For this reason we only set runparams.moving_arg
880 // after checking for the encoding change, otherwise the
881 // change would be always avoided by switchEncoding().
882 for (pos_type i = 0; i < par.size(); ++i) {
883 char_type const c = par.getChar(i);
884 Encoding const * const encoding =
885 par.getFontSettings(bparams, i).language()->encoding();
886 if (encoding->package() != Encoding::CJK
887 && runparams.encoding->package() == Encoding::inputenc
892 // All characters before c are in the ASCII range, and
893 // c is non-ASCII (but no inset), so change the
894 // encoding to that required by the language of c.
895 // With CJK, only add switch if we have CJK content at the beginning
897 if (i != 0 && encoding->package() == Encoding::CJK)
900 pair<bool, int> enc_switch = switchEncoding(os.os(),
901 bparams, runparams, *encoding);
902 // the following is necessary after a CJK environment in a multilingual
903 // context (nesting issue).
904 if (par_language->encoding()->package() == Encoding::CJK
905 && state->open_encoding_ != CJK && state->cjk_inherited_ == 0) {
906 os << "\\begin{CJK}{" << from_ascii(par_language->encoding()->latexName())
907 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
908 state->open_encoding_ = CJK;
910 if (encoding->package() != Encoding::none && enc_switch.first) {
911 if (enc_switch.second > 0) {
912 // the '%' is necessary to prevent unwanted whitespace
915 // With CJK, the CJK tag had to be closed first (see above)
916 if (runparams.encoding->package() == Encoding::CJK
917 && par_lang != openPolyglossiaLang(state)
918 && !par_lang.empty()) {
919 os << from_ascii(subst(
923 << lang_command_termination;
925 pushPolyglossiaLang(par_lang, localswitch);
927 runparams.encoding = encoding;
933 runparams.moving_arg |= style.needprotect;
934 Encoding const * const prev_encoding = runparams.encoding;
936 bool const useSetSpace = bparams.documentClass().provides("SetSpace");
937 if (par.allowParagraphCustomization()) {
938 if (par.params().startOfAppendix()) {
939 os << "\n\\appendix\n";
942 if (!par.params().spacing().isDefault()
943 && (pit == 0 || !priorpar->hasSameLayout(par)))
945 os << from_ascii(par.params().spacing().writeEnvirBegin(useSetSpace))
949 if (style.isCommand()) {
954 parStartCommand(par, os, runparams, style);
955 Font const outerfont = text.outerFont(pit);
958 os << from_utf8(everypar);
959 par.latex(bparams, outerfont, os, runparams, start_pos, end_pos);
961 // Make sure that \\par is done with the font of the last
962 // character if this has another size as the default.
963 // This is necessary because LaTeX (and LyX on the screen)
964 // calculates the space between the baselines according
965 // to this font. (Matthias)
967 // We must not change the font for the last paragraph
968 // of non-multipar insets, tabular cells or commands,
969 // since this produces unwanted whitespace.
971 Font const font = par.empty()
972 ? par.getLayoutFont(bparams, outerfont)
973 : par.getFont(bparams, par.size() - 1, outerfont);
975 bool const is_command = style.isCommand();
977 if (style.resfont.size() != font.fontInfo().size()
978 && (nextpar || maintext
979 || (text.inset().paragraphs().size() > 1
980 && text.inset().lyxCode() != CELL_CODE))
983 os << "\\" << from_ascii(font.latexSize()) << " \\par}";
984 } else if (is_command) {
986 if (!style.postcommandargs().empty())
987 latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
988 if (runparams.encoding != prev_encoding) {
989 runparams.encoding = prev_encoding;
990 os << setEncoding(prev_encoding->iconvName());
994 bool pending_newline = false;
995 bool unskip_newline = false;
996 bool close_lang_switch = false;
997 switch (style.latextype) {
998 case LATEX_ITEM_ENVIRONMENT:
999 case LATEX_LIST_ENVIRONMENT:
1000 if ((nextpar && par_lang != nextpar_lang
1001 && nextpar->getDepth() == par.getDepth())
1002 || (atSameLastLangSwitchDepth(state) && nextpar
1003 && nextpar->getDepth() < par.getDepth()))
1004 close_lang_switch = use_polyglossia;
1005 if (nextpar && par.params().depth() < nextpar->params().depth())
1006 pending_newline = true;
1008 case LATEX_ENVIRONMENT: {
1009 // if its the last paragraph of the current environment
1010 // skip it otherwise fall through
1012 && ((nextpar->layout() != par.layout()
1013 || nextpar->params().depth() != par.params().depth())
1014 || (!use_polyglossia || par_lang != nextpar_lang)))
1016 close_lang_switch = use_polyglossia;
1021 // fall through possible
1023 // we don't need it for the last paragraph!!!
1025 pending_newline = true;
1028 if (par.allowParagraphCustomization()) {
1029 if (!par.params().spacing().isDefault()
1030 && (runparams.isLastPar || !nextpar->hasSameLayout(par))) {
1031 if (pending_newline)
1034 string const endtag =
1035 par.params().spacing().writeEnvirEnd(useSetSpace);
1036 if (prefixIs(endtag, "\\end{"))
1039 os << from_ascii(endtag);
1040 pending_newline = true;
1044 // Closing the language is needed for the last paragraph; it is also
1045 // needed if we're within an \L or \R that we may have opened above (not
1046 // necessarily in this paragraph) and are about to close.
1047 bool closing_rtl_ltr_environment = !use_polyglossia
1049 && (par_language->lang() != "arabic_arabtex"
1050 && outer_language->lang() != "arabic_arabtex")
1051 // have we opened an \L or \R environment?
1052 && runparams.local_font != 0
1053 && runparams.local_font->isRightToLeft() != par_language->rightToLeft()
1054 // are we about to close the language?
1055 &&((nextpar && par_lang != nextpar_lang)
1056 || (runparams.isLastPar && par_lang != outer_lang));
1058 if (closing_rtl_ltr_environment
1059 || ((runparams.isLastPar || close_lang_switch)
1060 && (par_lang != outer_lang || (use_polyglossia
1061 && style.isEnvironment()
1062 && par_lang != nextpar_lang)))) {
1063 // Since \selectlanguage write the language to the aux file,
1064 // we need to reset the language at the end of footnote or
1067 if (pending_newline || close_lang_switch)
1070 // when the paragraph uses CJK, the language has to be closed earlier
1071 if (font.language()->encoding()->package() != Encoding::CJK) {
1072 if (lang_end_command.empty()) {
1073 // If this is a child, we should restore the
1074 // master language after the last paragraph.
1075 Language const * const current_language =
1076 (runparams.isLastPar && runparams.master_language)
1077 ? runparams.master_language
1079 string const current_lang = use_polyglossia
1080 ? getPolyglossiaEnvName(current_language)
1081 : current_language->babel();
1082 if (!current_lang.empty()
1083 && current_lang != openPolyglossiaLang(state)) {
1084 string bc = use_polyglossia ?
1085 getPolyglossiaBegin(lang_begin_command, current_lang,
1086 current_language->polyglossiaOpts())
1087 : subst(lang_begin_command, "$$lang", current_lang);
1089 pending_newline = !localswitch;
1090 unskip_newline = !localswitch;
1091 if (use_polyglossia)
1092 pushPolyglossiaLang(current_lang, localswitch);
1094 } else if (!par_lang.empty()) {
1095 // If we are in an environment, we have to close the "outer" language afterwards
1096 string const & pol_lang = openPolyglossiaLang(state);
1097 if (!style.isEnvironment()
1098 || (close_lang_switch
1099 && atSameLastLangSwitchDepth(state)
1100 && par_lang != outer_lang
1101 && (par_lang != pol_lang
1102 || (pol_lang != outer_lang
1104 && style != nextpar->layout())))
1105 || (atSameLastLangSwitchDepth(state)
1106 && state->lang_switch_depth_.size()
1107 && pol_lang != par_lang))
1109 if (use_polyglossia && !localswitch)
1111 os << from_ascii(subst(
1115 pending_newline = !localswitch;
1116 unskip_newline = !localswitch;
1117 if (use_polyglossia)
1118 popPolyglossiaLang();
1123 if (closing_rtl_ltr_environment)
1126 bool const last_was_separator =
1127 par.size() > 0 && par.isEnvSeparator(par.size() - 1);
1129 if (pending_newline) {
1131 // prevent unwanted whitespace
1133 if (!os.afterParbreak() && !last_was_separator)
1137 // if this is a CJK-paragraph and the next isn't, close CJK
1138 // also if the next paragraph is a multilingual environment (because of nesting)
1140 && state->open_encoding_ == CJK
1141 && (nextpar_language->encoding()->package() != Encoding::CJK
1142 || (nextpar->layout().isEnvironment() && nextpar->isMultiLingual(bparams)))
1143 // inbetween environments, CJK has to be closed later (nesting!)
1144 && (!style.isEnvironment() || !nextpar->layout().isEnvironment())) {
1145 os << "\\end{CJK}\n";
1146 state->open_encoding_ = none;
1149 // If this is the last paragraph, close the CJK environment
1150 // if necessary. If it's an environment, we'll have to \end that first.
1151 if (runparams.isLastPar && !style.isEnvironment()) {
1152 switch (state->open_encoding_) {
1154 // do nothing at the end of child documents
1155 if (maintext && buf.masterBuffer() != &buf)
1159 os << "\n\\end{CJK}\n";
1163 state->open_encoding_ = none;
1168 state->open_encoding_ = none;
1178 // If this is the last paragraph, and a local_font was set upon entering
1179 // the inset, and we're using "auto" or "default" encoding, and not
1180 // compiling with XeTeX or LuaTeX, the encoding
1181 // should be set back to that local_font's encoding.
1182 if (runparams.isLastPar && runparams_in.local_font != 0
1183 && runparams_in.encoding != runparams_in.local_font->language()->encoding()
1184 && (bparams.inputenc == "auto" || bparams.inputenc == "default")
1185 && !runparams.isFullUnicode()
1187 runparams_in.encoding = runparams_in.local_font->language()->encoding();
1188 os << setEncoding(runparams_in.encoding->iconvName());
1190 // Otherwise, the current encoding should be set for the next paragraph.
1192 runparams_in.encoding = runparams.encoding;
1195 // we don't need a newline for the last paragraph!!!
1196 // Note from JMarc: we will re-add a \n explicitly in
1197 // TeXEnvironment, because it is needed in this case
1198 if (nextpar && !os.afterParbreak() && !last_was_separator) {
1199 // Make sure to start a new line
1201 Layout const & next_layout = nextpar->layout();
1202 // A newline '\n' is always output before a command,
1203 // so avoid doubling it.
1204 if (!next_layout.isCommand()) {
1205 // Here we now try to avoid spurious empty lines by
1206 // outputting a paragraph break only if: (case 1) the
1207 // paragraph style allows parbreaks and no \begin, \end
1208 // or \item tags are going to follow (i.e., if the next
1209 // isn't the first or the current isn't the last
1210 // paragraph of an environment or itemize) and the
1211 // depth and alignment of the following paragraph is
1212 // unchanged, or (case 2) the following is a
1213 // non-environment paragraph whose depth is increased
1214 // but whose alignment is unchanged, or (case 3) the
1215 // paragraph is not an environment and the next one is a
1216 // non-itemize-like env at lower depth, or (case 4) the
1217 // paragraph is a command not followed by an environment
1218 // and the alignment of the current and next paragraph
1219 // is unchanged, or (case 5) the current alignment is
1220 // changed and a standard paragraph follows.
1221 DocumentClass const & tclass = bparams.documentClass();
1222 if ((style == next_layout
1223 && !style.parbreak_is_newline
1224 && !text.inset().getLayout().parbreakIsNewline()
1225 && style.latextype != LATEX_ITEM_ENVIRONMENT
1226 && style.latextype != LATEX_LIST_ENVIRONMENT
1227 && style.align == par.getAlign()
1228 && nextpar->getDepth() == par.getDepth()
1229 && nextpar->getAlign() == par.getAlign())
1230 || (!next_layout.isEnvironment()
1231 && nextpar->getDepth() > par.getDepth()
1232 && nextpar->getAlign() == par.getAlign())
1233 || (!style.isEnvironment()
1234 && next_layout.latextype == LATEX_ENVIRONMENT
1235 && nextpar->getDepth() < par.getDepth())
1236 || (style.isCommand()
1237 && !next_layout.isEnvironment()
1238 && style.align == par.getAlign()
1239 && next_layout.align == nextpar->getAlign())
1240 || (style.align != par.getAlign()
1241 && tclass.isDefaultLayout(next_layout))) {
1247 LYXERR(Debug::LATEX, "TeXOnePar for paragraph " << pit << " done; ptr "
1248 << &par << " next " << nextpar);
1254 // LaTeX all paragraphs
1255 void latexParagraphs(Buffer const & buf,
1258 OutputParams const & runparams,
1259 string const & everypar)
1261 LASSERT(runparams.par_begin <= runparams.par_end,
1262 { os << "% LaTeX Output Error\n"; return; } );
1264 BufferParams const & bparams = buf.params();
1265 BufferParams const & mparams = buf.masterParams();
1267 bool const maintext = text.isMainText();
1268 bool const is_child = buf.masterBuffer() != &buf;
1269 bool const multibib_child = maintext && is_child
1270 && mparams.multibib == "child";
1272 if (multibib_child && mparams.useBiblatex())
1273 os << "\\newrefsection";
1274 else if (multibib_child && mparams.useBibtopic()) {
1275 os << "\\begin{btUnit}\n";
1276 runparams.openbtUnit = true;
1279 // Open a CJK environment at the beginning of the main buffer
1280 // if the document's language is a CJK language
1281 // (but not in child documents)
1282 OutputState * state = getOutputState();
1283 if (maintext && !is_child
1284 && bparams.encoding().package() == Encoding::CJK) {
1285 os << "\\begin{CJK}{" << from_ascii(bparams.encoding().latexName())
1286 << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
1287 state->open_encoding_ = CJK;
1289 // if "auto begin" is switched off, explicitly switch the
1290 // language on at start
1291 string const mainlang = runparams.use_polyglossia
1292 ? getPolyglossiaEnvName(bparams.language)
1293 : bparams.language->babel();
1294 string const lang_begin_command = runparams.use_polyglossia ?
1295 "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
1297 if (maintext && !lyxrc.language_auto_begin &&
1298 !mainlang.empty()) {
1300 string bc = runparams.use_polyglossia ?
1301 getPolyglossiaBegin(lang_begin_command, mainlang,
1302 bparams.language->polyglossiaOpts())
1303 : subst(lang_begin_command, "$$lang", mainlang);
1306 if (runparams.use_polyglossia)
1307 pushPolyglossiaLang(mainlang);
1310 ParagraphList const & paragraphs = text.paragraphs();
1312 if (runparams.par_begin == runparams.par_end) {
1313 // The full doc will be exported but it is easier to just rely on
1314 // runparams range parameters that will be passed TeXEnvironment.
1315 runparams.par_begin = 0;
1316 runparams.par_end = paragraphs.size();
1319 pit_type pit = runparams.par_begin;
1320 // lastpit is for the language check after the loop.
1321 pit_type lastpit = pit;
1322 // variables used in the loop:
1323 bool was_title = false;
1324 bool already_title = false;
1325 DocumentClass const & tclass = bparams.documentClass();
1327 // Did we already warn about inTitle layout mixing? (we only warn once)
1328 bool gave_layout_warning = false;
1329 for (; pit < runparams.par_end; ++pit) {
1331 ParagraphList::const_iterator par = paragraphs.constIterator(pit);
1333 // FIXME This check should not be needed. We should
1334 // perhaps issue an error if it is.
1335 Layout const & layout = text.inset().forcePlainLayout() ?
1336 tclass.plainLayout() : par->layout();
1338 if (layout.intitle) {
1339 if (already_title) {
1340 if (!gave_layout_warning && !runparams.dryrun) {
1341 gave_layout_warning = true;
1342 frontend::Alert::warning(_("Error in latexParagraphs"),
1343 bformat(_("You are using at least one "
1344 "layout (%1$s) intended for the title, "
1345 "after using non-title layouts. This "
1346 "could lead to missing or incorrect output."
1349 } else if (!was_title) {
1351 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1353 << from_ascii(tclass.titlename())
1357 } else if (was_title && !already_title && !layout.inpreamble) {
1358 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1359 os << "\\end{" << from_ascii(tclass.titlename())
1363 os << "\\" << from_ascii(tclass.titlename())
1366 already_title = true;
1370 if (layout.isCommand() && !layout.latexname().empty()
1371 && layout.latexname() == bparams.multibib) {
1372 if (runparams.openbtUnit)
1373 os << "\\end{btUnit}\n";
1374 if (!bparams.useBiblatex()) {
1375 os << '\n' << "\\begin{btUnit}\n";
1376 runparams.openbtUnit = true;
1380 if (!layout.isEnvironment() && par->params().leftIndent().zero()) {
1381 // This is a standard top level paragraph, TeX it and continue.
1382 TeXOnePar(buf, text, pit, os, runparams, everypar);
1386 TeXEnvironmentData const data =
1387 prepareEnvironment(buf, text, par, os, runparams);
1388 // pit can be changed in TeXEnvironment.
1389 TeXEnvironment(buf, text, runparams, pit, os);
1390 finishEnvironment(os, runparams, data);
1393 if (pit == runparams.par_end) {
1394 // Make sure that the last paragraph is
1395 // correctly terminated (because TeXOnePar does
1396 // not add a \n in this case)
1400 // It might be that we only have a title in this document
1401 if (was_title && !already_title) {
1402 if (tclass.titletype() == TITLE_ENVIRONMENT) {
1403 os << "\\end{" << from_ascii(tclass.titlename())
1406 os << "\\" << from_ascii(tclass.titlename())
1411 if (maintext && !is_child && runparams.openbtUnit)
1412 os << "\\end{btUnit}\n";
1414 // if "auto end" is switched off, explicitly close the language at the end
1415 // but only if the last par is in a babel or polyglossia language
1416 string const lang_end_command = runparams.use_polyglossia ?
1417 "\\end{$$lang}" : lyxrc.language_command_end;
1418 if (maintext && !lyxrc.language_auto_end && !mainlang.empty() &&
1419 paragraphs.at(lastpit).getParLanguage(bparams)->encoding()->package() != Encoding::CJK) {
1420 os << from_utf8(subst(lang_end_command,
1424 if (runparams.use_polyglossia)
1425 popPolyglossiaLang();
1428 // If the last paragraph is an environment, we'll have to close
1429 // CJK at the very end to do proper nesting.
1430 if (maintext && !is_child && state->open_encoding_ == CJK) {
1431 os << "\\end{CJK}\n";
1432 state->open_encoding_ = none;
1434 // Likewise for polyglossia
1435 string const & pol_lang = openPolyglossiaLang(state);
1436 if (maintext && !is_child && !pol_lang.empty()) {
1437 os << from_utf8(subst(lang_end_command,
1441 if (runparams.use_polyglossia)
1442 popPolyglossiaLang();
1445 // reset inherited encoding
1446 if (state->cjk_inherited_ > 0) {
1447 state->cjk_inherited_ -= 1;
1448 if (state->cjk_inherited_ == 0)
1449 state->open_encoding_ = CJK;
1452 if (multibib_child && mparams.useBibtopic()) {
1453 os << "\\end{btUnit}\n";
1454 runparams.openbtUnit = false;
1459 pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
1460 OutputParams const & runparams, Encoding const & newEnc,
1463 // XeTeX/LuaTeX use only one encoding per document:
1464 // * with useNonTeXFonts: "utf8plain",
1465 // * with XeTeX and TeX fonts: "ascii" (inputenc fails),
1466 // * with LuaTeX and TeX fonts: only one encoding accepted by luainputenc.
1467 if (runparams.isFullUnicode())
1468 return make_pair(false, 0);
1470 Encoding const & oldEnc = *runparams.encoding;
1471 bool moving_arg = runparams.moving_arg;
1472 // If we switch from/to CJK, we need to switch anyway, despite custom inputenc
1473 bool const from_to_cjk =
1474 (oldEnc.package() == Encoding::CJK && newEnc.package() != Encoding::CJK)
1475 || (oldEnc.package() != Encoding::CJK && newEnc.package() == Encoding::CJK);
1476 if (!force && !from_to_cjk
1477 && ((bparams.inputenc != "auto" && bparams.inputenc != "default") || moving_arg))
1478 return make_pair(false, 0);
1480 // Do nothing if the encoding is unchanged.
1481 if (oldEnc.name() == newEnc.name())
1482 return make_pair(false, 0);
1484 // FIXME We ignore encoding switches from/to encodings that do
1485 // neither support the inputenc package nor the CJK package here.
1486 // This does of course only work in special cases (e.g. switch from
1487 // tis620-0 to latin1, but the text in latin1 contains ASCII only),
1488 // but it is the best we can do
1489 if (oldEnc.package() == Encoding::none
1490 || newEnc.package() == Encoding::none)
1491 return make_pair(false, 0);
1493 LYXERR(Debug::LATEX, "Changing LaTeX encoding from "
1494 << oldEnc.name() << " to " << newEnc.name());
1495 os << setEncoding(newEnc.iconvName());
1496 if (bparams.inputenc == "default")
1497 return make_pair(true, 0);
1499 docstring const inputenc_arg(from_ascii(newEnc.latexName()));
1500 OutputState * state = getOutputState();
1501 switch (newEnc.package()) {
1502 case Encoding::none:
1503 case Encoding::japanese:
1504 // shouldn't ever reach here, see above
1505 return make_pair(true, 0);
1506 case Encoding::inputenc: {
1507 int count = inputenc_arg.length();
1508 if (oldEnc.package() == Encoding::CJK &&
1509 state->open_encoding_ == CJK) {
1511 state->open_encoding_ = none;
1514 else if (oldEnc.package() == Encoding::inputenc &&
1515 state->open_encoding_ == inputenc) {
1517 state->open_encoding_ = none;
1520 if (runparams.local_font != 0
1521 && oldEnc.package() == Encoding::CJK) {
1522 // within insets, \inputenc switches need
1523 // to be embraced within \bgroup...\egroup;
1527 state->open_encoding_ = inputenc;
1529 // with the japanese option, inputenc is omitted.
1530 if (runparams.use_japanese)
1531 return make_pair(true, count);
1532 os << "\\inputencoding{" << inputenc_arg << '}';
1533 return make_pair(true, count + 16);
1535 case Encoding::CJK: {
1536 int count = inputenc_arg.length();
1537 if (oldEnc.package() == Encoding::CJK &&
1538 state->open_encoding_ == CJK) {
1542 if (oldEnc.package() == Encoding::inputenc &&
1543 state->open_encoding_ == inputenc) {
1547 os << "\\begin{CJK}{" << inputenc_arg << "}{"
1548 << from_ascii(bparams.fonts_cjk) << "}";
1549 state->open_encoding_ = CJK;
1550 return make_pair(true, count + 15);
1553 // Dead code to avoid a warning:
1554 return make_pair(true, 0);