]> git.lyx.org Git - lyx.git/blobdiff - src/LaTeXFeatures.cpp
Add FontSizeFormat textclass option
[lyx.git] / src / LaTeXFeatures.cpp
index 78c3e5a5e8f0ef55edec531956d93fb13a4349b0..4abb586f22bc32c37df5489f1353717672e88a6e 100644 (file)
@@ -63,12 +63,7 @@ namespace lyx {
 //\message{LyX LaTeX Extensions (LLE v0.2) of 11-Jan-1996.}
 
 static docstring const lyx_def = from_ascii(
-       "\\providecommand{\\LyX}{L\\kern-.1667em\\lower.25em\\hbox{Y}\\kern-.125emX\\@}");
-
-static docstring const lyx_hyperref_def = from_ascii(
-       "\\providecommand{\\LyX}{\\texorpdfstring%\n"
-       "  {L\\kern-.1667em\\lower.25em\\hbox{Y}\\kern-.125emX\\@}\n"
-       "  {LyX}}");
+       "{%\n  L\\kern-.1667em\\lower.25em\\hbox{Y}\\kern-.125emX\\@}");
 
 static docstring const noun_def = from_ascii(
        "\\newcommand{\\noun}[1]{\\textsc{#1}}");
@@ -258,7 +253,7 @@ static docstring const textcyr_T2A_def = from_ascii(
 static docstring const textcyr_def = from_ascii(
        "\\DeclareRobustCommand{\\cyrtext}{%\n"
        "  \\fontencoding{T2A}\\selectfont\\def\\encodingdefault{T2A}}\n"
-       "\\DeclareRobustCommand{\\textcyr}[1]{\\leavevmode{\\cyrtext #1}}\n");
+       "\\DeclareRobustCommand{\\textcyrillic}[1]{\\leavevmode{\\cyrtext #1}}\n");
 
 static docstring const lyxmathsym_def = from_ascii(
        "\\newcommand{\\lyxmathsym}[1]{\\ifmmode\\begingroup\\def\\b@ld{bold}\n"
@@ -320,67 +315,75 @@ static docstring const ogonek_def = from_ascii(
 
 static docstring const lyxaccent_def = from_ascii(
        "%% custom text accent \\LyxTextAccent[<rise value (length)>]{<accent>}{<base>}\n"
-        "\\newcommand*{\\LyxTextAccent}[3][0ex]{%\n"
-        "  \\hmode@bgroup\\ooalign{\\null#3\\crcr\\hidewidth\n"
-        "  \\raise#1\\hbox{#2}\\hidewidth}\\egroup}\n"
-        "%% select a font size smaller than the current font size:\n"
-        "\\newcommand{\\LyxAccentSize}[1][\\sf@size]{%\n"
-        "  \\check@mathfonts\\fontsize#1\\z@\\math@fontsfalse\\selectfont\n"
-        "}\n");
+       "\\newcommand*{\\LyxTextAccent}[3][0ex]{%\n"
+       "  \\hmode@bgroup\\ooalign{\\null#3\\crcr\\hidewidth\n"
+       "  \\raise#1\\hbox{#2}\\hidewidth}\\egroup}\n"
+       "%% select a font size smaller than the current font size:\n"
+       "\\newcommand{\\LyxAccentSize}[1][\\sf@size]{%\n"
+       "  \\check@mathfonts\\fontsize#1\\z@\\math@fontsfalse\\selectfont\n"
+       "}\n");
 
 static docstring const textcommabelow_def = from_ascii(
-        "\\ProvideTextCommandDefault{\\textcommabelow}[1]{%%\n"
-        "  \\LyxTextAccent[-.31ex]{\\LyxAccentSize,}{#1}}\n");
+       "\\ProvideTextCommandDefault{\\textcommabelow}[1]{%%\n"
+       "  \\LyxTextAccent[-.31ex]{\\LyxAccentSize,}{#1}}\n");
 
 static docstring const textcommaabove_def = from_ascii(
-        "\\ProvideTextCommandDefault{\\textcommaabove}[1]{%%\n"
-        "  \\LyxTextAccent[.5ex]{\\LyxAccentSize`}{#1}}\n");
+       "\\ProvideTextCommandDefault{\\textcommaabove}[1]{%%\n"
+       "  \\LyxTextAccent[.5ex]{\\LyxAccentSize`}{#1}}\n");
 
 static docstring const textcommaaboveright_def = from_ascii(
-        "\\ProvideTextCommandDefault{\\textcommaaboveright}[1]{%%\n"
-        "  \\LyxTextAccent[.5ex]{\\LyxAccentSize\\ '}{#1}}\n");
+       "\\ProvideTextCommandDefault{\\textcommaaboveright}[1]{%%\n"
+       "  \\LyxTextAccent[.5ex]{\\LyxAccentSize\\ '}{#1}}\n");
 
 // Baltic languages use a comma-accent instead of a cedilla
 static docstring const textbaltic_def = from_ascii(
-        "%% use comma accent instead of cedilla for these characters:\n"
-        "\\DeclareTextCompositeCommand{\\c}{T1}{g}{\\textcommaabove{g}}\n"
-        "\\DeclareTextCompositeCommand{\\c}{T1}{G}{\\textcommabelow{G}}\n"
-        "\\DeclareTextCompositeCommand{\\c}{T1}{k}{\\textcommabelow{k}}\n"
-        "\\DeclareTextCompositeCommand{\\c}{T1}{K}{\\textcommabelow{K}}\n"
-        "\\DeclareTextCompositeCommand{\\c}{T1}{l}{\\textcommabelow{l}}\n"
-        "\\DeclareTextCompositeCommand{\\c}{T1}{L}{\\textcommabelow{L}}\n"
-        "\\DeclareTextCompositeCommand{\\c}{T1}{n}{\\textcommabelow{n}}\n"
-        "\\DeclareTextCompositeCommand{\\c}{T1}{N}{\\textcommabelow{N}}\n"
-        "\\DeclareTextCompositeCommand{\\c}{T1}{r}{\\textcommabelow{r}}\n"
-        "\\DeclareTextCompositeCommand{\\c}{T1}{R}{\\textcommabelow{R}}\n");
+       "%% use comma accent instead of cedilla for these characters:\n"
+       "\\DeclareTextCompositeCommand{\\c}{T1}{g}{\\textcommaabove{g}}\n"
+       "\\DeclareTextCompositeCommand{\\c}{T1}{G}{\\textcommabelow{G}}\n"
+       "\\DeclareTextCompositeCommand{\\c}{T1}{k}{\\textcommabelow{k}}\n"
+       "\\DeclareTextCompositeCommand{\\c}{T1}{K}{\\textcommabelow{K}}\n"
+       "\\DeclareTextCompositeCommand{\\c}{T1}{l}{\\textcommabelow{l}}\n"
+       "\\DeclareTextCompositeCommand{\\c}{T1}{L}{\\textcommabelow{L}}\n"
+       "\\DeclareTextCompositeCommand{\\c}{T1}{n}{\\textcommabelow{n}}\n"
+       "\\DeclareTextCompositeCommand{\\c}{T1}{N}{\\textcommabelow{N}}\n"
+       "\\DeclareTextCompositeCommand{\\c}{T1}{r}{\\textcommabelow{r}}\n"
+       "\\DeclareTextCompositeCommand{\\c}{T1}{R}{\\textcommabelow{R}}\n");
+
+// Use cyrillic fonts to provide letter schwa in text (see #11062)
+static docstring const textschwa_def = from_ascii(
+       "%% letter schwa missing in Latin fonts, use Cyrillic schwa\n"
+       "\\DeclareTextSymbolDefault{\\CYRSCHWA}{T2A}\n"
+       "\\DeclareTextSymbolDefault{\\cyrschwa}{T2A}\n"
+       "\\ProvideTextCommandDefault{\\textSchwa}{\\CYRSCHWA}\n"
+       "\\ProvideTextCommandDefault{\\textschwa}{\\cyrschwa}\n");
 
 // split-level fractions
 static docstring const xfrac_def = from_ascii(
           "\\usepackage{xfrac}\n");
 static docstring const smallLetterFrac_def = from_ascii(
-        "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{default}{text}\n"
-               "  {phantom=c, scale-factor=1.0, slash-left-kern=-.05em}\n"
-               "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{lmr}{text}\n"
-               "  {slash-symbol-font=ptm, phantom=c, scale-factor=1, slash-left-kern=-.05em}\n"
-               "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{lmss}{text}\n"
-               "  {slash-symbol-font=ptm, phantom=c, scale-factor=1, slash-left-kern=-.05em}\n"
-               "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{cmr}{text}\n"
-               "  {slash-symbol-font=ptm, phantom=c, scale-factor=1, slash-left-kern=-.05em}\n"
-               "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{cmss}{text}\n"
-               "  {slash-symbol-font=ptm, phantom=c, scale-factor=1, slash-left-kern=-.05em}\n"
-               "\\newcommand{\\smallLetterFrac}[2]{%\n"
-               "  {\\UseCollection{xfrac}{smallLetterFrac}\\sfrac{#1}{#2}}}\n");
+       "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{default}{text}\n"
+       "  {phantom=c, scale-factor=1.0, slash-left-kern=-.05em}\n"
+       "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{lmr}{text}\n"
+       "  {slash-symbol-font=ptm, phantom=c, scale-factor=1, slash-left-kern=-.05em}\n"
+       "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{lmss}{text}\n"
+       "  {slash-symbol-font=ptm, phantom=c, scale-factor=1, slash-left-kern=-.05em}\n"
+       "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{cmr}{text}\n"
+       "  {slash-symbol-font=ptm, phantom=c, scale-factor=1, slash-left-kern=-.05em}\n"
+       "\\DeclareCollectionInstance{smallLetterFrac}{xfrac}{cmss}{text}\n"
+       "  {slash-symbol-font=ptm, phantom=c, scale-factor=1, slash-left-kern=-.05em}\n"
+       "\\newcommand{\\smallLetterFrac}[2]{%\n"
+       "  {\\UseCollection{xfrac}{smallLetterFrac}\\sfrac{#1}{#2}}}\n");
 
 static docstring const lyxref_def = from_ascii(
-               "\\RS@ifundefined{subsecref}\n"
-               "  {\\newref{subsec}{name = \\RSsectxt}}\n"
-               "  {}\n"
-               "\\RS@ifundefined{thmref}\n"
-               "  {\\def\\RSthmtxt{theorem~}\\newref{thm}{name = \\RSthmtxt}}\n"
-               "  {}\n"
-               "\\RS@ifundefined{lemref}\n"
-               "  {\\def\\RSlemtxt{lemma~}\\newref{lem}{name = \\RSlemtxt}}\n"
-               "  {}\n");
+       "\\RS@ifundefined{subsecref}\n"
+       "  {\\newref{subsec}{name = \\RSsectxt}}\n"
+       "  {}\n"
+       "\\RS@ifundefined{thmref}\n"
+       "  {\\def\\RSthmtxt{theorem~}\\newref{thm}{name = \\RSthmtxt}}\n"
+       "  {}\n"
+       "\\RS@ifundefined{lemref}\n"
+       "  {\\def\\RSlemtxt{lemma~}\\newref{lem}{name = \\RSlemtxt}}\n"
+       "  {}\n");
 
 // Make sure the columns are also outputed as rtl
 static docstring const rtloutputdblcol_def = from_ascii(
@@ -459,7 +462,7 @@ static docstring const lyxstrikeout_style = from_ascii(
 
 
 LaTeXFeatures::LaTeXFeatures(Buffer const & b, BufferParams const & p,
-                            OutputParams const & r)
+                                                        OutputParams const & r)
        : buffer_(&b), params_(p), runparams_(r), in_float_(false),
          in_deleted_inset_(false)
 {}
@@ -544,6 +547,12 @@ void LaTeXFeatures::require(set<string> const & names)
 }
 
 
+void LaTeXFeatures::provide(string const & name)
+{
+       provides_.insert(name);
+}
+
+
 void LaTeXFeatures::useLayout(docstring const & layoutname)
 {
        useLayout(layoutname, 0);
@@ -609,6 +618,11 @@ bool LaTeXFeatures::isRequired(string const & name) const
 
 bool LaTeXFeatures::isProvided(string const & name) const
 {
+       // Currently, this is only features provided by babel languages
+       // (such as textgreek)
+       if (provides_.find(name) != provides_.end())
+               return true;
+
        if (params_.useNonTeXFonts)
                return params_.documentClass().provides(name);
 
@@ -634,9 +648,6 @@ bool LaTeXFeatures::isProvided(string const & name) const
                        from_ascii(params_.fontsMath())).provides(name, ot1,
                                                                       complete,
                                                                       nomath);
-       // TODO: "textbaltic" provided, if the font-encoding is "L7x"
-       //       "textgreek" provided, if a language with font-encoding LGR is used in the document
-       //       "textcyr" provided, if a language with font-encoding T2A is used in the document
 }
 
 
@@ -737,11 +748,14 @@ void LaTeXFeatures::useLanguage(Language const * lang)
                UsedLanguages_.insert(lang);
        if (!lang->requires().empty())
                require(lang->requires());
+       // currently only supported for Babel
+       if (!lang->provides().empty() && useBabel())
+               provide(lang->provides());
        // CJK languages do not have a babel name.
        // They use the CJK package
        if (lang->encoding()->package() == Encoding::CJK)
                require("CJK");
-       // japanese package is special
+       // japanese babel language is special (tied to the pLaTeX engine).
        if (lang->encoding()->package() == Encoding::japanese)
                require("japanese");
 }
@@ -831,7 +845,7 @@ vector<string> LaTeXFeatures::getBabelExclusiveLanguages() const
 
 string LaTeXFeatures::getBabelLanguages() const
 {
-       ostringstream languages;
+       ostringstream langs;
 
        bool first = true;
        LanguageList::const_iterator const begin = UsedLanguages_.begin();
@@ -841,27 +855,27 @@ string LaTeXFeatures::getBabelLanguages() const
                if ((*cit)->babel().empty())
                        continue;
                if (!first)
-                       languages << ',';
+                       langs << ',';
                else
                        first = false;
-               languages << (*cit)->babel();
+               langs << (*cit)->babel();
        }
-       return languages.str();
+       return langs.str();
 }
 
 
 set<string> LaTeXFeatures::getPolyglossiaLanguages() const
 {
-       set<string> languages;
+       set<string> langs;
 
        LanguageList::const_iterator const begin = UsedLanguages_.begin();
        for (LanguageList::const_iterator cit = begin;
             cit != UsedLanguages_.end();
             ++cit) {
                // We do not need the variants here
-               languages.insert((*cit)->polyglossia());
+               langs.insert((*cit)->polyglossia());
        }
-       return languages;
+       return langs;
 }
 
 
@@ -870,49 +884,57 @@ set<string> LaTeXFeatures::getEncodingSet(string const & doc_encoding) const
        // This does only find encodings of languages supported by babel, but
        // that does not matter since we don't have a language with an
        // encoding supported by inputenc but without babel support.
-       set<string> encodings;
-       LanguageList::const_iterator it  = UsedLanguages_.begin();
-       LanguageList::const_iterator end = UsedLanguages_.end();
-       for (; it != end; ++it)
-               if ((*it)->encoding()->latexName() != doc_encoding &&
-                   ((*it)->encoding()->package() == Encoding::inputenc
-                    || (*it)->encoding()->package() == Encoding::japanese))
-                       encodings.insert((*it)->encoding()->latexName());
-       return encodings;
+       set<string> encs;
+       for (auto const & lang : UsedLanguages_)
+               if (lang->encoding()->latexName() != doc_encoding &&
+                   lang->encoding()->package() == Encoding::inputenc)
+                       encs.insert(lang->encoding()->latexName());
+       return encs;
 }
 
 
-void LaTeXFeatures::getFontEncodings(vector<string> & encodings) const
+void LaTeXFeatures::getFontEncodings(vector<string> & encs, bool const onlylangs) const
 {
-       // these must be loaded if glyphs of this script are used
-       // unless a language providing them is used in the document
-       if (mustProvide("textgreek")
-           && find(encodings.begin(), encodings.end(), "LGR") == encodings.end())
-               encodings.insert(encodings.begin(), "LGR");
-       if (mustProvide("textcyr")
-           && find(encodings.begin(), encodings.end(), "T2A") == encodings.end())
-               encodings.insert(encodings.begin(), "T2A");
-
-       LanguageList::const_iterator it  = UsedLanguages_.begin();
-       LanguageList::const_iterator end = UsedLanguages_.end();
-       for (; it != end; ++it)
-               if (!(*it)->fontenc().empty()
-                   && ascii_lowercase((*it)->fontenc()) != "none") {
-                       vector<string> extraencs = getVectorFromString((*it)->fontenc());
-                       vector<string>::const_iterator fit = extraencs.begin();
-                       for (; fit != extraencs.end(); ++fit) {
-                               if (find(encodings.begin(), encodings.end(), *fit) == encodings.end())
-                                       encodings.insert(encodings.begin(), *fit);
-                       }
+       if (!onlylangs) {
+               // these must be loaded if glyphs of this script are used
+               // unless a language providing them is used in the document
+               if (mustProvide("textgreek")
+                   && find(encs.begin(), encs.end(), "LGR") == encs.end())
+                       encs.insert(encs.begin(), "LGR");
+               if ((mustProvide("textcyrillic") || mustProvide("textschwa"))
+                   && find(encs.begin(), encs.end(), "T2A") == encs.end())
+                       encs.insert(encs.begin(), "T2A");
+       }
+
+       for (auto const & lang : UsedLanguages_) {
+               vector<string> extraencs =
+                       getVectorFromString(lang->fontenc(buffer().masterParams()));
+               for (auto const & extra : extraencs) {
+                       if (extra != "none" && find(encs.begin(), encs.end(), extra) == encs.end())
+                               encs.insert(encs.begin(), extra);
                }
+       }
+}
+
+
+bool LaTeXFeatures::hasRTLLanguage() const
+{
+       if (params_.language->rightToLeft())
+               return true;
+       for (auto const & lang : UsedLanguages_)
+               if (lang->rightToLeft())
+                       return true;
+       return false;
 }
 
+
 namespace {
 
 char const * simplefeatures[] = {
 // note that the package order here will be the same in the LaTeX-output
        "array",
        "verbatim",
+       "cprotect",
        "longtable",
        "rotating",
        "latexsym",
@@ -935,8 +957,7 @@ char const * simplefeatures[] = {
        "units",
        "framed",
        "soul",
-       "textcomp",
-       "pmboxdraw",
+       "dingbat",
        "bbding",
        "ifsym",
        "txfonts",
@@ -948,7 +969,6 @@ char const * simplefeatures[] = {
        // "cancel",
        "ascii",
        "url",
-       "covington",
        "csquotes",
        "enumitem",
        "endnotes",
@@ -973,8 +993,14 @@ char const * simplefeatures[] = {
        "todonotes",
        "forest",
        "varwidth",
-       "footnote",
        "tablefootnote",
+       "afterpage",
+       "tabularx",
+       "xltabular",
+       "chessboard",
+       "xskak",
+       "pict2e",
+       "drs"
 };
 
 char const * bibliofeatures[] = {
@@ -1097,6 +1123,22 @@ string const LaTeXFeatures::getPackages() const
        // The rest of these packages are somewhat more complicated
        // than those above.
 
+       if (mustProvide("footnote")) {
+               if (isRequired("hyperref"))
+                       packages << "\\usepackage{footnotehyper}\n";
+               else
+                       packages << "\\usepackage{footnote}\n";
+       }
+
+       // [pdf]lscape is used to rotate longtables
+       if (mustProvide("lscape")) {
+               if (runparams_.flavor == OutputParams::LATEX
+                   || runparams_.flavor == OutputParams::DVILUATEX)
+                       packages << "\\usepackage{lscape}\n";
+               else
+                       packages << "\\usepackage{pdflscape}\n";
+       }
+
        // The tipa package and its extensions (tipx, tone) must not
        // be loaded with non-TeX fonts, since fontspec includes the
        // respective macros
@@ -1231,7 +1273,11 @@ string const LaTeXFeatures::getPackages() const
        // Some classes load natbib themselves, but still allow (or even require)
        // plain numeric citations (ReVTeX is such a case, see bug 5182).
        // This special case is indicated by the "natbib-internal" key.
-       if (mustProvide("natbib") && !isProvided("natbib-internal")) {
+       if (mustProvide("natbib")
+           && !isProvided("natbib-internal")
+           && !isProvided("biblatex")
+           && !isProvided("biblatex-natbib")
+           && !isProvided("jurabib")) {
                packages << "\\usepackage[";
                if (params_.citeEngineType() == ENGINE_TYPE_NUMERICAL)
                        packages << "numbers";
@@ -1250,7 +1296,11 @@ string const LaTeXFeatures::getPackages() const
        }
 
        // jurabib -- we need version 0.6 at least.
-       if (mustProvide("jurabib")) {
+       if (mustProvide("jurabib")
+           && !isProvided("natbib-internal")
+           && !isProvided("natbib")
+           && !isProvided("biblatex")
+           && !isProvided("biblatex-natbib")) {
                packages << "\\usepackage";
                if (!params_.biblio_opts.empty())
                        packages << '[' << params_.biblio_opts << ']';
@@ -1331,10 +1381,24 @@ TexString LaTeXFeatures::getMacros() const
        }
 
        if (mustProvide("LyX")) {
+               macros << "\\providecommand{\\LyX}";
+               // open conditional wrappers
+               if (runparams_.use_polyglossia && hasRTLLanguage())
+                       macros << "{\\@ensure@LTR";
                if (isRequired("hyperref"))
-                       macros << lyx_hyperref_def << '\n';
-               else
-                       macros << lyx_def << '\n';
+                       macros << "{\\texorpdfstring";
+               if (useBabel())
+                       macros << "{\\ensureascii";
+               // main definition
+               macros << lyx_def;
+               // close conditional wrappers
+               if (useBabel())
+                       macros << '}';
+               if (isRequired("hyperref"))
+                       macros << "{LyX}}";
+               if (runparams_.use_polyglossia && hasRTLLanguage())
+                       macros << '}';
+               macros << '\n';
        }
 
        if (mustProvide("noun"))
@@ -1353,7 +1417,7 @@ TexString LaTeXFeatures::getMacros() const
                macros << textgreek_def << '\n';
        }
 
-       if (!usePolyglossia() && mustProvide("textcyr")) {
+       if (!usePolyglossia() && mustProvide("textcyrillic")) {
                // ensure T2A font encoding is set up also if fontenc is not loaded by LyX
                if (params_.main_font_encoding() == "default")
                        macros << textcyr_T2A_def;
@@ -1377,6 +1441,9 @@ TexString LaTeXFeatures::getMacros() const
        if (mustProvide("textbaltic"))
                macros << textbaltic_def << '\n';
 
+       if (mustProvide("textschwa"))
+               macros << textschwa_def << '\n';
+
        // split-level fractions
        if (mustProvide("xfrac") || mustProvide("smallLetterFrac"))
                macros << xfrac_def << '\n';
@@ -1549,21 +1616,6 @@ docstring const LaTeXFeatures::getBabelPostsettings() const
 }
 
 
-bool LaTeXFeatures::needBabelLangOptions() const
-{
-       if (!lyxrc.language_global_options || params_.language->asBabelOptions())
-               return true;
-
-       LanguageList::const_iterator it  = UsedLanguages_.begin();
-       LanguageList::const_iterator end = UsedLanguages_.end();
-       for (; it != end; ++it)
-               if ((*it)->asBabelOptions())
-                       return true;
-
-       return false;
-}
-
-
 string const LaTeXFeatures::loadAMSPackages() const
 {
        ostringstream tmp;
@@ -1859,9 +1911,11 @@ docstring const LaTeXFeatures::getTClassI18nPreamble(bool use_babel,
                // encodings, only with fixed width encodings. Therefore we
                // need to force a fixed width encoding for
                // \lstlistlistingname and \lstlistingname (bug 9382).
-               // This needs to be consistent with InsetListings::latex().
+               // This needs to be consistent with InsetListings::latex()
+               // rsp. InsetListings::forcedEncoding().
                bool const need_fixedwidth = !use_minted &&
                                        !runparams_.isFullUnicode() &&
+                                       buffer().params().encoding().package() != Encoding::japanese &&
                                        it->second.fixedwidthpreambleencoding();
                // language dependent commands (once per document)
                snippets.insert(i18npreamble(it->second.langpreamble(),