]> git.lyx.org Git - lyx.git/blobdiff - src/Buffer.cpp
Fix text direction issue for InsetInfo in RTL context
[lyx.git] / src / Buffer.cpp
index 558c3514a15f2645c3fb05e3111cad047f8462f0..8ca74103a232a48705cd0814cdb14ab1dba8a768 100644 (file)
@@ -562,13 +562,13 @@ Buffer::~Buffer()
 }
 
 
-Buffer * Buffer::cloneFromMaster() const
+Buffer * Buffer::cloneWithChildren() const
 {
        BufferMap bufmap;
        cloned_buffers.push_back(new CloneList);
        CloneList * clones = cloned_buffers.back();
 
-       masterBuffer()->cloneWithChildren(bufmap, clones);
+       cloneWithChildren(bufmap, clones);
 
        // make sure we got cloned
        BufferMap::const_iterator bit = bufmap.find(this);
@@ -888,6 +888,7 @@ int Buffer::readHeader(Lexer & lex)
        params().options.erase();
        params().master.erase();
        params().float_placement.erase();
+       params().float_alignment.erase();
        params().paperwidth.erase();
        params().paperheight.erase();
        params().leftmargin.erase();
@@ -1040,6 +1041,10 @@ bool Buffer::readDocument(Lexer & lex)
                                                << absFileName()
                                                << ") does not include "
                                                "this document. Ignoring the master assignment.");
+                               // If the master has just been created, un-hide it (#11162)
+                               if (!master->fileName().exists())
+                                       lyx::dispatch(FuncRequest(LFUN_BUFFER_SWITCH,
+                                                                 master->absFileName()));
                        }
                }
        }
@@ -1075,8 +1080,7 @@ bool Buffer::importString(string const & format, docstring const & contents, Err
                return false;
        // It is important to use the correct extension here, since some
        // converters create a wrong output file otherwise (e.g. html2latex)
-       TempFile const tempfile("Buffer_importStringXXXXXX." + fmt->extension());
-       FileName const name(tempfile.name());
+       FileName const name = tempFileName("Buffer_importStringXXXXXX." + fmt->extension());
        ofdocstream os(name.toFilesystemEncoding().c_str());
        // Do not convert os implicitly to bool, since that is forbidden in C++11.
        bool const success = !(os << contents).fail();
@@ -1092,8 +1096,7 @@ bool Buffer::importString(string const & format, docstring const & contents, Err
                converted = importFile(format, name, errorList);
        }
 
-       if (name.exists())
-               name.removeFile();
+       removeTempFile(name);
        return converted;
 }
 
@@ -1103,10 +1106,14 @@ bool Buffer::importFile(string const & format, FileName const & name, ErrorList
        if (!theConverters().isReachable(format, "lyx"))
                return false;
 
-       TempFile const tempfile("Buffer_importFileXXXXXX.lyx");
-       FileName const lyx(tempfile.name());
-       if (theConverters().convert(0, name, lyx, name, format, "lyx", errorList))
-               return readFile(lyx) == ReadSuccess;
+       FileName const lyx = tempFileName("Buffer_importFileXXXXXX.lyx");
+       Converters::RetVal const retval =
+           theConverters().convert(0, name, lyx, name, format, "lyx", errorList);
+       if (retval == Converters::SUCCESS) {
+               bool const success = readFile(lyx) == ReadSuccess;
+               removeTempFile(lyx);
+               return success;
+       }
 
        return false;
 }
@@ -1327,14 +1334,37 @@ Buffer::ReadStatus Buffer::convertLyXFormat(FileName const & fn,
 
 
 FileName Buffer::getBackupName() const {
+       map<int, string> const file_formats = {
+         {544, "23"},
+         {508, "22"},
+         {474, "21"},
+         {413, "20"},
+         {345, "16"},
+         {276, "15"},
+         {245, "14"},
+         {221, "13"},
+         {220, "12"},
+         {218, "1163"},
+         {217, "116"},
+         {216, "115"},
+         {215, "11"},
+         {210, "010"},
+         {200, "006"}
+       };
        FileName const & fn = fileName();
        string const fname = fn.onlyFileNameWithoutExt();
        string const fext  = fn.extension() + "~";
        string const fpath = lyxrc.backupdir_path.empty() ?
                fn.onlyPath().absFileName() :
                lyxrc.backupdir_path;
-       string const fform = convert<string>(d->file_format);
-       string const backname = fname + "-lyxformat-" + fform;
+       string backup_suffix;
+       // If file format is from a stable series use version instead of file format
+       auto const it = file_formats.find(d->file_format);
+       if (it != file_formats.end())
+               backup_suffix = "-lyx" + it->second;
+       else
+               backup_suffix = "-lyxformat-" + convert<string>(d->file_format);
+       string const backname = fname + backup_suffix;
        FileName backup(addName(fpath, addExtension(backname, fext)));
 
        // limit recursion, just in case
@@ -1610,7 +1640,7 @@ bool Buffer::write(ostream & ofs) const
        // Important: Keep the version formatting in sync with lyx2lyx and
        //            tex2lyx (bug 7951)
        ofs << "#LyX " << lyx_version_major << "." << lyx_version_minor
-           << " created this file. For more info see http://www.lyx.org/\n"
+           << " created this file. For more info see https://www.lyx.org/\n"
            << "\\lyxformat " << LYX_FORMAT << "\n"
            << "\\begin_document\n";
 
@@ -1658,7 +1688,7 @@ bool Buffer::write(ostream & ofs) const
 }
 
 
-bool Buffer::makeLaTeXFile(FileName const & fname,
+Buffer::ExportStatus Buffer::makeLaTeXFile(FileName const & fname,
                           string const & original_path,
                           OutputParams const & runparams_in,
                           OutputWhat output) const
@@ -1682,14 +1712,14 @@ bool Buffer::makeLaTeXFile(FileName const & fname,
                Alert::error(_("Iconv software exception Detected"), bformat(_("Please "
                        "verify that the support software for your encoding (%1$s) is "
                        "properly installed"), from_ascii(encoding)));
-               return false;
+               return ExportError;
        }
        if (!openFileWrite(ofs, fname))
-               return false;
+               return ExportError;
 
        ErrorList & errorList = d->errorLists["Export"];
        errorList.clear();
-       bool failed_export = false;
+       ExportStatus status = ExportSuccess;
        otexstream os(ofs);
 
        // make sure we are ready to export
@@ -1699,32 +1729,45 @@ bool Buffer::makeLaTeXFile(FileName const & fname,
        updateBuffer();
        updateMacroInstances(OutputUpdate);
 
+       ExportStatus retval;
        try {
-               writeLaTeXSource(os, original_path, runparams, output);
+               retval = writeLaTeXSource(os, original_path, runparams, output);
+               if (retval == ExportKilled)
+                       return ExportKilled;
        }
        catch (EncodingException const & e) {
                docstring const failed(1, e.failed_char);
                ostringstream oss;
                oss << "0x" << hex << e.failed_char << dec;
-               docstring msg = bformat(_("Could not find LaTeX command for character '%1$s'"
-                                         " (code point %2$s)"),
-                                         failed, from_utf8(oss.str()));
-               errorList.push_back(ErrorItem(msg, _("Some characters of your document are probably not "
-                               "representable in the chosen encoding.\n"
-                               "Changing the document encoding to utf8 could help."),
-                                             {e.par_id, e.pos}, {e.par_id, e.pos + 1}));
-               failed_export = true;
+               if (getParFromID(e.par_id).paragraph().layout().pass_thru) {
+                       docstring msg = bformat(_("Uncodable character '%1$s'"
+                                                 " (code point %2$s)"),
+                                                 failed, from_utf8(oss.str()));
+                       errorList.push_back(ErrorItem(msg, _("Some characters of your document are not "
+                                       "representable in specific verbatim contexts.\n"
+                                       "Changing the document encoding to utf8 could help."),
+                                                     {e.par_id, e.pos}, {e.par_id, e.pos + 1}));
+               } else {
+                       docstring msg = bformat(_("Could not find LaTeX command for character '%1$s'"
+                                                 " (code point %2$s)"),
+                                                 failed, from_utf8(oss.str()));
+                       errorList.push_back(ErrorItem(msg, _("Some characters of your document are probably not "
+                                       "representable in the chosen encoding.\n"
+                                       "Changing the document encoding to utf8 could help."),
+                                                     {e.par_id, e.pos}, {e.par_id, e.pos + 1}));
+               }
+               status = ExportError;
        }
        catch (iconv_codecvt_facet_exception const & e) {
                errorList.push_back(ErrorItem(_("iconv conversion failed"),
                                              _(e.what())));
-               failed_export = true;
+               status = ExportError;
        }
        catch (exception const & e) {
                errorList.push_back(ErrorItem(_("conversion failed"),
                                              _(e.what())));
                lyxerr << e.what() << endl;
-               failed_export = true;
+               status = ExportError;
        }
        catch (...) {
                lyxerr << "Caught some really weird exception..." << endl;
@@ -1735,7 +1778,7 @@ bool Buffer::makeLaTeXFile(FileName const & fname,
 
        ofs.close();
        if (ofs.fail()) {
-               failed_export = true;
+               status = ExportError;
                lyxerr << "File '" << fname << "' was not closed properly." << endl;
        }
 
@@ -1743,11 +1786,11 @@ bool Buffer::makeLaTeXFile(FileName const & fname,
                errorList.clear();
        else
                errors("Export");
-       return !failed_export;
+       return status;
 }
 
 
-void Buffer::writeLaTeXSource(otexstream & os,
+Buffer::ExportStatus Buffer::writeLaTeXSource(otexstream & os,
                           string const & original_path,
                           OutputParams const & runparams_in,
                           OutputWhat output) const
@@ -1766,6 +1809,9 @@ void Buffer::writeLaTeXSource(otexstream & os,
        //        (or not reached) and characters encodable in the current
        //        encoding are not converted to ASCII-representation.
 
+       // Some macros rely on font encoding
+       runparams.main_fontenc = params().main_font_encoding();
+
        // If we are compiling a file standalone, even if this is the
        // child of some other buffer, let's cut the link here, so the
        // file is really independent and no concurring settings from
@@ -1794,7 +1840,7 @@ void Buffer::writeLaTeXSource(otexstream & os,
        // first paragraph of the document. (Asger)
        if (output_preamble && runparams.nice) {
                os << "%% LyX " << lyx_version << " created this file.  "
-                       "For more info, see http://www.lyx.org/.\n"
+                       "For more info, see https://www.lyx.org/.\n"
                        "%% Do not edit unless you really know what "
                        "you are doing.\n";
        }
@@ -1856,8 +1902,7 @@ void Buffer::writeLaTeXSource(otexstream & os,
                                            "file path name."),
                                          inputpath, uncodable_glyphs));
                        } else {
-                               string docdir =
-                                       latex_path(original_path);
+                               string docdir = os::latex_path(original_path);
                                if (contains(docdir, '#')) {
                                        docdir = subst(docdir, "#", "\\#");
                                        os << "\\catcode`\\#=11"
@@ -1868,9 +1913,20 @@ void Buffer::writeLaTeXSource(otexstream & os,
                                        os << "\\catcode`\\%=11"
                                              "\\def\\%{%}\\catcode`\\%=14\n";
                                }
+                               bool const detokenize = !isAscii(from_utf8(docdir));
+                               bool const quote = contains(docdir, ' ');
                                os << "\\makeatletter\n"
-                                  << "\\def\\input@path{{"
-                                  << docdir << "}}\n"
+                                  << "\\def\\input@path{{";
+                               if (detokenize)
+                                       os << "\\detokenize{";
+                               if (quote)
+                                       os << "\"";
+                               os << docdir;
+                               if (quote)
+                                       os << "\"";
+                               if (detokenize)
+                                       os << "}";
+                               os << "}}\n"
                                   << "\\makeatother\n";
                        }
                }
@@ -1941,7 +1997,7 @@ void Buffer::writeLaTeXSource(otexstream & os,
                        // Restore the parenthood if needed
                        if (!runparams.is_child)
                                d->ignore_parent = false;
-                       return;
+                       return ExportSuccess;
                }
 
                // make the body.
@@ -1964,7 +2020,10 @@ void Buffer::writeLaTeXSource(otexstream & os,
        LYXERR(Debug::INFO, "preamble finished, now the body.");
 
        // the real stuff
-       latexParagraphs(*this, text(), os, runparams);
+       try {
+               latexParagraphs(*this, text(), os, runparams);
+       }
+       catch (ConversionException const &) { return ExportKilled; }
 
        // Restore the parenthood if needed
        if (!runparams.is_child)
@@ -1983,10 +2042,11 @@ void Buffer::writeLaTeXSource(otexstream & os,
 
        LYXERR(Debug::INFO, "Finished making LaTeX file.");
        LYXERR(Debug::INFO, "Row count was " << os.texrow().rows() - 1 << '.');
+       return ExportSuccess;
 }
 
 
-void Buffer::makeDocBookFile(FileName const & fname,
+Buffer::ExportStatus Buffer::makeDocBookFile(FileName const & fname,
                              OutputParams const & runparams,
                              OutputWhat output) const
 {
@@ -1994,22 +2054,26 @@ void Buffer::makeDocBookFile(FileName const & fname,
 
        ofdocstream ofs;
        if (!openFileWrite(ofs, fname))
-               return;
+               return ExportError;
 
        // make sure we are ready to export
        // this needs to be done before we validate
        updateBuffer();
        updateMacroInstances(OutputUpdate);
 
-       writeDocBookSource(ofs, fname.absFileName(), runparams, output);
+       ExportStatus const retval =
+               writeDocBookSource(ofs, fname.absFileName(), runparams, output);
+       if (retval == ExportKilled)
+               return ExportKilled;
 
        ofs.close();
        if (ofs.fail())
                lyxerr << "File '" << fname << "' was not closed properly." << endl;
+       return ExportSuccess;
 }
 
 
-void Buffer::writeDocBookSource(odocstream & os, string const & fname,
+Buffer::ExportStatus Buffer::writeDocBookSource(odocstream & os, string const & fname,
                             OutputParams const & runparams,
                             OutputWhat output) const
 {
@@ -2038,7 +2102,7 @@ void Buffer::writeDocBookSource(odocstream & os, string const & fname,
                        os << from_ascii(tclass.class_header());
                else if (runparams.flavor == OutputParams::XML)
                        os << "PUBLIC \"-//OASIS//DTD DocBook XML V4.2//EN\" "
-                           << "\"http://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd\"";
+                           << "\"https://www.oasis-open.org/docbook/xml/4.2/docbookx.dtd\"";
                else
                        os << " PUBLIC \"-//OASIS//DTD DocBook V4.2//EN\"";
 
@@ -2077,41 +2141,48 @@ void Buffer::writeDocBookSource(odocstream & os, string const & fname,
 
                os << "<!-- " << ((runparams.flavor == OutputParams::XML)? "XML" : "SGML")
                                << " file was created by LyX " << lyx_version
-                               << "\n  See http://www.lyx.org/ for more information -->\n";
+                               << "\n  See https://www.lyx.org/ for more information -->\n";
 
                params().documentClass().counters().reset();
 
                sgml::openTag(os, top);
                os << '\n';
-               docbookParagraphs(text(), *this, os, runparams);
+               try {
+                       docbookParagraphs(text(), *this, os, runparams);
+               }
+               catch (ConversionException const &) { return ExportKilled; }
                sgml::closeTag(os, top_element);
        }
+       return ExportSuccess;
 }
 
 
-void Buffer::makeLyXHTMLFile(FileName const & fname,
+Buffer::ExportStatus Buffer::makeLyXHTMLFile(FileName const & fname,
                              OutputParams const & runparams) const
 {
        LYXERR(Debug::LATEX, "makeLyXHTMLFile...");
 
        ofdocstream ofs;
        if (!openFileWrite(ofs, fname))
-               return;
+               return ExportError;
 
        // make sure we are ready to export
        // this has to be done before we validate
        updateBuffer(UpdateMaster, OutputUpdate);
        updateMacroInstances(OutputUpdate);
 
-       writeLyXHTMLSource(ofs, runparams, FullSource);
+       ExportStatus const retval = writeLyXHTMLSource(ofs, runparams, FullSource);
+       if (retval == ExportKilled)
+               return retval;
 
        ofs.close();
        if (ofs.fail())
                lyxerr << "File '" << fname << "' was not closed properly." << endl;
+       return retval;
 }
 
 
-void Buffer::writeLyXHTMLSource(odocstream & os,
+Buffer::ExportStatus Buffer::writeLyXHTMLSource(odocstream & os,
                             OutputParams const & runparams,
                             OutputWhat output) const
 {
@@ -2212,13 +2283,18 @@ void Buffer::writeLyXHTMLSource(odocstream & os,
                if (output != IncludedFile)
                        // if we're an included file, the counters are in the master.
                        params().documentClass().counters().reset();
-               xhtmlParagraphs(text(), *this, xs, runparams);
+               try {
+                       xhtmlParagraphs(text(), *this, xs, runparams);
+               }
+               catch (ConversionException const &) { return ExportKilled; }
                if (output_body_tag)
                        os << "</body>\n";
        }
 
        if (output_preamble)
                os << "</html>\n";
+
+       return ExportSuccess;
 }
 
 
@@ -2241,7 +2317,12 @@ int Buffer::runChktex()
        runparams.flavor = OutputParams::LATEX;
        runparams.nice = false;
        runparams.linelen = lyxrc.plaintext_linelen;
-       makeLaTeXFile(FileName(name), org_path, runparams);
+       ExportStatus const retval =
+               makeLaTeXFile(FileName(name), org_path, runparams);
+       if (retval != ExportSuccess) {
+               // error code on failure
+               return -1;
+       }
 
        TeXErrors terr;
        Chktex chktex(lyxrc.chktex_command, onlyFileName(name), filePath());
@@ -2333,15 +2414,25 @@ BiblioInfo const & Buffer::masterBibInfo() const
 }
 
 
-void Buffer::registerBibfiles(FileNamePairList const & bf) const {
+BiblioInfo const & Buffer::bibInfo() const
+{
+       return d->bibinfo_;
+}
+
+
+void Buffer::registerBibfiles(FileNamePairList const & bf) const
+{
+       // We register the bib files in the master buffer,
+       // if there is one, but also in every single buffer,
+       // in case a child is compiled alone.
        Buffer const * const tmp = masterBuffer();
        if (tmp != this)
-               return tmp->registerBibfiles(bf);
+               tmp->registerBibfiles(bf);
 
        for (auto const & p : bf) {
-               FileNamePairList::const_iterator tmp =
+               FileNamePairList::const_iterator temp =
                        find(d->bibfiles_cache_.begin(), d->bibfiles_cache_.end(), p);
-               if (tmp == d->bibfiles_cache_.end())
+               if (temp == d->bibfiles_cache_.end())
                        d->bibfiles_cache_.push_back(p);
        }
 }
@@ -2378,17 +2469,17 @@ void Buffer::checkIfBibInfoCacheIsValid() const
 }
 
 
-void Buffer::reloadBibInfoCache() const
+void Buffer::reloadBibInfoCache(bool const force) const
 {
        // use the master's cache
        Buffer const * const tmp = masterBuffer();
        if (tmp != this) {
-               tmp->reloadBibInfoCache();
+               tmp->reloadBibInfoCache(force);
                return;
        }
 
        checkIfBibInfoCacheIsValid();
-       if (d->bibinfo_cache_valid_)
+       if (d->bibinfo_cache_valid_ && !force)
                return;
 
        d->bibinfo_.clear();
@@ -2405,21 +2496,33 @@ void Buffer::collectBibKeys(FileNameList & checkedFiles) const
 }
 
 
-void Buffer::addBiblioInfo(BiblioInfo const & bi) const
+void Buffer::addBiblioInfo(BiblioInfo const & bin) const
 {
-       Buffer const * tmp = masterBuffer();
-       BiblioInfo & masterbi = (tmp == this) ?
-               d->bibinfo_ : tmp->d->bibinfo_;
-       masterbi.mergeBiblioInfo(bi);
+       // We add the biblio info to the master buffer,
+       // if there is one, but also to every single buffer,
+       // in case a child is compiled alone.
+       BiblioInfo & bi = d->bibinfo_;
+       bi.mergeBiblioInfo(bin);
+
+       if (parent() != 0) {
+               BiblioInfo & masterbi = parent()->d->bibinfo_;
+               masterbi.mergeBiblioInfo(bin);
+       }
 }
 
 
-void Buffer::addBibTeXInfo(docstring const & key, BibTeXInfo const & bi) const
+void Buffer::addBibTeXInfo(docstring const & key, BibTeXInfo const & bin) const
 {
-       Buffer const * tmp = masterBuffer();
-       BiblioInfo & masterbi = (tmp == this) ?
-               d->bibinfo_ : tmp->d->bibinfo_;
-       masterbi[key] = bi;
+       // We add the bibtex info to the master buffer,
+       // if there is one, but also to every single buffer,
+       // in case a child is compiled alone.
+       BiblioInfo & bi = d->bibinfo_;
+       bi[key] = bin;
+
+       if (parent() != 0) {
+               BiblioInfo & masterbi = parent()->d->bibinfo_;
+               masterbi[key] = bin;
+       }
 }
 
 
@@ -2430,6 +2533,11 @@ void Buffer::makeCitationLabels() const
 }
 
 
+void Buffer::invalidateCiteLabels() const
+{
+       masterBuffer()->d->cite_labels_valid_ = false;
+}
+
 bool Buffer::citeLabelsValid() const
 {
        return masterBuffer()->d->cite_labels_valid_;
@@ -2513,10 +2621,6 @@ bool Buffer::getStatus(FuncRequest const & cmd, FuncStatus & flag)
                break;
        }
 
-       case LFUN_BUFFER_CHKTEX:
-               enable = params().isLatex() && !lyxrc.chktex_command.empty();
-               break;
-
        case LFUN_BUILD_PROGRAM:
                enable = params().isExportable("program", false);
                break;
@@ -2558,15 +2662,16 @@ bool Buffer::getStatus(FuncRequest const & cmd, FuncStatus & flag)
                flag.setOnOff(params().output_changes);
                break;
 
-       case LFUN_BUFFER_TOGGLE_COMPRESSION: {
+       case LFUN_BUFFER_TOGGLE_COMPRESSION:
                flag.setOnOff(params().compressed);
                break;
-       }
 
-       case LFUN_BUFFER_TOGGLE_OUTPUT_SYNC: {
+       case LFUN_BUFFER_TOGGLE_OUTPUT_SYNC:
                flag.setOnOff(params().output_sync);
                break;
-       }
+
+       case LFUN_BUFFER_ANONYMIZE:
+               break;
 
        default:
                return false;
@@ -2596,7 +2701,8 @@ void Buffer::dispatch(FuncRequest const & func, DispatchResult & dr)
        string const argument = to_utf8(func.argument());
        // We'll set this back to false if need be.
        bool dispatched = true;
-       undo().beginUndoGroup();
+       // This handles undo groups automagically
+       UndoGroupHelper ugh(this);
 
        switch (func.action()) {
        case LFUN_BUFFER_TOGGLE_READ_ONLY:
@@ -2628,10 +2734,6 @@ void Buffer::dispatch(FuncRequest const & func, DispatchResult & dr)
                break;
        }
 
-       case LFUN_BUFFER_CHKTEX:
-               runChktex();
-               break;
-
        case LFUN_BUFFER_EXPORT_CUSTOM: {
                string format_name;
                string command = split(argument, format_name, ' ');
@@ -2721,14 +2823,14 @@ void Buffer::dispatch(FuncRequest const & func, DispatchResult & dr)
        }
 
        case LFUN_BRANCH_ADD: {
-               docstring branch_name = func.argument();
-               if (branch_name.empty()) {
+               docstring branchnames = func.argument();
+               if (branchnames.empty()) {
                        dispatched = false;
                        break;
                }
                BranchList & branch_list = params().branchlist();
                vector<docstring> const branches =
-                       getVectorFromString(branch_name, branch_list.separator());
+                       getVectorFromString(branchnames, branch_list.separator());
                docstring msg;
                for (docstring const & branch_name : branches) {
                        Branch * branch = branch_list.find(branch_name);
@@ -2841,12 +2943,20 @@ void Buffer::dispatch(FuncRequest const & func, DispatchResult & dr)
                params().output_sync = !params().output_sync;
                break;
 
+       case LFUN_BUFFER_ANONYMIZE: {
+               undo().recordUndoFullBuffer(CursorData());
+               CursorData cur(doc_iterator_begin(this));
+               for ( ; cur ; cur.forwardPar())
+                       cur.paragraph().anonymize();
+               dr.forceBufferUpdate();
+               break;
+       }
+
        default:
                dispatched = false;
                break;
        }
        dr.dispatched(dispatched);
-       undo().endUndoGroup();
 }
 
 
@@ -2874,24 +2984,24 @@ bool Buffer::isMultiLingual() const
 
 std::set<Language const *> Buffer::getLanguages() const
 {
-       std::set<Language const *> languages;
-       getLanguages(languages);
-       return languages;
+       std::set<Language const *> langs;
+       getLanguages(langs);
+       return langs;
 }
 
 
-void Buffer::getLanguages(std::set<Language const *> & languages) const
+void Buffer::getLanguages(std::set<Language const *> & langs) const
 {
        ParConstIterator end = par_iterator_end();
        // add the buffer language, even if it's not actively used
-       languages.insert(language());
+       langs.insert(language());
        // iterate over the paragraphs
        for (ParConstIterator it = par_iterator_begin(); it != end; ++it)
-               it->getLanguages(languages);
+               it->getLanguages(langs);
        // also children
        ListOfBuffers clist = getDescendents();
        for (auto const & cit : clist)
-               cit->getLanguages(languages);
+               cit->getLanguages(langs);
 }
 
 
@@ -3112,9 +3222,28 @@ vector<docstring> const Buffer::prepareBibFilePaths(OutputParams const & runpara
                string utf8input = to_utf8(bit.first);
                string database =
                        prepareFileNameForLaTeX(utf8input, ".bib", runparams.nice);
-               FileName const try_in_file =
+               FileName try_in_file =
                        makeAbsPath(database + ".bib", filePath());
-               bool const not_from_texmf = try_in_file.isReadableFile();
+               bool not_from_texmf = try_in_file.isReadableFile();
+               // If the file has not been found, try with the real file name
+               // (it might come from a child in a sub-directory)
+               if (!not_from_texmf) {
+                       try_in_file = bit.second;
+                       if (try_in_file.isReadableFile()) {
+                               // Check if the file is in texmf
+                               FileName kpsefile(findtexfile(changeExtension(utf8input, "bib"), "bib", true));
+                               not_from_texmf = kpsefile.empty()
+                                               || kpsefile.absFileName() != try_in_file.absFileName();
+                               if (not_from_texmf)
+                                       // If this exists, make path relative to the master
+                                       // FIXME Unicode
+                                       database =
+                                               removeExtension(prepareFileNameForLaTeX(
+                                                                                       to_utf8(makeRelPath(from_utf8(try_in_file.absFileName()),
+                                                                                                                               from_utf8(filePath()))),
+                                                                                       ".bib", runparams.nice));
+                       }
+               }
 
                if (!runparams.inComment && !runparams.dryrun && !runparams.nice &&
                    not_from_texmf) {
@@ -3505,10 +3634,10 @@ void Buffer::Impl::updateMacros(DocIterator & it, DocIterator & scope)
                        // is it an external file?
                        if (insit.inset->lyxCode() == INCLUDE_CODE) {
                                // get buffer of external file
-                               InsetInclude const & inset =
+                               InsetInclude const & incinset =
                                        static_cast<InsetInclude const &>(*insit.inset);
                                macro_lock = true;
-                               Buffer * child = inset.getChildBuffer();
+                               Buffer * child = incinset.getChildBuffer();
                                macro_lock = false;
                                if (!child)
                                        continue;
@@ -3779,6 +3908,9 @@ unique_ptr<TexRow> Buffer::getSourceCode(odocstream & os, string const & format,
        // No side effect of file copying and image conversion
        runparams.dryrun = true;
 
+       // Some macros rely on font encoding
+       runparams.main_fontenc = params().main_font_encoding();
+
        if (output == CurrentParagraph) {
                runparams.par_begin = par_begin;
                runparams.par_end = par_end;
@@ -4210,6 +4342,7 @@ Buffer::ExportStatus Buffer::doExport(string const & target, bool put_in_tempdir
                        return ExportNoPathToFormat;
                }
                runparams.flavor = converters.getFlavor(path, this);
+               runparams.hyperref_driver = converters.getHyperrefDriver(path);
                for (auto const & edge : path)
                        if (theConverters().get(edge).nice()) {
                                need_nice_file = true;
@@ -4239,40 +4372,53 @@ Buffer::ExportStatus Buffer::doExport(string const & target, bool put_in_tempdir
        // Plain text backend
        if (backend_format == "text") {
                runparams.flavor = OutputParams::TEXT;
-               writePlaintextFile(*this, FileName(filename), runparams);
+               try {
+                       writePlaintextFile(*this, FileName(filename), runparams);
+               }
+               catch (ConversionException const &) { return ExportCancel; }
        }
        // HTML backend
        else if (backend_format == "xhtml") {
                runparams.flavor = OutputParams::HTML;
                setMathFlavor(runparams);
-               makeLyXHTMLFile(FileName(filename), runparams);
+               if (makeLyXHTMLFile(FileName(filename), runparams) == ExportKilled)
+                       return ExportKilled;
        } else if (backend_format == "lyx")
                writeFile(FileName(filename));
        // Docbook backend
        else if (params().isDocBook()) {
                runparams.nice = !put_in_tempdir;
-               makeDocBookFile(FileName(filename), runparams);
+               if (makeDocBookFile(FileName(filename), runparams) == ExportKilled)
+                       return ExportKilled;
        }
        // LaTeX backend
        else if (backend_format == format || need_nice_file) {
                runparams.nice = true;
-               bool const success = makeLaTeXFile(FileName(filename), string(), runparams);
+               ExportStatus const retval =
+                       makeLaTeXFile(FileName(filename), string(), runparams);
+               if (retval == ExportKilled)
+                       return ExportKilled;
                if (d->cloned_buffer_)
                        d->cloned_buffer_->d->errorLists["Export"] = d->errorLists["Export"];
-               if (!success)
-                       return ExportError;
+               if (retval != ExportSuccess)
+                       return retval;
        } else if (!lyxrc.tex_allows_spaces
                   && contains(filePath(), ' ')) {
                Alert::error(_("File name error"),
-                          _("The directory path to the document cannot contain spaces."));
+                       bformat(_("The directory path to the document\n%1$s\n"
+                           "contains spaces, but your TeX installation does "
+                           "not allow them. You should save the file to a directory "
+                                       "whose name does not contain spaces."), from_ascii(filePath())));
                return ExportTexPathHasSpaces;
        } else {
                runparams.nice = false;
-               bool const success = makeLaTeXFile(
-                       FileName(filename), filePath(), runparams);
+               ExportStatus const retval =
+                       makeLaTeXFile(FileName(filename), filePath(), runparams);
+               if (retval == ExportKilled)
+                       return ExportKilled;
                if (d->cloned_buffer_)
                        d->cloned_buffer_->d->errorLists["Export"] = d->errorLists["Export"];
-               if (!success)
+               if (retval != ExportSuccess)
                        return ExportError;
        }
 
@@ -4281,9 +4427,12 @@ Buffer::ExportStatus Buffer::doExport(string const & target, bool put_in_tempdir
        ErrorList & error_list = d->errorLists[error_type];
        string const ext = theFormats().extension(format);
        FileName const tmp_result_file(changeExtension(filename, ext));
-       bool const success = converters.convert(this, FileName(filename),
-               tmp_result_file, FileName(absFileName()), backend_format, format,
-               error_list);
+       Converters::RetVal const retval = 
+               converters.convert(this, FileName(filename), tmp_result_file, 
+               FileName(absFileName()), backend_format, format, error_list);
+       if (retval == Converters::KILLED)
+               return ExportCancel;
+       bool success = (retval == Converters::SUCCESS);
 
        // Emit the signal to show the error list or copy it back to the
        // cloned Buffer so that it can be emitted afterwards.
@@ -4318,8 +4467,8 @@ Buffer::ExportStatus Buffer::doExport(string const & target, bool put_in_tempdir
                // FIXME: There is a possibility of concurrent access to texrow
                // here from the main GUI thread that should be securized.
                d->cloned_buffer_->d->texrow = d->texrow;
-               string const error_type = params().bufferFormat();
-               d->cloned_buffer_->d->errorLists[error_type] = d->errorLists[error_type];
+               string const err_type = params().bufferFormat();
+               d->cloned_buffer_->d->errorLists[error_type] = d->errorLists[err_type];
        }
 
 
@@ -4622,8 +4771,9 @@ void Buffer::updateBuffer(UpdateScope scope, UpdateType utype) const
        DocumentClass const & textclass = master->params().documentClass();
 
        FileNamePairList old_bibfiles;
-       // do this only if we are the top-level Buffer
-       if (master == this) {
+       // Do this only if we are the top-level Buffer. We also need to account
+       // for the case of a previewed child with ignored parent here.
+       if (master == this && !d->ignore_parent) {
                textclass.counters().reset(from_ascii("bibitem"));
                reloadBibInfoCache();
                // we will re-read this cache as we go through, but we need
@@ -4646,7 +4796,7 @@ void Buffer::updateBuffer(UpdateScope scope, UpdateType utype) const
                        // not updated during the updateBuffer call and TocModel::toc_ is invalid
                        // (bug 5699). The same happens if the master buffer is open in a different
                        // window. This test catches both possibilities.
-                       // See: http://marc.info/?l=lyx-devel&m=138590578911716&w=2
+                       // See: https://marc.info/?l=lyx-devel&m=138590578911716&w=2
                        // There remains a problem here: If there is another child open in yet a third
                        // window, that TOC is not updated. So some more general solution is needed at
                        // some point.
@@ -4684,9 +4834,13 @@ void Buffer::updateBuffer(UpdateScope scope, UpdateType utype) const
                return;
 
        // if the bibfiles changed, the cache of bibinfo is invalid
-       sort(d->bibfiles_cache_.begin(), d->bibfiles_cache_.end());
-       // the old one should already be sorted
-       if (old_bibfiles != d->bibfiles_cache_) {
+       FileNamePairList new_bibfiles = d->bibfiles_cache_;
+       // this is a trick to determine whether the two vectors have
+       // the same elements.
+       sort(new_bibfiles.begin(), new_bibfiles.end());
+       sort(old_bibfiles.begin(), old_bibfiles.end());
+       if (old_bibfiles != new_bibfiles) {
+               LYXERR(Debug::FILES, "Reloading bibinfo cache.");
                invalidateBibinfoCache();
                reloadBibInfoCache();
                // We relied upon the bibinfo cache when recalculating labels. But that
@@ -4696,10 +4850,21 @@ void Buffer::updateBuffer(UpdateScope scope, UpdateType utype) const
                // labels. Nothing else will have changed. So we could create a new 
                // UpdateType that would signal that fact, if we needed to do so.
                parit = cbuf.par_iterator_begin();
+               // we will be re-doing the counters and references and such.
+               textclass.counters().reset();
+               clearReferenceCache();
+               // we should not need to do this again?
+               // updateMacros();
+               setChangesPresent(false);
                updateBuffer(parit, utype);
+               // this will already have been done by reloadBibInfoCache();
+               // d->bibinfo_cache_valid_ = true;
        }
-       else
+       else {
+               LYXERR(Debug::FILES, "Bibfiles unchanged.");
+               // this is also set to true on the other path, by reloadBibInfoCache.
                d->bibinfo_cache_valid_ = true;
+       }
        d->cite_labels_valid_ = true;
        /// FIXME: Perf
        cbuf.tocBackend().update(true, utype);
@@ -5087,7 +5252,7 @@ int Buffer::charCount(bool with_blanks) const
 Buffer::ReadStatus Buffer::reload()
 {
        setBusy(true);
-       // c.f. bug http://www.lyx.org/trac/ticket/6587
+       // c.f. bug https://www.lyx.org/trac/ticket/6587
        removeAutosaveFile();
        // e.g., read-only status could have changed due to version control
        d->filename.refresh();
@@ -5276,7 +5441,6 @@ void Buffer::Impl::fileExternallyModified(bool const exists)
                       "checksum unchanged: " << filename);
                return;
        }
-       lyx_clean = bak_clean = false;
        // If the file has been deleted, only mark the file as dirty since it is
        // pointless to prompt for reloading. If later a file is moved into this
        // location, then the externally modified warning will appear then.