]> git.lyx.org Git - lyx.git/blobdiff - src/CutAndPaste.cpp
Update Win installer for new dictionary links. Untested.
[lyx.git] / src / CutAndPaste.cpp
index cef66b5e5eb3ded9977f6b3d863335b7b9341a09..abed1567d7fa289520784322cba948e8f0367b88 100644 (file)
@@ -15,9 +15,9 @@
 
 #include "CutAndPaste.h"
 
+#include "Author.h"
 #include "BranchList.h"
 #include "Buffer.h"
-#include "buffer_funcs.h"
 #include "BufferList.h"
 #include "BufferParams.h"
 #include "BufferView.h"
@@ -28,7 +28,6 @@
 #include "FuncCode.h"
 #include "FuncRequest.h"
 #include "InsetIterator.h"
-#include "InsetList.h"
 #include "Language.h"
 #include "LyX.h"
 #include "LyXRC.h"
@@ -40,8 +39,8 @@
 
 #include "insets/InsetBibitem.h"
 #include "insets/InsetBranch.h"
+#include "insets/InsetCitation.h"
 #include "insets/InsetCommand.h"
-#include "insets/InsetFlex.h"
 #include "insets/InsetGraphics.h"
 #include "insets/InsetGraphicsParams.h"
 #include "insets/InsetInclude.h"
 #include "support/lassert.h"
 #include "support/limited_stack.h"
 #include "support/lstrings.h"
+#include "support/TempFile.h"
+#include "support/unique_ptr.h"
 
 #include "frontends/alert.h"
 #include "frontends/Clipboard.h"
-#include "frontends/Selection.h"
-
-#include <boost/tuple/tuple.hpp>
-#include <boost/next_prior.hpp>
 
 #include <string>
+#include <tuple>
 
 using namespace std;
 using namespace lyx::support;
@@ -79,12 +77,15 @@ namespace lyx {
 namespace {
 
 typedef pair<pit_type, int> PitPosPair;
+typedef pair<DocumentClassConstPtr, AuthorList > DocInfoPair;
 
-typedef limited_stack<pair<ParagraphList, DocumentClassConstPtr> > CutStack;
+typedef limited_stack<pair<ParagraphList, DocInfoPair > > CutStack;
 
 CutStack theCuts(10);
 // persistent selection, cleared until the next selection
 CutStack selectionBuffer(1);
+// temporary scratch area
+CutStack tempCut(1);
 
 // store whether the tabular stack is newer than the normal copy stack
 // FIXME: this is a workaround for bug 1919. Should be removed for 1.5,
@@ -99,43 +100,81 @@ bool checkPastePossible(int index)
 
 
 struct PasteReturnValue {
-       PasteReturnValue(pit_type r_par, pos_type r_pos, bool r_nu) :
-         par(r_par), pos(r_pos), needupdate(r_nu)
+       PasteReturnValue(pit_type r_pit, pos_type r_pos, bool r_nu) :
+         pit(r_pit), pos(r_pos), needupdate(r_nu)
        {}
 
-       pit_type par;
+       pit_type pit;
        pos_type pos;
        bool needupdate;
 };
 
+
+/// return true if the whole ParagraphList is deleted
+static bool isFullyDeleted(ParagraphList const & pars)
+{
+       pit_type const pars_size = static_cast<pit_type>(pars.size());
+
+       // check all paragraphs
+       for (pit_type pit = 0; pit < pars_size; ++pit) {
+               if (!pars[pit].empty())   // prevent assertion failure
+                       if (!pars[pit].isDeleted(0, pars[pit].size()))
+                               return false;
+       }
+       return true;
+}
+
 PasteReturnValue
 pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
-                    DocumentClassConstPtr oldDocClass, ErrorList & errorlist)
+                     DocumentClassConstPtr oldDocClass, cap::BranchAction branchAction,
+                     ErrorList & errorlist)
 {
        Buffer const & buffer = *cur.buffer();
        pit_type pit = cur.pit();
        pos_type pos = cur.pos();
        bool need_update = false;
+
+       if (parlist.empty())
+               return PasteReturnValue(pit, pos, need_update);
+
+       // Check whether we paste into an inset that does not
+       // produce output (needed for label duplicate check)
+       bool in_active_inset = cur.paragraph().inInset().producesOutput();
+       if (in_active_inset) {
+               for (size_type sl = 0 ; sl < cur.depth() ; ++sl) {
+                       Paragraph const & outer_par = cur[sl].paragraph();
+                       if (!outer_par.inInset().producesOutput()) {
+                               in_active_inset = false;
+                               break;
+                       }
+               }
+       }
+
        InsetText * target_inset = cur.inset().asInsetText();
        if (!target_inset) {
                InsetTabular * it = cur.inset().asInsetTabular();
-               target_inset = it? it->cell(cur.idx())->asInsetText() : 0;
+               target_inset = it ? it->cell(cur.idx())->asInsetText() : nullptr;
        }
        LASSERT(target_inset, return PasteReturnValue(pit, pos, need_update));
-       ParagraphList & pars = target_inset->paragraphs();
 
-       if (parlist.empty())
-               return PasteReturnValue(pit, pos, need_update);
-
-       BOOST_ASSERT (pos <= pars[pit].size());
+       ParagraphList & pars = target_inset->paragraphs();
+       LASSERT(pos <= pars[pit].size(),
+                       return PasteReturnValue(pit, pos, need_update));
 
        // Make a copy of the CaP paragraphs.
        ParagraphList insertion = parlist;
-       DocumentClassConstPtr newDocClass = buffer.params().documentClassPtr();
 
        // Now remove all out of the pars which is NOT allowed in the
        // new environment and set also another font if that is required.
 
+       // Merge paragraphs that are to be pasted into a text inset
+       // that does not allow multiple pars.
+       InsetText * inset_text = target_inset->asInsetText();
+       if (inset_text && !inset_text->allowMultiPar()) {
+               while (insertion.size() > 1)
+                       mergeParagraph(buffer.params(), insertion, 0);
+       }
+
        // Convert newline to paragraph break in ParbreakIsNewline
        if (target_inset->getLayout().parbreakIsNewline()
            || pars[pit].layout().parbreak_is_newline) {
@@ -154,27 +193,58 @@ pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
                }
        }
 
+       // Prevent to paste uncodable characters in verbatim and ERT.
+       // The encoding is inherited from the context here.
+       docstring uncodable_content;
+       if (target_inset->getLayout().isPassThru() && cur.getEncoding()) {
+               odocstringstream res;
+               Encoding const * e = cur.getEncoding();
+               for (size_t i = 0; i != insertion.size(); ++i) {
+                       pos_type end = insertion[i].size();
+                       for (pos_type j = 0; j != end; ++j) {
+                               // skip insets
+                               if (insertion[i].isInset(j))
+                                       continue;
+                               char_type const c = insertion[i].getChar(j);
+                               if (!e->encodable(c)) {
+                                       // do not track deletion
+                                       res.put(c);
+                                       insertion[i].eraseChar(j, false);
+                                       --end;
+                                       --j;
+                               }
+                       }
+               }
+               docstring const uncodable = res.str();
+               if (!uncodable.empty()) {
+                       if (uncodable.size() == 1)
+                               uncodable_content = bformat(_("The character \"%1$s\" is uncodable in this verbatim context "
+                                                     "and thus has not been pasted."),
+                                                   uncodable);
+                       else
+                               uncodable_content = bformat(_("The characters \"%1$s\" are uncodable in this verbatim context "
+                                                     "and thus have not been pasted."),
+                                                   uncodable);
+               }
+       }
+
        // set the paragraphs to plain layout if necessary
+       DocumentClassConstPtr newDocClass = buffer.params().documentClassPtr();
+       Layout const & plainLayout = newDocClass->plainLayout();
+       Layout const & defaultLayout = newDocClass->defaultLayout();
        if (cur.inset().usePlainLayout()) {
-               bool forcePlainLayout = cur.inset().forcePlainLayout();
-               Layout const & plainLayout = newDocClass->plainLayout();
-               Layout const & defaultLayout = newDocClass->defaultLayout();
-               ParagraphList::iterator const end = insertion.end();
-               ParagraphList::iterator par = insertion.begin();
-               for (; par != end; ++par) {
-                       Layout const & parLayout = par->layout();
+               bool forcePlainLayout = target_inset->forcePlainLayout();
+               for (auto & par : insertion) {
+                       Layout const & parLayout = par.layout();
                        if (forcePlainLayout || parLayout == defaultLayout)
-                               par->setLayout(plainLayout);
+                               par.setLayout(plainLayout);
                }
-       } else { // check if we need to reset from plain layout
-               Layout const & defaultLayout = newDocClass->defaultLayout();
-               Layout const & plainLayout = newDocClass->plainLayout();
-               ParagraphList::iterator const end = insertion.end();
-               ParagraphList::iterator par = insertion.begin();
-               for (; par != end; ++par) {
-                       Layout const & parLayout = par->layout();
+       } else {
+               // check if we need to reset from plain layout
+               for (auto & par : insertion) {
+                       Layout const & parLayout = par.layout();
                        if (parLayout == plainLayout)
-                               par->setLayout(defaultLayout);
+                               par.setLayout(defaultLayout);
                }
        }
 
@@ -187,6 +257,9 @@ pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
        // want to invalidate them.
        insertion.swap(in.paragraphs());
        cap::switchBetweenClasses(oldDocClass, newDocClass, in, errorlist);
+       // Do this here since switchBetweenClasses clears the errorlist
+       if (!uncodable_content.empty())
+               errorlist.push_back(ErrorItem(_("Uncodable content"), uncodable_content));
        insertion.swap(in.paragraphs());
 
        ParagraphList::iterator tmpbuf = insertion.begin();
@@ -208,10 +281,8 @@ pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
                if (tmpbuf->params().depth() > max_depth)
                        tmpbuf->params().depth(max_depth);
 
-               // Only set this from the 2nd on as the 2nd depends
-               // for maxDepth still on pit.
-               if (tmpbuf != insertion.begin())
-                       max_depth = tmpbuf->getMaxDepthAfter();
+               // Set max_depth for the next paragraph
+               max_depth = tmpbuf->getMaxDepthAfter();
 
                // Set the inset owner of this paragraph.
                tmpbuf->setInsetOwner(target_inset);
@@ -221,26 +292,35 @@ pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
                                if (!target_inset->insetAllowed(inset->lyxCode()))
                                        tmpbuf->eraseChar(i--, false);
                }
-
-               tmpbuf->setChange(Change(buffer.params().trackChanges ?
-                                        Change::INSERTED : Change::UNCHANGED));
        }
 
-       bool const empty = pars[pit].empty();
-       if (!empty) {
-               // Make the buf exactly the same layout as the cursor
-               // paragraph.
+       bool const target_empty = pars[pit].empty();
+       // Use the paste content's layout, if...
+       bool const paste_layout =
+               // if target paragraph is empty
+               (target_empty
+                // ... and its layout is default
+                && (pars[pit].layout() == defaultLayout
+                    // ... or plain
+                    || pars[pit].layout() == plainLayout
+                    // ... or the paste content spans several paragraphs
+                    || insertion.size() > 1))
+               // or if pasting is done at the beginning of paragraph
+                || (pos == 0
+                    // and the paste content spans several paragraphs
+                    && insertion.size() > 1);
+       if (!paste_layout)
+               // Give the first paragraph to insert the same layout as the
+               // target paragraph.
                insertion.begin()->makeSameLayout(pars[pit]);
-       }
 
        // Prepare the paragraphs and insets for insertion.
        insertion.swap(in.paragraphs());
 
-       InsetIterator const i_end = inset_iterator_end(in);
-       for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
-               // Even though this will also be done later, it has to be done here 
-               // since some inset might going to try to access
-               // the buffer() member.
+       InsetIterator const i_end = end(in);
+       for (InsetIterator it = begin(in); it != i_end; ++it) {
+               // Even though this will also be done later, it has to be done here
+               // since some inset might try to access the buffer() member.
                it->setBuffer(const_cast<Buffer &>(buffer));
                switch (it->lyxCode()) {
 
@@ -253,14 +333,14 @@ pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
                                        continue;
                                InsetLabel * lab = labels[i];
                                docstring const oldname = lab->getParam("name");
-                               lab->updateLabel(oldname);
+                               lab->updateLabel(oldname, in_active_inset);
                                // We need to update the buffer reference cache.
                                need_update = true;
                                docstring const newname = lab->getParam("name");
                                if (oldname == newname)
                                        continue;
                                // adapt the references
-                               for (InsetIterator itt = inset_iterator_begin(in);
+                               for (InsetIterator itt = begin(in);
                                      itt != i_end; ++itt) {
                                        if (itt->lyxCode() == REF_CODE) {
                                                InsetCommand * ref = itt->asInsetCommand();
@@ -284,14 +364,14 @@ pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
                        // check for duplicates
                        InsetLabel & lab = static_cast<InsetLabel &>(*it);
                        docstring const oldname = lab.getParam("name");
-                       lab.updateLabel(oldname);
+                       lab.updateLabel(oldname, in_active_inset);
                        // We need to update the buffer reference cache.
                        need_update = true;
                        docstring const newname = lab.getParam("name");
                        if (oldname == newname)
                                break;
                        // adapt the references
-                       for (InsetIterator itt = inset_iterator_begin(in); itt != i_end; ++itt) {
+                       for (InsetIterator itt = begin(in); itt != i_end; ++itt) {
                                if (itt->lyxCode() == REF_CODE) {
                                        InsetCommand & ref = static_cast<InsetCommand &>(*itt);
                                        if (ref.getParam("reference") == oldname)
@@ -317,6 +397,16 @@ pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
                        break;
                }
 
+               case CITE_CODE: {
+                       InsetCitation & cit = static_cast<InsetCitation &>(*it);
+                       // This actually only needs to be done if the cite engine
+                       // differs, but we do it in general.
+                       cit.redoLabel();
+                       // We need to update the list of citations.
+                       need_update = true;
+                       break;
+               }
+
                case BIBITEM_CODE: {
                        // check for duplicates
                        InsetBibitem & bib = static_cast<InsetBibitem &>(*it);
@@ -328,7 +418,7 @@ pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
                        if (oldkey == newkey)
                                break;
                        // adapt the references
-                       for (InsetIterator itt = inset_iterator_begin(in);
+                       for (InsetIterator itt = begin(in);
                             itt != i_end; ++itt) {
                                if (itt->lyxCode() == CITE_CODE) {
                                        InsetCommand * ref = itt->asInsetCommand();
@@ -352,15 +442,28 @@ pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
                            || (is_child && (branchlist.find(name)
                                || buffer.masterBuffer()->params().branchlist().find(name))))
                                break;
-                       // FIXME: add an option to add the branch to the master's BranchList.
-                       docstring text = bformat(
+                       switch(branchAction) {
+                       case cap::BRANCH_ADD: {
+                               // This is for a temporary buffer, so simply create the branch.
+                               // Must not use lyx::dispatch(), since tmpbuffer has no view.
+                               DispatchResult dr;
+                               const_cast<Buffer&>(buffer).dispatch(FuncRequest(LFUN_BRANCH_ADD, name), dr);
+                               break;
+                       }
+                       case cap::BRANCH_ASK: {
+                               docstring text = bformat(
                                        _("The pasted branch \"%1$s\" is undefined.\n"
                                          "Do you want to add it to the document's branch list?"),
                                        name);
-                       if (frontend::Alert::prompt(_("Unknown branch"),
+                               if (frontend::Alert::prompt(_("Unknown branch"),
                                          text, 0, 1, _("&Add"), _("&Don't Add")) != 0)
+                                       break;
+                               lyx::dispatch(FuncRequest(LFUN_BRANCH_ADD, name));
+                               break;
+                       }
+                       case cap::BRANCH_IGNORE:
                                break;
-                       lyx::dispatch(FuncRequest(LFUN_BRANCH_ADD, name));
+                       }
                        // We need to update the list of branches.
                        need_update = true;
                        break;
@@ -372,23 +475,52 @@ pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
        }
        insertion.swap(in.paragraphs());
 
+       // We need to do this here, after the inset handling above,
+       // as acceptChanges() and rejectChanges() might access inset buffers.
+       tmpbuf = insertion.begin();
+       for (; tmpbuf != insertion.end(); ++tmpbuf) {
+               if (lyxrc.ct_markup_copied) {
+                       // Only remove deleted text and change
+                       // the rest to inserted if ct is active,
+                       // otherwise leave markup as is
+                       if (buffer.params().track_changes) {
+                               if (tmpbuf->size() > 0) {
+                                       if (!isFullyDeleted(insertion))
+                                               tmpbuf->acceptChanges(0, tmpbuf->size());
+                                       else
+                                               tmpbuf->rejectChanges(0, tmpbuf->size());
+                               }
+                               tmpbuf->setChange(Change(Change::INSERTED));
+                       }
+               } else
+                       // Resolve all markup to inserted or unchanged
+                       // Deleted text has already been removed on copy
+                       // (copySelectionHelper)
+                       tmpbuf->setChange(Change(buffer.params().track_changes ?
+                                                Change::INSERTED : Change::UNCHANGED));
+       }
+
        // Split the paragraph for inserting the buf if necessary.
-       if (!empty)
+       if (!target_empty)
                breakParagraphConservative(buffer.params(), pars, pit, pos);
 
+       // If multiple paragraphs are inserted before the target paragraph,
+       // the cursor is now in a new paragraph before it,
+       // so use layout from paste content in that case.
+       if (pos == 0 && insertion.size() > 1)
+               pars[pit].makeSameLayout(* insertion.begin());
+
        // Paste it!
-       if (empty) {
-               pars.insert(boost::next(pars.begin(), pit),
-                           insertion.begin(),
-                           insertion.end());
+       if (target_empty) {
+               pars.insert(pars.iterator_at(pit),
+                           insertion.begin(), insertion.end());
 
                // merge the empty par with the last par of the insertion
                mergeParagraph(buffer.params(), pars,
                               pit + insertion.size() - 1);
        } else {
-               pars.insert(boost::next(pars.begin(), pit + 1),
-                           insertion.begin(),
-                           insertion.end());
+               pars.insert(pars.iterator_at(pit + 1),
+                           insertion.begin(), insertion.end());
 
                // merge the first par of the insertion with the current par
                mergeParagraph(buffer.params(), pars, pit);
@@ -404,11 +536,11 @@ pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
        // Set paragraph buffers. It's important to do this right away
        // before something calls Inset::buffer() and causes a crash.
        for (pit_type p = startpit; p <= pit; ++p)
-               pars[p].setBuffer(const_cast<Buffer &>(buffer));
+               pars[p].setInsetBuffers(const_cast<Buffer &>(buffer));
 
        // Join (conditionally) last pasted paragraph with next one, i.e.,
        // the tail of the spliced document paragraph
-       if (!empty && last_paste + 1 != pit_type(pars.size())) {
+       if (!target_empty && last_paste + 1 != pit_type(pars.size())) {
                if (pars[last_paste + 1].hasSameLayout(pars[last_paste])) {
                        mergeParagraph(buffer.params(), pars, last_paste);
                } else if (pars[last_paste + 1].empty()) {
@@ -418,7 +550,7 @@ pasteSelectionHelper(DocIterator const & cur, ParagraphList const & parlist,
                        pars[last_paste].makeSameLayout(pars[last_paste + 1]);
                        mergeParagraph(buffer.params(), pars, last_paste);
                } else {
-                       pars[last_paste + 1].stripLeadingSpaces(buffer.params().trackChanges);
+                       pars[last_paste + 1].stripLeadingSpaces(buffer.params().track_changes);
                        ++last_paste;
                }
        }
@@ -439,23 +571,20 @@ PitPosPair eraseSelectionHelper(BufferParams const & params,
 
        // Start and end is inside same paragraph
        if (endpit == pit_type(pars.size()) || startpit == endpit) {
-               endpos -= pars[startpit].eraseChars(startpos, endpos, params.trackChanges);
+               endpos -= pars[startpit].eraseChars(startpos, endpos, params.track_changes);
                return PitPosPair(endpit, endpos);
        }
 
        for (pit_type pit = startpit; pit != endpit + 1;) {
                pos_type const left  = (pit == startpit ? startpos : 0);
                pos_type right = (pit == endpit ? endpos : pars[pit].size() + 1);
-               bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.trackChanges);
+               bool const merge = pars[pit].isMergedOnEndOfParDeletion(params.track_changes);
 
                // Logically erase only, including the end-of-paragraph character
-               pars[pit].eraseChars(left, right, params.trackChanges);
+               pars[pit].eraseChars(left, right, params.track_changes);
 
                // Separate handling of paragraph break:
-               if (merge && pit != endpit &&
-                   (pit + 1 != endpit 
-                    || pars[pit].hasSameLayout(pars[endpit])
-                    || pars[endpit].size() == endpos)) {
+               if (merge && pit != endpit) {
                        if (pit + 1 == endpit)
                                endpos += pars[pit].size();
                        mergeParagraph(params, pars, pit);
@@ -471,93 +600,119 @@ PitPosPair eraseSelectionHelper(BufferParams const & params,
 }
 
 
-void putClipboard(ParagraphList const & paragraphs, 
-       DocumentClassConstPtr docclass, docstring const & plaintext)
+Buffer * copyToTempBuffer(ParagraphList const & paragraphs, DocumentClassConstPtr docclass)
 {
        // This used to need to be static to avoid a memory leak. It no longer needs
        // to be so, but the alternative is to construct a new one of these (with a
        // new temporary directory, etc) every time, and then to destroy it. So maybe
        // it's worth just keeping this one around.
-       Buffer * staticbuffer = theBufferList().newInternalBuffer(
-               FileName::tempName("clipboard.internal").absFileName());
-
-       // These two things only really need doing the first time.
-       staticbuffer->setUnnamed(true);
-       staticbuffer->inset().setBuffer(*staticbuffer);
-
+       static TempFile tempfile("clipboard.internal");
+       tempfile.setAutoRemove(false);
+       // The initialization of staticbuffer is thread-safe. Using a lambda
+       // guarantees that the properties are set only once.
+       static Buffer * staticbuffer = [&](){
+               Buffer * b =
+                       theBufferList().newInternalBuffer(tempfile.name().absFileName());
+               b->setUnnamed(true);
+               b->inset().setBuffer(*b);
+               //initialize staticbuffer with b
+               return b;
+       }();
        // Use a clone for the complicated stuff so that we do not need to clean
        // up in order to avoid a crash.
        Buffer * buffer = staticbuffer->cloneBufferOnly();
-       LASSERT(buffer, return);
+       LASSERT(buffer, return nullptr);
 
        // This needs doing every time.
+       // Since setDocumentClass() causes deletion of the old document class
+       // we need to reset all layout pointers in paragraphs (otherwise they
+       // would be dangling).
+       ParIterator const end = buffer->par_iterator_end();
+       for (ParIterator it = buffer->par_iterator_begin(); it != end; ++it) {
+               docstring const name = it->layout().name();
+               if (docclass->hasLayout(name))
+                       it->setLayout((*docclass)[name]);
+               else
+                       it->setPlainOrDefaultLayout(*docclass);
+       }
        buffer->params().setDocumentClass(docclass);
 
        // we will use pasteSelectionHelper to copy the paragraphs into the
        // temporary Buffer, since it does a lot of things to fix them up.
        DocIterator dit = doc_iterator_begin(buffer, &buffer->inset());
        ErrorList el;
-       pasteSelectionHelper(dit, paragraphs, docclass, el);
+       pasteSelectionHelper(dit, paragraphs, docclass, cap::BRANCH_ADD, el);
+
+       return buffer;
+}
+
+
+void putClipboard(ParagraphList const & paragraphs,
+                 DocInfoPair docinfo, docstring const & plaintext,
+                 BufferParams const & bp)
+{
+       Buffer * buffer = copyToTempBuffer(paragraphs, docinfo.first);
+       if (!buffer) // already asserted in copyToTempBuffer()
+               return;
 
        // We don't want to produce images that are not used. Therefore,
        // output formulas as MathML. Even if this is not understood by all
        // applications, the number that can parse it should go up in the future.
        buffer->params().html_math_output = BufferParams::MathML;
 
-       // The Buffer is being used to export. This is necessary so that the
-       // updateMacros call will record the needed information.
-       MarkAsExporting mex(buffer);
-
-       buffer->updateBuffer(Buffer::UpdateMaster, OutputUpdate);
-       buffer->updateMacros();
-       buffer->updateMacroInstances(OutputUpdate);
-
-       // LyX's own format
-       string lyx;
-       ostringstream oslyx;
-       if (buffer->write(oslyx))
-               lyx = oslyx.str();
-
-       // XHTML format
-       odocstringstream oshtml;
-       OutputParams runparams(encodings.fromLyXName("utf8"));
-       buffer->writeLyXHTMLSource(oshtml, runparams, Buffer::FullSource);
-
-       theClipboard().put(lyx, oshtml.str(), plaintext);
+       // Copy authors to the params. We need those pointers.
+       for (Author const & a : bp.authors())
+               buffer->params().authors().record(a);
+
+       // Make sure MarkAsExporting is deleted before buffer is
+       {
+               // The Buffer is being used to export. This is necessary so that the
+               // updateMacros call will record the needed information.
+               MarkAsExporting mex(buffer);
+
+               buffer->updateBuffer(Buffer::UpdateMaster, OutputUpdate);
+               buffer->updateMacros();
+               buffer->updateMacroInstances(OutputUpdate);
+
+               // LyX's own format
+               string lyx;
+               ostringstream oslyx;
+               if (buffer->write(oslyx))
+                       lyx = oslyx.str();
+
+               // XHTML format
+               odocstringstream oshtml;
+               OutputParams runparams(encodings.fromLyXName("utf8"));
+               // We do not need to produce images, etc.
+               runparams.dryrun = true;
+               // We are not interested in errors (bug 8866)
+               runparams.silent = true;
+               buffer->writeLyXHTMLSource(oshtml, runparams, Buffer::FullSource);
+
+               theClipboard().put(lyx, oshtml.str(), plaintext);
+       }
 
        // Save that memory
        delete buffer;
 }
 
 
-/// return true if the whole ParagraphList is deleted
-static bool isFullyDeleted(ParagraphList const & pars)
-{
-       pit_type const pars_size = static_cast<pit_type>(pars.size());
-
-       // check all paragraphs
-       for (pit_type pit = 0; pit < pars_size; ++pit) {
-               if (!pars[pit].empty())   // prevent assertion failure
-                       if (!pars[pit].isDeleted(0, pars[pit].size()))
-                               return false;
-       }
-       return true;
-}
-
-
 void copySelectionHelper(Buffer const & buf, Text const & text,
        pit_type startpit, pit_type endpit,
        int start, int end, DocumentClassConstPtr dc, CutStack & cutstack)
 {
        ParagraphList const & pars = text.paragraphs();
 
-       LASSERT(0 <= start && start <= pars[startpit].size(), /**/);
-       LASSERT(0 <= end && end <= pars[endpit].size(), /**/);
-       LASSERT(startpit != endpit || start <= end, /**/);
+       // In most of these cases, we can try to recover.
+       LASSERT(0 <= start, start = 0);
+       LASSERT(start <= pars[startpit].size(), start = pars[startpit].size());
+       LASSERT(0 <= end, end = 0);
+       LASSERT(end <= pars[endpit].size(), end = pars[endpit].size());
+       LASSERT(startpit != endpit || start <= end, return);
 
        // Clone the paragraphs within the selection.
-       ParagraphList copy_pars(boost::next(pars.begin(), startpit),
-                               boost::next(pars.begin(), endpit + 1));
+       ParagraphList copy_pars(pars.iterator_at(startpit),
+                               pars.iterator_at(endpit + 1));
 
        // Remove the end of the last paragraph; afterwards, remove the
        // beginning of the first paragraph. Keep this order - there may only
@@ -569,54 +724,50 @@ void copySelectionHelper(Buffer const & buf, Text const & text,
        Paragraph & front = copy_pars.front();
        front.eraseChars(0, start, false);
 
-       ParagraphList::iterator it = copy_pars.begin();
-       ParagraphList::iterator it_end = copy_pars.end();
-
-       for (; it != it_end; ++it) {
+       for (auto & par : copy_pars) {
                // Since we have a copy of the paragraphs, the insets
                // do not have a proper buffer reference. It makes
                // sense to add them temporarily, because the
                // operations below depend on that (acceptChanges included).
-               it->setBuffer(const_cast<Buffer &>(buf));
+               par.setInsetBuffers(const_cast<Buffer &>(buf));
                // PassThru paragraphs have the Language
                // latex_language. This is invalid for others, so we
                // need to change it to the buffer language.
-               if (it->isPassThru())
-                       it->changeLanguage(buf.params(), 
+               if (par.isPassThru())
+                       par.changeLanguage(buf.params(),
                                           latex_language, buf.language());
        }
 
        // do not copy text (also nested in insets) which is marked as
        // deleted, unless the whole selection was deleted
-       if (!isFullyDeleted(copy_pars))
-               acceptChanges(copy_pars, buf.params());
-       else
-               rejectChanges(copy_pars, buf.params());
+       if (!lyxrc.ct_markup_copied) {
+               if (!isFullyDeleted(copy_pars))
+                       acceptChanges(copy_pars, buf.params());
+               else
+                       rejectChanges(copy_pars, buf.params());
+       }
 
 
        // do some final cleanup now, to make sure that the paragraphs
        // are not linked to something else.
-       it = copy_pars.begin();
-       for (; it != it_end; ++it) {
-               it->setBuffer(*static_cast<Buffer *>(0));
-               it->setInsetOwner(0);
+       for (auto & par : copy_pars) {
+               par.resetBuffer();
+               par.setInsetOwner(nullptr);
        }
 
-       cutstack.push(make_pair(copy_pars, dc));
+       cutstack.push(make_pair(copy_pars, make_pair(dc, buf.params().authors())));
 }
 
-} // namespace anon
-
-
+} // namespace
 
 
 namespace cap {
 
 void region(CursorSlice const & i1, CursorSlice const & i2,
-           Inset::row_type & r1, Inset::row_type & r2,
-           Inset::col_type & c1, Inset::col_type & c2)
+                       row_type & r1, row_type & r2,
+                       col_type & c1, col_type & c2)
 {
-       Inset & p = i1.inset();
+       Inset const & p = i1.inset();
        c1 = p.col(i1.idx());
        c2 = p.col(i2.idx());
        if (c1 > c2)
@@ -638,7 +789,7 @@ docstring grabAndEraseSelection(Cursor & cur)
 }
 
 
-bool reduceSelectionToOneCell(Cursor & cur)
+bool reduceSelectionToOneCell(CursorData & cur)
 {
        if (!cur.selection() || !cur.inMathed())
                return false;
@@ -651,50 +802,57 @@ bool reduceSelectionToOneCell(Cursor & cur)
        // the easy case: do nothing if only one cell is selected
        if (i1.idx() == i2.idx())
                return true;
-       
+
        cur.top().pos() = 0;
        cur.resetAnchor();
        cur.top().pos() = cur.top().lastpos();
-       
+
        return true;
 }
 
 
-bool multipleCellsSelected(Cursor const & cur)
+bool multipleCellsSelected(CursorData const & cur)
 {
        if (!cur.selection() || !cur.inMathed())
                return false;
-       
+
        CursorSlice i1 = cur.selBegin();
        CursorSlice i2 = cur.selEnd();
        if (!i1.inset().asInsetMath())
                return false;
-       
+
        if (i1.idx() == i2.idx())
                return false;
-       
+
        return true;
 }
 
 
+void switchBetweenClasses(DocumentClassConstPtr oldone,
+               DocumentClassConstPtr newone, InsetText & in) {
+       ErrorList el = {};
+       switchBetweenClasses(oldone, newone, in, el);
+}
+
+
 void switchBetweenClasses(DocumentClassConstPtr oldone,
                DocumentClassConstPtr newone, InsetText & in, ErrorList & errorlist)
 {
        errorlist.clear();
 
-       LASSERT(!in.paragraphs().empty(), /**/);
+       LBUFERR(!in.paragraphs().empty());
        if (oldone == newone)
                return;
-       
+
        DocumentClass const & oldtc = *oldone;
        DocumentClass const & newtc = *newone;
 
        // layouts
        ParIterator it = par_iterator_begin(in);
-       ParIterator end = par_iterator_end(in);
+       ParIterator pend = par_iterator_end(in);
        // for remembering which layouts we've had to add
        set<docstring> newlayouts;
-       for (; it != end; ++it) {
+       for (; it != pend; ++it) {
                docstring const name = it->layout().name();
 
                // the pasted text will keep their own layout name. If this layout does
@@ -706,8 +864,8 @@ void switchBetweenClasses(DocumentClassConstPtr oldone,
                if (added_one || newlayouts.find(name) != newlayouts.end()) {
                        // Warn the user.
                        docstring const s = bformat(_("Layout `%1$s' was not found."), name);
-                       errorlist.push_back(
-                               ErrorItem(_("Layout Not Found"), s, it->id(), 0, it->size()));
+                       errorlist.push_back(ErrorItem(_("Layout Not Found"), s,
+                                                     {it->id(), 0}, {it->id(), -1}));
                }
 
                if (in.usePlainLayout())
@@ -716,35 +874,46 @@ void switchBetweenClasses(DocumentClassConstPtr oldone,
                        it->setLayout(newtc[name]);
        }
 
-       // character styles
-       InsetIterator const i_end = inset_iterator_end(in);
-       for (InsetIterator it = inset_iterator_begin(in); it != i_end; ++it) {
-               if (it->lyxCode() != FLEX_CODE)
-                       // FIXME: Should we verify all InsetCollapsable?
-                       continue;
-
-               docstring const layoutName = it->layoutName();
-               docstring const & n = newone->insetLayout(layoutName).name();
-               bool const is_undefined = n.empty() ||
-                       n == DocumentClass::plainInsetLayout().name();
-               if (!is_undefined)
-                       continue;
-
-               // The flex inset is undefined in newtc
-               docstring const oldname = from_utf8(oldtc.name());
-               docstring const newname = from_utf8(newtc.name());
-               docstring s;
-               if (oldname == newname)
-                       s = bformat(_("Flex inset %1$s is undefined after "
-                               "reloading `%2$s' layout."), layoutName, oldname);
-               else
-                       s = bformat(_("Flex inset %1$s is undefined because of "
-                               "conversion from `%2$s' layout to `%3$s'."),
-                               layoutName, oldname, newname);
-               // To warn the user that something had to be done.
-               errorlist.push_back(ErrorItem(
-                               _("Undefined flex inset"),
-                               s, it.paragraph().id(), it.pos(), it.pos() + 1));
+       // character styles and hidden table cells
+       InsetIterator const i_end = end(in);
+       for (InsetIterator iit = begin(in); iit != i_end; ++iit) {
+               InsetCode const code = iit->lyxCode();
+               if (code == FLEX_CODE) {
+                       // FIXME: Should we verify all InsetCollapsible?
+                       docstring const layoutName = iit->layoutName();
+                       docstring const & n = newone->insetLayout(layoutName).name();
+                       bool const is_undefined = n.empty() ||
+                               n == DocumentClass::plainInsetLayout().name();
+                       docstring const & oldn = oldone->insetLayout(layoutName).name();
+                       bool const was_undefined = oldn.empty() ||
+                               oldn == DocumentClass::plainInsetLayout().name();
+                       if (!is_undefined || was_undefined)
+                               continue;
+
+                       // The flex inset is undefined in newtc
+                       docstring const oldname = from_utf8(oldtc.name());
+                       docstring const newname = from_utf8(newtc.name());
+                       docstring s;
+                       if (oldname == newname)
+                               s = bformat(_("Flex inset %1$s is undefined after "
+                                       "reloading `%2$s' layout."), layoutName, oldname);
+                       else
+                               s = bformat(_("Flex inset %1$s is undefined because of "
+                                       "conversion from `%2$s' layout to `%3$s'."),
+                                       layoutName, oldname, newname);
+                       // To warn the user that something had to be done.
+                       errorlist.push_back(ErrorItem(
+                                                     _("Undefined flex inset"), s,
+                                                     {iit.paragraph().id(), iit.pos()},
+                                                     {iit.paragraph().id(), iit.pos() + 1}));
+               } else if (code == TABULAR_CODE) {
+                       // The recursion above does not catch paragraphs in "hidden" cells,
+                       // i.e., ones that are part of a multirow or multicolum. So we need
+                       // to handle those separately.
+                       // This is the cause of bug #9049.
+                       InsetTabular * table = iit->asInsetTabular();
+                       table->setLayoutForHiddenCells(newtc);
+               }
        }
 }
 
@@ -755,28 +924,20 @@ vector<docstring> availableSelections(Buffer const * buf)
        if (!buf)
                return selList;
 
-       CutStack::const_iterator cit = theCuts.begin();
-       CutStack::const_iterator end = theCuts.end();
-       for (; cit != end; ++cit) {
-               // we do not use cit-> here because gcc 2.9x does not
-               // like it (JMarc)
-               ParagraphList const & pars = (*cit).first;
-               docstring asciiSel;
-               ParagraphList::const_iterator pit = pars.begin();
-               ParagraphList::const_iterator pend = pars.end();
-               for (; pit != pend; ++pit) {
-                       Paragraph par(*pit, 0, 26);
+       for (auto const & cut : theCuts) {
+               ParagraphList const & pars = cut.first;
+               docstring textSel;
+               for (auto const & para : pars) {
+                       Paragraph par(para, 0, 46);
                        // adapt paragraph to current buffer.
-                       par.setBuffer(const_cast<Buffer &>(*buf));
-                       asciiSel += par.asString(AS_STR_INSETS);
-                       if (asciiSel.size() > 25) {
-                               asciiSel.replace(22, docstring::npos,
-                                                from_ascii("..."));
+                       par.setInsetBuffers(const_cast<Buffer &>(*buf));
+                       textSel += par.asString(AS_STR_INSETS);
+                       if (textSel.size() > 45) {
+                               support::truncateWithEllipsis(textSel,45);
                                break;
                        }
                }
-
-               selList.push_back(asciiSel);
+               selList.push_back(textSel);
        }
 
        return selList;
@@ -788,8 +949,9 @@ size_type numberOfSelections()
        return theCuts.size();
 }
 
+namespace {
 
-void cutSelection(Cursor & cur, bool doclear, bool realcut)
+void cutSelectionHelper(Cursor & cur, CutStack & cuts, bool realcut, bool putclip)
 {
        // This doesn't make sense, if there is no selection
        if (!cur.selection())
@@ -800,7 +962,7 @@ void cutSelection(Cursor & cur, bool doclear, bool realcut)
 
        if (cur.inTexted()) {
                Text * text = cur.text();
-               LASSERT(text, /**/);
+               LBUFERR(text);
 
                saveSelection(cur);
 
@@ -817,21 +979,22 @@ void cutSelection(Cursor & cur, bool doclear, bool realcut)
                                *text,
                                begpit, endpit,
                                cur.selBegin().pos(), endpos,
-                               bp.documentClassPtr(), theCuts);
+                               bp.documentClassPtr(), cuts);
                        // Stuff what we got on the clipboard.
                        // Even if there is no selection.
-                       putClipboard(theCuts[0].first, theCuts[0].second,
-                               cur.selectionAsString(true));
+                       if (putclip)
+                               putClipboard(cuts[0].first, cuts[0].second,
+                                            cur.selectionAsString(true, true), bp);
                }
 
                if (begpit != endpit)
                        cur.screenUpdateFlags(Update::Force | Update::FitCursor);
+               else
+                       cur.screenUpdateFlags(Update::SinglePar | Update::FitCursor);
 
-               boost::tie(endpit, endpos) =
-                       eraseSelectionHelper(bp,
-                               text->paragraphs(),
-                               begpit, endpit,
-                               cur.selBegin().pos(), endpos);
+               tie(endpit, endpos) =
+                       eraseSelectionHelper(bp, text->paragraphs(), begpit, endpit,
+                                            cur.selBegin().pos(), endpos);
 
                // cutSelection can invalidate the cursor so we need to set
                // it anew. (Lgb)
@@ -839,11 +1002,6 @@ void cutSelection(Cursor & cur, bool doclear, bool realcut)
                cur.pos() = endpos;
                cur.pit() = endpit;
 
-               // sometimes necessary
-               if (doclear
-                       && text->paragraphs()[begpit].stripLeadingSpaces(bp.trackChanges))
-                       cur.fixIfBroken();
-
                // need a valid cursor. (Lgb)
                cur.clearSelection();
 
@@ -873,31 +1031,62 @@ void cutSelection(Cursor & cur, bool doclear, bool realcut)
        }
 }
 
+} // namespace
+
+void cutSelection(Cursor & cur, bool realcut)
+{
+       cutSelectionHelper(cur, theCuts, realcut, true);
+}
+
+
+void cutSelectionToTemp(Cursor & cur, bool realcut)
+{
+       cutSelectionHelper(cur, tempCut, realcut, false);
+}
+
 
 void copySelection(Cursor const & cur)
 {
-       copySelection(cur, cur.selectionAsString(true));
+       copySelection(cur, cur.selectionAsString(true, true));
 }
 
 
-void copyInset(Cursor const & cur, Inset * inset, docstring const & plaintext)
+namespace {
+
+void copyInsetToStack(Cursor const & cur, CutStack & cutstack, Inset * inset)
 {
        ParagraphList pars;
        Paragraph par;
        BufferParams const & bp = cur.buffer()->params();
        par.setLayout(bp.documentClass().plainLayout());
-       par.insertInset(0, inset, Change(Change::UNCHANGED));
+       Font font(inherit_font, bp.language);
+       par.insertInset(0, inset, font, Change(Change::UNCHANGED));
        pars.push_back(par);
-       theCuts.push(make_pair(pars, bp.documentClassPtr()));
+       cutstack.push(make_pair(pars, make_pair(bp.documentClassPtr(), bp.authors())));
+}
+
+}
+
+
+void copyInset(Cursor const & cur, Inset * inset, docstring const & plaintext)
+{
+       copyInsetToStack(cur, theCuts, inset);
 
        // stuff the selection onto the X clipboard, from an explicit copy request
-       putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
+       BufferParams const & bp = cur.buffer()->params();
+       putClipboard(theCuts[0].first, theCuts[0].second, plaintext, bp);
+}
+
+
+void copyInsetToTemp(Cursor const & cur, Inset * inset)
+{
+       copyInsetToStack(cur, tempCut, inset);
 }
 
 
 namespace {
 
-void copySelectionToStack(Cursor const & cur, CutStack & cutstack)
+void copySelectionToStack(CursorData const & cur, CutStack & cutstack)
 {
        // this doesn't make sense, if there is no selection
        if (!cur.selection())
@@ -909,23 +1098,14 @@ void copySelectionToStack(Cursor const & cur, CutStack & cutstack)
 
        if (cur.inTexted()) {
                Text * text = cur.text();
-               LASSERT(text, /**/);
+               LBUFERR(text);
                // ok we have a selection. This is always between cur.selBegin()
                // and sel_end cursor
-
-               // copy behind a space if there is one
-               ParagraphList & pars = text->paragraphs();
-               pos_type pos = cur.selBegin().pos();
-               pit_type par = cur.selBegin().pit();
-               while (pos < pars[par].size() &&
-                      pars[par].isLineSeparator(pos) &&
-                      (par != cur.selEnd().pit() || pos < cur.selEnd().pos()))
-                       ++pos;
-
-               copySelectionHelper(*cur.buffer(), *text, par, cur.selEnd().pit(),
-                       pos, cur.selEnd().pos(), 
-                       cur.buffer()->params().documentClassPtr(), cutstack);
-
+               copySelectionHelper(*cur.buffer(), *text,
+                                   cur.selBegin().pit(), cur.selEnd().pit(),
+                                   cur.selBegin().pos(), cur.selEnd().pos(),
+                                   cur.buffer()->params().documentClassPtr(),
+                                   cutstack);
                // Reset the dirty_tabular_stack_ flag only when something
                // is copied to the clipboard (not to the selectionBuffer).
                if (&cutstack == &theCuts)
@@ -939,13 +1119,16 @@ void copySelectionToStack(Cursor const & cur, CutStack & cutstack)
                BufferParams const & bp = cur.buffer()->params();
                // FIXME This should be the plain layout...right?
                par.setLayout(bp.documentClass().plainLayout());
-               par.insert(0, grabSelection(cur), Font(), Change(Change::UNCHANGED));
+               // For pasting into text, we set the language to the paragraph language
+               // (rather than the default_language which is always English; see #2596)
+               par.insert(0, grabSelection(cur), Font(sane_font, par.getParLanguage(bp)),
+                          Change(Change::UNCHANGED));
                pars.push_back(par);
-               cutstack.push(make_pair(pars, bp.documentClassPtr()));
+               cutstack.push(make_pair(pars, make_pair(bp.documentClassPtr(), bp.authors())));
        }
 }
 
-}
+} // namespace
 
 
 void copySelectionToStack()
@@ -955,26 +1138,58 @@ void copySelectionToStack()
 }
 
 
+void copySelectionToTemp(Cursor const & cur)
+{
+       copySelectionToStack(cur, tempCut);
+}
+
+
 void copySelection(Cursor const & cur, docstring const & plaintext)
 {
-       // In tablemode, because copy and paste actually use special table stack
-       // we do not attempt to get selected paragraphs under cursor. Instead, a
-       // paragraph with the plain text version is generated so that table cells
-       // can be pasted as pure text somewhere else.
+       // In tablemode, because copy and paste actually use a special table stack,
+       // we need to go through the cells and collect the paragraphs.
+       // In math matrices, we generate a plain text version.
        if (cur.selBegin().idx() != cur.selEnd().idx()) {
                ParagraphList pars;
-               Paragraph par;
                BufferParams const & bp = cur.buffer()->params();
-               par.setLayout(bp.documentClass().plainLayout());
-               par.insert(0, plaintext, Font(), Change(Change::UNCHANGED));
-               pars.push_back(par);
-               theCuts.push(make_pair(pars, bp.documentClassPtr()));
+               if (cur.inMathed()) {
+                       Paragraph par;
+                       par.setLayout(bp.documentClass().plainLayout());
+                       // Replace (column-separating) tabs by space (#4449)
+                       docstring const clean_text = subst(plaintext, '\t', ' ');
+                       // For pasting into text, we set the language to the paragraph language
+                       // (rather than the default_language which is always English; see #11898)
+                       par.insert(0, clean_text, Font(sane_font, par.getParLanguage(bp)),
+                                  Change(Change::UNCHANGED));
+                       pars.push_back(par);
+               } else {
+                       // Get paragraphs from all cells
+                       InsetTabular * table = cur.inset().asInsetTabular();
+                       LASSERT(table, return);
+                       ParagraphList tplist = table->asParList(cur.selBegin().idx(), cur.selEnd().idx());
+                       for (auto & cpar : tplist) {
+                               cpar.setLayout(bp.documentClass().plainLayout());
+                               pars.push_back(cpar);
+                               // since the pars are merged later, we separate them by blank
+                               Paragraph epar;
+                               epar.insert(0, from_ascii(" "), Font(sane_font, epar.getParLanguage(bp)),
+                                           Change(Change::UNCHANGED));
+                               pars.push_back(epar);
+                       }
+                       // remove last empty par
+                       pars.pop_back();
+                       // merge all paragraphs to one
+                       while (pars.size() > 1)
+                               mergeParagraph(bp, pars, 0);
+               }
+               theCuts.push(make_pair(pars, make_pair(bp.documentClassPtr(), bp.authors())));
        } else {
                copySelectionToStack(cur, theCuts);
        }
 
        // stuff the selection onto the X clipboard, from an explicit copy request
-       putClipboard(theCuts[0].first, theCuts[0].second, plaintext);
+       putClipboard(theCuts[0].first, theCuts[0].second, plaintext,
+                       cur.buffer()->params());
 }
 
 
@@ -983,10 +1198,10 @@ void saveSelection(Cursor const & cur)
        // This function is called, not when a selection is formed, but when
        // a selection is cleared. Therefore, multiple keyboard selection
        // will not repeatively trigger this function (bug 3877).
-       if (cur.selection() 
+       if (cur.selection()
            && cur.selBegin() == cur.bv().cursor().selBegin()
            && cur.selEnd() == cur.bv().cursor().selEnd()) {
-               LYXERR(Debug::SELECTION, "saveSelection: '" << cur.selectionAsString(true) << "'");
+               LYXERR(Debug::SELECTION, "saveSelection: '" << cur.selectionAsString(true, true) << "'");
                copySelectionToStack(cur, selectionBuffer);
        }
 }
@@ -1007,58 +1222,88 @@ void clearSelection()
 void clearCutStack()
 {
        theCuts.clear();
+       tempCut.clear();
 }
 
 
-docstring selection(size_t sel_index)
+docstring selection(size_t sel_index, DocInfoPair docinfo, bool for_math)
 {
-       return sel_index < theCuts.size()
-               ? theCuts[sel_index].first.back().asString(AS_STR_INSETS | AS_STR_NEWLINES)
-               : docstring();
+       if (sel_index >= theCuts.size())
+               return docstring();
+
+       unique_ptr<Buffer> buffer(copyToTempBuffer(theCuts[sel_index].first,
+                                                  docinfo.first));
+       if (!buffer)
+               return docstring();
+
+       int options = AS_STR_INSETS | AS_STR_NEWLINES;
+       if (for_math)
+               options |= AS_STR_MATHED;
+
+       return buffer->paragraphs().back().asString(options);
 }
 
 
 void pasteParagraphList(Cursor & cur, ParagraphList const & parlist,
-                       DocumentClassConstPtr docclass, ErrorList & errorList)
+                       DocumentClassConstPtr docclass, AuthorList const & authors,
+                       ErrorList & errorList,
+                       cap::BranchAction branchAction)
 {
+       // Copy authors to the params. We need those pointers.
+       for (Author const & a : authors)
+               cur.buffer()->params().authors().record(a);
+       
        if (cur.inTexted()) {
                Text * text = cur.text();
-               LASSERT(text, /**/);
+               LBUFERR(text);
 
                PasteReturnValue prv =
-                       pasteSelectionHelper(cur, parlist, docclass, errorList);
-               if (prv.needupdate)
-                       cur.forceBufferUpdate();
+                       pasteSelectionHelper(cur, parlist, docclass, branchAction, errorList);
+               cur.forceBufferUpdate();
                cur.clearSelection();
-               text->setCursor(cur, prv.par, prv.pos);
+               text->setCursor(cur, prv.pit, prv.pos);
        }
 
        // mathed is handled in InsetMathNest/InsetMathGrid
-       LASSERT(!cur.inMathed(), /**/);
+       LATTEST(!cur.inMathed());
 }
 
 
-void pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
+bool pasteFromStack(Cursor & cur, ErrorList & errorList, size_t sel_index)
 {
        // this does not make sense, if there is nothing to paste
        if (!checkPastePossible(sel_index))
-               return;
+               return false;
 
        cur.recordUndo();
        pasteParagraphList(cur, theCuts[sel_index].first,
-                          theCuts[sel_index].second, errorList);
+                          theCuts[sel_index].second.first, theCuts[sel_index].second.second,
+                          errorList, BRANCH_ASK);
+       return true;
+}
+
+
+bool pasteFromTemp(Cursor & cur, ErrorList & errorList)
+{
+       // this does not make sense, if there is nothing to paste
+       if (tempCut.empty() || tempCut[0].first.empty())
+               return false;
+
+       cur.recordUndo();
+       pasteParagraphList(cur, tempCut[0].first,
+                       tempCut[0].second.first, tempCut[0].second.second,
+                       errorList, BRANCH_IGNORE);
+       return true;
 }
 
 
-void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs,
+bool pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs,
                         Clipboard::TextType type)
 {
        // Use internal clipboard if it is the most recent one
        // This overrides asParagraphs and type on purpose!
-       if (theClipboard().isInternal()) {
-               pasteFromStack(cur, errorList, 0);
-               return;
-       }
+       if (theClipboard().isInternal())
+               return pasteFromStack(cur, errorList, 0);
 
        // First try LyX format
        if ((type == Clipboard::LyXTextType ||
@@ -1067,22 +1312,23 @@ void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs,
            theClipboard().hasTextContents(Clipboard::LyXTextType)) {
                string lyx = theClipboard().getAsLyX();
                if (!lyx.empty()) {
-                       // For some strange reason gcc 3.2 and 3.3 do not accept
-                       // Buffer buffer(string(), false);
-                       Buffer buffer("", false);
+                       Buffer buffer(string(), false);
+                       buffer.setInternal(true);
                        buffer.setUnnamed(true);
                        if (buffer.readString(lyx)) {
                                cur.recordUndo();
                                pasteParagraphList(cur, buffer.paragraphs(),
-                                       buffer.params().documentClassPtr(), errorList);
-                               return;
+                                                  buffer.params().documentClassPtr(),
+                                                  buffer.params().authors(),
+                                                  errorList);
+                               return true;
                        }
                }
        }
 
        // Then try TeX and HTML
        Clipboard::TextType types[2] = {Clipboard::HtmlTextType, Clipboard::LaTeXTextType};
-       string names[2] = {"html", "latex"};
+       string names[2] = {"html", "latexclipboard"};
        for (int i = 0; i < 2; ++i) {
                if (type != types[i] && type != Clipboard::AnyTextType)
                        continue;
@@ -1100,15 +1346,24 @@ void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs,
                        docstring text = theClipboard().getAsText(types[i]);
                        available = !text.empty();
                        if (available) {
-                               // For some strange reason gcc 3.2 and 3.3 do not accept
-                               // Buffer buffer(string(), false);
-                               Buffer buffer("", false);
+                               Buffer buffer(string(), false);
+                               buffer.setInternal(true);
                                buffer.setUnnamed(true);
-                               if (buffer.importString(names[i], text, errorList)) {
+                               buffer.params() = cur.buffer()->params();
+                               available = buffer.importString(names[i], text, errorList);
+                               if (available)
+                                       available = !buffer.paragraphs().empty();
+                               if (available && !buffer.paragraphs()[0].empty()) {
+                                       // TeX2lyx (also used in the HTML chain) assumes English as document language
+                                       // if no language is explicitly set (as is the case here).
+                                       // We thus reset the temp buffer's language to the context language
+                                       buffer.changeLanguage(buffer.language(), cur.getFont().language());
                                        cur.recordUndo();
                                        pasteParagraphList(cur, buffer.paragraphs(),
-                                               buffer.params().documentClassPtr(), errorList);
-                                       return;
+                                                          buffer.params().documentClassPtr(),
+                                                          buffer.params().authors(),
+                                                          errorList);
+                                       return true;
                                }
                        }
                }
@@ -1117,12 +1372,14 @@ void pasteClipboardText(Cursor & cur, ErrorList & errorList, bool asParagraphs,
        // Then try plain text
        docstring const text = theClipboard().getAsText(Clipboard::PlainTextType);
        if (text.empty())
-               return;
+               return false;
        cur.recordUndo();
        if (asParagraphs)
                cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
        else
                cur.text()->insertStringAsLines(cur, text, cur.current_font);
+       cur.forceBufferUpdate();
+       return true;
 }
 
 
@@ -1151,7 +1408,7 @@ void pasteSimpleText(Cursor & cur, bool asParagraphs)
                return;
 
        cur.recordUndo();
-       cutSelection(cur, true, false);
+       cutSelection(cur, false);
        if (asParagraphs)
                cur.text()->insertStringAsParagraphs(cur, text, cur.current_font);
        else
@@ -1162,7 +1419,7 @@ void pasteSimpleText(Cursor & cur, bool asParagraphs)
 void pasteClipboardGraphics(Cursor & cur, ErrorList & /* errorList */,
                            Clipboard::GraphicsType preferedType)
 {
-       LASSERT(theClipboard().hasGraphicsContents(preferedType), /**/);
+       LASSERT(theClipboard().hasGraphicsContents(preferedType), return);
 
        // get picture from clipboard
        FileName filename = theClipboard().getAsGraphics(cur, preferedType);
@@ -1185,7 +1442,9 @@ void pasteSelection(Cursor & cur, ErrorList & errorList)
                return;
        cur.recordUndo();
        pasteParagraphList(cur, selectionBuffer[0].first,
-                          selectionBuffer[0].second, errorList);
+                       selectionBuffer[0].second.first,
+                       selectionBuffer[0].second.second,
+                       errorList);
 }
 
 
@@ -1201,20 +1460,20 @@ void replaceSelectionWithString(Cursor & cur, docstring const & str)
        // Insert the new string
        pos_type pos = cur.selEnd().pos();
        Paragraph & par = cur.selEnd().paragraph();
-       docstring::const_iterator cit = str.begin();
-       docstring::const_iterator end = str.end();
-       for (; cit != end; ++cit, ++pos)
-               par.insertChar(pos, *cit, font, cur.buffer()->params().trackChanges);
+       for (auto const & c : str) {
+               par.insertChar(pos, c, font, cur.buffer()->params().track_changes);
+               ++pos;
+       }
 
        // Cut the selection
-       cutSelection(cur, true, false);
+       cutSelection(cur, false);
 }
 
 
 void replaceSelection(Cursor & cur)
 {
        if (cur.selection())
-               cutSelection(cur, true, false);
+               cutSelection(cur, false);
 }
 
 
@@ -1223,31 +1482,43 @@ void eraseSelection(Cursor & cur)
        //lyxerr << "cap::eraseSelection begin: " << cur << endl;
        CursorSlice const & i1 = cur.selBegin();
        CursorSlice const & i2 = cur.selEnd();
-       if (i1.inset().asInsetMath()) {
-               saveSelection(cur);
-               cur.top() = i1;
-               if (i1.idx() == i2.idx()) {
-                       i1.cell().erase(i1.pos(), i2.pos());
-                       // We may have deleted i1.cell(cur.pos()).
-                       // Make sure that pos is valid.
-                       if (cur.pos() > cur.lastpos())
-                               cur.pos() = cur.lastpos();
-               } else {
-                       InsetMath * p = i1.asInsetMath();
-                       Inset::row_type r1, r2;
-                       Inset::col_type c1, c2;
-                       region(i1, i2, r1, r2, c1, c2);
-                       for (Inset::row_type row = r1; row <= r2; ++row)
-                               for (Inset::col_type col = c1; col <= c2; ++col)
-                                       p->cell(p->index(row, col)).clear();
-                       // We've deleted the whole cell. Only pos 0 is valid.
-                       cur.pos() = 0;
-               }
-               // need a valid cursor. (Lgb)
-               cur.clearSelection();
+       if (!i1.asInsetMath()) {
+               LYXERR0("Can't erase this selection");
+               return;
+       }
+
+       saveSelection(cur);
+       cur.top() = i1;
+       InsetMath * p = i1.asInsetMath();
+       if (i1.idx() == i2.idx()) {
+               i1.cell().erase(i1.pos(), i2.pos());
+               // We may have deleted i1.cell(cur.pos()).
+               // Make sure that pos is valid.
+               if (cur.pos() > cur.lastpos())
+                       cur.pos() = cur.lastpos();
+       } else if (p->nrows() > 0 && p->ncols() > 0) {
+               // This is a grid, delete a nice square region
+               row_type r1, r2;
+               col_type c1, c2;
+               region(i1, i2, r1, r2, c1, c2);
+               for (row_type row = r1; row <= r2; ++row)
+                       for (col_type col = c1; col <= c2; ++col)
+                               p->cell(p->index(row, col)).clear();
+               // We've deleted the whole cell. Only pos 0 is valid.
+               cur.pos() = 0;
        } else {
-               lyxerr << "can't erase this selection 1" << endl;
+               idx_type idx1 = i1.idx();
+               idx_type idx2 = i2.idx();
+               if (idx1 > idx2)
+                       swap(idx1, idx2);
+               for (idx_type idx = idx1 ; idx <= idx2; ++idx)
+                       p->cell(idx).clear();
+               // We've deleted the whole cell. Only pos 0 is valid.
+               cur.pos() = 0;
        }
+
+       // need a valid cursor. (Lgb)
+       cur.clearSelection();
        //lyxerr << "cap::eraseSelection end: " << cur << endl;
 }
 
@@ -1266,11 +1537,11 @@ void selClearOrDel(Cursor & cur)
        if (lyxrc.auto_region_delete)
                selDel(cur);
        else
-               cur.setSelection(false);
+               cur.selection(false);
 }
 
 
-docstring grabSelection(Cursor const & cur)
+docstring grabSelection(CursorData const & cur)
 {
        if (!cur.selection())
                return docstring();
@@ -1299,16 +1570,16 @@ docstring grabSelection(Cursor const & cur)
                }
        }
 
-       Inset::row_type r1, r2;
-       Inset::col_type c1, c2;
+       row_type r1, r2;
+       col_type c1, c2;
        region(i1, i2, r1, r2, c1, c2);
 
        docstring data;
        if (i1.inset().asInsetMath()) {
-               for (Inset::row_type row = r1; row <= r2; ++row) {
+               for (row_type row = r1; row <= r2; ++row) {
                        if (row > r1)
                                data += "\\\\";
-                       for (Inset::col_type col = c1; col <= c2; ++col) {
+                       for (col_type col = c1; col <= c2; ++col) {
                                if (col > c1)
                                        data += '&';
                                data += asString(i1.asInsetMath()->