]> git.lyx.org Git - lyx.git/blobdiff - src/output_latex.cpp
Wininstaller, fix bug where previous installations, with emergency version greater...
[lyx.git] / src / output_latex.cpp
index cfd05a9e2941e55c7ade6c7fd227d33fcd6acdd4..3838ba39934729033881c1b06d08ed2672c7eb37 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"
@@ -142,11 +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);
@@ -292,9 +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;
        }
@@ -510,7 +522,7 @@ void getArgInsets(otexstream & os, OutputParams const & runparams, Layout::LaTeX
 }
 
 
-} // namespace anon
+} // namespace
 
 
 void pushLanguageName(string const & lang_name, bool localswitch)
@@ -532,6 +544,14 @@ void popLanguageName()
 }
 
 
+string const & openLanguageName()
+{
+       OutputState * state = getOutputState();
+
+       return openLanguageName(state);
+}
+
+
 namespace {
 
 void addArgInsets(Paragraph const & par, string const & prefix,
@@ -563,7 +583,7 @@ void addArgInsets(Paragraph const & par, string const & prefix,
        }
 }
 
-} // anon namespace
+} // namespace
 
 
 void latexArgInsets(Paragraph const & par, otexstream & os,
@@ -639,7 +659,7 @@ 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:
@@ -666,7 +686,7 @@ void parStartCommand(Paragraph const & par, otexstream & os,
        }
 }
 
-} // namespace anon
+} // namespace
 
 // FIXME: this should be anonymous
 void TeXOnePar(Buffer const & buf,
@@ -675,7 +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();
@@ -686,7 +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 << " '"
@@ -720,18 +741,26 @@ 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;
+       // Intitle commands switch languages locally, thus increase
+       // language nesting level
+       if (intitle_command)
+               state->nest_level_ += 1;
+
        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
@@ -772,18 +801,39 @@ 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 ?
@@ -804,32 +854,50 @@ void TeXOnePar(Buffer const & buf,
        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()
-                       || (using_begin_end && 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 ((!using_begin_end || langOpenedAtThisLevel(state)) &&
-                   !lang_end_command.empty() &&
-                   prev_lang != outer_lang &&
-                   !prev_lang.empty() &&
-                   (!using_begin_end || !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 (using_begin_end)
                                popLanguageName();
@@ -882,10 +950,12 @@ 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 != openLanguageName(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, "$$lang", par_lang);
                                os << bc;
                                os << lang_command_termination;
@@ -931,7 +1001,11 @@ void TeXOnePar(Buffer const & buf,
                        // context (nesting issue).
                        if (par_language->encoding()->package() == Encoding::CJK
                                && state->open_encoding_ != CJK && state->cjk_inherited_ == 0) {
-                               os << "\\begin{CJK}{" << from_ascii(par_language->encoding()->latexName())
+                               docstring const cjkenc = (bparams.encoding().name() == "utf8-cjk"
+                                                         && LaTeXFeatures::isAvailable("CJKutf8")) ?
+                                                               from_ascii("UTF8")
+                                                             : from_ascii(par_language->encoding()->latexName());
+                               os << "\\begin{CJK}{" << cjkenc
                                   << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
                                state->open_encoding_ = CJK;
                        }
@@ -944,11 +1018,13 @@ void TeXOnePar(Buffer const & buf,
                                if (runparams.encoding->package() == Encoding::CJK
                                    && par_lang != openLanguageName(state)
                                    && !par_lang.empty()) {
-                                       os << from_ascii(subst(
-                                               lang_begin_command,
-                                               "$$lang",
-                                               par_lang))
-                                       << lang_command_termination;
+                                       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);
                                }
@@ -967,34 +1043,39 @@ 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)
@@ -1002,20 +1083,16 @@ 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());
+                       }
                }
        }
 
@@ -1045,15 +1122,16 @@ void TeXOnePar(Buffer const & buf,
                        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)
@@ -1069,9 +1147,10 @@ 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.
+       // 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"
@@ -1083,8 +1162,10 @@ 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)
+       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)))) {
@@ -1092,7 +1173,7 @@ void TeXOnePar(Buffer const & buf,
                // 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
@@ -1111,7 +1192,8 @@ void TeXOnePar(Buffer const & buf,
                                    && 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;
@@ -1135,7 +1217,8 @@ void TeXOnePar(Buffer const & buf,
                                                && style != nextpar->layout())))
                                    || (atSameLastLangSwitchDepth(state)
                                        && state->lang_switch_depth_.size()
-                                       && cur_lang != par_lang))
+                                       && cur_lang != par_lang)
+                                   || in_polyglossia_rtl_env)
                                {
                                        if (using_begin_end && !localswitch)
                                                os << breakln;
@@ -1154,6 +1237,19 @@ 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);
 
@@ -1222,6 +1318,9 @@ void TeXOnePar(Buffer const & buf,
        else
                runparams_in.encoding = runparams.encoding;
 
+       // These need to be passed upstream as well
+       runparams_in.need_maketitle = runparams.need_maketitle;
+       runparams_in.have_maketitle = runparams.have_maketitle;
 
        // we don't need a newline for the last paragraph!!!
        // Note from JMarc: we will re-add a \n explicitly in
@@ -1255,26 +1354,30 @@ 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';
                        }
                }
        }
 
+       // Reset language nesting level after intitle command
+       if (intitle_command)
+               state->nest_level_ -= 1;
+
        LYXERR(Debug::LATEX, "TeXOnePar for paragraph " << pit << " done; ptr "
                << &par << " next " << nextpar);
 
@@ -1302,7 +1405,8 @@ void latexParagraphs(Buffer const & buf,
 
        if (multibib_child && mparams.useBiblatex())
                os << "\\newrefsection";
-       else if (multibib_child && mparams.useBibtopic()) {
+       else if (multibib_child && mparams.useBibtopic()
+                && !buf.masterBibInfo().empty()) {
                os << "\\begin{btUnit}\n";
                runparams.openbtUnit = true;
        }
@@ -1311,10 +1415,16 @@ void latexParagraphs(Buffer const & buf,
        // 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
@@ -1354,9 +1464,6 @@ void latexParagraphs(Buffer const & buf,
        pit_type pit = runparams.par_begin;
        // lastpit is for the language check after the loop.
        pit_type lastpit = pit;
-       // variables used in the loop:
-       bool was_title = false;
-       bool already_title = false;
        DocumentClass const & tclass = bparams.documentClass();
 
        // Did we already warn about inTitle layout mixing? (we only warn once)
@@ -1371,7 +1478,7 @@ void latexParagraphs(Buffer const & buf,
                                tclass.plainLayout() : par->layout();
 
                if (layout.intitle) {
-                       if (already_title) {
+                       if (runparams.have_maketitle) {
                                if (!gave_layout_warning && !runparams.dryrun) {
                                        gave_layout_warning = true;
                                        frontend::Alert::warning(_("Error in latexParagraphs"),
@@ -1381,15 +1488,16 @@ void latexParagraphs(Buffer const & buf,
                                                          "could lead to missing or incorrect output."
                                                          ), layout.name()));
                                }
-                       } else if (!was_title) {
-                               was_title = true;
+                       } else if (!runparams.need_maketitle) {
+                               runparams.need_maketitle = true;
                                if (tclass.titletype() == TITLE_ENVIRONMENT) {
                                        os << "\\begin{"
                                                        << from_ascii(tclass.titlename())
                                                        << "}\n";
                                }
                        }
-               } else if (was_title && !already_title && !layout.inpreamble) {
+               } else if (runparams.need_maketitle && !runparams.have_maketitle
+                          && !layout.inpreamble && !text.inset().isInTitle()) {
                        if (tclass.titletype() == TITLE_ENVIRONMENT) {
                                os << "\\end{" << from_ascii(tclass.titlename())
                                                << "}\n";
@@ -1398,15 +1506,16 @@ void latexParagraphs(Buffer const & buf,
                                os << "\\" << from_ascii(tclass.titlename())
                                                << "\n";
                        }
-                       already_title = true;
-                       was_title = false;
+                       runparams.have_maketitle = true;
+                       runparams.need_maketitle = false;
                }
 
                if (layout.isCommand() && !layout.latexname().empty()
                    && layout.latexname() == bparams.multibib) {
                        if (runparams.openbtUnit)
                                os << "\\end{btUnit}\n";
-                       if (!bparams.useBiblatex()) {
+                       if (!bparams.useBiblatex()
+                           && !buf.masterBibInfo().empty()) {
                                os << '\n' << "\\begin{btUnit}\n";
                                runparams.openbtUnit = true;
                        }
@@ -1417,7 +1526,7 @@ void latexParagraphs(Buffer const & buf,
                        TeXOnePar(buf, text, pit, os, runparams, everypar);
                        continue;
                }
-               
+
                TeXEnvironmentData const data =
                        prepareEnvironment(buf, text, par, os, runparams);
                // pit can be changed in TeXEnvironment.
@@ -1432,8 +1541,11 @@ void latexParagraphs(Buffer const & buf,
                        //os << '\n';
        }
 
-       // It might be that we only have a title in this document
-       if (was_title && !already_title) {
+       // It might be that we only have a title in this document.
+       // But if we're in an inset, this is not the end of
+       // the document. (There may be some other checks of this
+       // kind that are needed.)
+       if (runparams.need_maketitle && !runparams.have_maketitle && maintext) {
                if (tclass.titletype() == TITLE_ENVIRONMENT) {
                        os << "\\end{" << from_ascii(tclass.titlename())
                           << "}\n";
@@ -1448,13 +1560,17 @@ void latexParagraphs(Buffer const & buf,
 
        // 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
+       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 (using_begin_end)
+               // If we have language_auto_begin, the stack will
+               // already be empty, nothing to pop()
+               if (using_begin_end && !lyxrc.language_auto_begin)
                        popLanguageName();
        }
 
@@ -1465,14 +1581,29 @@ void latexParagraphs(Buffer const & buf,
                state->open_encoding_ = none;
        }
        // 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 (maintext && !is_child && !cur_lang.empty()) {
+       if (((runparams.inbranch && langOpenedAtThisLevel(state) && prev_lang != cur_lang)
+            || (maintext && !is_child)) && !cur_lang.empty()) {
                os << from_utf8(subst(lang_end_command,
                                        "$$lang",
                                        cur_lang))
                   << '\n';
                if (using_begin_end)
                        popLanguageName();
+       } else if (runparams.inbranch && !using_begin_end
+                  && prev_lang != lastpar_lang && !lastpar_lang.empty()) {
+               // with !using_begin_end, cur_lang is empty, so we need to
+               // compare against the paragraph language (and we are in the
+               // last paragraph at this point)
+               os << subst(lang_begin_command, "$$lang", prev_lang) << '\n';
        }
 
        // reset inherited encoding
@@ -1497,15 +1628,17 @@ 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);
@@ -1577,7 +1710,11 @@ 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);