]> git.lyx.org Git - lyx.git/blobdiff - src/Paragraph.cpp
* src/frontends/GuiDocument.{cpp,h}:
[lyx.git] / src / Paragraph.cpp
index fa8bb4140b6b53f786cfb97dd09f5b814b139687..4f4d9ff5630454a6e255d9183443a39fdf8786b7 100644 (file)
 #include "Changes.h"
 #include "Counters.h"
 #include "Encoding.h"
-#include "debug.h"
-#include "gettext.h"
 #include "InsetList.h"
 #include "Language.h"
 #include "LaTeXFeatures.h"
-#include "Color.h"
 #include "Layout.h"
 #include "Length.h"
 #include "Font.h"
 #include "FontList.h"
 #include "LyXRC.h"
-#include "Messages.h"
 #include "OutputParams.h"
 #include "output_latex.h"
 #include "paragraph_funcs.h"
 #include "ParagraphParameters.h"
 #include "sgml.h"
+#include "TextClass.h"
 #include "TexRow.h"
 #include "VSpace.h"
 
 #include "frontends/FontMetrics.h"
 
 #include "insets/InsetBibitem.h"
-#include "insets/InsetOptArg.h"
+#include "insets/InsetLabel.h"
 
+#include "support/convert.h"
+#include "support/debug.h"
+#include "support/gettext.h"
 #include "support/lstrings.h"
+#include "support/Messages.h"
 #include "support/textutils.h"
-#include "support/convert.h"
-#include "support/unicode.h"
 
 #include <sstream>
+#include <vector>
 
-using std::endl;
-using std::string;
-using std::ostream;
+using namespace std;
+using namespace lyx::support;
 
 namespace lyx {
 
-using support::contains;
-using support::prefixIs;
-using support::suffixIs;
-using support::rsplit;
-using support::rtrim;
-
+namespace {
+/// Inset identifier (above 0x10ffff, for ucs-4)
+char_type const META_INSET = 0x200001;
+};
 
 /////////////////////////////////////////////////////////////////////
 //
@@ -85,30 +82,28 @@ public:
        Private(Private const &, Paragraph * owner);
 
        ///
-       value_type getChar(pos_type pos) const;
-       ///
-       void insertChar(pos_type pos, value_type c, Change const & change);
+       void insertChar(pos_type pos, char_type c, Change const & change);
 
        /// Output the surrogate pair formed by \p c and \p next to \p os.
        /// \return the number of characters written.
-       int latexSurrogatePair(odocstream & os, value_type c, value_type next,
+       int latexSurrogatePair(odocstream & os, char_type c, char_type next,
                               Encoding const &);
 
        /// Output a space in appropriate formatting (or a surrogate pair
        /// if the next character is a combining character).
        /// \return whether a surrogate pair was output.
-       bool simpleTeXBlanks(Encoding const &,
+       bool simpleTeXBlanks(OutputParams const &,
                             odocstream &, TexRow & texrow,
                             pos_type i,
                             unsigned int & column,
                             Font const & font,
                             Layout const & style);
 
-       /// Output consecutive known unicode chars, belonging to the same
-       /// language as specified by \p preamble, to \p os starting from \p c.
+       /// Output consecutive unicode chars, belonging to the same script as
+       /// specified by the latex macro \p ltx, to \p os starting from \p i.
        /// \return the number of characters written.
-       int knownLangChars(odocstream & os, value_type c, string & preamble,
-                          Change &, Encoding const &, pos_type &);
+       int writeScriptChars(odocstream & os, docstring const & ltx,
+                          Change &, Encoding const &, pos_type & i);
 
        /// This could go to ParagraphParameters if we want to.
        int startTeXParParams(BufferParams const &, odocstream &, TexRow &,
@@ -157,17 +152,19 @@ public:
        bool latexSpecialPhrase(
                odocstream & os,
                pos_type & i,
-               unsigned int & column);
+               unsigned int & column,
+               OutputParams & runparams);
 
        ///
        void validate(LaTeXFeatures & features,
                      Layout const & layout) const;
 
-       ///
-       pos_type size() const { return owner_->size(); }
+       /// Checks if the paragraph contains only text and no inset or font change.
+       bool onlyText(Buffer const & buf, Font const & outerfont,
+                     pos_type initial) const;
 
        /// match a string against a particular point in the paragraph
-       bool isTextAt(std::string const & str, pos_type pos) const;
+       bool isTextAt(string const & str, pos_type pos) const;
        
        /// Which Paragraph owns us?
        Paragraph * owner_;
@@ -196,15 +193,11 @@ public:
 
        /// end of label
        pos_type begin_of_body_;
-};
 
-
-
-
-using std::endl;
-using std::upper_bound;
-using std::lower_bound;
-using std::string;
+       typedef docstring TextContainer;
+       ///
+       TextContainer text_;
+};
 
 
 // Initialization of the counter for the paragraph id's,
@@ -219,10 +212,10 @@ struct special_phrase {
 };
 
 special_phrase const special_phrases[] = {
-       { "LyX", from_ascii("\\protect\\LyX{}"), false },
-       { "TeX", from_ascii("\\protect\\TeX{}"), true },
-       { "LaTeX2e", from_ascii("\\protect\\LaTeXe{}"), true },
-       { "LaTeX", from_ascii("\\protect\\LaTeX{}"), true },
+       { "LyX", from_ascii("\\LyX{}"), false },
+       { "TeX", from_ascii("\\TeX{}"), true },
+       { "LaTeX2e", from_ascii("\\LaTeXe{}"), true },
+       { "LaTeX", from_ascii("\\LaTeX{}"), true },
 };
 
 size_t const phrases_nr = sizeof(special_phrases)/sizeof(special_phrase);
@@ -234,13 +227,14 @@ Paragraph::Private::Private(Paragraph * owner)
        : owner_(owner), inset_owner_(0), begin_of_body_(0)
 {
        id_ = paragraph_id++;
+       text_.reserve(100);
 }
 
 
 Paragraph::Private::Private(Private const & p, Paragraph * owner)
        : owner_(owner), inset_owner_(p.inset_owner_), fontlist_(p.fontlist_), 
          params_(p.params_), changes_(p.changes_), insetlist_(p.insetlist_),
-         layout_(p.layout_), begin_of_body_(p.begin_of_body_)
+         layout_(p.layout_), begin_of_body_(p.begin_of_body_), text_(p.text_)
 {
        id_ = paragraph_id++;
 }
@@ -255,15 +249,13 @@ bool Paragraph::isChanged(pos_type start, pos_type end) const
 }
 
 
-bool Paragraph::isMergedOnEndOfParDeletion(bool trackChanges) const {
+bool Paragraph::isMergedOnEndOfParDeletion(bool trackChanges) const
+{
        // keep the logic here in sync with the logic of eraseChars()
-
-       if (!trackChanges) {
+       if (!trackChanges)
                return true;
-       }
-
-       Change change = d->changes_.lookup(size());
 
+       Change const change = d->changes_.lookup(size());
        return change.type == Change::INSERTED && change.author == 0;
 }
 
@@ -297,22 +289,17 @@ void Paragraph::setChange(Change const & change)
 void Paragraph::setChange(pos_type pos, Change const & change)
 {
        BOOST_ASSERT(pos >= 0 && pos <= size());
-
        d->changes_.set(change, pos);
 
        // see comment in setChange(Change const &) above
-
-       if (change.type != Change::DELETED &&
-           pos < size() && isInset(pos)) {
+       if (change.type != Change::DELETED && pos < size() && isInset(pos))
                getInset(pos)->setChange(change);
-       }
 }
 
 
 Change const & Paragraph::lookupChange(pos_type pos) const
 {
        BOOST_ASSERT(pos >= 0 && pos <= size());
-
        return d->changes_.lookup(pos);
 }
 
@@ -392,31 +379,23 @@ void Paragraph::rejectChanges(BufferParams const & bparams,
 }
 
 
-Paragraph::value_type Paragraph::Private::getChar(pos_type pos) const
-{
-       BOOST_ASSERT(pos >= 0 && pos <= size());
-
-       return owner_->getChar(pos);
-}
-
-
-void Paragraph::Private::insertChar(pos_type pos, value_type c,
+void Paragraph::Private::insertChar(pos_type pos, char_type c,
                Change const & change)
 {
-       BOOST_ASSERT(pos >= 0 && pos <= size());
+       BOOST_ASSERT(pos >= 0 && pos <= int(text_.size()));
 
        // track change
        changes_.insert(change, pos);
 
        // This is actually very common when parsing buffers (and
        // maybe inserting ascii text)
-       if (pos == size()) {
+       if (pos == pos_type(text_.size())) {
                // when appending characters, no need to update tables
-               owner_->text_.push_back(c);
+               text_.push_back(c);
                return;
        }
 
-       owner_->text_.insert(owner_->text_.begin() + pos, c);
+       text_.insert(text_.begin() + pos, c);
 
        // Update the font table.
        fontlist_.increasePosAfterPos(pos);
@@ -433,7 +412,7 @@ void Paragraph::insertInset(pos_type pos, Inset * inset,
        BOOST_ASSERT(pos >= 0 && pos <= size());
 
        d->insertChar(pos, META_INSET, change);
-       BOOST_ASSERT(text_[pos] == META_INSET);
+       BOOST_ASSERT(d->text_[pos] == META_INSET);
 
        // Add a new entry in the insetlist_.
        d->insetlist_.insert(inset, pos);
@@ -474,10 +453,10 @@ bool Paragraph::eraseChar(pos_type pos, bool trackChanges)
        d->changes_.erase(pos);
 
        // if it is an inset, delete the inset entry
-       if (text_[pos] == Paragraph::META_INSET)
+       if (d->text_[pos] == META_INSET)
                d->insetlist_.erase(pos);
 
-       text_.erase(text_.begin() + pos);
+       d->text_.erase(d->text_.begin() + pos);
 
        // Update the fontlist_
        d->fontlist_.erase(pos);
@@ -503,8 +482,8 @@ int Paragraph::eraseChars(pos_type start, pos_type end, bool trackChanges)
 }
 
 
-int Paragraph::Private::latexSurrogatePair(odocstream & os, value_type c,
-               value_type next, Encoding const & encoding)
+int Paragraph::Private::latexSurrogatePair(odocstream & os, char_type c,
+               char_type next, Encoding const & encoding)
 {
        // Writing next here may circumvent a possible font change between
        // c and next. Since next is only output if it forms a surrogate pair
@@ -520,19 +499,20 @@ int Paragraph::Private::latexSurrogatePair(odocstream & os, value_type c,
 }
 
 
-bool Paragraph::Private::simpleTeXBlanks(Encoding const & encoding,
+bool Paragraph::Private::simpleTeXBlanks(OutputParams const & runparams,
                                       odocstream & os, TexRow & texrow,
                                       pos_type i,
                                       unsigned int & column,
                                       Font const & font,
                                       Layout const & style)
 {
-       if (style.pass_thru)
+       if (style.pass_thru || runparams.verbatim)
                return false;
 
-       if (i + 1 < size()) {
-               char_type next = getChar(i + 1);
+       if (i + 1 < int(text_.size())) {
+               char_type next = text_[i + 1];
                if (Encodings::isCombiningChar(next)) {
+                       Encoding const & encoding = *(runparams.encoding);
                        // This space has an accent, so we must always output it.
                        column += latexSurrogatePair(os, ' ', next, encoding) - 1;
                        return true;
@@ -542,17 +522,17 @@ bool Paragraph::Private::simpleTeXBlanks(Encoding const & encoding,
        if (lyxrc.plaintext_linelen > 0
            && column > lyxrc.plaintext_linelen
            && i
-           && getChar(i - 1) != ' '
-           && (i + 1 < size())
+           && text_[i - 1] != ' '
+           && (i + 1 < int(text_.size()))
            // same in FreeSpacing mode
            && !owner_->isFreeSpacing()
            // In typewriter mode, we want to avoid
            // ! . ? : at the end of a line
-           && !(font.family() == Font::TYPEWRITER_FAMILY
-                && (getChar(i - 1) == '.'
-                    || getChar(i - 1) == '?'
-                    || getChar(i - 1) == ':'
-                    || getChar(i - 1) == '!'))) {
+           && !(font.fontInfo().family() == TYPEWRITER_FAMILY
+                && (text_[i - 1] == '.'
+                    || text_[i - 1] == '?'
+                    || text_[i - 1] == ':'
+                    || text_[i - 1] == '!'))) {
                os << '\n';
                texrow.newline();
                texrow.start(owner_->id(), i + 1);
@@ -566,27 +546,35 @@ bool Paragraph::Private::simpleTeXBlanks(Encoding const & encoding,
 }
 
 
-int Paragraph::Private::knownLangChars(odocstream & os,
-                                    value_type c,
-                                    string & preamble,
-                                    Change & runningChange,
-                                    Encoding const & encoding,
-                                    pos_type & i)
-{
-       // When the character is marked by the proper language, we simply
-       // get its code point in some encoding, otherwise we get the
-       // translation specified in the unicodesymbols file, which is
-       // something like "\textLANG{<spec>}". So, we have to retain
-       // "\textLANG{<spec>" for the first char but only "<spec>" for
-       // all subsequent chars.
-       docstring const latex1 = rtrim(encoding.latexChar(c), "}");
-       int length = latex1.length();
-       os << latex1;
-       while (i + 1 < size()) {
-               char_type next = getChar(i + 1);
-               // Stop here if next character belongs to another
-               // language or there is a change tracking status.
-               if (!Encodings::isKnownLangChar(next, preamble) ||
+int Paragraph::Private::writeScriptChars(odocstream & os,
+                                        docstring const & ltx,
+                                        Change & runningChange,
+                                        Encoding const & encoding,
+                                        pos_type & i)
+{
+       // FIXME: modifying i here is not very nice...
+
+       // We only arrive here when a proper language for character text_[i] has
+       // not been specified (i.e., it could not be translated in the current
+       // latex encoding) and it belongs to a known script.
+       // Parameter ltx contains the latex translation of text_[i] as specified in
+       // the unicodesymbols file and is something like "\textXXX{<spec>}".
+       // The latex macro name "textXXX" specifies the script to which text_[i]
+       // belongs and we use it in order to check whether characters from the
+       // same script immediately follow, such that we can collect them in a
+       // single "\textXXX" macro. So, we have to retain "\textXXX{<spec>"
+       // for the first char but only "<spec>" for all subsequent chars.
+       docstring::size_type const brace1 = ltx.find_first_of(from_ascii("{"));
+       docstring::size_type const brace2 = ltx.find_last_of(from_ascii("}"));
+       string script = to_ascii(ltx.substr(1, brace1 - 1));
+       int length = ltx.substr(0, brace2).length();
+       os << ltx.substr(0, brace2);
+       int size = text_.size();
+       while (i + 1 < size) {
+               char_type const next = text_[i + 1];
+               // Stop here if next character belongs to another script
+               // or there is a change in change tracking status.
+               if (!Encodings::isKnownScriptChar(next, script) ||
                    runningChange != owner_->lookupChange(i + 1))
                        break;
                Font prev_font;
@@ -601,27 +589,21 @@ int Paragraph::Private::knownLangChars(odocstream & os,
                        if (cit->pos() >= i + 1)
                                break;
                }
-               // Stop here if there is a font attribute change.
+               // Stop here if there is a font attribute or encoding change.
                if (found && cit != end && prev_font != cit->font())
                        break;
-               docstring const latex = rtrim(encoding.latexChar(next), "}");
-               docstring::size_type const j =
+               docstring const latex = encoding.latexChar(next);
+               docstring::size_type const b1 =
                                        latex.find_first_of(from_ascii("{"));
-               if (j == docstring::npos) {
-                       os << latex;
-                       length += latex.length();
-               } else {
-                       os << latex.substr(j + 1);
-                       length += latex.substr(j + 1).length();
-               }
+               docstring::size_type const b2 =
+                                       latex.find_last_of(from_ascii("}"));
+               int const len = b2 - b1 - 1;
+               os << latex.substr(b1 + 1, len);
+               length += len;
                ++i;
        }
-       // When the proper language is set, we are simply passed a code
-       // point, so we should not try to close the \textLANG command.
-       if (prefixIs(latex1, from_ascii("\\" + preamble))) {
-               os << '}';
-               ++length;
-       }
+       os << '}';
+       ++length;
        return length;
 }
 
@@ -631,14 +613,14 @@ bool Paragraph::Private::isTextAt(string const & str, pos_type pos) const
        pos_type const len = str.length();
 
        // is the paragraph large enough?
-       if (pos + len > size())
+       if (pos + len > int(text_.size()))
                return false;
 
        // does the wanted text start at point?
        for (string::size_type i = 0; i < str.length(); ++i) {
                // Caution: direct comparison of characters works only
                // because str is pure ASCII.
-               if (str[i] != owner_->text_[pos + i])
+               if (str[i] != text_[pos + i])
                        return false;
        }
 
@@ -682,7 +664,7 @@ void Paragraph::Private::latexInset(Buffer const & buf,
                                open_font = false;
                        }
 
-                       if (running_font.family() == Font::TYPEWRITER_FAMILY)
+                       if (running_font.fontInfo().family() == TYPEWRITER_FAMILY)
                                os << '~';
 
                        basefont = owner_->getLayoutFont(bparams, outerfont);
@@ -691,7 +673,6 @@ void Paragraph::Private::latexInset(Buffer const & buf,
                        if (runparams.moving_arg)
                                os << "\\protect ";
 
-                       os << "\\\\\n";
                }
                texrow.newline();
                texrow.start(owner_->id(), i + 1);
@@ -712,10 +693,10 @@ void Paragraph::Private::latexInset(Buffer const & buf,
        bool close = false;
        odocstream::pos_type const len = os.tellp();
 
-       if ((inset->lyxCode() == GRAPHICS_CODE
-            || inset->lyxCode() == MATH_CODE
-            || inset->lyxCode() == HYPERLINK_CODE)
-           && running_font.isRightToLeft()) {
+       if (inset->forceLTR() 
+           && running_font.isRightToLeft()
+               // ERT is an exception, it should be output with no decorations at all
+               && inset->lyxCode() != ERT_CODE) {
                if (running_font.language()->lang() == "farsi")
                        os << "\\beginL{}";
                else
@@ -791,7 +772,7 @@ void Paragraph::Private::latexSpecialChar(
                                             pos_type & i,
                                             unsigned int & column)
 {
-       value_type const c = getChar(i);
+       char_type const c = text_[i];
 
        if (style.pass_thru) {
                if (c != '\0')
@@ -809,7 +790,7 @@ void Paragraph::Private::latexSpecialChar(
        if (lyxrc.fontenc == "T1" && latexSpecialT1(c, os, i, column))
                return;
 
-       if (running_font.family() == Font::TYPEWRITER_FAMILY
+       if (running_font.fontInfo().family() == TYPEWRITER_FAMILY
                && latexSpecialTypewriter(c, os, i, column))
                return;
 
@@ -876,29 +857,28 @@ void Paragraph::Private::latexSpecialChar(
        default:
 
                // LyX, LaTeX etc.
-               if (latexSpecialPhrase(os, i, column))
+               if (latexSpecialPhrase(os, i, column, runparams))
                        return;
 
                if (c == '\0')
                        return;
 
                Encoding const & encoding = *(runparams.encoding);
-               if (i + 1 < size()) {
-                       char_type next = getChar(i + 1);
+               if (i + 1 < int(text_.size())) {
+                       char_type next = text_[i + 1];
                        if (Encodings::isCombiningChar(next)) {
                                column += latexSurrogatePair(os, c, next, encoding) - 1;
                                ++i;
                                break;
                        }
                }
-               string preamble;
-               if (Encodings::isKnownLangChar(c, preamble)) {
-                       column += knownLangChars(os, c, preamble, running_change,
-                               encoding, i) - 1;
-                       break;
-               }
+               string script;
                docstring const latex = encoding.latexChar(c);
-               if (latex.length() > 1 && latex[latex.length() - 1] != '}') {
+               if (Encodings::isKnownScriptChar(c, script)
+                   && prefixIs(latex, from_ascii("\\" + script)))
+                       column += writeScriptChars(os, latex,
+                                       running_change, encoding, i) - 1;
+               else if (latex.length() > 1 && latex[latex.length() - 1] != '}') {
                        // Prevent eating of a following
                        // space or command corruption by
                        // following characters
@@ -922,7 +902,7 @@ bool Paragraph::Private::latexSpecialT1(char_type const c, odocstream & os,
                os.put(c);
                // In T1 encoding, these characters exist
                // but we should avoid ligatures
-               if (i + 1 > size() || getChar(i + 1) != c)
+               if (i + 1 >= int(text_.size()) || text_[i + 1] != c)
                        return true;
                os << "\\,{}";
                column += 3;
@@ -944,7 +924,7 @@ bool Paragraph::Private::latexSpecialTypewriter(char_type const c, odocstream &
 {
        switch (c) {
        case '-':
-               if (i + 1 < size() && getChar(i + 1) == '-') {
+               if (i + 1 < int(text_.size()) && text_[i + 1] == '-') {
                        // "--" in Typewriter mode -> "-{}-"
                        os << "-{}";
                        column += 2;
@@ -980,7 +960,7 @@ bool Paragraph::Private::latexSpecialTypewriter(char_type const c, odocstream &
 
 
 bool Paragraph::Private::latexSpecialPhrase(odocstream & os, pos_type & i,
-       unsigned int & column)
+       unsigned int & column, OutputParams & runparams)
 {
        // FIXME: if we have "LaTeX" with a font
        // change in the middle (before the 'T', then
@@ -991,6 +971,8 @@ bool Paragraph::Private::latexSpecialPhrase(odocstream & os, pos_type & i,
        for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
                if (!isTextAt(special_phrases[pnr].phrase, i))
                        continue;
+               if (runparams.moving_arg)
+                       os << "\\protect";
                os << special_phrases[pnr].macro;
                i += special_phrases[pnr].phrase.length() - 1;
                column += special_phrases[pnr].macro.length() - 1;
@@ -1009,6 +991,13 @@ void Paragraph::Private::validate(LaTeXFeatures & features,
 
        // then the layouts
        features.useLayout(layout.name());
+       if (!layout.requires().empty()) {
+               vector<string> req = layout.requires();
+               for (vector<string>::const_iterator it = req.begin();
+                    it != req.end(); ++it) {
+                       features.require(*it);
+               }
+       }
 
        // then the fonts
        fontlist_.validate(features);
@@ -1030,7 +1019,7 @@ void Paragraph::Private::validate(LaTeXFeatures & features,
        }
 
        // then the contents
-       for (pos_type i = 0; i < size() ; ++i) {
+       for (pos_type i = 0; i < int(text_.size()) ; ++i) {
                for (size_t pnr = 0; pnr < phrases_nr; ++pnr) {
                        if (!special_phrases[pnr].builtin
                            && isTextAt(special_phrases[pnr].phrase, i)) {
@@ -1038,7 +1027,7 @@ void Paragraph::Private::validate(LaTeXFeatures & features,
                                break;
                        }
                }
-               Encodings::validate(getChar(i), features);
+               Encodings::validate(text_[i], features);
        }
 }
 
@@ -1053,12 +1042,11 @@ Paragraph::Paragraph()
 {
        itemdepth = 0;
        d->params_.clear();
-       text_.reserve(100);
 }
 
 
 Paragraph::Paragraph(Paragraph const & par)
-       : itemdepth(par.itemdepth),     text_(par.text_),
+       : itemdepth(par.itemdepth),
        d(new Paragraph::Private(*par.d, this))
 {
 }
@@ -1069,7 +1057,6 @@ Paragraph & Paragraph::operator=(Paragraph const & par)
        // needed as we will destroy the private part before copying it
        if (&par != this) {
                itemdepth = par.itemdepth;
-               text_ = par.text_;
 
                delete d;
                d = new Private(*par.d, this);
@@ -1108,7 +1095,7 @@ void Paragraph::write(Buffer const & buf, ostream & os,
 
        params().write(os);
 
-       Font font1(Font::ALL_INHERIT, bparams.language);
+       Font font1(inherit_font, bparams.language);
 
        Change running_change = Change(Change::UNCHANGED);
 
@@ -1130,7 +1117,7 @@ void Paragraph::write(Buffer const & buf, ostream & os,
                        font1 = font2;
                }
 
-               value_type const c = getChar(i);
+               char_type const c = d->text_[i];
                switch (c) {
                case META_INSET:
                {
@@ -1156,7 +1143,7 @@ void Paragraph::write(Buffer const & buf, ostream & os,
                        column = 0;
                        break;
                case '.':
-                       if (i + 1 < size() && getChar(i + 1) == ' ') {
+                       if (i + 1 < size() && d->text_[i + 1] == ' ') {
                                os << ".\n";
                                column = 0;
                        } else
@@ -1170,11 +1157,9 @@ void Paragraph::write(Buffer const & buf, ostream & os,
                        }
                        // this check is to amend a bug. LyX sometimes
                        // inserts '\0' this could cause problems.
-                       if (c != '\0') {
-                               std::vector<char> tmp = ucs4_to_utf8(c);
-                               tmp.push_back('\0');
-                               os << &tmp[0];
-                       } else
+                       if (c != '\0')
+                               os << to_utf8(docstring(1, c));
+                       else
                                lyxerr << "ERROR (Paragraph::writeFile):"
                                        " NULL char in structure." << endl;
                        ++column;
@@ -1200,39 +1185,41 @@ void Paragraph::insert(pos_type start, docstring const & str,
 }
 
 
-void Paragraph::appendChar(value_type c, Font const & font,
+void Paragraph::appendChar(char_type c, Font const & font,
                Change const & change)
 {
        // track change
-       d->changes_.insert(change, text_.size());
+       d->changes_.insert(change, d->text_.size());
        // when appending characters, no need to update tables
-       text_.push_back(c);
-       setFont(text_.size() - 1, font);
+       d->text_.push_back(c);
+       setFont(d->text_.size() - 1, font);
 }
 
 
 void Paragraph::appendString(docstring const & s, Font const & font,
                Change const & change)
 {
-       size_t end = s.size();
-       size_t oldsize = text_.size();
+       pos_type end = s.size();
+       size_t oldsize = d->text_.size();
        size_t newsize = oldsize + end;
-       size_t capacity = text_.capacity();
+       size_t capacity = d->text_.capacity();
        if (newsize >= capacity)
-               text_.reserve(std::max(capacity + 100, newsize));
+               d->text_.reserve(max(capacity + 100, newsize));
+
+       // when appending characters, no need to update tables
+       d->text_.append(s);
 
        // FIXME: Optimize this!
        for (pos_type i = 0; i != end; ++i) {
                // track change
                d->changes_.insert(change, i);
-               // when appending characters, no need to update tables
-               text_.push_back(s[i]);
        }
-       d->fontlist_.setRange(oldsize, newsize, font);
+       d->fontlist_.set(oldsize, font);
+       d->fontlist_.set(newsize - 1, font);
 }
 
 
-void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
+void Paragraph::insertChar(pos_type pos, char_type c,
                           bool trackChanges)
 {
        d->insertChar(pos, c, Change(trackChanges ?
@@ -1240,7 +1227,7 @@ void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 }
 
 
-void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
+void Paragraph::insertChar(pos_type pos, char_type c,
                           Font const & font, bool trackChanges)
 {
        d->insertChar(pos, c, Change(trackChanges ?
@@ -1249,7 +1236,7 @@ void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
 }
 
 
-void Paragraph::insertChar(pos_type pos, Paragraph::value_type c,
+void Paragraph::insertChar(pos_type pos, char_type c,
                           Font const & font, Change const & change)
 {
        d->insertChar(pos, c, change);
@@ -1272,6 +1259,13 @@ bool Paragraph::insetAllowed(InsetCode code)
 }
 
 
+void Paragraph::resetFonts(Font const & font)
+{
+       d->fontlist_.clear();
+       d->fontlist_.set(0, font);
+       d->fontlist_.set(d->text_.size() - 1, font);
+}
+
 // Gets uninstantiated font setting at position.
 Font const Paragraph::getFontSettings(BufferParams const & bparams,
                                         pos_type pos) const
@@ -1288,7 +1282,7 @@ Font const Paragraph::getFontSettings(BufferParams const & bparams,
        if (pos == size() && !empty())
                return getFontSettings(bparams, pos - 1);
 
-       return Font(Font::ALL_INHERIT, getParLanguage(bparams));
+       return Font(inherit_font, getParLanguage(bparams));
 }
 
 
@@ -1302,11 +1296,11 @@ FontSpan Paragraph::fontSpan(pos_type pos) const
        for (; cit != end; ++cit) {
                if (cit->pos() >= pos) {
                        if (pos >= beginOfBody())
-                               return FontSpan(std::max(start, beginOfBody()),
+                               return FontSpan(max(start, beginOfBody()),
                                                cit->pos());
                        else
                                return FontSpan(start,
-                                               std::min(beginOfBody() - 1,
+                                               min(beginOfBody() - 1,
                                                         cit->pos()));
                }
                start = cit->pos() + 1;
@@ -1325,7 +1319,7 @@ Font const Paragraph::getFirstFontSettings(BufferParams const & bparams) const
        if (!empty() && !d->fontlist_.empty())
                return d->fontlist_.begin()->font();
 
-       return Font(Font::ALL_INHERIT, bparams.language);
+       return Font(inherit_font, bparams.language);
 }
 
 
@@ -1343,12 +1337,12 @@ Font const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
 
        pos_type const body_pos = beginOfBody();
        if (pos < body_pos)
-               font.realize(d->layout_->labelfont);
+               font.fontInfo().realize(d->layout_->labelfont);
        else
-               font.realize(d->layout_->font);
+               font.fontInfo().realize(d->layout_->font);
 
-       font.realize(outerfont);
-       font.realize(bparams.getFont());
+       font.fontInfo().realize(outerfont.fontInfo());
+       font.fontInfo().realize(bparams.getFont().fontInfo());
 
        return font;
 }
@@ -1357,41 +1351,39 @@ Font const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
 Font const Paragraph::getLabelFont
        (BufferParams const & bparams, Font const & outerfont) const
 {
-       Font tmpfont = layout()->labelfont;
-       tmpfont.setLanguage(getParLanguage(bparams));
-       tmpfont.realize(outerfont);
-       tmpfont.realize(bparams.getFont());
-       return tmpfont;
+       FontInfo tmpfont = layout()->labelfont;
+       tmpfont.realize(outerfont.fontInfo());
+       tmpfont.realize(bparams.getFont().fontInfo());
+       return Font(tmpfont, getParLanguage(bparams));
 }
 
 
 Font const Paragraph::getLayoutFont
        (BufferParams const & bparams, Font const & outerfont) const
 {
-       Font tmpfont = layout()->font;
-       tmpfont.setLanguage(getParLanguage(bparams));
-       tmpfont.realize(outerfont);
-       tmpfont.realize(bparams.getFont());
-       return tmpfont;
+       FontInfo tmpfont = layout()->font;
+       tmpfont.realize(outerfont.fontInfo());
+       tmpfont.realize(bparams.getFont().fontInfo());
+       return Font(tmpfont, getParLanguage(bparams));
 }
 
 
 /// Returns the height of the highest font in range
-Font_size Paragraph::highestFontInRange
-       (pos_type startpos, pos_type endpos, Font_size def_size) const
+FontSize Paragraph::highestFontInRange
+       (pos_type startpos, pos_type endpos, FontSize def_size) const
 {
        return d->fontlist_.highestInRange(startpos, endpos, def_size);
 }
 
 
-Paragraph::value_type
+char_type
 Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 {
-       value_type c = getChar(pos);
+       char_type c = d->text_[pos];
        if (!lyxrc.rtl_support)
                return c;
 
-       value_type uc = c;
+       char_type uc = c;
        switch (c) {
        case '(':
                uc = ')';
@@ -1519,7 +1511,7 @@ void Paragraph::setLabelWidthString(docstring const & s)
 docstring const Paragraph::translateIfPossible(docstring const & s,
                BufferParams const & bparams) const
 {
-       if (!support::isAscii(s) || s.empty()) {
+       if (!isAscii(s) || s.empty()) {
                // This must be a user defined layout. We cannot translate
                // this, since gettext accepts only ascii keys.
                return s;
@@ -1602,11 +1594,11 @@ void Paragraph::setBeginOfBody()
                char_type previous_char = 0;
                char_type temp = 0;
                if (i < end) {
-                       previous_char = text_[i];
+                       previous_char = d->text_[i];
                        if (!isNewline(i)) {
                                ++i;
                                while (i < end && previous_char != ' ') {
-                                       temp = text_[i];
+                                       temp = d->text_[i];
                                        if (isNewline(i))
                                                break;
                                        ++i;
@@ -1620,17 +1612,6 @@ void Paragraph::setBeginOfBody()
 }
 
 
-InsetBibitem * Paragraph::bibitem() const
-{
-       if (!d->insetlist_.empty()) {
-               Inset * inset = d->insetlist_.begin()->inset;
-               if (inset->lyxCode() == BIBITEM_CODE)
-                       return static_cast<InsetBibitem *>(inset);
-       }
-       return 0;
-}
-
-
 bool Paragraph::forceDefaultParagraphs() const
 {
        return inInset() && inInset()->forceDefaultParagraphs(0);
@@ -1824,7 +1805,7 @@ bool Paragraph::latex(Buffer const & buf,
                                odocstream & os, TexRow & texrow,
                                OutputParams const & runparams) const
 {
-       LYXERR(Debug::LATEX) << "SimpleTeXOnePar...     " << this << endl;
+       LYXERR(Debug::LATEX, "SimpleTeXOnePar...     " << this);
 
        bool return_value = false;
 
@@ -1957,20 +1938,29 @@ bool Paragraph::latex(Buffer const & buf,
                        open_font = false;
                }
 
+               // close babel's font environment before opening CJK.
+               if (!running_font.language()->babel().empty() &&
+                   font.language()->encoding()->package() == Encoding::CJK) {
+                               string end_tag = subst(lyxrc.language_command_end,
+                                                       "$$lang",
+                                                       running_font.language()->babel());
+                               os << from_ascii(end_tag);
+                               column += end_tag.length();
+               }
+
                // Switch file encoding if necessary (and allowed)
                if (!runparams.verbatim && 
-                   runparams.encoding->package() == Encoding::inputenc &&
-                   font.language()->encoding()->package() == Encoding::inputenc) {
-                       std::pair<bool, int> const enc_switch = switchEncoding(os, bparams,
-                                       runparams.moving_arg, *(runparams.encoding),
-                                       *(font.language()->encoding()));
+                   runparams.encoding->package() == Encoding::none &&
+                   font.language()->encoding()->package() == Encoding::none) {
+                       pair<bool, int> const enc_switch = switchEncoding(os, bparams,
+                                       runparams, *(font.language()->encoding()));
                        if (enc_switch.first) {
                                column += enc_switch.second;
                                runparams.encoding = font.language()->encoding();
                        }
                }
 
-               value_type const c = getChar(i);
+               char_type const c = d->text_[i];
 
                // Do we need to change font?
                if ((font != running_font ||
@@ -2001,7 +1991,7 @@ bool Paragraph::latex(Buffer const & buf,
                        // style->pass_thru is false.
                        if (i != body_pos - 1) {
                                if (d->simpleTeXBlanks(
-                                               *(runparams.encoding), os, texrow,
+                                               runparams, os, texrow,
                                                i, column, font, *style)) {
                                        // A surrogate pair was output. We
                                        // must not call latexSpecialChar
@@ -2021,14 +2011,29 @@ bool Paragraph::latex(Buffer const & buf,
                // Two major modes:  LaTeX or plain
                // Handle here those cases common to both modes
                // and then split to handle the two modes separately.
-               if (c == Paragraph::META_INSET)
+               if (c == META_INSET)
                        d->latexInset(buf, bparams, os,
                                        texrow, rp, running_font,
                                        basefont, outerfont, open_font,
                                        runningChange, *style, i, column);
-               else
-                       d->latexSpecialChar(os, rp, running_font, runningChange,
-                               *style, i, column);
+               else {
+                       try {
+                               d->latexSpecialChar(os, rp, running_font, runningChange,
+                                       *style, i, column);
+                       } catch (EncodingException & e) {
+                               if (runparams.dryrun) {
+                                       os << "<" << _("LyX Warning: ")
+                                          << _("uncodable character") << " '";
+                                       os.put(c);
+                                       os << "'>";
+                               } else {
+                                       // add location information and throw again.
+                                       e.par_id = id();
+                                       e.pos = i;
+                                       throw(e);
+                               }
+                       }
+               }
 
                // Set the encoding to that returned from simpleTeXSpecialChars (see
                // comment for encoding member in OutputParams.h)
@@ -2069,54 +2074,11 @@ bool Paragraph::latex(Buffer const & buf,
                                          runparams.moving_arg);
        }
 
-       LYXERR(Debug::LATEX) << "SimpleTeXOnePar...done " << this << endl;
+       LYXERR(Debug::LATEX, "SimpleTeXOnePar...done " << this);
        return return_value;
 }
 
 
-namespace {
-
-enum PAR_TAG {
-       PAR_NONE=0,
-       TT = 1,
-       SF = 2,
-       BF = 4,
-       IT = 8,
-       SL = 16,
-       EM = 32
-};
-
-
-string tag_name(PAR_TAG const & pt) {
-       switch (pt) {
-       case PAR_NONE: return "!-- --";
-       case TT: return "tt";
-       case SF: return "sf";
-       case BF: return "bf";
-       case IT: return "it";
-       case SL: return "sl";
-       case EM: return "em";
-       }
-       return "";
-}
-
-
-inline
-void operator|=(PAR_TAG & p1, PAR_TAG const & p2)
-{
-       p1 = static_cast<PAR_TAG>(p1 | p2);
-}
-
-
-inline
-void reset(PAR_TAG & p1, PAR_TAG const & p2)
-{
-       p1 = static_cast<PAR_TAG>(p1 & ~p2);
-}
-
-} // anon
-
-
 bool Paragraph::emptyTag() const
 {
        for (pos_type i = 0; i < size(); ++i) {
@@ -2133,7 +2095,7 @@ bool Paragraph::emptyTag() const
                                return false;
                        }
                } else {
-                       value_type c = getChar(i);
+                       char_type c = d->text_[i];
                        if (c != ' ' && c != '\t')
                                return false;
                }
@@ -2149,8 +2111,9 @@ string Paragraph::getID(Buffer const & buf, OutputParams const & runparams) cons
                        Inset const * inset = getInset(i);
                        InsetCode lyx_code = inset->lyxCode();
                        if (lyx_code == LABEL_CODE) {
-                               string const id = static_cast<InsetCommand const *>(inset)->getContents();
-                               return "id='" + to_utf8(sgml::cleanID(buf, runparams, from_utf8(id))) + "'";
+                               InsetLabel const * const il = static_cast<InsetLabel const *>(inset);
+                               docstring const & id = il->getParam("name");
+                               return "id='" + to_utf8(sgml::cleanID(buf, runparams, id)) + "'";
                        }
                }
 
@@ -2167,7 +2130,7 @@ pos_type Paragraph::getFirstWord(Buffer const & buf, odocstream & os, OutputPara
                        Inset const * inset = getInset(i);
                        inset->docbook(buf, os, runparams);
                } else {
-                       value_type c = getChar(i);
+                       char_type c = d->text_[i];
                        if (c == ' ')
                                break;
                        os << sgml::escapeChar(c);
@@ -2177,13 +2140,13 @@ pos_type Paragraph::getFirstWord(Buffer const & buf, odocstream & os, OutputPara
 }
 
 
-bool Paragraph::onlyText(Buffer const & buf, Font const & outerfont, pos_type initial) const
+bool Paragraph::Private::onlyText(Buffer const & buf, Font const & outerfont, pos_type initial) const
 {
        Font font_old;
-
-       for (pos_type i = initial; i < size(); ++i) {
-               Font font = getFont(buf.params(), i, outerfont);
-               if (isInset(i))
+       pos_type size = text_.size();
+       for (pos_type i = initial; i < size; ++i) {
+               Font font = owner_->getFont(buf.params(), i, outerfont);
+               if (text_[i] == META_INSET)
                        return false;
                if (i != initial && font != font_old)
                        return false;
@@ -2203,10 +2166,10 @@ void Paragraph::simpleDocBookOnePar(Buffer const & buf,
        bool emph_flag = false;
 
        LayoutPtr const & style = layout();
-       Font font_old =
+       FontInfo font_old =
                style->labeltype == LABEL_MANUAL ? style->labelfont : style->font;
 
-       if (style->pass_thru && !onlyText(buf, outerfont, initial))
+       if (style->pass_thru && !d->onlyText(buf, outerfont, initial))
                os << "]]>";
 
        // parsing main loop
@@ -2214,8 +2177,8 @@ void Paragraph::simpleDocBookOnePar(Buffer const & buf,
                Font font = getFont(buf.params(), i, outerfont);
 
                // handle <emphasis> tag
-               if (font_old.emph() != font.emph()) {
-                       if (font.emph() == Font::ON) {
+               if (font_old.emph() != font.fontInfo().emph()) {
+                       if (font.fontInfo().emph() == FONT_ON) {
                                os << "<emphasis>";
                                emph_flag = true;
                        } else if (i != initial) {
@@ -2228,14 +2191,14 @@ void Paragraph::simpleDocBookOnePar(Buffer const & buf,
                        Inset const * inset = getInset(i);
                        inset->docbook(buf, os, runparams);
                } else {
-                       value_type c = getChar(i);
+                       char_type c = d->text_[i];
 
                        if (style->pass_thru)
                                os.put(c);
                        else
                                os << sgml::escapeChar(c);
                }
-               font_old = font;
+               font_old = font.fontInfo();
        }
 
        if (emph_flag) {
@@ -2244,30 +2207,28 @@ void Paragraph::simpleDocBookOnePar(Buffer const & buf,
 
        if (style->free_spacing)
                os << '\n';
-       if (style->pass_thru && !onlyText(buf, outerfont, initial))
+       if (style->pass_thru && !d->onlyText(buf, outerfont, initial))
                os << "<![CDATA[";
 }
 
 
 bool Paragraph::isHfill(pos_type pos) const
 {
-       return isInset(pos)
-               && getInset(pos)->lyxCode() == HFILL_CODE;
+       return isInset(pos) && getInset(pos)->lyxCode() == HFILL_CODE;
 }
 
 
 bool Paragraph::isNewline(pos_type pos) const
 {
-       return isInset(pos)
-               && getInset(pos)->lyxCode() == NEWLINE_CODE;
+       return isInset(pos) && getInset(pos)->lyxCode() == NEWLINE_CODE;
 }
 
 
 bool Paragraph::isLineSeparator(pos_type pos) const
 {
-       value_type const c = getChar(pos);
+       char_type const c = d->text_[pos];
        return isLineSeparatorChar(c)
-               || (c == Paragraph::META_INSET && getInset(pos) &&
+               || (c == META_INSET && getInset(pos) &&
                getInset(pos)->isLineSeparator());
 }
 
@@ -2277,10 +2238,8 @@ bool Paragraph::isLetter(pos_type pos) const
 {
        if (isInset(pos))
                return getInset(pos)->isLetter();
-       else {
-               value_type const c = getChar(pos);
-               return isLetterChar(c) || isDigit(c);
-       }
+       char_type const c = d->text_[pos];
+       return isLetterChar(c) || isDigit(c);
 }
 
 
@@ -2350,7 +2309,7 @@ docstring const Paragraph::asString(Buffer const & buffer,
                os << params().labelString() << ' ';
 
        for (pos_type i = beg; i < end; ++i) {
-               value_type const c = getChar(i);
+               char_type const c = d->text_[i];
                if (isPrintable(c))
                        os.put(c);
                else if (c == META_INSET)
@@ -2393,8 +2352,7 @@ Inset * Paragraph::inInset() const
 
 InsetCode Paragraph::ownerCode() const
 {
-       return d->inset_owner_ ?
-               d->inset_owner_->lyxCode() : NO_CODE;
+       return d->inset_owner_ ? d->inset_owner_->lyxCode() : NO_CODE;
 }
 
 
@@ -2414,10 +2372,7 @@ bool Paragraph::isFreeSpacing() const
 {
        if (layout()->free_spacing)
                return true;
-
-       // for now we just need this, later should we need this in some
-       // other way we can always add a function to Inset too.
-       return ownerCode() == ERT_CODE || ownerCode() == LISTINGS_CODE;
+       return d->inset_owner_ && d->inset_owner_->isFreeSpacing();
 }
 
 
@@ -2425,7 +2380,7 @@ bool Paragraph::allowEmpty() const
 {
        if (layout()->keepempty)
                return true;
-       return ownerCode() == ERT_CODE || ownerCode() == LISTINGS_CODE;
+       return d->inset_owner_ && d->inset_owner_->allowEmpty();
 }
 
 
@@ -2434,11 +2389,11 @@ char_type Paragraph::transformChar(char_type c, pos_type pos) const
        if (!Encodings::is_arabic(c))
                return c;
 
-       value_type prev_char = ' ';
-       value_type next_char = ' ';
+       char_type prev_char = ' ';
+       char_type next_char = ' ';
 
        for (pos_type i = pos - 1; i >= 0; --i) {
-               value_type const par_char = getChar(i);
+               char_type const par_char = d->text_[i];
                if (!Encodings::isComposeChar_arabic(par_char)) {
                        prev_char = par_char;
                        break;
@@ -2446,7 +2401,7 @@ char_type Paragraph::transformChar(char_type c, pos_type pos) const
        }
 
        for (pos_type i = pos + 1, end = size(); i < end; ++i) {
-               value_type const par_char = getChar(i);
+               char_type const par_char = d->text_[i];
                if (!Encodings::isComposeChar_arabic(par_char)) {
                        next_char = par_char;
                        break;
@@ -2481,7 +2436,7 @@ int Paragraph::checkBiblio(bool track_changes)
 
        bool hasbibitem = !d->insetlist_.empty()
                // Insist on it being in pos 0
-               && getChar(0) == Paragraph::META_INSET
+               && d->text_[0] == META_INSET
                && d->insetlist_.begin()->inset->lyxCode() == BIBITEM_CODE;
 
        docstring oldkey;
@@ -2587,16 +2542,132 @@ Inset const * Paragraph::getInset(pos_type pos) const
 }
 
 
-int Paragraph::numberOfOptArgs() const
+void Paragraph::changeCase(BufferParams const & bparams, pos_type pos,
+               pos_type right, TextCase action)
 {
-       int num = 0;
-       InsetList::const_iterator it = insetList().begin();
-       InsetList::const_iterator end = insetList().end();
-       for (; it != end ; ++it) {
-               if (it->inset->lyxCode() == OPTARG_CODE)
-                       ++num;
+       // process sequences of modified characters; in change
+       // tracking mode, this approach results in much better
+       // usability than changing case on a char-by-char basis
+       docstring changes;
+
+       bool const trackChanges = bparams.trackChanges;
+
+       bool capitalize = true;
+
+       for (; pos < right; ++pos) {
+               char_type oldChar = d->text_[pos];
+               char_type newChar = oldChar;
+
+               // ignore insets and don't play with deleted text!
+               if (oldChar != META_INSET && !isDeleted(pos)) {
+                       switch (action) {
+                               case text_lowercase:
+                                       newChar = lowercase(oldChar);
+                                       break;
+                               case text_capitalization:
+                                       if (capitalize) {
+                                               newChar = uppercase(oldChar);
+                                               capitalize = false;
+                                       }
+                                       break;
+                               case text_uppercase:
+                                       newChar = uppercase(oldChar);
+                                       break;
+                       }
+               }
+
+               if (!isLetter(pos) || isDeleted(pos)) {
+                       // permit capitalization again
+                       capitalize = true;
+               }
+
+               if (oldChar != newChar)
+                       changes += newChar;
+
+               if (oldChar == newChar || pos == right - 1) {
+                       if (oldChar != newChar) {
+                               // step behind the changing area
+                               pos++;
+                       }
+                       int erasePos = pos - changes.size();
+                       for (size_t i = 0; i < changes.size(); i++) {
+                               insertChar(pos, changes[i],
+                                       getFontSettings(bparams,
+                                       erasePos),
+                                       trackChanges);
+                               if (!eraseChar(erasePos, trackChanges)) {
+                                       ++erasePos;
+                                       ++pos; // advance
+                                       ++right; // expand selection
+                               }
+                       }
+                       changes.clear();
+               }
        }
-       return num;
+}
+
+
+bool Paragraph::find(docstring const & str, bool cs, bool mw,
+               pos_type pos, bool del) const
+{
+       int const strsize = str.length();
+       int i = 0;
+       pos_type const parsize = d->text_.size();
+       for (i = 0; pos + i < parsize; ++i) {
+               if (i >= strsize)
+                       break;
+               if (cs && str[i] != d->text_[pos + i])
+                       break;
+               if (!cs && uppercase(str[i]) != uppercase(d->text_[pos + i]))
+                       break;
+               if (!del && isDeleted(pos + i))
+                       break;
+       }
+
+       if (i != strsize)
+               return false;
+
+       // if necessary, check whether string matches word
+       if (mw) {
+               if (pos > 0 && isLetter(pos - 1))
+                       return false;
+               if (pos + strsize < parsize
+                       && isLetter(pos + strsize))
+                       return false;
+       }
+
+       return true;
+}
+
+
+char_type Paragraph::getChar(pos_type pos) const
+{
+       return d->text_[pos];
+}
+
+
+pos_type Paragraph::size() const
+{
+       return d->text_.size();
+}
+
+
+bool Paragraph::empty() const
+{
+       return d->text_.empty();
+}
+
+
+bool Paragraph::isInset(pos_type pos) const
+{
+       return d->text_[pos] == META_INSET;
+}
+
+
+bool Paragraph::isSeparator(pos_type pos) const
+{
+       //FIXME: Are we sure this can be the only separator?
+       return d->text_[pos] == ' ';
 }