+
+
+// Returns false if no undo possible.
+bool textUndoOrRedo(BufferView & bv,
+ limited_stack<Undo> & stack, limited_stack<Undo> & otherstack)
+{
+ finishUndo();
+
+ if (stack.empty()) {
+ // Nothing to do.
+ return false;
+ }
+
+ // Adjust undo stack and get hold of current undo data.
+ Undo undo = stack.top();
+ stack.pop();
+
+ // We will store in otherstack the part of the document under 'undo'
+ Buffer * buf = bv.buffer();
+ DocIterator cell_dit = undo.cell.asDocIterator(&buf->inset());
+
+ doRecordUndo(Undo::ATOMIC, cell_dit,
+ undo.from, cell_dit.lastpit() - undo.end, bv.cursor(),
+ undo.bparams, undo.isFullBuffer,
+ otherstack);
+
+ // This does the actual undo/redo.
+ //lyxerr << "undo, performing: " << undo << std::endl;
+ DocIterator dit = undo.cell.asDocIterator(&buf->inset());
+ if (undo.isFullBuffer) {
+ // This is a full document
+ otherstack.top().bparams = buf->params();
+ buf->params() = undo.bparams;
+ buf->paragraphs() = undo.pars;
+ } else if (dit.inMathed()) {