]> git.lyx.org Git - lyx.git/blobdiff - src/output_latex.cpp
This is LyX 2.2.0
[lyx.git] / src / output_latex.cpp
index 1cf63fbe0bef41fa19521dee19bb544479e739d8..5d385e5e09929b54bed248091641bd30007a3b67 100644 (file)
@@ -24,7 +24,6 @@
 #include "Paragraph.h"
 #include "ParagraphParameters.h"
 #include "TextClass.h"
-#include "TexRow.h"
 
 #include "insets/InsetBibitem.h"
 #include "insets/InsetArgument.h"
 #include "support/convert.h"
 #include "support/debug.h"
 #include "support/lstrings.h"
+#include "support/lyxalgo.h"
 #include "support/textutils.h"
 
-#include <algorithm>
-#include <boost/next_prior.hpp>
+#include <QThreadStorage>
+
 #include <list>
 
 using namespace std;
@@ -53,13 +53,29 @@ enum OpenEncoding {
        CJK
 };
 
-// FIXME THREAD
-// There could easily be a conflict here, with the export process
-// setting this one way, and a View>Source process (possbily for
-// another Buffer) resetting it.
-static int open_encoding_ = none;
-static int cjk_inherited_ = 0;
-Language const * prev_env_language_ = 0;
+
+struct OutputState
+{
+       OutputState() : open_encoding_(none), cjk_inherited_(0),
+                       prev_env_language_(0), open_polyglossia_lang_("")
+       {
+       }
+       OpenEncoding open_encoding_;
+       int cjk_inherited_;
+       Language const * prev_env_language_;
+       string open_polyglossia_lang_;
+};
+
+
+OutputState * getOutputState()
+{
+       // FIXME An instance of OutputState should be kept around for each export
+       //       instead of using local thread storage
+       static QThreadStorage<OutputState *> outputstate;
+       if (!outputstate.hasLocalData())
+               outputstate.setLocalData(new OutputState);
+       return outputstate.localData();
+}
 
 
 string const getPolyglossiaEnvName(Language const * lang)
@@ -72,6 +88,20 @@ string const getPolyglossiaEnvName(Language const * lang)
 }
 
 
+string const getPolyglossiaBegin(string const & lang_begin_command,
+                                string const & lang, string const & opts)
+{
+       string result;
+       if (!lang.empty())
+               result = subst(lang_begin_command, "$$lang", lang);
+       string options = opts.empty() ?
+                   string() : "[" + opts + "]";
+       result = subst(result, "$$opts", options);
+
+       return result;
+}
+
+
 struct TeXEnvironmentData
 {
        bool cjk_nested;
@@ -99,9 +129,10 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
 
        ParagraphList const & paragraphs = text.paragraphs();
        ParagraphList::const_iterator const priorpit =
-               pit == paragraphs.begin() ? pit : boost::prior(pit);
+               pit == paragraphs.begin() ? pit : prev(pit, 1);
 
-       bool const use_prev_env_language = prev_env_language_ != 0
+       OutputState * state = getOutputState();
+       bool const use_prev_env_language = state->prev_env_language_ != 0
                        && priorpit->layout().isEnvironment()
                        && (priorpit->getDepth() > pit->getDepth()
                            || (priorpit->getDepth() == pit->getDepth()
@@ -112,7 +143,7 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
        Language const * const doc_language = bparams.language;
        Language const * const prev_par_language =
                (pit != paragraphs.begin())
-               ? (use_prev_env_language ? prev_env_language_
+               ? (use_prev_env_language ? state->prev_env_language_
                                         : priorpit->getParLanguage(bparams))
                : doc_language;
 
@@ -143,17 +174,13 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
                if ((lang_end_command.empty() ||
                    par_lang != doc_lang) &&
                    !par_lang.empty()) {
-                       os << from_ascii(subst(
-                               lang_begin_command,
-                               "$$lang",
-                               par_lang));
-                       if (use_polyglossia
-                           && !data.par_language->polyglossiaOpts().empty())
-                                       os << "["
-                                          << from_ascii(data.par_language->polyglossiaOpts())
-                                          << "]";
-                         // the '%' is necessary to prevent unwanted whitespace
-                       os << "%\n";
+                           string bc = use_polyglossia ?
+                                       getPolyglossiaBegin(lang_begin_command, par_lang,
+                                                           data.par_language->polyglossiaOpts())
+                                     : subst(lang_begin_command, "$$lang", par_lang);
+                           os << bc;
+                           // the '%' is necessary to prevent unwanted whitespace
+                           os << "%\n";
                }
        }
 
@@ -166,6 +193,8 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
        }
 
        if (style.isEnvironment()) {
+               if (par_lang != doc_lang)
+                       state->open_polyglossia_lang_ = par_lang;
                os << "\\begin{" << from_ascii(style.latexname()) << '}';
                if (!style.latexargs().empty()) {
                        OutputParams rp = runparams;
@@ -191,56 +220,50 @@ static TeXEnvironmentData prepareEnvironment(Buffer const & buf,
        // in multilingual environments, the CJK tags have to be nested properly
        data.cjk_nested = false;
        if (data.par_language->encoding()->package() == Encoding::CJK &&
-           open_encoding_ != CJK && pit->isMultiLingual(bparams)) {
+           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())
                           << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
-               open_encoding_ = CJK;
+               state->open_encoding_ = CJK;
                data.cjk_nested = true;
        }
        return data;
 }
 
 
-static void finishEnvironment(Buffer const & buf, Text const & text,
-                             pit_type nextpit, otexstream & os,
-                             OutputParams const & runparams,
+static void finishEnvironment(otexstream & os, OutputParams const & runparams,
                              TeXEnvironmentData const & data)
 {
-       if (open_encoding_ == CJK && data.cjk_nested) {
+       OutputState * state = getOutputState();
+       // BufferParams const & bparams = buf.params(); // FIXME: for speedup shortcut below, would require passing of "buf" as argument
+       if (state->open_encoding_ == CJK && data.cjk_nested) {
                // We need to close the encoding even if it does not change
                // to do correct environment nesting
                os << "\\end{CJK}\n";
-               open_encoding_ = none;
+               state->open_encoding_ = none;
        }
 
        if (data.style->isEnvironment()) {
                os << breakln
                   << "\\end{" << from_ascii(data.style->latexname()) << "}\n";
-               prev_env_language_ = data.par_language;
+               state->prev_env_language_ = data.par_language;
                if (runparams.encoding != data.prev_encoding) {
                        runparams.encoding = data.prev_encoding;
-                       if (!runparams.isFullUnicode())
-                               os << setEncoding(data.prev_encoding->iconvName());
+                       os << setEncoding(data.prev_encoding->iconvName());
                }
        }
 
        if (data.leftindent_open) {
                os << breakln << "\\end{LyXParagraphLeftIndent}\n";
-               prev_env_language_ = data.par_language;
+               state->prev_env_language_ = data.par_language;
                if (runparams.encoding != data.prev_encoding) {
                        runparams.encoding = data.prev_encoding;
-                       if (!runparams.isFullUnicode())
-                               os << setEncoding(data.prev_encoding->iconvName());
+                       os << setEncoding(data.prev_encoding->iconvName());
                }
        }
 
        // Check whether we should output a blank line after the environment
-       DocumentClass const & tclass = buf.params().documentClass();
-       ParagraphList const & pars = text.paragraphs();
-       bool next_style_is_default = (nextpit >= runparams.par_end) ? false
-               : tclass.isDefaultLayout(pars.constIterator(nextpit)->layout());
-       if (!data.style->nextnoindent && next_style_is_default)
+       if (!data.style->nextnoindent)
                os << '\n';
 }
 
@@ -306,7 +329,7 @@ void TeXEnvironment(Buffer const & buf, Text const & text,
                        prepareEnvironment(buf, text, par, os, runparams);
                // Recursive call to TeXEnvironment!
                TeXEnvironment(buf, text, runparams, pit, os);
-               finishEnvironment(buf, text, pit + 1, os, runparams, data);
+               finishEnvironment(os, runparams, data);
        }
 
        if (pit != runparams.par_end)
@@ -447,9 +470,9 @@ void latexArgInsets(ParagraphList const & pars, ParagraphList::const_iterator pi
        // get the first paragraph in sequence with this layout and depth
        pit_type offset = 0;
        while (true) {
-               if (boost::prior(pit, offset) == pars.begin())
+               if (lyx::prev(pit, offset) == pars.begin())
                        break;
-               ParagraphList::const_iterator priorpit = boost::prior(pit, offset + 1);
+               ParagraphList::const_iterator priorpit = lyx::prev(pit, offset + 1);
                if (priorpit->layout() == current_layout
                    && priorpit->params().depth() == current_depth)
                        ++offset;
@@ -457,7 +480,7 @@ void latexArgInsets(ParagraphList const & pars, ParagraphList::const_iterator pi
                        break;
        }
 
-       ParagraphList::const_iterator spit = boost::prior(pit, offset);
+       ParagraphList::const_iterator spit = lyx::prev(pit, offset);
 
        for (; spit != pars.end(); ++spit) {
                if (spit->layout() != current_layout || spit->params().depth() < current_depth)
@@ -541,7 +564,7 @@ void TeXOnePar(Buffer const & buf,
        Paragraph const & par = paragraphs.at(pit);
        // FIXME This check should not really be needed.
        // Perhaps we should issue an error if it is.
-       Layout const style = text.inset().forcePlainLayout() ?
+       Layout const style = text.inset().forcePlainLayout() ?
                bparams.documentClass().plainLayout() : par.layout();
 
        if (style.inpreamble)
@@ -561,10 +584,11 @@ void TeXOnePar(Buffer const & buf,
        bool const maintext = text.isMainText();
        // we are at the beginning of an inset and CJK is already open;
        // we count inheritation levels to get the inset nesting right.
+       OutputState * state = getOutputState();
        if (pit == 0 && !maintext
-           && (cjk_inherited_ > 0 || open_encoding_ == CJK)) {
-               cjk_inherited_ += 1;
-               open_encoding_ = none;
+           && (state->cjk_inherited_ > 0 || state->open_encoding_ == CJK)) {
+               state->cjk_inherited_ += 1;
+               state->open_encoding_ = none;
        }
 
        if (text.inset().isPassThru()) {
@@ -612,6 +636,8 @@ void TeXOnePar(Buffer const & buf,
 
        // This paragraph's language
        Language const * const par_language = par.getParLanguage(bparams);
+       Language const * const nextpar_language = nextpar ?
+               nextpar->getParLanguage(bparams) : 0;
        // The document's language
        Language const * const doc_language = bparams.language;
        // The language that was in effect when the environment this paragraph is
@@ -627,7 +653,7 @@ 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.
-       bool const use_prev_env_language = prev_env_language_ != 0
+       bool const use_prev_env_language = state->prev_env_language_ != 0
                        && priorpar
                        && priorpar->layout().isEnvironment()
                        && (priorpar->getDepth() > par.getDepth()
@@ -635,7 +661,7 @@ void TeXOnePar(Buffer const & buf,
                                    && priorpar->layout() != par.layout()));
        Language const * const prev_language =
                (pit != 0)
-               ? (use_prev_env_language ? prev_env_language_
+               ? (use_prev_env_language ? state->prev_env_language_
                                         : priorpar->getParLanguage(bparams))
                : outer_language;
 
@@ -645,22 +671,23 @@ void TeXOnePar(Buffer const & buf,
                getPolyglossiaEnvName(par_language): par_language->babel();
        string const prev_lang = use_polyglossia ?
                getPolyglossiaEnvName(prev_language) : prev_language->babel();
-       string const doc_lang = use_polyglossia ?
-               getPolyglossiaEnvName(doc_language) : doc_language->babel();
        string const outer_lang = use_polyglossia ?
                getPolyglossiaEnvName(outer_language) : outer_language->babel();
+       string const nextpar_lang = nextpar_language ? (use_polyglossia ?
+               getPolyglossiaEnvName(nextpar_language) :
+               nextpar_language->babel()) : string();
        string lang_begin_command = use_polyglossia ?
-               "\\begin{$$lang}" : lyxrc.language_command_begin;
+               "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
        string lang_end_command = use_polyglossia ?
                "\\end{$$lang}" : lyxrc.language_command_end;
        // the '%' is necessary to prevent unwanted whitespace
        string lang_command_termination = "%\n";
 
        // In some insets (such as Arguments), we cannot use \selectlanguage
-       bool const localswitch = !use_polyglossia
-               && text.inset().getLayout().forcelocalfontswitch();
+       bool const localswitch = text.inset().forceLocalFontSwitch();
        if (localswitch) {
-               lang_begin_command = lyxrc.language_command_local;
+               lang_begin_command = use_polyglossia ?
+                           "\\text$$lang$$opts{" : lyxrc.language_command_local;
                lang_end_command = "}";
                lang_command_termination.clear();
        }
@@ -680,6 +707,8 @@ void TeXOnePar(Buffer const & buf,
                                "$$lang",
                                prev_lang))
                           << lang_command_termination;
+                       if (prev_lang == state->open_polyglossia_lang_)
+                               state->open_polyglossia_lang_ = "";
                }
 
                // We need to open a new language if we couldn't close the previous
@@ -728,15 +757,10 @@ 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.empty()) {
-                               os << from_ascii(subst(
-                                       lang_begin_command,
-                                       "$$lang",
-                                       par_lang));
-                               if (use_polyglossia
-                                   && !par_language->polyglossiaOpts().empty())
-                                               os << "["
-                                                 << from_ascii(par_language->polyglossiaOpts())
-                                                 << "]";
+                               string bc = use_polyglossia ?
+                                         getPolyglossiaBegin(lang_begin_command, par_lang, par_language->polyglossiaOpts())
+                                         : subst(lang_begin_command, "$$lang", par_lang);
+                               os << bc;
                                os << lang_command_termination;
                        }
                }
@@ -746,6 +770,7 @@ void TeXOnePar(Buffer const & buf,
        // encoding, since this only affects the position of the outputted
        // \inputencoding command; the encoding switch will occur when necessary
        if (bparams.inputenc == "auto"
+               && !runparams.isFullUnicode() // Xe/LuaTeX use one document-wide encoding  (see also switchEncoding())
                && runparams.encoding->package() != Encoding::none) {
                // Look ahead for future encoding changes.
                // We try to output them at the beginning of the paragraph,
@@ -776,10 +801,10 @@ void TeXOnePar(Buffer const & buf,
                        // the following is necessary after a CJK environment in a multilingual
                        // context (nesting issue).
                        if (par_language->encoding()->package() == Encoding::CJK
-                               && open_encoding_ != CJK && cjk_inherited_ == 0) {
+                               && state->open_encoding_ != CJK && state->cjk_inherited_ == 0) {
                                os << "\\begin{CJK}{" << from_ascii(par_language->encoding()->latexName())
                                   << "}{" << from_ascii(bparams.fonts_cjk) << "}%\n";
-                               open_encoding_ = CJK;
+                               state->open_encoding_ = CJK;
                        }
                        if (encoding->package() != Encoding::none && enc_switch.first) {
                                if (enc_switch.second > 0) {
@@ -835,9 +860,9 @@ void TeXOnePar(Buffer const & buf,
        // calculates the space between the baselines according
        // to this font. (Matthias)
        //
-       // Is this really needed ? (Dekel)
-       // We do not need to use to change the font for the last paragraph
-       // or for a command.
+       // We must not change the font for the last paragraph
+       // of non-multipar insets, tabular cells or commands,
+       // since this produces unwanted whitespace.
 
        Font const font = par.empty()
                 ? par.getLayoutFont(bparams, outerfont)
@@ -846,7 +871,9 @@ void TeXOnePar(Buffer const & buf,
        bool const is_command = style.isCommand();
 
        if (style.resfont.size() != font.fontInfo().size()
-           && nextpar
+           && (nextpar || maintext
+               || (text.inset().paragraphs().size() > 1
+                   && text.inset().lyxCode() != CELL_CODE))
            && !is_command) {
                os << '{';
                os << "\\" << from_ascii(font.latexSize()) << " \\par}";
@@ -856,8 +883,7 @@ void TeXOnePar(Buffer const & buf,
                        latexArgInsets(par, os, runparams, style.postcommandargs(), "post:");
                if (runparams.encoding != prev_encoding) {
                        runparams.encoding = prev_encoding;
-                       if (!runparams.isFullUnicode())
-                               os << setEncoding(prev_encoding->iconvName());
+                       os << setEncoding(prev_encoding->iconvName());
                }
        }
 
@@ -912,13 +938,12 @@ void TeXOnePar(Buffer const & buf,
                && runparams.local_font != 0
                && runparams.local_font->isRightToLeft() != par_language->rightToLeft()
                // are we about to close the language?
-               &&((nextpar && par_language->babel() != (nextpar->getParLanguage(bparams))->babel())
-                  || (runparams.isLastPar && par_language->babel() != outer_language->babel()));
+               &&((nextpar && par_lang != nextpar_lang)
+                  || (runparams.isLastPar && par_lang != outer_lang));
 
        if (closing_rtl_ltr_environment
            || (runparams.isLastPar
-               && ((!use_polyglossia && par_language->babel() != outer_language->babel())
-                   || (use_polyglossia && par_language->polyglossia() != outer_language->polyglossia())))) {
+               && par_lang != outer_lang)) {
                // Since \selectlanguage write the language to the aux file,
                // we need to reset the language at the end of footnote or
                // float.
@@ -939,20 +964,24 @@ void TeXOnePar(Buffer const & buf,
                                        ? getPolyglossiaEnvName(current_language)
                                        : current_language->babel();
                                if (!current_lang.empty()) {
+                                       string bc = use_polyglossia ?
+                                                   getPolyglossiaBegin(lang_begin_command, current_lang,
+                                                                       current_language->polyglossiaOpts())
+                                                 : subst(lang_begin_command, "$$lang", current_lang);
+                                       os << bc;
+                                       pending_newline = !localswitch;
+                                       unskip_newline = !localswitch;
+                               }
+                       } else if (!par_lang.empty()) {
+                               // If we are in an environment, we have to close the "outer" language afterwards
+                               if (!style.isEnvironment() || state->open_polyglossia_lang_ != par_lang) {
                                        os << from_ascii(subst(
-                                               lang_begin_command,
+                                               lang_end_command,
                                                "$$lang",
-                                               current_lang));
+                                               par_lang));
                                        pending_newline = !localswitch;
                                        unskip_newline = !localswitch;
                                }
-                       } else if (!par_lang.empty()) {
-                               os << from_ascii(subst(
-                                       lang_end_command,
-                                       "$$lang",
-                                       par_lang));
-                               pending_newline = !localswitch;
-                               unskip_newline = !localswitch;
                        }
                }
        }
@@ -973,19 +1002,19 @@ void TeXOnePar(Buffer const & buf,
        // if this is a CJK-paragraph and the next isn't, close CJK
        // also if the next paragraph is a multilingual environment (because of nesting)
        if (nextpar
-               && open_encoding_ == CJK
-               && (nextpar->getParLanguage(bparams)->encoding()->package() != Encoding::CJK
+               && state->open_encoding_ == CJK
+               && (nextpar_language->encoding()->package() != Encoding::CJK
                   || (nextpar->layout().isEnvironment() && nextpar->isMultiLingual(bparams)))
                // inbetween environments, CJK has to be closed later (nesting!)
                && (!style.isEnvironment() || !nextpar->layout().isEnvironment())) {
                os << "\\end{CJK}\n";
-               open_encoding_ = none;
+               state->open_encoding_ = none;
        }
 
        // If this is the last paragraph, close the CJK environment
        // if necessary. If it's an environment, we'll have to \end that first.
        if (runparams.isLastPar && !style.isEnvironment()) {
-               switch (open_encoding_) {
+               switch (state->open_encoding_) {
                        case CJK: {
                                // do nothing at the end of child documents
                                if (maintext && buf.masterBuffer() != &buf)
@@ -996,12 +1025,12 @@ void TeXOnePar(Buffer const & buf,
                                // end of an inset
                                } else
                                        os << "\\end{CJK}";
-                               open_encoding_ = none;
+                               state->open_encoding_ = none;
                                break;
                        }
                        case inputenc: {
                                os << "\\egroup";
-                               open_encoding_ = none;
+                               state->open_encoding_ = none;
                                break;
                        }
                        case none:
@@ -1012,14 +1041,14 @@ void TeXOnePar(Buffer const & buf,
        }
 
        // If this is the last paragraph, and a local_font was set upon entering
-       // the inset, and we're using "auto" or "default" encoding, the encoding
+       // the inset, and we're using "auto" or "default" encoding, and not
+       // compiling with XeTeX or LuaTeX, the encoding
        // should be set back to that local_font's encoding.
-       // However, do not change the encoding when a fully unicode aware backend
-       // such as XeTeX is used.
        if (runparams.isLastPar && runparams_in.local_font != 0
            && runparams_in.encoding != runparams_in.local_font->language()->encoding()
            && (bparams.inputenc == "auto" || bparams.inputenc == "default")
-           && (!runparams.isFullUnicode())) {
+               && !runparams.isFullUnicode()
+          ) {
                runparams_in.encoding = runparams_in.local_font->language()->encoding();
                os << setEncoding(runparams_in.encoding->iconvName());
        }
@@ -1048,13 +1077,16 @@ void TeXOnePar(Buffer const & buf,
                        // unchanged, or (case 2) the following is a
                        // non-environment paragraph whose depth is increased
                        // but whose alignment is unchanged, or (case 3) the
+                       // paragraph is not an environment and the next one is a
+                       // non-itemize-like env at lower depth, or (case 4) the
                        // paragraph is a command not followed by an environment
                        // and the alignment of the current and next paragraph
-                       // is unchanged, or (case 4) the current alignment is
+                       // is unchanged, or (case 5) the current alignment is
                        // changed and a standard paragraph follows.
                        DocumentClass const & tclass = bparams.documentClass();
                        if ((style == next_layout
                             && !style.parbreak_is_newline
+                            && !text.inset().getLayout().parbreakIsNewline()
                             && style.latextype != LATEX_ITEM_ENVIRONMENT
                             && style.latextype != LATEX_LIST_ENVIRONMENT
                             && style.align == par.getAlign()
@@ -1063,6 +1095,9 @@ void TeXOnePar(Buffer const & buf,
                            || (!next_layout.isEnvironment()
                                && nextpar->getDepth() > par.getDepth()
                                && nextpar->getAlign() == par.getAlign())
+                           || (!style.isEnvironment()
+                               && next_layout.latextype == LATEX_ENVIRONMENT
+                               && nextpar->getDepth() < par.getDepth())
                            || (style.isCommand()
                                && !next_layout.isEnvironment()
                                && style.align == par.getAlign()
@@ -1099,11 +1134,12 @@ void latexParagraphs(Buffer const & buf,
        // 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";
-               open_encoding_ = CJK;
+               state->open_encoding_ = CJK;
        }
        // if "auto begin" is switched off, explicitly switch the
        // language on at start
@@ -1111,19 +1147,16 @@ void latexParagraphs(Buffer const & buf,
                ? getPolyglossiaEnvName(bparams.language)
                : bparams.language->babel();
        string const lang_begin_command = runparams.use_polyglossia ?
-               "\\begin{$$lang}" : lyxrc.language_command_begin;
+               "\\begin{$$lang}$$opts" : lyxrc.language_command_begin;
 
        if (maintext && !lyxrc.language_auto_begin &&
            !mainlang.empty()) {
                // FIXME UNICODE
-               os << from_utf8(subst(lang_begin_command,
-                                       "$$lang",
-                                       mainlang));
-               if (runparams.use_polyglossia
-                   && !bparams.language->polyglossiaOpts().empty())
-                       os << "["
-                           << from_ascii(bparams.language->polyglossiaOpts())
-                           << "]";
+               string bc = runparams.use_polyglossia ?
+                           getPolyglossiaBegin(lang_begin_command, mainlang,
+                                               bparams.language->polyglossiaOpts())
+                         : subst(lang_begin_command, "$$lang", mainlang);
+               os << bc;
                os << '\n';
        }
 
@@ -1190,7 +1223,7 @@ void latexParagraphs(Buffer const & buf,
                        prepareEnvironment(buf, text, par, os, runparams);
                // pit can be changed in TeXEnvironment.
                TeXEnvironment(buf, text, runparams, pit, os);
-               finishEnvironment(buf, text, pit + 1, os, runparams, data);
+               finishEnvironment(os, runparams, data);
        }
 
        if (pit == runparams.par_end) {
@@ -1212,7 +1245,7 @@ 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 language
+       // but only if the last par is in a babel or polyglossia language
        string const lang_end_command = runparams.use_polyglossia ?
                "\\end{$$lang}" : lyxrc.language_command_end;
        if (maintext && !lyxrc.language_auto_end && !mainlang.empty() &&
@@ -1221,20 +1254,30 @@ void latexParagraphs(Buffer const & buf,
                                        "$$lang",
                                        mainlang))
                        << '\n';
+               if (state->open_polyglossia_lang_ == mainlang)
+                       state->open_polyglossia_lang_ = "";
        }
 
        // If the last paragraph is an environment, we'll have to close
        // CJK at the very end to do proper nesting.
-       if (maintext && !is_child && open_encoding_ == CJK) {
+       if (maintext && !is_child && state->open_encoding_ == CJK) {
                os << "\\end{CJK}\n";
-               open_encoding_ = none;
+               state->open_encoding_ = none;
+       }
+       // Likewise for polyglossia
+       if (maintext && !is_child && state->open_polyglossia_lang_ != "") {
+               os << from_utf8(subst(lang_end_command,
+                                       "$$lang",
+                                       state->open_polyglossia_lang_))
+                  << '\n';
+               state->open_polyglossia_lang_ = "";
        }
 
        // reset inherited encoding
-       if (cjk_inherited_ > 0) {
-               cjk_inherited_ -= 1;
-               if (cjk_inherited_ == 0)
-                       open_encoding_ = CJK;
+       if (state->cjk_inherited_ > 0) {
+               state->cjk_inherited_ -= 1;
+               if (state->cjk_inherited_ == 0)
+                       state->open_encoding_ = CJK;
        }
 }
 
@@ -1243,6 +1286,13 @@ pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
                   OutputParams const & runparams, Encoding const & newEnc,
                   bool force)
 {
+       // XeTeX/LuaTeX use only one encoding per document:
+       // * 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())
+               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
@@ -1273,6 +1323,7 @@ pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
                return make_pair(true, 0);
 
        docstring const inputenc_arg(from_ascii(newEnc.latexName()));
+       OutputState * state = getOutputState();
        switch (newEnc.package()) {
                case Encoding::none:
                case Encoding::japanese:
@@ -1281,15 +1332,15 @@ pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
                case Encoding::inputenc: {
                        int count = inputenc_arg.length();
                        if (oldEnc.package() == Encoding::CJK &&
-                           open_encoding_ == CJK) {
+                           state->open_encoding_ == CJK) {
                                os << "\\end{CJK}";
-                               open_encoding_ = none;
+                               state->open_encoding_ = none;
                                count += 9;
                        }
                        else if (oldEnc.package() == Encoding::inputenc &&
-                                open_encoding_ == inputenc) {
+                                state->open_encoding_ == inputenc) {
                                os << "\\egroup";
-                               open_encoding_ = none;
+                               state->open_encoding_ = none;
                                count += 7;
                        }
                        if (runparams.local_font != 0
@@ -1299,7 +1350,7 @@ pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
                                // else CJK fails.
                                os << "\\bgroup";
                                count += 7;
-                               open_encoding_ = inputenc;
+                               state->open_encoding_ = inputenc;
                        }
                        // with the japanese option, inputenc is omitted.
                        if (runparams.use_japanese)
@@ -1310,18 +1361,18 @@ pair<bool, int> switchEncoding(odocstream & os, BufferParams const & bparams,
                case Encoding::CJK: {
                        int count = inputenc_arg.length();
                        if (oldEnc.package() == Encoding::CJK &&
-                           open_encoding_ == CJK) {
+                           state->open_encoding_ == CJK) {
                                os << "\\end{CJK}";
                                count += 9;
                        }
                        if (oldEnc.package() == Encoding::inputenc &&
-                           open_encoding_ == inputenc) {
+                           state->open_encoding_ == inputenc) {
                                os << "\\egroup";
                                count += 7;
                        }
                        os << "\\begin{CJK}{" << inputenc_arg << "}{"
                           << from_ascii(bparams.fonts_cjk) << "}";
-                       open_encoding_ = CJK;
+                       state->open_encoding_ = CJK;
                        return make_pair(true, count + 15);
                }
        }