]> git.lyx.org Git - lyx.git/blobdiff - src/output_latex.cpp
Correctly set language after intitle paragraphs
[lyx.git] / src / output_latex.cpp
index 07659495965259f50fb67f2d1457a9f20d2e491c..24e5b7fb819d661511d4321c3b4288ab83f4c736 100644 (file)
 
 #include "output_latex.h"
 
+#include "BiblioInfo.h"
 #include "Buffer.h"
 #include "BufferParams.h"
 #include "Encoding.h"
 #include "Font.h"
 #include "InsetList.h"
 #include "Language.h"
+#include "LaTeXFeatures.h"
 #include "Layout.h"
 #include "LyXRC.h"
 #include "OutputParams.h"
@@ -85,11 +87,12 @@ OutputState * getOutputState()
 }
 
 
-string const & openPolyglossiaLang(OutputState const * state)
+string const & openLanguageName(OutputState const * state)
 {
        // Return a reference to the last active language opened with
-       // polyglossia. If none or when using babel, return a reference
-       // to an empty string.
+       // polyglossia or when using begin/end commands. If none or when
+       // using babel with only a begin command, return a reference to
+       // an empty string.
 
        static string const empty;
 
@@ -102,12 +105,31 @@ string const & openPolyglossiaLang(OutputState const * state)
 bool atSameLastLangSwitchDepth(OutputState const * state)
 {
        // Return true if the actual nest level is the same at which the
-       // language was switched when using polyglossia. Instead, return
-       // always true when using babel.
+       // language was switched when using polyglossia or begin/end
+       // commands. Instead, return always true when using babel with
+       // only a begin command.
 
        return state->lang_switch_depth_.size() == 0
                        ? true
-                       : state->lang_switch_depth_.top() == state->nest_level_;
+                       : abs(state->lang_switch_depth_.top()) == state->nest_level_;
+}
+
+
+bool isLocalSwitch(OutputState const * state)
+{
+       // Return true if the language was opened by a local command switch.
+
+       return state->lang_switch_depth_.size()
+               && state->lang_switch_depth_.top() < 0;
+}
+
+
+bool langOpenedAtThisLevel(OutputState const * state)
+{
+       // Return true if the language was opened at the current nesting level.
+
+       return state->lang_switch_depth_.size()
+               && abs(state->lang_switch_depth_.top()) == state->nest_level_;
 }
 
 
@@ -122,11 +144,16 @@ string const getPolyglossiaEnvName(Language const * lang)
 
 
 string const getPolyglossiaBegin(string const & lang_begin_command,
-                                string const & lang, string const & opts)
+                                string const & lang, string const & opts,
+                                bool const localswitch = false)
 {
        string result;
-       if (!lang.empty())
-               result = subst(lang_begin_command, "$$lang", lang);
+       if (!lang.empty()) {
+               // we need to revert the upcasing done in getPolyglossiaEnvName()
+               // in case we have a local polyglossia command (\textarabic).
+               string language = localswitch ? ascii_lowercase(lang) : lang;
+               result = subst(lang_begin_command, "$$lang", language);
+       }
        string options = opts.empty() ?
                    string() : "[" + opts + "]";
        result = subst(result, "$$opts", options);
@@ -191,12 +218,14 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
                "\\begin{$$lang}" : lyxrc.language_command_begin;
        string const lang_end_command = use_polyglossia ?
                "\\end{$$lang}" : lyxrc.language_command_end;
+       bool const using_begin_end = use_polyglossia ||
+                                       !lang_end_command.empty();
 
        // For polyglossia, switch language outside of environment, if possible.
        if (par_lang != prev_par_lang) {
-               if (!lang_end_command.empty() &&
+               if ((!using_begin_end || langOpenedAtThisLevel(state)) &&
+                   !lang_end_command.empty() &&
                    prev_par_lang != doc_lang &&
-                   atSameLastLangSwitchDepth(state) &&
                    !prev_par_lang.empty()) {
                        os << from_ascii(subst(
                                lang_end_command,
@@ -204,15 +233,21 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
                                prev_par_lang))
                          // the '%' is necessary to prevent unwanted whitespace
                          << "%\n";
-                       if (use_polyglossia) {
-                               state->lang_switch_depth_.pop();
-                               state->open_polyglossia_lang_.pop();
-                       }
+                       if (using_begin_end)
+                               popLanguageName();
                }
 
+               // If no language was explicitly opened and we are using
+               // polyglossia or begin/end commands, then the current
+               // language is the document language.
+               string const & cur_lang = using_begin_end
+                                         && state->lang_switch_depth_.size()
+                                                 ? openLanguageName(state)
+                                                 : doc_lang;
+
                if ((lang_end_command.empty() ||
                    par_lang != doc_lang ||
-                   par_lang != openPolyglossiaLang(state)) &&
+                   par_lang != cur_lang) &&
                    !par_lang.empty()) {
                            string bc = use_polyglossia ?
                                        getPolyglossiaBegin(lang_begin_command, par_lang,
@@ -221,10 +256,8 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
                            os << bc;
                            // the '%' is necessary to prevent unwanted whitespace
                            os << "%\n";
-                           if (use_polyglossia) {
-                                   state->lang_switch_depth_.push(state->nest_level_);
-                                   state->open_polyglossia_lang_.push(par_lang);
-                           }
+                           if (using_begin_end)
+                                   pushLanguageName(par_lang);
                }
        }
 
@@ -236,8 +269,10 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
                data.leftindent_open = true;
        }
 
-       if (style.isEnvironment()) {
+       if (style.isEnvironment())
                state->nest_level_ += 1;
+
+       if (style.isEnvironment() && !style.latexname().empty()) {
                os << "\\begin{" << from_ascii(style.latexname()) << '}';
                if (!style.latexargs().empty()) {
                        OutputParams rp = runparams;
@@ -264,9 +299,14 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
        data.cjk_nested = false;
        if (data.par_language->encoding()->package() == Encoding::CJK &&
            state->open_encoding_ != CJK && pit->isMultiLingual(bparams)) {
-               if (prev_par_language->encoding()->package() == Encoding::CJK)
-                       os << "\\begin{CJK}{" << from_ascii(data.par_language->encoding()->latexName())
+               if (prev_par_language->encoding()->package() == Encoding::CJK) {
+                       docstring const cjkenc = (bparams.encoding().name() == "utf8-cjk"
+                                                 && LaTeXFeatures::isAvailable("CJKutf8")) ?
+                                                       from_ascii("UTF8")
+                                                     : from_ascii(data.par_language->encoding()->latexName());
+                       os << "\\begin{CJK}{" << cjkenc
                           << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
+               }
                state->open_encoding_ = CJK;
                data.cjk_nested = true;
        }
@@ -288,19 +328,26 @@ static void finishEnvironment(otexstream & os, OutputParams const & runparams,
 
        if (data.style->isEnvironment()) {
                os << breakln;
-               // Close any polyglossia language opened at this nest level
-               if (runparams.use_polyglossia) {
-                       OutputState * state = getOutputState();
-                       while (state->lang_switch_depth_.size()
-                              && state->lang_switch_depth_.top() == state->nest_level_) {
-                               os << "\\end{" << openPolyglossiaLang(state)
-                                  << "}%\n";
-                               state->lang_switch_depth_.pop();
-                               state->open_polyglossia_lang_.pop();
+               bool const using_begin_end =
+                       runparams.use_polyglossia ||
+                               !lyxrc.language_command_end.empty();
+               // Close any language opened at this nest level
+               if (using_begin_end) {
+                       while (langOpenedAtThisLevel(state)) {
+                               if (isLocalSwitch(state)) {
+                                       os << "}";
+                               } else {
+                                       os << "\\end{"
+                                          << openLanguageName(state)
+                                          << "}%\n";
+                               }
+                               popLanguageName();
                        }
                }
                state->nest_level_ -= 1;
-               os << "\\end{" << from_ascii(data.style->latexname()) << "}\n";
+               string const & name = data.style->latexname();
+               if (!name.empty())
+                       os << "\\end{" << from_ascii(name) << "}\n";
                state->prev_env_language_ = data.par_language;
                if (runparams.encoding != data.prev_encoding) {
                        runparams.encoding = data.prev_encoding;
@@ -475,19 +522,20 @@ void getArgInsets(otexstream & os, OutputParams const & runparams, Layout::LaTeX
 }
 
 
-} // namespace anon
+} // namespace
 
 
-void pushPolyglossiaLang(string const & lang_name)
+void pushLanguageName(string const & lang_name, bool localswitch)
 {
        OutputState * state = getOutputState();
 
-       state->lang_switch_depth_.push(state->nest_level_);
+       int nest_level = localswitch ? -state->nest_level_ : state->nest_level_;
+       state->lang_switch_depth_.push(nest_level);
        state->open_polyglossia_lang_.push(lang_name);
 }
 
 
-void popPolyglossiaLang()
+void popLanguageName()
 {
        OutputState * state = getOutputState();
 
@@ -496,43 +544,65 @@ void popPolyglossiaLang()
 }
 
 
-void latexArgInsets(Paragraph const & par, otexstream & os,
-       OutputParams const & runparams, Layout::LaTeXArgMap const & latexargs, string const & prefix)
+string const & openLanguageName()
 {
-       map<int, InsetArgument const *> ilist;
-       vector<string> required;
+       OutputState * state = getOutputState();
 
-       InsetList::const_iterator it = par.insetList().begin();
-       InsetList::const_iterator end = par.insetList().end();
-       for (; it != end; ++it) {
-               if (it->inset->lyxCode() == ARG_CODE) {
-                       InsetArgument const * ins =
-                               static_cast<InsetArgument const *>(it->inset);
-                       if (ins->name().empty())
-                               LYXERR0("Error: Unnamed argument inset!");
-                       else {
-                               string const name = prefix.empty() ? ins->name() : split(ins->name(), ':');
-                               unsigned int const nr = convert<unsigned int>(name);
-                               ilist[nr] = ins;
-                               Layout::LaTeXArgMap::const_iterator const lit =
-                                               latexargs.find(ins->name());
-                               if (lit != latexargs.end()) {
-                                       Layout::latexarg const & arg = (*lit).second;
-                                       if (!arg.requires.empty()) {
-                                               vector<string> req = getVectorFromString(arg.requires);
-                                               required.insert(required.end(), req.begin(), req.end());
-                                       }
-                               }
-                       }
+       return openLanguageName(state);
+}
+
+
+namespace {
+
+void addArgInsets(Paragraph const & par, string const & prefix,
+                 Layout::LaTeXArgMap const & latexargs,
+                 map<int, InsetArgument const *> & ilist,
+                 vector<string> & required)
+{
+       for (auto const & table : par.insetList()) {
+               InsetArgument const * arg = table.inset->asInsetArgument();
+               if (!arg)
+                       continue;
+               if (arg->name().empty()) {
+                       LYXERR0("Error: Unnamed argument inset!");
+                       continue;
+               }
+               string const name = prefix.empty() ?
+                       arg->name() : split(arg->name(), ':');
+               // why converting into an integer?
+               unsigned int const nr = convert<unsigned int>(name);
+               if (ilist.find(nr) == ilist.end())
+                       ilist[nr] = arg;
+               Layout::LaTeXArgMap::const_iterator const lit =
+                       latexargs.find(arg->name());
+               if (lit != latexargs.end()) {
+                       Layout::latexarg const & larg = lit->second;
+                       vector<string> req = getVectorFromString(larg.requires);
+                       move(req.begin(), req.end(), back_inserter(required));
                }
        }
+}
+
+} // namespace
+
+
+void latexArgInsets(Paragraph const & par, otexstream & os,
+                    OutputParams const & runparams,
+                    Layout::LaTeXArgMap const & latexargs,
+                    string const & prefix)
+{
+       map<int, InsetArgument const *> ilist;
+       vector<string> required;
+       addArgInsets(par, prefix, latexargs, ilist, required);
        getArgInsets(os, runparams, latexargs, ilist, required, prefix);
 }
 
 
-void latexArgInsets(ParagraphList const & pars, ParagraphList::const_iterator pit,
-       otexstream & os, OutputParams const & runparams, Layout::LaTeXArgMap const & latexargs,
-       string const & prefix)
+void latexArgInsets(ParagraphList const & pars,
+                    ParagraphList::const_iterator pit,
+                    otexstream & os, OutputParams const & runparams,
+                    Layout::LaTeXArgMap const & latexargs,
+                    string const & prefix)
 {
        map<int, InsetArgument const *> ilist;
        vector<string> required;
@@ -556,44 +626,40 @@ void latexArgInsets(ParagraphList const & pars, ParagraphList::const_iterator pi
        ParagraphList::const_iterator spit = lyx::prev(pit, offset);
 
        for (; spit != pars.end(); ++spit) {
-               if (spit->layout() != current_layout || spit->params().depth() < current_depth)
+               if (spit->layout() != current_layout ||
+                   spit->params().depth() < current_depth)
                        break;
                if (spit->params().depth() > current_depth)
                        continue;
-               InsetList::const_iterator it = spit->insetList().begin();
-               InsetList::const_iterator end = spit->insetList().end();
-               for (; it != end; ++it) {
-                       if (it->inset->lyxCode() == ARG_CODE) {
-                               InsetArgument const * ins =
-                                       static_cast<InsetArgument const *>(it->inset);
-                               if (ins->name().empty())
-                                       LYXERR0("Error: Unnamed argument inset!");
-                               else {
-                                       string const name = prefix.empty() ? ins->name() : split(ins->name(), ':');
-                                       unsigned int const nr = convert<unsigned int>(name);
-                                       if (ilist.find(nr) == ilist.end())
-                                               ilist[nr] = ins;
-                                       Layout::LaTeXArgMap::const_iterator const lit =
-                                                       latexargs.find(ins->name());
-                                       if (lit != latexargs.end()) {
-                                               Layout::latexarg const & arg = (*lit).second;
-                                               if (!arg.requires.empty()) {
-                                                       vector<string> req = getVectorFromString(arg.requires);
-                                                       required.insert(required.end(), req.begin(), req.end());
-                                               }
-                                       }
-                               }
-                       }
-               }
+               addArgInsets(*spit, prefix, latexargs, ilist, required);
+       }
+       getArgInsets(os, runparams, latexargs, ilist, required, prefix);
+}
+
+
+void latexArgInsetsForParent(ParagraphList const & pars, otexstream & os,
+                             OutputParams const & runparams,
+                             Layout::LaTeXArgMap const & latexargs,
+                             string const & prefix)
+{
+       map<int, InsetArgument const *> ilist;
+       vector<string> required;
+
+       for (Paragraph const & par : pars) {
+               if (par.layout().hasArgs())
+                       // The InsetArguments inside this paragraph refer to this paragraph
+                       continue;
+               addArgInsets(par, prefix, latexargs, ilist, required);
        }
        getArgInsets(os, runparams, latexargs, ilist, required, prefix);
 }
 
+
 namespace {
 
 // output the proper paragraph start according to latextype.
 void parStartCommand(Paragraph const & par, otexstream & os,
-                    OutputParams const & runparams, Layout const & style) 
+                    OutputParams const & runparams, Layout const & style)
 {
        switch (style.latextype) {
        case LATEX_COMMAND:
@@ -620,7 +686,7 @@ void parStartCommand(Paragraph const & par, otexstream & os,
        }
 }
 
-} // namespace anon
+} // namespace
 
 // FIXME: this should be anonymous
 void TeXOnePar(Buffer const & buf,
@@ -629,7 +695,8 @@ void TeXOnePar(Buffer const & buf,
               otexstream & os,
               OutputParams const & runparams_in,
               string const & everypar,
-              int start_pos, int end_pos)
+              int start_pos, int end_pos,
+              bool const force)
 {
        BufferParams const & bparams = runparams_in.is_child
                ? buf.masterParams() : buf.params();
@@ -640,7 +707,7 @@ void TeXOnePar(Buffer const & buf,
        Layout const & style = text.inset().forcePlainLayout() ?
                bparams.documentClass().plainLayout() : par.layout();
 
-       if (style.inpreamble)
+       if (style.inpreamble && !force)
                return;
 
        LYXERR(Debug::LATEX, "TeXOnePar for paragraph " << pit << " ptr " << &par << " '"
@@ -674,18 +741,22 @@ void TeXOnePar(Buffer const & buf,
                                os << '\n';
                }
 
-               par.latex(bparams, outerfont, os, runparams, start_pos, end_pos);
+               par.latex(bparams, outerfont, os, runparams, start_pos, end_pos, force);
                return;
        }
 
        Paragraph const * nextpar = runparams.isLastPar
                ? 0 : &paragraphs.at(pit + 1);
 
+       bool const intitle_command = style.intitle && style.latextype == LATEX_COMMAND;
+
        if (style.pass_thru) {
                Font const outerfont = text.outerFont(pit);
                parStartCommand(par, os, runparams, style);
+               if (intitle_command)
+                       os << '{';
 
-               par.latex(bparams, outerfont, os, runparams, start_pos, end_pos);
+               par.latex(bparams, outerfont, os, runparams, start_pos, end_pos, force);
 
                // I did not create a parEndCommand for this minuscule
                // task because in the other user of parStartCommand
@@ -726,18 +797,39 @@ void TeXOnePar(Buffer const & buf,
        // environment with nesting depth greater than (or equal to, but with
        // a different layout) the current one. If there is no previous
        // paragraph, the previous language is the outer language.
+       // Note further that we take the outer language also if the prior par
+       // is PassThru, since in that case it has latex_language, and all secondary
+       // languages have been closed (#10793).
        bool const use_prev_env_language = state->prev_env_language_ != 0
                        && priorpar
                        && priorpar->layout().isEnvironment()
                        && (priorpar->getDepth() > par.getDepth()
                            || (priorpar->getDepth() == par.getDepth()
                                    && priorpar->layout() != par.layout()));
-       Language const * const prev_language =
-               (pit != 0)
-               ? (use_prev_env_language ? state->prev_env_language_
-                                        : priorpar->getParLanguage(bparams))
-               : outer_language;
 
+       // We need to ignore previous intitle commands since languages
+       // are switched locally there (# 11514)
+       // There might be paragraphs before the title, so we check this.
+       Paragraph * prior_nontitle_par = nullptr;
+       if (!intitle_command) {
+               pit_type ppit = pit;
+               while (ppit > 0) {
+                       --ppit;
+                       Paragraph const * tmppar = &paragraphs.at(ppit);
+                       if (tmppar->layout().intitle && tmppar->layout().isCommand())
+                               continue;
+                       prior_nontitle_par = const_cast<Paragraph*>(tmppar);
+                       break;
+               }
+       }
+       Language const * const prev_language =
+               runparams_in.for_search 
+                       ? languages.getLanguage("ignore")
+                       : (prior_nontitle_par && !prior_nontitle_par->isPassThru())
+                               ? (use_prev_env_language 
+                                       ? state->prev_env_language_
+                                       : prior_nontitle_par->getParLanguage(bparams))
+                               : outer_language;
 
        bool const use_polyglossia = runparams.use_polyglossia;
        string const par_lang = use_polyglossia ?
@@ -755,37 +847,56 @@ void TeXOnePar(Buffer const & buf,
                "\\end{$$lang}" : lyxrc.language_command_end;
        // the '%' is necessary to prevent unwanted whitespace
        string lang_command_termination = "%\n";
+       bool const using_begin_end = use_polyglossia ||
+                                       !lang_end_command.empty();
 
-       // In some insets (such as Arguments), we cannot use \selectlanguage
+       // For InTitle commands, we need to switch the language inside the command
+       // (see #10849); thus open the command here.
+       if (intitle_command) {
+               parStartCommand(par, os, runparams, style);
+               os << '{';
+       }
+
+       // In some insets (such as Arguments), we cannot use \selectlanguage.
+       // Also, if an RTL language is set via environment in polyglossia,
+       // only a nested \\text<lang> command will reset the direction for LTR
+       // languages (see # 10111).
+       bool const in_polyglossia_rtl_env =
+               use_polyglossia
+               && runparams.local_font != 0
+               && outer_language->rightToLeft()
+               && !par_language->rightToLeft();
        bool const localswitch = text.inset().forceLocalFontSwitch()
-                       || (use_polyglossia && text.inset().forcePlainLayout());
+                       || (using_begin_end && text.inset().forcePlainLayout())
+                       || in_polyglossia_rtl_env;
        if (localswitch) {
                lang_begin_command = use_polyglossia ?
                            "\\text$$lang$$opts{" : lyxrc.language_command_local;
                lang_end_command = "}";
                lang_command_termination.clear();
        }
-
-       if (par_lang != prev_lang
-               // check if we already put language command in TeXEnvironment()
-               && !(style.isEnvironment()
-                    && (pit == 0 || (priorpar->layout() != par.layout()
-                                         && priorpar->getDepth() <= par.getDepth())
-                                 || priorpar->getDepth() < par.getDepth())))
-       {
-               if (!lang_end_command.empty() &&
-                   prev_lang != outer_lang &&
-                   !prev_lang.empty() &&
-                   (!use_polyglossia || !style.isEnvironment()))
-               {
+       
+       bool const localswitch_needed = localswitch && par_lang != outer_lang;
+
+       // localswitches need to be closed and reopened at each par
+       if ((par_lang != prev_lang || localswitch_needed)
+            // check if we already put language command in TeXEnvironment()
+            && !(style.isEnvironment()
+                 && (pit == 0 || (priorpar->layout() != par.layout()
+                                  && priorpar->getDepth() <= par.getDepth())
+                     || priorpar->getDepth() < par.getDepth()))) {
+               if (!localswitch
+                   && (!using_begin_end || langOpenedAtThisLevel(state))
+                   && !lang_end_command.empty()
+                   && prev_lang != outer_lang 
+                   && !prev_lang.empty()
+                   && (!using_begin_end || !style.isEnvironment())) {
                        os << from_ascii(subst(lang_end_command,
-                               "$$lang",
-                               prev_lang))
+                                              "$$lang",
+                                              prev_lang))
                           << lang_command_termination;
-                       if (use_polyglossia && !localswitch) {
-                               state->lang_switch_depth_.pop();
-                               state->open_polyglossia_lang_.pop();
-                       }
+                       if (using_begin_end)
+                               popLanguageName();
                }
 
                // We need to open a new language if we couldn't close the previous
@@ -794,7 +905,7 @@ void TeXOnePar(Buffer const & buf,
                // outer_language (which is currently in effect once the previous one
                // is closed).
                if ((lang_end_command.empty() || par_lang != outer_lang
-                    || (!use_polyglossia
+                    || (!using_begin_end
                         || (style.isEnvironment() && par_lang != prev_lang)))
                        && !par_lang.empty()) {
                        // If we're inside an inset, and that inset is within an \L or \R
@@ -802,7 +913,7 @@ void TeXOnePar(Buffer const & buf,
                        // language paragraph should appear within an \L or \R (in addition
                        // to, outside of, the normal language switch commands).
                        // This behavior is not correct for ArabTeX, though.
-                       if (!use_polyglossia
+                       if (!using_begin_end
                            // not for ArabTeX
                                && par_language->lang() != "arabic_arabtex"
                                && outer_language->lang() != "arabic_arabtex"
@@ -835,17 +946,17 @@ void TeXOnePar(Buffer const & buf,
                        }
                        // With CJK, the CJK tag has to be closed first (see below)
                        if (runparams.encoding->package() != Encoding::CJK
-                           && par_lang != openPolyglossiaLang(state)
+                           && (par_lang != openLanguageName(state) || localswitch || intitle_command)
                            && !par_lang.empty()) {
                                string bc = use_polyglossia ?
-                                         getPolyglossiaBegin(lang_begin_command, par_lang, par_language->polyglossiaOpts())
+                                         getPolyglossiaBegin(lang_begin_command, par_lang,
+                                                             par_language->polyglossiaOpts(),
+                                                             localswitch)
                                          : subst(lang_begin_command, "$$lang", par_lang);
                                os << bc;
                                os << lang_command_termination;
-                               if (use_polyglossia && !localswitch) {
-                                       state->lang_switch_depth_.push(state->nest_level_);
-                                       state->open_polyglossia_lang_.push(par_lang);
-                               }
+                               if (using_begin_end)
+                                       pushLanguageName(par_lang, localswitch);
                        }
                }
        }
@@ -886,7 +997,11 @@ void TeXOnePar(Buffer const & buf,
                        // context (nesting issue).
                        if (par_language->encoding()->package() == Encoding::CJK
                                && state->open_encoding_ != CJK && state->cjk_inherited_ == 0) {
-                               os << "\\begin{CJK}{" << from_ascii(par_language->encoding()->latexName())
+                               docstring const cjkenc = (bparams.encoding().name() == "utf8-cjk"
+                                                         && LaTeXFeatures::isAvailable("CJKutf8")) ?
+                                                               from_ascii("UTF8")
+                                                             : from_ascii(par_language->encoding()->latexName());
+                               os << "\\begin{CJK}{" << cjkenc
                                   << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
                                state->open_encoding_ = CJK;
                        }
@@ -897,17 +1012,17 @@ void TeXOnePar(Buffer const & buf,
                                }
                                // With CJK, the CJK tag had to be closed first (see above)
                                if (runparams.encoding->package() == Encoding::CJK
-                                   && par_lang != openPolyglossiaLang(state)
+                                   && par_lang != openLanguageName(state)
                                    && !par_lang.empty()) {
-                                       os << from_ascii(subst(
-                                               lang_begin_command,
-                                               "$$lang",
-                                               par_lang))
-                                       << lang_command_termination;
-                                       if (use_polyglossia && !localswitch) {
-                                               state->lang_switch_depth_.push(state->nest_level_);
-                                               state->open_polyglossia_lang_.push(par_lang);
-                                       }
+                                       string bc = use_polyglossia ?
+                                                   getPolyglossiaBegin(lang_begin_command, par_lang,
+                                                                       par_language->polyglossiaOpts(),
+                                                                       localswitch)
+                                                   : subst(lang_begin_command, "$$lang", par_lang);
+                                       os << bc
+                                          << lang_command_termination;
+                                       if (using_begin_end)
+                                               pushLanguageName(par_lang, localswitch);
                                }
                                runparams.encoding = encoding;
                        }
@@ -924,34 +1039,39 @@ void TeXOnePar(Buffer const & buf,
                        os << "\n\\appendix\n";
                }
 
-               if (!par.params().spacing().isDefault()
-                       && (pit == 0 || !priorpar->hasSameLayout(par)))
-               {
-                       os << from_ascii(par.params().spacing().writeEnvirBegin(useSetSpace))
-                           << '\n';
-               }
+               // InTitle commands must use switches (not environments)
+               // inside the commands (see #9332)
+               if (style.intitle) {
+                       if (!par.params().spacing().isDefault())
+                       {
+                               if (runparams.moving_arg)
+                                       os << "\\protect";
+                               os << from_ascii(par.params().spacing().writeCmd(useSetSpace));
+                       }
+               } else {
+                       if (!par.params().spacing().isDefault()
+                               && (pit == 0 || !priorpar->hasSameLayout(par)))
+                       {
+                               os << from_ascii(par.params().spacing().writeEnvirBegin(useSetSpace))
+                                   << '\n';
+                       }
 
-               if (style.isCommand()) {
-                       os << '\n';
+                       if (style.isCommand()) {
+                               os << '\n';
+                       }
                }
        }
 
-       parStartCommand(par, os, runparams, style);
+       // For InTitle commands, we already started the command before
+       // the language switch
+       if (!intitle_command)
+               parStartCommand(par, os, runparams, style);
+
        Font const outerfont = text.outerFont(pit);
 
        // FIXME UNICODE
        os << from_utf8(everypar);
-       par.latex(bparams, outerfont, os, runparams, start_pos, end_pos);
-
-       // Make sure that \\par is done with the font of the last
-       // character if this has another size as the default.
-       // This is necessary because LaTeX (and LyX on the screen)
-       // calculates the space between the baselines according
-       // to this font. (Matthias)
-       //
-       // We must not change the font for the last paragraph
-       // of non-multipar insets, tabular cells or commands,
-       // since this produces unwanted whitespace.
+       par.latex(bparams, outerfont, os, runparams, start_pos, end_pos, force);
 
        Font const font = par.empty()
                 ? par.getLayoutFont(bparams, outerfont)
@@ -959,20 +1079,16 @@ void TeXOnePar(Buffer const & buf,
 
        bool const is_command = style.isCommand();
 
-       if (style.resfont.size() != font.fontInfo().size()
-           && (nextpar || maintext
-               || (text.inset().paragraphs().size() > 1
-                   && text.inset().lyxCode() != CELL_CODE))
-           && !is_command) {
-               os << '{';
-               os << "\\" << from_ascii(font.latexSize()) << " \\par}";
-       } else if (is_command) {
-               os << '}';
-               if (!style.postcommandargs().empty())
-                       latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
-               if (runparams.encoding != prev_encoding) {
-                       runparams.encoding = prev_encoding;
-                       os << setEncoding(prev_encoding->iconvName());
+       // InTitle commands need to be closed after the language has been closed.
+       if (!intitle_command) {
+               if (is_command) {
+                       os << '}';
+                       if (!style.postcommandargs().empty())
+                               latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
+                       if (runparams.encoding != prev_encoding) {
+                               runparams.encoding = prev_encoding;
+                               os << setEncoding(prev_encoding->iconvName());
+                       }
                }
        }
 
@@ -986,7 +1102,7 @@ void TeXOnePar(Buffer const & buf,
                             && nextpar->getDepth() == par.getDepth())
                    || (atSameLastLangSwitchDepth(state) && nextpar
                            && nextpar->getDepth() < par.getDepth()))
-                       close_lang_switch = use_polyglossia;
+                       close_lang_switch = using_begin_end;
                if (nextpar && par.params().depth() < nextpar->params().depth())
                        pending_newline = true;
                break;
@@ -996,21 +1112,22 @@ void TeXOnePar(Buffer const & buf,
                if (nextpar
                    && ((nextpar->layout() != par.layout()
                           || nextpar->params().depth() != par.params().depth())
-                       || (!use_polyglossia || par_lang != nextpar_lang)))
+                       || (!using_begin_end || par_lang != nextpar_lang)))
                {
-                       close_lang_switch = use_polyglossia;
+                       close_lang_switch = using_begin_end;
                        break;
                }
        }
-
-       // fall through possible
+       // possible
+       // fall through
        default:
-               // we don't need it for the last paragraph!!!
-               if (nextpar)
+               // we don't need it for the last paragraph and in InTitle commands!!!
+               if (nextpar && !intitle_command)
                        pending_newline = true;
        }
 
-       if (par.allowParagraphCustomization()) {
+       // InTitle commands use switches (not environments) for space settings
+       if (par.allowParagraphCustomization() && !style.intitle) {
                if (!par.params().spacing().isDefault()
                        && (runparams.isLastPar || !nextpar->hasSameLayout(par))) {
                        if (pending_newline)
@@ -1026,10 +1143,11 @@ void TeXOnePar(Buffer const & buf,
                }
        }
 
-       // Closing the language is needed for the last paragraph; it is also
-       // needed if we're within an \L or \R that we may have opened above (not
-       // necessarily in this paragraph) and are about to close.
-       bool closing_rtl_ltr_environment = !use_polyglossia
+       // Closing the language is needed for the last paragraph in a given language
+       // as well as for any InTitleCommand (since these set the language locally);
+       // it is also needed if we're within an \L or \R that we may have opened above
+       // (not necessarily in this paragraph) and are about to close.
+       bool closing_rtl_ltr_environment = !using_begin_end
                // not for ArabTeX
                && (par_language->lang() != "arabic_arabtex"
                    && outer_language->lang() != "arabic_arabtex")
@@ -1040,16 +1158,18 @@ void TeXOnePar(Buffer const & buf,
                &&((nextpar && par_lang != nextpar_lang)
                   || (runparams.isLastPar && par_lang != outer_lang));
 
-       if (closing_rtl_ltr_environment
-           || ((runparams.isLastPar || close_lang_switch)
-               && (par_lang != outer_lang || (use_polyglossia
+       if (localswitch_needed
+           || (intitle_command && using_begin_end)
+           || closing_rtl_ltr_environment
+           || (((runparams.isLastPar && !runparams.inbranch) || close_lang_switch)
+               && (par_lang != outer_lang || (using_begin_end
                                                && style.isEnvironment()
                                                && par_lang != nextpar_lang)))) {
                // Since \selectlanguage write the language to the aux file,
                // we need to reset the language at the end of footnote or
                // float.
 
-               if (pending_newline || close_lang_switch)
+               if (!localswitch && (pending_newline || close_lang_switch))
                        os << '\n';
 
                // when the paragraph uses CJK, the language has to be closed earlier
@@ -1065,36 +1185,38 @@ void TeXOnePar(Buffer const & buf,
                                        ? getPolyglossiaEnvName(current_language)
                                        : current_language->babel();
                                if (!current_lang.empty()
-                                   && current_lang != openPolyglossiaLang(state)) {
+                                   && current_lang != openLanguageName(state)) {
                                        string bc = use_polyglossia ?
                                                    getPolyglossiaBegin(lang_begin_command, current_lang,
-                                                                       current_language->polyglossiaOpts())
+                                                                       current_language->polyglossiaOpts(),
+                                                                       localswitch)
                                                  : subst(lang_begin_command, "$$lang", current_lang);
                                        os << bc;
                                        pending_newline = !localswitch;
                                        unskip_newline = !localswitch;
-                                       if (use_polyglossia && !localswitch) {
-                                               state->lang_switch_depth_.push(
-                                                               state->nest_level_);
-                                               state->open_polyglossia_lang_.push(current_lang);
-                                       }
+                                       if (using_begin_end)
+                                               pushLanguageName(current_lang, localswitch);
                                }
-                       } else if (!par_lang.empty()) {
-                               // If we are in an environment, we have to close the "outer" language afterwards
-                               string const & pol_lang = openPolyglossiaLang(state);
+                       } else if ((!using_begin_end ||
+                                   langOpenedAtThisLevel(state)) &&
+                                  !par_lang.empty()) {
+                               // If we are in an environment, we have to
+                               // close the "outer" language afterwards
+                               string const & cur_lang = openLanguageName(state);
                                if (!style.isEnvironment()
                                    || (close_lang_switch
                                        && atSameLastLangSwitchDepth(state)
                                        && par_lang != outer_lang
-                                       && (par_lang != pol_lang
-                                           || (pol_lang != outer_lang
+                                       && (par_lang != cur_lang
+                                           || (cur_lang != outer_lang
                                                && nextpar
                                                && style != nextpar->layout())))
                                    || (atSameLastLangSwitchDepth(state)
                                        && state->lang_switch_depth_.size()
-                                       && pol_lang != par_lang))
+                                       && cur_lang != par_lang)
+                                   || in_polyglossia_rtl_env)
                                {
-                                       if (use_polyglossia && !localswitch)
+                                       if (using_begin_end && !localswitch)
                                                os << breakln;
                                        os << from_ascii(subst(
                                                lang_end_command,
@@ -1102,10 +1224,8 @@ void TeXOnePar(Buffer const & buf,
                                                par_lang));
                                        pending_newline = !localswitch;
                                        unskip_newline = !localswitch;
-                                       if (use_polyglossia && !localswitch) {
-                                               state->lang_switch_depth_.pop();
-                                               state->open_polyglossia_lang_.pop();
-                                       }
+                                       if (using_begin_end)
+                                               popLanguageName();
                                }
                        }
                }
@@ -1113,6 +1233,19 @@ void TeXOnePar(Buffer const & buf,
        if (closing_rtl_ltr_environment)
                os << "}";
 
+       // InTitle commands need to be closed after the language has been closed.
+       if (intitle_command) {
+               if (is_command) {
+                       os << '}';
+                       if (!style.postcommandargs().empty())
+                               latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
+                       if (runparams.encoding != prev_encoding) {
+                               runparams.encoding = prev_encoding;
+                               os << setEncoding(prev_encoding->iconvName());
+                       }
+               }
+       }
+
        bool const last_was_separator =
                par.size() > 0 && par.isEnvSeparator(par.size() - 1);
 
@@ -1121,7 +1254,7 @@ void TeXOnePar(Buffer const & buf,
                        // prevent unwanted whitespace
                        os << '%';
                if (!os.afterParbreak() && !last_was_separator)
-                       os << breakln;
+                       os << '\n';
        }
 
        // if this is a CJK-paragraph and the next isn't, close CJK
@@ -1214,20 +1347,20 @@ void TeXOnePar(Buffer const & buf,
                             && !text.inset().getLayout().parbreakIsNewline()
                             && style.latextype != LATEX_ITEM_ENVIRONMENT
                             && style.latextype != LATEX_LIST_ENVIRONMENT
-                            && style.align == par.getAlign()
+                            && style.align == par.getAlign(bparams)
                             && nextpar->getDepth() == par.getDepth()
-                            && nextpar->getAlign() == par.getAlign())
+                            && nextpar->getAlign(bparams) == par.getAlign(bparams))
                            || (!next_layout.isEnvironment()
                                && nextpar->getDepth() > par.getDepth()
-                               && nextpar->getAlign() == par.getAlign())
+                               && nextpar->getAlign(bparams) == next_layout.align)
                            || (!style.isEnvironment()
                                && next_layout.latextype == LATEX_ENVIRONMENT
                                && nextpar->getDepth() < par.getDepth())
                            || (style.isCommand()
                                && !next_layout.isEnvironment()
-                               && style.align == par.getAlign()
-                               && next_layout.align == nextpar->getAlign())
-                           || (style.align != par.getAlign()
+                               && style.align == par.getAlign(bparams)
+                               && next_layout.align == nextpar->getAlign(bparams))
+                           || (style.align != par.getAlign(bparams)
                                && tclass.isDefaultLayout(next_layout))) {
                                os << '\n';
                        }
@@ -1252,18 +1385,35 @@ void latexParagraphs(Buffer const & buf,
                { os << "% LaTeX Output Error\n"; return; } );
 
        BufferParams const & bparams = buf.params();
+       BufferParams const & mparams = buf.masterParams();
 
        bool const maintext = text.isMainText();
        bool const is_child = buf.masterBuffer() != &buf;
+       bool const multibib_child = maintext && is_child
+                       && mparams.multibib == "child";
+
+       if (multibib_child && mparams.useBiblatex())
+               os << "\\newrefsection";
+       else if (multibib_child && mparams.useBibtopic()
+                && !buf.masterBibInfo().empty()) {
+               os << "\\begin{btUnit}\n";
+               runparams.openbtUnit = true;
+       }
 
        // Open a CJK environment at the beginning of the main buffer
        // if the document's language is a CJK language
        // (but not in child documents)
        OutputState * state = getOutputState();
-       if (maintext && !is_child
-           && bparams.encoding().package() == Encoding::CJK) {
-               os << "\\begin{CJK}{" << from_ascii(bparams.encoding().latexName())
-               << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
+       if (maintext && !is_child && !bparams.useNonTeXFonts
+           && bparams.language->encoding()->package() == Encoding::CJK
+           && (bparams.encoding().name() == "utf8-cjk"
+               || bparams.encoding().iconvName() != "UTF-8")) {
+               docstring const cjkenc = (bparams.encoding().name() == "utf8-cjk"
+                                         && LaTeXFeatures::isAvailable("CJKutf8")) ?
+                                               from_ascii("UTF8")
+                                             : from_ascii(bparams.encoding().latexName());
+               os << "\\begin{CJK}{" << cjkenc
+                  << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
                state->open_encoding_ = CJK;
        }
        // if "auto begin" is switched off, explicitly switch the
@@ -1273,6 +1423,10 @@ void latexParagraphs(Buffer const & buf,
                : bparams.language->babel();
        string const lang_begin_command = runparams.use_polyglossia ?
                "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
+       string const lang_end_command = runparams.use_polyglossia ?
+               "\\end{$$lang}" : lyxrc.language_command_end;
+       bool const using_begin_end = runparams.use_polyglossia ||
+                                       !lang_end_command.empty();
 
        if (maintext && !lyxrc.language_auto_begin &&
            !mainlang.empty()) {
@@ -1283,10 +1437,8 @@ void latexParagraphs(Buffer const & buf,
                          : subst(lang_begin_command, "$$lang", mainlang);
                os << bc;
                os << '\n';
-               if (runparams.use_polyglossia) {
-                       state->lang_switch_depth_.push(state->nest_level_);
-                       state->open_polyglossia_lang_.push(mainlang);
-               }
+               if (using_begin_end)
+                       pushLanguageName(mainlang);
        }
 
        ParagraphList const & paragraphs = text.paragraphs();
@@ -1319,7 +1471,7 @@ void latexParagraphs(Buffer const & buf,
 
                if (layout.intitle) {
                        if (already_title) {
-                               if (!gave_layout_warning) {
+                               if (!gave_layout_warning && !runparams.dryrun) {
                                        gave_layout_warning = true;
                                        frontend::Alert::warning(_("Error in latexParagraphs"),
                                                        bformat(_("You are using at least one "
@@ -1336,7 +1488,7 @@ void latexParagraphs(Buffer const & buf,
                                                        << "}\n";
                                }
                        }
-               } else if (was_title && !already_title) {
+               } else if (was_title && !already_title && !layout.inpreamble) {
                        if (tclass.titletype() == TITLE_ENVIRONMENT) {
                                os << "\\end{" << from_ascii(tclass.titlename())
                                                << "}\n";
@@ -1349,13 +1501,23 @@ void latexParagraphs(Buffer const & buf,
                        was_title = false;
                }
 
+               if (layout.isCommand() && !layout.latexname().empty()
+                   && layout.latexname() == bparams.multibib) {
+                       if (runparams.openbtUnit)
+                               os << "\\end{btUnit}\n";
+                       if (!bparams.useBiblatex()
+                           && !buf.masterBibInfo().empty()) {
+                               os << '\n' << "\\begin{btUnit}\n";
+                               runparams.openbtUnit = true;
+                       }
+               }
 
                if (!layout.isEnvironment() && par->params().leftIndent().zero()) {
                        // This is a standard top level paragraph, TeX it and continue.
                        TeXOnePar(buf, text, pit, os, runparams, everypar);
                        continue;
                }
-               
+
                TeXEnvironmentData const data =
                        prepareEnvironment(buf, text, par, os, runparams);
                // pit can be changed in TeXEnvironment.
@@ -1381,20 +1543,21 @@ void latexParagraphs(Buffer const & buf,
                }
        }
 
+       if (maintext && !is_child && runparams.openbtUnit)
+               os << "\\end{btUnit}\n";
+
        // if "auto end" is switched off, explicitly close the language at the end
        // but only if the last par is in a babel or polyglossia language
-       string const lang_end_command = runparams.use_polyglossia ?
-               "\\end{$$lang}" : lyxrc.language_command_end;
+       Language const * const lastpar_language =
+                       paragraphs.at(lastpit).getParLanguage(bparams);
        if (maintext && !lyxrc.language_auto_end && !mainlang.empty() &&
-               paragraphs.at(lastpit).getParLanguage(bparams)->encoding()->package() != Encoding::CJK) {
+               lastpar_language->encoding()->package() != Encoding::CJK) {
                os << from_utf8(subst(lang_end_command,
                                        "$$lang",
                                        mainlang))
                        << '\n';
-               if (runparams.use_polyglossia) {
-                       state->lang_switch_depth_.pop();
-                       state->open_polyglossia_lang_.pop();
-               }
+               if (using_begin_end)
+                       popLanguageName();
        }
 
        // If the last paragraph is an environment, we'll have to close
@@ -1403,17 +1566,30 @@ void latexParagraphs(Buffer const & buf,
                os << "\\end{CJK}\n";
                state->open_encoding_ = none;
        }
-       // Likewise for polyglossia
-       string const & pol_lang = openPolyglossiaLang(state);
-       if (maintext && !is_child && !pol_lang.empty()) {
+       // Likewise for polyglossia or when using begin/end commands
+       // or at the very end of an active branch inset with a language switch
+       Language const * const outer_language = (runparams.local_font != 0)
+                       ? runparams.local_font->language() : bparams.language;
+       string const & prev_lang = runparams.use_polyglossia
+                       ? getPolyglossiaEnvName(outer_language)
+                       : outer_language->babel();
+       string const lastpar_lang = runparams.use_polyglossia ?
+               getPolyglossiaEnvName(lastpar_language): lastpar_language->babel();
+       string const & cur_lang = openLanguageName(state);
+       if (((runparams.inbranch && langOpenedAtThisLevel(state) && prev_lang != cur_lang)
+            || (maintext && !is_child)) && !cur_lang.empty()) {
                os << from_utf8(subst(lang_end_command,
                                        "$$lang",
-                                       pol_lang))
+                                       cur_lang))
                   << '\n';
-               if (runparams.use_polyglossia) {
-                       state->lang_switch_depth_.pop();
-                       state->open_polyglossia_lang_.pop();
-               }
+               if (using_begin_end)
+                       popLanguageName();
+       } else if (runparams.inbranch && !using_begin_end
+                  && prev_lang != lastpar_lang && !lastpar_lang.empty()) {
+               // with !using_begin_end, cur_lang is empty, so we need to
+               // compare against the paragraph language (and we are in the
+               // last paragraph at this point)
+               os << subst(lang_begin_command, "$$lang", prev_lang) << '\n';
        }
 
        // reset inherited encoding
@@ -1422,6 +1598,11 @@ void latexParagraphs(Buffer const & buf,
                if (state->cjk_inherited_ == 0)
                        state->open_encoding_ = CJK;
        }
+
+       if (multibib_child && mparams.useBibtopic()) {
+               os << "\\end{btUnit}\n";
+               runparams.openbtUnit = false;
+       }
 }
 
 
@@ -1433,15 +1614,17 @@ pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
        // * with useNonTeXFonts: "utf8plain",
        // * with XeTeX and TeX fonts: "ascii" (inputenc fails),
        // * with LuaTeX and TeX fonts: only one encoding accepted by luainputenc.
-       if (runparams.isFullUnicode())
+       if (runparams.isFullUnicode() || newEnc.name() == "inherit")
                return make_pair(false, 0);
 
        Encoding const & oldEnc = *runparams.encoding;
        bool moving_arg = runparams.moving_arg;
-       // If we switch from/to CJK, we need to switch anyway, despite custom inputenc
-       bool const from_to_cjk = 
-               (oldEnc.package() == Encoding::CJK && newEnc.package() != Encoding::CJK)
-               || (oldEnc.package() != Encoding::CJK && newEnc.package() == Encoding::CJK);
+       // If we switch from/to CJK, we need to switch anyway, despite custom inputenc,
+       // except if we use CJKutf8
+       bool const from_to_cjk =
+               ((oldEnc.package() == Encoding::CJK && newEnc.package() != Encoding::CJK)
+               || (oldEnc.package() != Encoding::CJK && newEnc.package() == Encoding::CJK))
+               && (bparams.encoding().name() != "utf8-cjk" || !LaTeXFeatures::isAvailable("CJKutf8"));
        if (!force && !from_to_cjk
            && ((bparams.inputenc != "auto" && bparams.inputenc != "default") || moving_arg))
                return make_pair(false, 0);
@@ -1513,7 +1696,11 @@ pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
                                os << "\\egroup";
                                count += 7;
                        }
-                       os << "\\begin{CJK}{" << inputenc_arg << "}{"
+                       docstring const cjkenc = (bparams.encoding().name() == "utf8-cjk"
+                                                 && LaTeXFeatures::isAvailable("CJKutf8")) ?
+                                                       from_ascii("UTF8")
+                                                     : from_ascii(bparams.encoding().latexName());
+                       os << "\\begin{CJK}{" << cjkenc << "}{"
                           << from_ascii(bparams.fonts_cjk) << "}";
                        state->open_encoding_ = CJK;
                        return make_pair(true, count + 15);