]> git.lyx.org Git - lyx.git/blobdiff - src/Paragraph.cpp
Added Liviu Andronic, and modified generate_contributions.py to match what was in...
[lyx.git] / src / Paragraph.cpp
index 498c5c1c2c1eda23071bf0a826c66b300e612a86..f51ebc2501651975ea79f7c4f9231ee68f2003ef 100644 (file)
@@ -19,6 +19,7 @@
 
 #include "Paragraph.h"
 
+#include "LayoutFile.h"
 #include "Buffer.h"
 #include "BufferParams.h"
 #include "Changes.h"
 #include "sgml.h"
 #include "TextClass.h"
 #include "TexRow.h"
+#include "Text.h"
 #include "VSpace.h"
+#include "WordList.h"
 
 #include "frontends/alert.h"
-#include "frontends/FontMetrics.h"
 
 #include "insets/InsetBibitem.h"
 #include "insets/InsetLabel.h"
 
+#include "support/lassert.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/unicode.h"
 
 #include <sstream>
 #include <vector>
@@ -78,9 +80,11 @@ class Paragraph::Private
 {
 public:
        ///
-       Private(Paragraph * owner);
+       Private(Paragraph * owner, Layout const & layout);
        /// "Copy constructor"
        Private(Private const &, Paragraph * owner);
+       /// Copy constructor from \p beg  to \p end
+       Private(Private const &, Paragraph * owner, pos_type beg, pos_type end);
 
        ///
        void insertChar(pos_type pos, char_type c, Change const & change);
@@ -115,7 +119,7 @@ public:
                            bool) const;
 
        ///
-       void latexInset(Buffer const &, BufferParams const &,
+       void latexInset(BufferParams const &,
                                   odocstream &,
                                   TexRow & texrow, OutputParams &,
                                   Font & running_font,
@@ -189,15 +193,18 @@ public:
        ///
        InsetList insetlist_;
 
-       ///
-       LayoutPtr layout_;
-
        /// end of label
        pos_type begin_of_body_;
 
        typedef docstring TextContainer;
        ///
        TextContainer text_;
+       
+       typedef std::set<docstring> Words;
+       ///
+       Words words_;
+       ///
+       Layout const * layout_;
 };
 
 
@@ -224,8 +231,8 @@ size_t const phrases_nr = sizeof(special_phrases)/sizeof(special_phrase);
 } // namespace anon
 
 
-Paragraph::Private::Private(Paragraph * owner)
-       : owner_(owner), inset_owner_(0), begin_of_body_(0)
+Paragraph::Private::Private(Paragraph * owner, Layout const & layout)
+       : owner_(owner), inset_owner_(0), begin_of_body_(0), layout_(&layout)
 {
        id_ = paragraph_id++;
        text_.reserve(100);
@@ -235,30 +242,58 @@ Paragraph::Private::Private(Paragraph * owner)
 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_), text_(p.text_)
+         begin_of_body_(p.begin_of_body_), text_(p.text_), words_(p.words_),
+         layout_(p.layout_)
 {
        id_ = paragraph_id++;
 }
 
 
+Paragraph::Private::Private(Private const & p, Paragraph * owner,
+       pos_type beg, pos_type end)
+       : owner_(owner), inset_owner_(p.inset_owner_),
+         params_(p.params_), changes_(p.changes_),
+         insetlist_(p.insetlist_, beg, end),
+         begin_of_body_(p.begin_of_body_), words_(p.words_),
+         layout_(p.layout_)
+{
+       id_ = paragraph_id++;
+       if (beg >= pos_type(p.text_.size()))
+               return;
+       text_ = p.text_.substr(beg, end - beg);
+
+       FontList::const_iterator fcit = fontlist_.begin();
+       FontList::const_iterator fend = fontlist_.end();
+       for (; fcit != fend; ++fcit) {
+               if (fcit->pos() < beg)
+                       continue;
+               if (fcit->pos() >= end) {
+                       // Add last entry in the fontlist_.
+                       fontlist_.set(text_.size() - 1, fcit->font());
+                       break;
+               }
+               // Add a new entry in the fontlist_.
+               fontlist_.set(fcit->pos() - beg, fcit->font());
+       }
+}
+
+
 bool Paragraph::isChanged(pos_type start, pos_type end) const
 {
-       BOOST_ASSERT(start >= 0 && start <= size());
-       BOOST_ASSERT(end > start && end <= size() + 1);
+       LASSERT(start >= 0 && start <= size(), /**/);
+       LASSERT(end > start && end <= size() + 1, /**/);
 
        return d->changes_.isChanged(start, end);
 }
 
 
-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;
 }
 
@@ -282,8 +317,8 @@ void Paragraph::setChange(Change const & change)
 
        if (change.type != Change::DELETED) {
                for (pos_type pos = 0; pos < size(); ++pos) {
-                       if (isInset(pos))
-                               getInset(pos)->setChange(change);
+                       if (Inset * inset = getInset(pos))
+                               inset->setChange(change);
                }
        }
 }
@@ -291,23 +326,19 @@ void Paragraph::setChange(Change const & change)
 
 void Paragraph::setChange(pos_type pos, Change const & change)
 {
-       BOOST_ASSERT(pos >= 0 && pos <= size());
-
+       LASSERT(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)) {
-               getInset(pos)->setChange(change);
-       }
+       if (change.type != Change::DELETED && pos < size())
+                       if (Inset * inset = getInset(pos))
+                               inset->setChange(change);
 }
 
 
 Change const & Paragraph::lookupChange(pos_type pos) const
 {
-       BOOST_ASSERT(pos >= 0 && pos <= size());
-
+       LASSERT(pos >= 0 && pos <= size(), /**/);
        return d->changes_.lookup(pos);
 }
 
@@ -315,24 +346,22 @@ Change const & Paragraph::lookupChange(pos_type pos) const
 void Paragraph::acceptChanges(BufferParams const & bparams, pos_type start,
                pos_type end)
 {
-       BOOST_ASSERT(start >= 0 && start <= size());
-       BOOST_ASSERT(end > start && end <= size() + 1);
+       LASSERT(start >= 0 && start <= size(), /**/);
+       LASSERT(end > start && end <= size() + 1, /**/);
 
        for (pos_type pos = start; pos < end; ++pos) {
                switch (lookupChange(pos).type) {
                        case Change::UNCHANGED:
                                // accept changes in nested inset
-                               if (pos < size() && isInset(pos))
-                                       getInset(pos)->acceptChanges(bparams);
-
+                               if (Inset * inset = getInset(pos))
+                                       inset->acceptChanges(bparams);
                                break;
 
                        case Change::INSERTED:
                                d->changes_.set(Change(Change::UNCHANGED), pos);
                                // also accept changes in nested inset
-                               if (pos < size() && isInset(pos)) {
-                                       getInset(pos)->acceptChanges(bparams);
-                               }
+                               if (Inset * inset = getInset(pos))
+                                       inset->acceptChanges(bparams);
                                break;
 
                        case Change::DELETED:
@@ -353,16 +382,15 @@ void Paragraph::acceptChanges(BufferParams const & bparams, pos_type start,
 void Paragraph::rejectChanges(BufferParams const & bparams,
                pos_type start, pos_type end)
 {
-       BOOST_ASSERT(start >= 0 && start <= size());
-       BOOST_ASSERT(end > start && end <= size() + 1);
+       LASSERT(start >= 0 && start <= size(), /**/);
+       LASSERT(end > start && end <= size() + 1, /**/);
 
        for (pos_type pos = start; pos < end; ++pos) {
                switch (lookupChange(pos).type) {
                        case Change::UNCHANGED:
                                // reject changes in nested inset
-                               if (pos < size() && isInset(pos)) {
-                                       getInset(pos)->rejectChanges(bparams);
-                               }
+                               if (Inset * inset = getInset(pos))
+                                               inset->rejectChanges(bparams);
                                break;
 
                        case Change::INSERTED:
@@ -390,7 +418,7 @@ void Paragraph::rejectChanges(BufferParams const & bparams,
 void Paragraph::Private::insertChar(pos_type pos, char_type c,
                Change const & change)
 {
-       BOOST_ASSERT(pos >= 0 && pos <= int(text_.size()));
+       LASSERT(pos >= 0 && pos <= int(text_.size()), /**/);
 
        // track change
        changes_.insert(change, pos);
@@ -416,11 +444,11 @@ void Paragraph::Private::insertChar(pos_type pos, char_type c,
 void Paragraph::insertInset(pos_type pos, Inset * inset,
                                   Change const & change)
 {
-       BOOST_ASSERT(inset);
-       BOOST_ASSERT(pos >= 0 && pos <= size());
+       LASSERT(inset, /**/);
+       LASSERT(pos >= 0 && pos <= size(), /**/);
 
        d->insertChar(pos, META_INSET, change);
-       BOOST_ASSERT(d->text_[pos] == META_INSET);
+       LASSERT(d->text_[pos] == META_INSET, /**/);
 
        // Add a new entry in the insetlist_.
        d->insetlist_.insert(inset, pos);
@@ -429,7 +457,7 @@ void Paragraph::insertInset(pos_type pos, Inset * inset,
 
 bool Paragraph::eraseChar(pos_type pos, bool trackChanges)
 {
-       BOOST_ASSERT(pos >= 0 && pos <= size());
+       LASSERT(pos >= 0 && pos <= size(), /**/);
 
        // keep the logic here in sync with the logic of isMergedOnEndOfParDeletion()
 
@@ -478,8 +506,8 @@ bool Paragraph::eraseChar(pos_type pos, bool trackChanges)
 
 int Paragraph::eraseChars(pos_type start, pos_type end, bool trackChanges)
 {
-       BOOST_ASSERT(start >= 0 && start <= size());
-       BOOST_ASSERT(end >= start && end <= size() + 1);
+       LASSERT(start >= 0 && start <= size(), /**/);
+       LASSERT(end >= start && end <= size() + 1, /**/);
 
        pos_type i = start;
        for (pos_type count = end - start; count; --count) {
@@ -502,7 +530,12 @@ int Paragraph::Private::latexSurrogatePair(odocstream & os, char_type c,
        // Is this correct WRT change tracking?
        docstring const latex1 = encoding.latexChar(next);
        docstring const latex2 = encoding.latexChar(c);
-       os << latex1 << '{' << latex2 << '}';
+       if (docstring(1, next) == latex1) {
+               // the encoding supports the combination
+               os << latex2 << latex1;
+               return latex1.length() + latex2.length();
+       } else
+               os << latex1 << '{' << latex2 << '}';
        return latex1.length() + latex2.length() + 2;
 }
 
@@ -564,9 +597,10 @@ int Paragraph::Private::writeScriptChars(odocstream & os,
 
        // 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>}".
+       // latex encoding) or its latex translation has been forced, 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
@@ -575,8 +609,16 @@ int Paragraph::Private::writeScriptChars(odocstream & os,
        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 pos = 0;
+       int length = brace2;
+       bool closing_brace = true;
+       if (script == "textgreek" && encoding.latexName() == "iso-8859-7") {
+               // Correct encoding is being used, so we can avoid \textgreek.
+               pos = brace1 + 1;
+               length -= pos;
+               closing_brace = false;
+       }
+       os << ltx.substr(pos, length);
        int size = text_.size();
        while (i + 1 < size) {
                char_type const next = text_[i + 1];
@@ -610,8 +652,10 @@ int Paragraph::Private::writeScriptChars(odocstream & os,
                length += len;
                ++i;
        }
-       os << '}';
-       ++length;
+       if (closing_brace) {
+               os << '}';
+               ++length;
+       }
        return length;
 }
 
@@ -636,7 +680,7 @@ bool Paragraph::Private::isTextAt(string const & str, pos_type pos) const
 }
 
 
-void Paragraph::Private::latexInset(Buffer const & buf,
+void Paragraph::Private::latexInset(
                                             BufferParams const & bparams,
                                             odocstream & os,
                                             TexRow & texrow,
@@ -651,10 +695,10 @@ void Paragraph::Private::latexInset(Buffer const & buf,
                                             unsigned int & column)
 {
        Inset * inset = owner_->getInset(i);
-       BOOST_ASSERT(inset);
+       LASSERT(inset, /**/);
 
        if (style.pass_thru) {
-               inset->plaintext(buf, os, runparams);
+               inset->plaintext(os, runparams);
                return;
        }
 
@@ -747,7 +791,16 @@ void Paragraph::Private::latexInset(Buffer const & buf,
                }
        }
 
-       int tmp = inset->latex(buf, os, runparams);
+       int tmp;
+
+       try {
+               tmp = inset->latex(os, runparams);
+       } catch (EncodingException & e) {
+               // add location information and throw again.
+               e.par_id = id_;
+               e.pos = i;
+               throw(e);
+       }
 
        if (close) {
        if (running_font.language()->lang() == "farsi")
@@ -791,6 +844,8 @@ void Paragraph::Private::latexSpecialChar(
        }
 
        if (runparams.verbatim) {
+               // FIXME UNICODE: This can fail if c cannot
+               // be encoded in the current encoding.
                os.put(c);
                return;
        }
@@ -863,7 +918,6 @@ void Paragraph::Private::latexSpecialChar(
                break;
 
        default:
-
                // LyX, LaTeX etc.
                if (latexSpecialPhrase(os, i, column, runparams))
                        return;
@@ -912,11 +966,8 @@ bool Paragraph::Private::latexSpecialT1(char_type const c, odocstream & os,
                // but we should avoid ligatures
                if (i + 1 >= int(text_.size()) || text_[i + 1] != c)
                        return true;
-               os << "\\,{}";
-               column += 3;
-               // Alternative code:
-               //os << "\\textcompwordmark{}";
-               //column += 19;
+               os << "\\textcompwordmark{}";
+               column += 19;
                return true;
        case '|':
                os.put(c);
@@ -932,37 +983,19 @@ bool Paragraph::Private::latexSpecialTypewriter(char_type const c, odocstream &
 {
        switch (c) {
        case '-':
+               // within \ttfamily, "--" is merged to "-" (no endash)
+               // so we avoid this rather irritating ligature
                if (i + 1 < int(text_.size()) && text_[i + 1] == '-') {
-                       // "--" in Typewriter mode -> "-{}-"
                        os << "-{}";
                        column += 2;
                } else
                        os << '-';
                return true;
 
-       // I assume this is hack treating typewriter as verbatim
-       // FIXME UNICODE: This can fail if c cannot be encoded
-       // in the current encoding.
-
-       case '\0':
-               return true;
-
-       // Those characters are not directly supported.
-       case '\\':
-       case '\"':
-       case '$': case '&':
-       case '%': case '#': case '{':
-       case '}': case '_':
-       case '~':
-       case '^':
-       case '*': case '[':
-       case ' ':
-               return false;
-
+       // everything else has to be checked separately
+       // (depending on the encoding)
        default:
-               // With Typewriter font, these characters exist.
-               os.put(c);
-               return true;
+               return false;
        }
 }
 
@@ -999,13 +1032,6 @@ 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);
@@ -1045,8 +1071,12 @@ void Paragraph::Private::validate(LaTeXFeatures & features,
 //
 /////////////////////////////////////////////////////////////////////
 
-Paragraph::Paragraph()
-       : d(new Paragraph::Private(this))
+namespace {
+       Layout const emptyParagraphLayout;
+}
+
+Paragraph::Paragraph() 
+       : d(new Paragraph::Private(this, emptyParagraphLayout))
 {
        itemdepth = 0;
        d->params_.clear();
@@ -1057,6 +1087,15 @@ Paragraph::Paragraph(Paragraph const & par)
        : itemdepth(par.itemdepth),
        d(new Paragraph::Private(*par.d, this))
 {
+       registerWords();
+}
+
+
+Paragraph::Paragraph(Paragraph const & par, pos_type beg, pos_type end)
+       : itemdepth(par.itemdepth),
+       d(new Paragraph::Private(*par.d, this, beg, end))
+{
+       registerWords();
 }
 
 
@@ -1066,8 +1105,10 @@ Paragraph & Paragraph::operator=(Paragraph const & par)
        if (&par != this) {
                itemdepth = par.itemdepth;
 
+               deregisterWords();
                delete d;
                d = new Private(*par.d, this);
+               registerWords();
        }
        return *this;
 }
@@ -1075,23 +1116,23 @@ Paragraph & Paragraph::operator=(Paragraph const & par)
 
 Paragraph::~Paragraph()
 {
+       deregisterWords();
        delete d;
 }
 
 
-void Paragraph::write(Buffer const & buf, ostream & os,
-                         BufferParams const & bparams,
-                         depth_type & dth) const
+void Paragraph::write(ostream & os, BufferParams const & bparams,
+       depth_type & dth) const
 {
        // The beginning or end of a deeper (i.e. nested) area?
-       if (dth != params().depth()) {
-               if (params().depth() > dth) {
-                       while (params().depth() > dth) {
+       if (dth != d->params_.depth()) {
+               if (d->params_.depth() > dth) {
+                       while (d->params_.depth() > dth) {
                                os << "\n\\begin_deeper";
                                ++dth;
                        }
                } else {
-                       while (params().depth() < dth) {
+                       while (d->params_.depth() < dth) {
                                os << "\n\\end_deeper";
                                --dth;
                        }
@@ -1099,9 +1140,9 @@ void Paragraph::write(Buffer const & buf, ostream & os,
        }
 
        // First write the layout
-       os << "\n\\begin_layout " << to_utf8(layout()->name()) << '\n';
+       os << "\n\\begin_layout " << to_utf8(d->layout_->name()) << '\n';
 
-       params().write(os);
+       d->params_.write(os);
 
        Font font1(inherit_font, bparams.language);
 
@@ -1128,24 +1169,22 @@ void Paragraph::write(Buffer const & buf, ostream & os,
                char_type const c = d->text_[i];
                switch (c) {
                case META_INSET:
-               {
-                       Inset const * inset = getInset(i);
-                       if (inset)
+                       if (Inset const * inset = getInset(i)) {
                                if (inset->directWrite()) {
                                        // international char, let it write
                                        // code directly so it's shorter in
                                        // the file
-                                       inset->write(buf, os);
+                                       inset->write(os);
                                } else {
                                        if (i)
                                                os << '\n';
                                        os << "\\begin_inset ";
-                                       inset->write(buf, os);
+                                       inset->write(os);
                                        os << "\n\\end_inset\n\n";
                                        column = 0;
                                }
-               }
-               break;
+                       }
+                       break;
                case '\\':
                        os << "\n\\backslash\n";
                        column = 0;
@@ -1165,13 +1204,10 @@ 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') {
-                               vector<char> tmp = ucs4_to_utf8(c);
-                               tmp.push_back('\0');
-                               os << &tmp[0];
-                       } else
-                               lyxerr << "ERROR (Paragraph::writeFile):"
-                                       " NULL char in structure." << endl;
+                       if (c != '\0')
+                               os << to_utf8(docstring(1, c));
+                       else
+                               LYXERR0("NUL char in structure.");
                        ++column;
                        break;
                }
@@ -1183,7 +1219,7 @@ void Paragraph::write(Buffer const & buf, ostream & os,
 
 void Paragraph::validate(LaTeXFeatures & features) const
 {
-       d->validate(features, *layout());
+       d->validate(features, *d->layout_);
 }
 
 
@@ -1220,7 +1256,7 @@ void Paragraph::appendString(docstring const & s, Font const & font,
        d->text_.append(s);
 
        // FIXME: Optimize this!
-       for (pos_type i = 0; i != end; ++i) {
+       for (pos_type i = oldsize; i != newsize; ++i) {
                // track change
                d->changes_.insert(change, i);
        }
@@ -1281,8 +1317,8 @@ Font const Paragraph::getFontSettings(BufferParams const & bparams,
                                         pos_type pos) const
 {
        if (pos > size()) {
-               lyxerr << " pos: " << pos << " size: " << size() << endl;
-               BOOST_ASSERT(pos <= size());
+               LYXERR0("pos: " << pos << " size: " << size());
+               LASSERT(pos <= size(), /**/);
        }
 
        FontList::const_iterator cit = d->fontlist_.fontIterator(pos);
@@ -1298,7 +1334,7 @@ Font const Paragraph::getFontSettings(BufferParams const & bparams,
 
 FontSpan Paragraph::fontSpan(pos_type pos) const
 {
-       BOOST_ASSERT(pos <= size());
+       LASSERT(pos <= size(), /**/);
        pos_type start = 0;
 
        FontList::const_iterator cit = d->fontlist_.begin();
@@ -1317,8 +1353,7 @@ FontSpan Paragraph::fontSpan(pos_type pos) const
        }
 
        // This should not happen, but if so, we take no chances.
-       //lyxerr << "Paragraph::getEndPosOfFontSpan: This should not happen!"
-       //      << endl;
+       // LYXERR0("Paragraph::getEndPosOfFontSpan: This should not happen!");
        return FontSpan(pos, pos);
 }
 
@@ -1341,7 +1376,7 @@ Font const Paragraph::getFirstFontSettings(BufferParams const & bparams) const
 Font const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
                                 Font const & outerfont) const
 {
-       BOOST_ASSERT(pos >= 0);
+       LASSERT(pos >= 0, /**/);
 
        Font font = getFontSettings(bparams, pos);
 
@@ -1361,7 +1396,7 @@ Font const Paragraph::getFont(BufferParams const & bparams, pos_type pos,
 Font const Paragraph::getLabelFont
        (BufferParams const & bparams, Font const & outerfont) const
 {
-       FontInfo tmpfont = layout()->labelfont;
+       FontInfo tmpfont = d->layout_->labelfont;
        tmpfont.realize(outerfont.fontInfo());
        tmpfont.realize(bparams.getFont().fontInfo());
        return Font(tmpfont, getParLanguage(bparams));
@@ -1371,7 +1406,7 @@ Font const Paragraph::getLabelFont
 Font const Paragraph::getLayoutFont
        (BufferParams const & bparams, Font const & outerfont) const
 {
-       FontInfo tmpfont = layout()->font;
+       FontInfo tmpfont = d->layout_->font;
        tmpfont.realize(outerfont.fontInfo());
        tmpfont.realize(bparams.getFont().fontInfo());
        return Font(tmpfont, getParLanguage(bparams));
@@ -1386,8 +1421,7 @@ FontSize Paragraph::highestFontInRange
 }
 
 
-char_type
-Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
+char_type Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
 {
        char_type c = d->text_[pos];
        if (!lyxrc.rtl_support)
@@ -1422,14 +1456,13 @@ Paragraph::getUChar(BufferParams const & bparams, pos_type pos) const
        }
        if (uc != c && getFontSettings(bparams, pos).isRightToLeft())
                return uc;
-       else
-               return c;
+       return c;
 }
 
 
 void Paragraph::setFont(pos_type pos, Font const & font)
 {
-       BOOST_ASSERT(pos <= size());
+       LASSERT(pos <= size(), /**/);
 
        // First, reduce font against layout/label font
        // Update: The setCharFont() routine in text2.cpp already
@@ -1441,9 +1474,8 @@ void Paragraph::setFont(pos_type pos, Font const & font)
 
 void Paragraph::makeSameLayout(Paragraph const & par)
 {
-       layout(par.layout());
-       // move to pimpl?
-       d->params_ = par.params();
+       d->layout_ = par.d->layout_;
+       d->params_ = par.d->params_;
 }
 
 
@@ -1468,45 +1500,46 @@ bool Paragraph::stripLeadingSpaces(bool trackChanges)
 
 bool Paragraph::hasSameLayout(Paragraph const & par) const
 {
-       return par.layout() == layout() && d->params_.sameLayout(par.params());
+       return par.d->layout_ == d->layout_
+               && d->params_.sameLayout(par.d->params_);
 }
 
 
 depth_type Paragraph::getDepth() const
 {
-       return params().depth();
+       return d->params_.depth();
 }
 
 
 depth_type Paragraph::getMaxDepthAfter() const
 {
-       if (layout()->isEnvironment())
-               return params().depth() + 1;
+       if (d->layout_->isEnvironment())
+               return d->params_.depth() + 1;
        else
-               return params().depth();
+               return d->params_.depth();
 }
 
 
 char Paragraph::getAlign() const
 {
-       if (params().align() == LYX_ALIGN_LAYOUT)
-               return layout()->align;
+       if (d->params_.align() == LYX_ALIGN_LAYOUT)
+               return d->layout_->align;
        else
-               return params().align();
+               return d->params_.align();
 }
 
 
-docstring const & Paragraph::getLabelstring() const
+docstring const & Paragraph::labelString() const
 {
-       return params().labelString();
+       return d->params_.labelString();
 }
 
 
 // the next two functions are for the manual labels
 docstring const Paragraph::getLabelWidthString() const
 {
-       if (layout()->margintype == MARGIN_MANUAL)
-               return params().labelWidthString();
+       if (d->layout_->margintype == MARGIN_MANUAL)
+               return d->params_.labelWidthString();
        else
                return _("Senseless with this layout!");
 }
@@ -1514,7 +1547,7 @@ docstring const Paragraph::getLabelWidthString() const
 
 void Paragraph::setLabelWidthString(docstring const & s)
 {
-       params().labelWidthString(s);
+       d->params_.labelWidthString(s);
 }
 
 
@@ -1532,21 +1565,21 @@ docstring const Paragraph::translateIfPossible(docstring const & s,
 }
 
 
-docstring Paragraph::expandLabel(LayoutPtr const & layout,
+docstring Paragraph::expandLabel(Layout const & layout,
                BufferParams const & bparams, bool process_appendix) const
 {
-       TextClass const & tclass = bparams.getTextClass();
+       DocumentClass const & tclass = bparams.documentClass();
 
        docstring fmt;
-       if (process_appendix && params().appendix())
-               fmt = translateIfPossible(layout->labelstring_appendix(),
+       if (process_appendix && d->params_.appendix())
+               fmt = translateIfPossible(layout.labelstring_appendix(),
                        bparams);
        else
-               fmt = translateIfPossible(layout->labelstring(), bparams);
+               fmt = translateIfPossible(layout.labelstring(), bparams);
 
-       if (fmt.empty() && layout->labeltype == LABEL_COUNTER 
-           && !layout->counter.empty())
-               fmt = "\\the" + layout->counter;
+       if (fmt.empty() && layout.labeltype == LABEL_COUNTER 
+           && !layout.counter.empty())
+               fmt = "\\the" + layout.counter;
 
        // handle 'inherited level parts' in 'fmt',
        // i.e. the stuff between '@' in   '@Section@.\arabic{subsection}'
@@ -1568,15 +1601,15 @@ docstring Paragraph::expandLabel(LayoutPtr const & layout,
 }
 
 
-void Paragraph::applyLayout(LayoutPtr const & new_layout)
+void Paragraph::applyLayout(Layout const & new_layout)
 {
-       layout(new_layout);
-       LyXAlignment const oldAlign = params().align();
+       d->layout_ = &new_layout;
+       LyXAlignment const oldAlign = d->params_.align();
        
-       if (!(oldAlign & layout()->alignpossible)) {
+       if (!(oldAlign & d->layout_->alignpossible)) {
                frontend::Alert::warning(_("Alignment not permitted"), 
                        _("The new layout does not permit the alignment previously used.\nSetting to default."));
-               params().align(LYX_ALIGN_LAYOUT);
+               d->params_.align(LYX_ALIGN_LAYOUT);
        }
 }
 
@@ -1589,7 +1622,7 @@ pos_type Paragraph::beginOfBody() const
 
 void Paragraph::setBeginOfBody()
 {
-       if (layout()->labeltype != LABEL_MANUAL) {
+       if (d->layout_->labeltype != LABEL_MANUAL) {
                d->begin_of_body_ = 0;
                return;
        }
@@ -1622,9 +1655,30 @@ void Paragraph::setBeginOfBody()
 }
 
 
-bool Paragraph::forceDefaultParagraphs() const
+bool Paragraph::forcePlainLayout() const
 {
-       return inInset() && inInset()->forceDefaultParagraphs(0);
+       Inset const * const inset = inInset();
+       if (!inset)
+               return true;
+       return inset->forcePlainLayout();
+}
+
+
+bool Paragraph::allowParagraphCustomization() const
+{
+       Inset const * const inset = inInset();
+       if (!inset)
+               return true;
+       return inset->allowParagraphCustomization();
+}
+
+
+bool Paragraph::usePlainLayout() const
+{
+       Inset const * const inset = inInset();
+       if (!inset)
+               return false;
+       return inset->usePlainLayout();
 }
 
 
@@ -1809,8 +1863,7 @@ int Paragraph::Private::endTeXParParams(BufferParams const & bparams,
 
 
 // This one spits out the text of the paragraph
-bool Paragraph::latex(Buffer const & buf,
-                               BufferParams const & bparams,
+bool Paragraph::latex(BufferParams const & bparams,
                                Font const & outerfont,
                                odocstream & os, TexRow & texrow,
                                OutputParams const & runparams) const
@@ -1819,20 +1872,11 @@ bool Paragraph::latex(Buffer const & buf,
 
        bool return_value = false;
 
-       LayoutPtr style;
+       bool asdefault = forcePlainLayout();
 
-       // well we have to check if we are in an inset with unlimited
-       // length (all in one row) if that is true then we don't allow
-       // any special options in the paragraph and also we don't allow
-       // any environment other than the default layout of the text class
-       // to be valid!
-       bool asdefault = forceDefaultParagraphs();
-
-       if (asdefault) {
-               style = bparams.getTextClass().defaultLayout();
-       } else {
-               style = layout();
-       }
+       Layout const & style = asdefault ?
+               bparams.documentClass().plainLayout() :
+               *d->layout_;
 
        // Current base font for all inherited font changes, without any
        // change caused by an individual character, except for the language:
@@ -1867,7 +1911,7 @@ bool Paragraph::latex(Buffer const & buf,
 
        // if the paragraph is empty, the loop will not be entered at all
        if (empty()) {
-               if (style->isCommand()) {
+               if (style.isCommand()) {
                        os << '{';
                        ++column;
                }
@@ -1896,7 +1940,7 @@ bool Paragraph::latex(Buffer const & buf,
                                os << "}] ";
                                column +=3;
                        }
-                       if (style->isCommand()) {
+                       if (style.isCommand()) {
                                os << '{';
                                ++column;
                        }
@@ -1960,8 +2004,8 @@ bool Paragraph::latex(Buffer const & buf,
 
                // Switch file encoding if necessary (and allowed)
                if (!runparams.verbatim && 
-                   runparams.encoding->package() == Encoding::none &&
-                   font.language()->encoding()->package() == Encoding::none) {
+                   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) {
@@ -1996,13 +2040,13 @@ bool Paragraph::latex(Buffer const & buf,
                if (c == ' ') {
                        // FIXME: integrate this case in latexSpecialChar
                        // Do not print the separation of the optional argument
-                       // if style->pass_thru is false. This works because
+                       // if style.pass_thru is false. This works because
                        // latexSpecialChar ignores spaces if
-                       // style->pass_thru is false.
+                       // style.pass_thru is false.
                        if (i != body_pos - 1) {
                                if (d->simpleTeXBlanks(
                                                runparams, os, texrow,
-                                               i, column, font, *style)) {
+                                               i, column, font, style)) {
                                        // A surrogate pair was output. We
                                        // must not call latexSpecialChar
                                        // in this iteration, since it would output
@@ -2014,22 +2058,22 @@ bool Paragraph::latex(Buffer const & buf,
                }
 
                OutputParams rp = runparams;
-               rp.free_spacing = style->free_spacing;
+               rp.free_spacing = style.free_spacing;
                rp.local_font = &font;
-               rp.intitle = style->intitle;
+               rp.intitle = style.intitle;
 
                // 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 == META_INSET)
-                       d->latexInset(buf, bparams, os,
+                       d->latexInset(bparams, os,
                                        texrow, rp, running_font,
                                        basefont, outerfont, open_font,
-                                       runningChange, *style, i, column);
+                                       runningChange, style, i, column);
                else {
                        try {
                                d->latexSpecialChar(os, rp, running_font, runningChange,
-                                       *style, i, column);
+                                       style, i, column);
                        } catch (EncodingException & e) {
                                if (runparams.dryrun) {
                                        os << "<" << _("LyX Warning: ")
@@ -2045,7 +2089,7 @@ bool Paragraph::latex(Buffer const & buf,
                        }
                }
 
-               // Set the encoding to that returned from simpleTeXSpecialChars (see
+               // Set the encoding to that returned from latexSpecialChar (see
                // comment for encoding member in OutputParams.h)
                runparams.encoding = rp.encoding;
        }
@@ -2092,8 +2136,7 @@ bool Paragraph::latex(Buffer const & buf,
 bool Paragraph::emptyTag() const
 {
        for (pos_type i = 0; i < size(); ++i) {
-               if (isInset(i)) {
-                       Inset const * inset = getInset(i);
+               if (Inset const * inset = getInset(i)) {
                        InsetCode lyx_code = inset->lyxCode();
                        if (lyx_code != TOC_CODE &&
                            lyx_code != INCLUDE_CODE &&
@@ -2114,11 +2157,11 @@ bool Paragraph::emptyTag() const
 }
 
 
-string Paragraph::getID(Buffer const & buf, OutputParams const & runparams) const
+string Paragraph::getID(Buffer const & buf, OutputParams const & runparams)
+       const
 {
        for (pos_type i = 0; i < size(); ++i) {
-               if (isInset(i)) {
-                       Inset const * inset = getInset(i);
+               if (Inset const * inset = getInset(i)) {
                        InsetCode lyx_code = inset->lyxCode();
                        if (lyx_code == LABEL_CODE) {
                                InsetLabel const * const il = static_cast<InsetLabel const *>(inset);
@@ -2126,19 +2169,18 @@ string Paragraph::getID(Buffer const & buf, OutputParams const & runparams) cons
                                return "id='" + to_utf8(sgml::cleanID(buf, runparams, id)) + "'";
                        }
                }
-
        }
        return string();
 }
 
 
-pos_type Paragraph::getFirstWord(Buffer const & buf, odocstream & os, OutputParams const & runparams) const
+pos_type Paragraph::firstWord(odocstream & os, OutputParams const & runparams)
+       const
 {
        pos_type i;
        for (i = 0; i < size(); ++i) {
-               if (isInset(i)) {
-                       Inset const * inset = getInset(i);
-                       inset->docbook(buf, os, runparams);
+               if (Inset const * inset = getInset(i)) {
+                       inset->docbook(os, runparams);
                } else {
                        char_type c = d->text_[i];
                        if (c == ' ')
@@ -2175,11 +2217,11 @@ void Paragraph::simpleDocBookOnePar(Buffer const & buf,
 {
        bool emph_flag = false;
 
-       LayoutPtr const & style = layout();
+       Layout const & style = *d->layout_;
        FontInfo font_old =
-               style->labeltype == LABEL_MANUAL ? style->labelfont : style->font;
+               style.labeltype == LABEL_MANUAL ? style.labelfont : style.font;
 
-       if (style->pass_thru && !d->onlyText(buf, outerfont, initial))
+       if (style.pass_thru && !d->onlyText(buf, outerfont, initial))
                os << "]]>";
 
        // parsing main loop
@@ -2197,13 +2239,12 @@ void Paragraph::simpleDocBookOnePar(Buffer const & buf,
                        }
                }
 
-               if (isInset(i)) {
-                       Inset const * inset = getInset(i);
-                       inset->docbook(buf, os, runparams);
+               if (Inset const * inset = getInset(i)) {
+                       inset->docbook(os, runparams);
                } else {
                        char_type c = d->text_[i];
 
-                       if (style->pass_thru)
+                       if (style.pass_thru)
                                os.put(c);
                        else
                                os << sgml::escapeChar(c);
@@ -2215,45 +2256,63 @@ void Paragraph::simpleDocBookOnePar(Buffer const & buf,
                os << "</emphasis>";
        }
 
-       if (style->free_spacing)
+       if (style.free_spacing)
                os << '\n';
-       if (style->pass_thru && !d->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;
+       Inset const * inset = getInset(pos);
+       return inset && (inset->lyxCode() == SPACE_CODE &&
+                        inset->isStretchableSpace());
 }
 
 
 bool Paragraph::isNewline(pos_type pos) const
 {
-       return isInset(pos)
-               && getInset(pos)->lyxCode() == NEWLINE_CODE;
+       Inset const * inset = getInset(pos);
+       return inset && inset->lyxCode() == NEWLINE_CODE;
 }
 
 
 bool Paragraph::isLineSeparator(pos_type pos) const
 {
        char_type const c = d->text_[pos];
-       return isLineSeparatorChar(c)
-               || (c == META_INSET && getInset(pos) &&
-               getInset(pos)->isLineSeparator());
+       if (isLineSeparatorChar(c))
+               return true;
+       Inset const * inset = getInset(pos);
+       return inset && inset->isLineSeparator();
 }
 
 
 /// Used by the spellchecker
 bool Paragraph::isLetter(pos_type pos) const
 {
-       if (isInset(pos))
-               return getInset(pos)->isLetter();
-       else {
-               char_type const c = d->text_[pos];
-               return isLetterChar(c) || isDigit(c);
-       }
+       if (Inset const * inset = getInset(pos))
+               return inset->isLetter();
+       char_type const c = d->text_[pos];
+       return isLetterChar(c) || isDigit(c);
+}
+
+
+bool Paragraph::isChar(pos_type pos) const
+{
+       if (Inset const * inset = getInset(pos))
+               return inset->isChar();
+       char_type const c = d->text_[pos];
+       return !isLetterChar(c) && !isDigit(c) && !lyx::isSpace(c);
+}
+
+
+bool Paragraph::isSpace(pos_type pos) const
+{
+       if (Inset const * inset = getInset(pos))
+               return inset->isSpace();
+       char_type const c = d->text_[pos];
+       return lyx::isSpace(c);
 }
 
 
@@ -2305,29 +2364,27 @@ bool Paragraph::isMultiLingual(BufferParams const & bparams) const
 }
 
 
-// Convert the paragraph to a string.
-// Used for building the table of contents
-docstring const Paragraph::asString(Buffer const & buffer, bool label) const
+docstring Paragraph::asString(int options) const
 {
-       return asString(buffer, 0, size(), label);
+       return asString(0, size(), options);
 }
 
 
-docstring const Paragraph::asString(Buffer const & buffer,
-                                pos_type beg, pos_type end, bool label) const
+docstring Paragraph::asString(pos_type beg, pos_type end, int options) const
 {
-
        odocstringstream os;
 
-       if (beg == 0 && label && !params().labelString().empty())
-               os << params().labelString() << ' ';
+       if (beg == 0 
+               && options & AS_STR_LABEL
+               && !d->params_.labelString().empty())
+               os << d->params_.labelString() << ' ';
 
        for (pos_type i = beg; i < end; ++i) {
                char_type const c = d->text_[i];
                if (isPrintable(c))
                        os.put(c);
-               else if (c == META_INSET)
-                       getInset(i)->textString(buffer, os);
+               else if (c == META_INSET && options & AS_STR_INSETS)
+                       getInset(i)->textString(os);
        }
 
        return os.str();
@@ -2346,15 +2403,24 @@ int Paragraph::id() const
 }
 
 
-LayoutPtr const & Paragraph::layout() const
+Layout const & Paragraph::layout() const
 {
-       return d->layout_;
+       return *d->layout_;
 }
 
 
-void Paragraph::layout(LayoutPtr const & new_layout)
+void Paragraph::setLayout(Layout const & layout)
 {
-       d->layout_ = new_layout;
+       d->layout_ = &layout;
+}
+
+
+void Paragraph::setPlainOrDefaultLayout(DocumentClass const & tclass)
+{
+       if (usePlainLayout())
+               setLayout(tclass.plainLayout());
+       else
+               setLayout(tclass.defaultLayout());
 }
 
 
@@ -2366,8 +2432,7 @@ 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;
 }
 
 
@@ -2385,7 +2450,7 @@ ParagraphParameters const & Paragraph::params() const
 
 bool Paragraph::isFreeSpacing() const
 {
-       if (layout()->free_spacing)
+       if (d->layout_->free_spacing)
                return true;
        return d->inset_owner_ && d->inset_owner_->isFreeSpacing();
 }
@@ -2393,7 +2458,7 @@ bool Paragraph::isFreeSpacing() const
 
 bool Paragraph::allowEmpty() const
 {
-       if (layout()->keepempty)
+       if (d->layout_->keepempty)
                return true;
        return d->inset_owner_ && d->inset_owner_->allowEmpty();
 }
@@ -2401,7 +2466,7 @@ bool Paragraph::allowEmpty() const
 
 char_type Paragraph::transformChar(char_type c, pos_type pos) const
 {
-       if (!Encodings::is_arabic(c))
+       if (!Encodings::isArabicChar(c))
                return c;
 
        char_type prev_char = ' ';
@@ -2409,7 +2474,7 @@ char_type Paragraph::transformChar(char_type c, pos_type pos) const
 
        for (pos_type i = pos - 1; i >= 0; --i) {
                char_type const par_char = d->text_[i];
-               if (!Encodings::isComposeChar_arabic(par_char)) {
+               if (!Encodings::isArabicComposeChar(par_char)) {
                        prev_char = par_char;
                        break;
                }
@@ -2417,21 +2482,21 @@ char_type Paragraph::transformChar(char_type c, pos_type pos) const
 
        for (pos_type i = pos + 1, end = size(); i < end; ++i) {
                char_type const par_char = d->text_[i];
-               if (!Encodings::isComposeChar_arabic(par_char)) {
+               if (!Encodings::isArabicComposeChar(par_char)) {
                        next_char = par_char;
                        break;
                }
        }
 
-       if (Encodings::is_arabic(next_char)) {
-               if (Encodings::is_arabic(prev_char) &&
-                       !Encodings::is_arabic_special(prev_char))
+       if (Encodings::isArabicChar(next_char)) {
+               if (Encodings::isArabicChar(prev_char) &&
+                       !Encodings::isArabicSpecialChar(prev_char))
                        return Encodings::transformChar(c, Encodings::FORM_MEDIAL);
                else
                        return Encodings::transformChar(c, Encodings::FORM_INITIAL);
        } else {
-               if (Encodings::is_arabic(prev_char) &&
-                       !Encodings::is_arabic_special(prev_char))
+               if (Encodings::isArabicChar(prev_char) &&
+                       !Encodings::isArabicSpecialChar(prev_char))
                        return Encodings::transformChar(c, Encodings::FORM_FINAL);
                else
                        return Encodings::transformChar(c, Encodings::FORM_ISOLATED);
@@ -2439,14 +2504,14 @@ char_type Paragraph::transformChar(char_type c, pos_type pos) const
 }
 
 
-int Paragraph::checkBiblio(bool track_changes)
+int Paragraph::checkBiblio(Buffer const & buffer)
 {
-       //FIXME From JS:
-       //This is getting more and more a mess. ...We really should clean
-       //up this bibitem issue for 1.6. See also bug 2743.
+       // FIXME From JS:
+       // This is getting more and more a mess. ...We really should clean
+       // up this bibitem issue for 1.6. See also bug 2743.
 
        // Add bibitem insets if necessary
-       if (layout()->labeltype != LABEL_BIBLIO)
+       if (d->layout_->labeltype != LABEL_BIBLIO)
                return 0;
 
        bool hasbibitem = !d->insetlist_.empty()
@@ -2454,6 +2519,8 @@ int Paragraph::checkBiblio(bool track_changes)
                && d->text_[0] == META_INSET
                && d->insetlist_.begin()->inset->lyxCode() == BIBITEM_CODE;
 
+       bool track_changes = buffer.params().trackChanges;
+
        docstring oldkey;
        docstring oldlabel;
 
@@ -2476,13 +2543,13 @@ int Paragraph::checkBiblio(bool track_changes)
                        break;
        }
 
-       //There was an InsetBibitem at the beginning, and we didn't
-       //have to erase one.
+       // There was an InsetBibitem at the beginning, and we didn't
+       // have to erase one.
        if (hasbibitem && erasedInsetPosition < 0)
                        return 0;
 
-       //There was an InsetBibitem at the beginning and we did have to
-       //erase one. So we give its properties to the beginning inset.
+       // There was an InsetBibitem at the beginning and we did have to
+       // erase one. So we give its properties to the beginning inset.
        if (hasbibitem) {
                InsetBibitem * inset =
                        static_cast<InsetBibitem *>(d->insetlist_.begin()->inset);
@@ -2492,9 +2559,10 @@ int Paragraph::checkBiblio(bool track_changes)
                return -erasedInsetPosition;
        }
 
-       //There was no inset at the beginning, so we need to create one with
-       //the key and label of the one we erased.
-       InsetBibitem * inset(new InsetBibitem(InsetCommandParams(BIBITEM_CODE)));
+       // There was no inset at the beginning, so we need to create one with
+       // the key and label of the one we erased.
+       InsetBibitem * inset = 
+               new InsetBibitem(buffer, InsetCommandParams(BIBITEM_CODE));
        // restore values of previously deleted item in this par.
        if (!oldkey.empty())
                inset->setParam("key", oldkey);
@@ -2536,6 +2604,12 @@ InsetList const & Paragraph::insetList() const
 }
 
 
+void Paragraph::setBuffer(Buffer & b)
+{
+       d->insetlist_.setBuffer(b);
+}
+
+
 Inset * Paragraph::releaseInset(pos_type pos)
 {
        Inset * inset = d->insetlist_.release(pos);
@@ -2547,18 +2621,20 @@ Inset * Paragraph::releaseInset(pos_type pos)
 
 Inset * Paragraph::getInset(pos_type pos)
 {
-       return d->insetlist_.get(pos);
+       return (pos < pos_type(d->text_.size()) && d->text_[pos] == META_INSET)
+                ? d->insetlist_.get(pos) : 0;
 }
 
 
 Inset const * Paragraph::getInset(pos_type pos) const
 {
-       return d->insetlist_.get(pos);
+       return (pos < pos_type(d->text_.size()) && d->text_[pos] == META_INSET)
+                ? d->insetlist_.get(pos) : 0;
 }
 
 
 void Paragraph::changeCase(BufferParams const & bparams, pos_type pos,
-               pos_type right, TextCase action)
+               pos_type right, TextCase action)
 {
        // process sequences of modified characters; in change
        // tracking mode, this approach results in much better
@@ -2686,4 +2762,66 @@ bool Paragraph::isSeparator(pos_type pos) const
 }
 
 
+void Paragraph::deregisterWords()
+{
+       Private::Words::const_iterator it;
+       WordList & wl = theWordList();
+       for (it = d->words_.begin(); it != d->words_.end(); ++it)
+               wl.remove(*it);
+       d->words_.clear();
+}
+
+
+void Paragraph::collectWords(CursorSlice const & sl)
+{
+       // find new words
+       bool inword = false;
+
+       //lyxerr << "Words: ";
+       pos_type n = size();
+       for (pos_type pos = 0; pos != n; ++pos) {
+               if (isDeleted(pos))
+                       continue;
+
+               if (!isLetter(pos)) {
+                       inword = false;
+                       continue;
+               }
+
+               if (inword)
+                       continue;
+
+               inword = true;
+               CursorSlice from = sl;
+               CursorSlice to = sl;
+               from.pos() = pos;
+               to.pos() = pos;
+               from.text()->getWord(from, to, WHOLE_WORD);
+               if (to.pos() - from.pos() < 6)
+                       continue;
+               docstring word = asString(from.pos(), to.pos(), false);
+               d->words_.insert(word);
+               //lyxerr << word << " ";
+       }
+       //lyxerr << std::endl;
+}
+
+
+void Paragraph::registerWords()
+{
+       Private::Words::const_iterator it;
+       WordList & wl = theWordList();
+       for (it = d->words_.begin(); it != d->words_.end(); ++it)
+               wl.insert(*it);
+}
+
+
+void Paragraph::updateWords(CursorSlice const & sl)
+{
+       LASSERT(&sl.paragraph() == this, /**/);
+       deregisterWords();
+       collectWords(sl);
+       registerWords();
+}
+
 } // namespace lyx