commit 360992cb9ff36f882e47036b6f6b1a5e3fe4efd7
Author: Uwe Stöhr <uwesto...@lyx.org>
Date:   Tue Jan 19 22:40:38 2016 +0100

    Revert "Fix the display of column spacing in AMS environments"
    
    This reverts commit bb5470b5d1ec1b2f7394164686d6035a0c4bce0f.
    
    I have no clue what is with my GIT. I apologize. Can anybody please check 
if it is now OK again?

diff --git a/src/mathed/InsetMathGrid.cpp b/src/mathed/InsetMathGrid.cpp
index 0ea62cf..00d9a6f 100644
--- a/src/mathed/InsetMathGrid.cpp
+++ b/src/mathed/InsetMathGrid.cpp
@@ -1,1843 +1,1843 @@
-/**
- * \file InsetMathGrid.cpp
- * This file is part of LyX, the document processor.
- * Licence details can be found in the file COPYING.
- *
- * \author André Pönitz
- *
- * Full author contact details are available in file CREDITS.
- */
-
-#include <config.h>
-#include <algorithm>
-
-#include "InsetMathGrid.h"
-
-#include "InsetMathUnknown.h"
-#include "MathData.h"
-#include "MathParser.h"
-#include "MathStream.h"
-#include "MetricsInfo.h"
-
-#include "Buffer.h"
-#include "BufferParams.h"
-#include "BufferView.h"
-#include "CutAndPaste.h"
-#include "FuncStatus.h"
-#include "Cursor.h"
-#include "FuncRequest.h"
-
-#include "frontends/Clipboard.h"
-#include "frontends/Painter.h"
-
-#include "support/debug.h"
-#include "support/docstream.h"
-#include "support/gettext.h"
-#include "support/lstrings.h"
-
-#include "support/lassert.h"
-
-#include <sstream>
-
-using namespace std;
-using namespace lyx::support;
-
-
-
-namespace lyx {
-
-static docstring verboseHLine(int n)
-{
-       docstring res;
-       for (int i = 0; i < n; ++i)
-               res += "\\hline";
-       if (n)
-               res += ' ';
-       return res;
-}
-
-
-static int extractInt(istream & is)
-{
-       int num = 1;
-       is >> num;
-       return (num == 0) ? 1 : num;
-}
-
-
-static void resetGrid(InsetMathGrid & grid)
-{
-       while (grid.ncols() > 1)
-               grid.delCol(grid.ncols() - 1);
-       while (grid.nrows() > 1)
-               grid.delRow(grid.nrows() - 1);
-       grid.cell(0).erase(0, grid.cell(0).size());
-       grid.setDefaults();
-}
-
-
-
-//////////////////////////////////////////////////////////////
-
-
-InsetMathGrid::CellInfo::CellInfo()
-       : multi_(CELL_NORMAL), glue_(0), begin_(0), end_(0)
-{}
-
-
-
-//////////////////////////////////////////////////////////////
-
-
-InsetMathGrid::RowInfo::RowInfo()
-       : descent_(0), ascent_(0), offset_(0), lines_(0), skip_(0),
-         allow_newpage_(true)
-{}
-
-
-
-int InsetMathGrid::RowInfo::skipPixels(MetricsInfo const & mi) const
-{
-       return crskip_.inPixels(mi.base);
-}
-
-
-
-//////////////////////////////////////////////////////////////
-
-
-InsetMathGrid::ColInfo::ColInfo()
-       : align_('c'), width_(0), offset_(0), lines_(0), skip_(0)
-{}
-
-
-//////////////////////////////////////////////////////////////
-
-
-InsetMathGrid::InsetMathGrid(Buffer * buf)
-       : InsetMathNest(buf, 1),
-         rowinfo_(1 + 1),
-               colinfo_(1 + 1),
-               cellinfo_(1),
-               v_align_('c')
-{
-       setDefaults();
-}
-
-
-InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n)
-       : InsetMathNest(buf, m * n),
-         rowinfo_(n + 1),
-               colinfo_(m + 1),
-               cellinfo_(m * n),
-               v_align_('c')
-{
-       setDefaults();
-}
-
-
-InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n, char v,
-       docstring const & h)
-       : InsetMathNest(buf, m * n),
-         rowinfo_(n + 1),
-         colinfo_(m + 1),
-               cellinfo_(m * n),
-               v_align_(v)
-{
-       setDefaults();
-       setVerticalAlignment(v);
-       setHorizontalAlignments(h);
-}
-
-
-Inset * InsetMathGrid::clone() const
-{
-       return new InsetMathGrid(*this);
-}
-
-
-InsetMath::idx_type InsetMathGrid::index(row_type row, col_type col) const
-{
-       return col + ncols() * row;
-}
-
-
-void InsetMathGrid::setDefaults()
-{
-       if (ncols() <= 0)
-               lyxerr << "positive number of columns expected" << endl;
-       //if (nrows() <= 0)
-       //      lyxerr << "positive number of rows expected" << endl;
-       for (col_type col = 0; col < ncols(); ++col) {
-               colinfo_[col].align_ = defaultColAlign(col);
-               colinfo_[col].skip_  = defaultColSpace(col);
-               colinfo_[col].special_.clear();
-       }
-       for (idx_type idx = 0; idx < nargs(); ++idx)
-               cellinfo_[idx].multi_ = CELL_NORMAL;
-}
-
-
-bool InsetMathGrid::interpretString(Cursor & cur, docstring const & str)
-{
-       if (str == "\\hline") {
-               FuncRequest fr = FuncRequest(LFUN_INSET_MODIFY, "tabular 
add-hline-above");
-               FuncStatus status;
-               if (getStatus(cur, fr, status)) {
-                       if (status.enabled()) {
-                               rowinfo_[cur.row()].lines_++;
-                               return true;
-                       }
-               }
-       }
-       return InsetMathNest::interpretString(cur, str);
-}
-
-
-void InsetMathGrid::setHorizontalAlignments(docstring const & hh)
-{
-       col_type col = 0;
-       for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it) {
-               char_type c = *it;
-               if (c == '|') {
-                       colinfo_[col].lines_++;
-               } else if ((c == 'p' || c == 'm' || c == 'b'||
-                           c == '!' || c == '@' || c == '>' || c == '<') &&
-                          it + 1 != hh.end() && *(it + 1) == '{') {
-                       // @{decl.} and p{width} are standard LaTeX, the
-                       // others are extensions by array.sty
-                       bool const newcolumn = c == 'p' || c == 'm' || c == 'b';
-                       if (newcolumn) {
-                               // this declares a new column
-                               if (col >= ncols())
-                                       // Only intercolumn stuff is allowed
-                                       // in the last dummy column
-                                       break;
-                               colinfo_[col].align_ = 'l';
-                       } else {
-                               // this is intercolumn stuff
-                               if (colinfo_[col].special_.empty())
-                                       // Overtake possible lines
-                                       colinfo_[col].special_ = 
docstring(colinfo_[col].lines_, '|');
-                       }
-                       int brace_open = 0;
-                       int brace_close = 0;
-                       while (it != hh.end()) {
-                               c = *it;
-                               colinfo_[col].special_ += c;
-                               if (c == '{')
-                                       ++brace_open;
-                               else if (c == '}')
-                                       ++brace_close;
-                               ++it;
-                               if (brace_open > 0 && brace_open == brace_close)
-                                       break;
-                       }
-                       --it;
-                       if (newcolumn) {
-                               colinfo_[col].lines_ = count(
-                                       colinfo_[col].special_.begin(),
-                                       colinfo_[col].special_.end(), '|');
-                               LYXERR(Debug::MATHED, "special column 
separator: `"
-                                       << to_utf8(colinfo_[col].special_) << 
'\'');
-                               ++col;
-                               colinfo_[col].lines_ = 0;
-                               colinfo_[col].special_.clear();
-                       }
-               } else if (col >= ncols()) {
-                       // Only intercolumn stuff is allowed in the last
-                       // dummy column
-                       break;
-               } else if (c == 'c' || c == 'l' || c == 'r') {
-                       colinfo_[col].align_ = static_cast<char>(c);
-                       if (!colinfo_[col].special_.empty()) {
-                               colinfo_[col].special_ += c;
-                               colinfo_[col].lines_ = count(
-                                               colinfo_[col].special_.begin(),
-                                               colinfo_[col].special_.end(), 
'|');
-                               LYXERR(Debug::MATHED, "special column 
separator: `"
-                                       << to_utf8(colinfo_[col].special_) << 
'\'');
-                       }
-                       ++col;
-                       colinfo_[col].lines_ = 0;
-                       colinfo_[col].special_.clear();
-               } else {
-                       lyxerr << "unknown column separator: '" << c << "'" << 
endl;
-               }
-       }
-
-/*
-       col_type n = hh.size();
-       if (n > ncols())
-               n = ncols();
-       for (col_type col = 0; col < n; ++col)
-               colinfo_[col].align_ = hh[col];
-*/
-}
-
-
-InsetMathGrid::col_type InsetMathGrid::guessColumns(docstring const & hh)
-{
-       col_type col = 0;
-       for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it)
-               if (*it == 'c' || *it == 'l' || *it == 'r'||
-                   *it == 'p' || *it == 'm' || *it == 'b')
-                       ++col;
-       // let's have at least one column, even if we did not recognize its
-       // alignment
-       if (col == 0)
-               col = 1;
-       return col;
-}
-
-
-void InsetMathGrid::setHorizontalAlignment(char h, col_type col)
-{
-       colinfo_[col].align_ = h;
-       if (!colinfo_[col].special_.empty()) {
-               char_type & c = 
colinfo_[col].special_[colinfo_[col].special_.size() - 1];
-               if (c == 'l' || c == 'c' || c == 'r')
-                       c = h;
-       }
-       // FIXME: Change alignment of p, m and b columns, too
-}
-
-
-char InsetMathGrid::horizontalAlignment(col_type col) const
-{
-       return colinfo_[col].align_;
-}
-
-
-docstring InsetMathGrid::horizontalAlignments() const
-{
-       docstring res;
-       for (col_type col = 0; col < ncols(); ++col) {
-               if (colinfo_[col].special_.empty()) {
-                       res += docstring(colinfo_[col].lines_, '|');
-                       res += colinfo_[col].align_;
-               } else
-                       res += colinfo_[col].special_;
-       }
-       if (colinfo_[ncols()].special_.empty())
-               return res + docstring(colinfo_[ncols()].lines_, '|');
-       return res + colinfo_[ncols()].special_;
-}
-
-
-void InsetMathGrid::setVerticalAlignment(char c)
-{
-       v_align_ = c;
-}
-
-
-char InsetMathGrid::verticalAlignment() const
-{
-       return v_align_;
-}
-
-
-InsetMathGrid::col_type InsetMathGrid::ncols() const
-{
-       return colinfo_.size() - 1;
-}
-
-
-InsetMathGrid::row_type InsetMathGrid::nrows() const
-{
-       return rowinfo_.size() - 1;
-}
-
-
-InsetMathGrid::col_type InsetMathGrid::col(idx_type idx) const
-{
-       return idx % ncols();
-}
-
-
-InsetMathGrid::row_type InsetMathGrid::row(idx_type idx) const
-{
-       return idx / ncols();
-}
-
-
-InsetMathGrid::col_type InsetMathGrid::ncellcols(idx_type idx) const
-{
-       col_type cols = 1;
-       if (cellinfo_[idx].multi_ == CELL_NORMAL)
-               return cols;
-       // If the cell at idx is already CELL_PART_OF_MULTICOLUMN we return
-       // the number of remaining columns, not the ones of the complete
-       // multicolumn cell. This makes it possible to always go to the next
-       // cell with idx + ncellcols(idx) - 1.
-       row_type const r = row(idx);
-       while (idx+cols < nargs() && row(idx+cols) == r &&
-              cellinfo_[idx+cols].multi_ == CELL_PART_OF_MULTICOLUMN)
-               cols++;
-       return cols;
-}
-
-
-void InsetMathGrid::vcrskip(Length const & crskip, row_type row)
-{
-       rowinfo_[row].crskip_ = crskip;
-}
-
-
-Length InsetMathGrid::vcrskip(row_type row) const
-{
-       return rowinfo_[row].crskip_;
-}
-
-
-void InsetMathGrid::metrics(MetricsInfo & mi, Dimension & dim) const
-{
-       // let the cells adjust themselves
-       for (idx_type i = 0; i < nargs(); ++i) {
-               if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
-                       Dimension dimc;
-                       cell(i).metrics(mi, dimc);
-               }
-       }
-
-       BufferView & bv = *mi.base.bv;
-
-       // compute absolute sizes of vertical structure
-       for (row_type row = 0; row < nrows(); ++row) {
-               int asc  = 0;
-               int desc = 0;
-               for (col_type col = 0; col < ncols(); ++col) {
-                       idx_type const i = index(row, col);
-                       if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
-                               Dimension const & dimc = cell(i).dimension(bv);
-                               asc  = max(asc,  dimc.asc);
-                               desc = max(desc, dimc.des);
-                       }
-               }
-               rowinfo_[row].ascent_  = asc;
-               rowinfo_[row].descent_ = desc;
-       }
-       rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
-       rowinfo_[nrows()].ascent_  = 0;
-       rowinfo_[nrows()].descent_ = 0;
-
-       // compute vertical offsets
-       rowinfo_[0].offset_ = 0;
-       for (row_type row = 1; row <= nrows(); ++row) {
-               rowinfo_[row].offset_ =
-                       rowinfo_[row - 1].offset_ +
-                       rowinfo_[row - 1].descent_ +
-                       rowinfo_[row - 1].skipPixels(mi) +
-                       rowsep() +
-                       rowinfo_[row].lines_ * hlinesep() +
-                       rowinfo_[row].ascent_;
-       }
-
-       // adjust vertical offset
-       int h = 0;
-       switch (v_align_) {
-               case 't':
-                       h = 0;
-                       break;
-               case 'b':
-                       h = rowinfo_[nrows() - 1].offset_;
-                       break;
-               default:
-                       h = rowinfo_[nrows() - 1].offset_ / 2;
-       }
-       for (row_type row = 0; row <= nrows(); ++row)
-               rowinfo_[row].offset_ -= h;
-
-
-       // multicolumn cell widths, as a map from first column to width in a
-       // vector of last columns.
-       // This is only used if the grid has more than one row, since for
-       // one-row grids multicolumn cells do not need special handling
-       vector<map<col_type, int> > mcolwidths(ncols());
-
-       // compute absolute sizes of horizontal structure
-       for (col_type col = 0; col < ncols(); ++col) {
-               int wid = 0;
-               for (row_type row = 0; row < nrows(); ++row) {
-                       idx_type const i = index(row, col);
-                       if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
-                               int const w = cell(i).dimension(bv).wid;
-                               col_type const cols = ncellcols(i);
-                               if (cols > 1 && nrows() > 1) {
-                                       col_type last = col+cols-1;
-                                       LASSERT(last < ncols(), last = 
ncols()-1);
-                                       map<col_type, int>::iterator it =
-                                               mcolwidths[last].find(col);
-                                       if (it == mcolwidths[last].end())
-                                               mcolwidths[last][col] = w;
-                                       else
-                                               it->second = max(it->second, w);
-                               } else
-                                       wid = max(wid, w);
-                       }
-               }
-               colinfo_[col].width_ = wid;
-       }
-       colinfo_[ncols()].width_  = 0;
-
-       // compute horizontal offsets
-       colinfo_[0].offset_ = border();
-       for (col_type col = 1; col <= ncols(); ++col) {
-               colinfo_[col].offset_ =
-                       colinfo_[col - 1].offset_ +
+/**
+ * \file InsetMathGrid.cpp
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author André Pönitz
+ *
+ * Full author contact details are available in file CREDITS.
+ */
+
+#include <config.h>
+#include <algorithm>
+
+#include "InsetMathGrid.h"
+
+#include "InsetMathUnknown.h"
+#include "MathData.h"
+#include "MathParser.h"
+#include "MathStream.h"
+#include "MetricsInfo.h"
+
+#include "Buffer.h"
+#include "BufferParams.h"
+#include "BufferView.h"
+#include "CutAndPaste.h"
+#include "FuncStatus.h"
+#include "Cursor.h"
+#include "FuncRequest.h"
+
+#include "frontends/Clipboard.h"
+#include "frontends/Painter.h"
+
+#include "support/debug.h"
+#include "support/docstream.h"
+#include "support/gettext.h"
+#include "support/lstrings.h"
+
+#include "support/lassert.h"
+
+#include <sstream>
+
+using namespace std;
+using namespace lyx::support;
+
+
+
+namespace lyx {
+
+static docstring verboseHLine(int n)
+{
+       docstring res;
+       for (int i = 0; i < n; ++i)
+               res += "\\hline";
+       if (n)
+               res += ' ';
+       return res;
+}
+
+
+static int extractInt(istream & is)
+{
+       int num = 1;
+       is >> num;
+       return (num == 0) ? 1 : num;
+}
+
+
+static void resetGrid(InsetMathGrid & grid)
+{
+       while (grid.ncols() > 1)
+               grid.delCol(grid.ncols() - 1);
+       while (grid.nrows() > 1)
+               grid.delRow(grid.nrows() - 1);
+       grid.cell(0).erase(0, grid.cell(0).size());
+       grid.setDefaults();
+}
+
+
+
+//////////////////////////////////////////////////////////////
+
+
+InsetMathGrid::CellInfo::CellInfo()
+       : multi_(CELL_NORMAL), glue_(0), begin_(0), end_(0)
+{}
+
+
+
+//////////////////////////////////////////////////////////////
+
+
+InsetMathGrid::RowInfo::RowInfo()
+       : descent_(0), ascent_(0), offset_(0), lines_(0), skip_(0),
+         allow_newpage_(true)
+{}
+
+
+
+int InsetMathGrid::RowInfo::skipPixels(MetricsInfo const & mi) const
+{
+       return crskip_.inPixels(mi.base);
+}
+
+
+
+//////////////////////////////////////////////////////////////
+
+
+InsetMathGrid::ColInfo::ColInfo()
+       : align_('c'), width_(0), offset_(0), lines_(0), skip_(0)
+{}
+
+
+//////////////////////////////////////////////////////////////
+
+
+InsetMathGrid::InsetMathGrid(Buffer * buf)
+       : InsetMathNest(buf, 1),
+         rowinfo_(1 + 1),
+               colinfo_(1 + 1),
+               cellinfo_(1),
+               v_align_('c')
+{
+       setDefaults();
+}
+
+
+InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n)
+       : InsetMathNest(buf, m * n),
+         rowinfo_(n + 1),
+               colinfo_(m + 1),
+               cellinfo_(m * n),
+               v_align_('c')
+{
+       setDefaults();
+}
+
+
+InsetMathGrid::InsetMathGrid(Buffer * buf, col_type m, row_type n, char v,
+       docstring const & h)
+       : InsetMathNest(buf, m * n),
+         rowinfo_(n + 1),
+         colinfo_(m + 1),
+               cellinfo_(m * n),
+               v_align_(v)
+{
+       setDefaults();
+       setVerticalAlignment(v);
+       setHorizontalAlignments(h);
+}
+
+
+Inset * InsetMathGrid::clone() const
+{
+       return new InsetMathGrid(*this);
+}
+
+
+InsetMath::idx_type InsetMathGrid::index(row_type row, col_type col) const
+{
+       return col + ncols() * row;
+}
+
+
+void InsetMathGrid::setDefaults()
+{
+       if (ncols() <= 0)
+               lyxerr << "positive number of columns expected" << endl;
+       //if (nrows() <= 0)
+       //      lyxerr << "positive number of rows expected" << endl;
+       for (col_type col = 0; col < ncols(); ++col) {
+               colinfo_[col].align_ = defaultColAlign(col);
+               colinfo_[col].skip_  = defaultColSpace(col);
+               colinfo_[col].special_.clear();
+       }
+       for (idx_type idx = 0; idx < nargs(); ++idx)
+               cellinfo_[idx].multi_ = CELL_NORMAL;
+}
+
+
+bool InsetMathGrid::interpretString(Cursor & cur, docstring const & str)
+{
+       if (str == "\\hline") {
+               FuncRequest fr = FuncRequest(LFUN_INSET_MODIFY, "tabular 
add-hline-above");
+               FuncStatus status;
+               if (getStatus(cur, fr, status)) {
+                       if (status.enabled()) {
+                               rowinfo_[cur.row()].lines_++;
+                               return true;
+                       }
+               }
+       }
+       return InsetMathNest::interpretString(cur, str);
+}
+
+
+void InsetMathGrid::setHorizontalAlignments(docstring const & hh)
+{
+       col_type col = 0;
+       for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it) {
+               char_type c = *it;
+               if (c == '|') {
+                       colinfo_[col].lines_++;
+               } else if ((c == 'p' || c == 'm' || c == 'b'||
+                           c == '!' || c == '@' || c == '>' || c == '<') &&
+                          it + 1 != hh.end() && *(it + 1) == '{') {
+                       // @{decl.} and p{width} are standard LaTeX, the
+                       // others are extensions by array.sty
+                       bool const newcolumn = c == 'p' || c == 'm' || c == 'b';
+                       if (newcolumn) {
+                               // this declares a new column
+                               if (col >= ncols())
+                                       // Only intercolumn stuff is allowed
+                                       // in the last dummy column
+                                       break;
+                               colinfo_[col].align_ = 'l';
+                       } else {
+                               // this is intercolumn stuff
+                               if (colinfo_[col].special_.empty())
+                                       // Overtake possible lines
+                                       colinfo_[col].special_ = 
docstring(colinfo_[col].lines_, '|');
+                       }
+                       int brace_open = 0;
+                       int brace_close = 0;
+                       while (it != hh.end()) {
+                               c = *it;
+                               colinfo_[col].special_ += c;
+                               if (c == '{')
+                                       ++brace_open;
+                               else if (c == '}')
+                                       ++brace_close;
+                               ++it;
+                               if (brace_open > 0 && brace_open == brace_close)
+                                       break;
+                       }
+                       --it;
+                       if (newcolumn) {
+                               colinfo_[col].lines_ = count(
+                                       colinfo_[col].special_.begin(),
+                                       colinfo_[col].special_.end(), '|');
+                               LYXERR(Debug::MATHED, "special column 
separator: `"
+                                       << to_utf8(colinfo_[col].special_) << 
'\'');
+                               ++col;
+                               colinfo_[col].lines_ = 0;
+                               colinfo_[col].special_.clear();
+                       }
+               } else if (col >= ncols()) {
+                       // Only intercolumn stuff is allowed in the last
+                       // dummy column
+                       break;
+               } else if (c == 'c' || c == 'l' || c == 'r') {
+                       colinfo_[col].align_ = static_cast<char>(c);
+                       if (!colinfo_[col].special_.empty()) {
+                               colinfo_[col].special_ += c;
+                               colinfo_[col].lines_ = count(
+                                               colinfo_[col].special_.begin(),
+                                               colinfo_[col].special_.end(), 
'|');
+                               LYXERR(Debug::MATHED, "special column 
separator: `"
+                                       << to_utf8(colinfo_[col].special_) << 
'\'');
+                       }
+                       ++col;
+                       colinfo_[col].lines_ = 0;
+                       colinfo_[col].special_.clear();
+               } else {
+                       lyxerr << "unknown column separator: '" << c << "'" << 
endl;
+               }
+       }
+
+/*
+       col_type n = hh.size();
+       if (n > ncols())
+               n = ncols();
+       for (col_type col = 0; col < n; ++col)
+               colinfo_[col].align_ = hh[col];
+*/
+}
+
+
+InsetMathGrid::col_type InsetMathGrid::guessColumns(docstring const & hh)
+{
+       col_type col = 0;
+       for (docstring::const_iterator it = hh.begin(); it != hh.end(); ++it)
+               if (*it == 'c' || *it == 'l' || *it == 'r'||
+                   *it == 'p' || *it == 'm' || *it == 'b')
+                       ++col;
+       // let's have at least one column, even if we did not recognize its
+       // alignment
+       if (col == 0)
+               col = 1;
+       return col;
+}
+
+
+void InsetMathGrid::setHorizontalAlignment(char h, col_type col)
+{
+       colinfo_[col].align_ = h;
+       if (!colinfo_[col].special_.empty()) {
+               char_type & c = 
colinfo_[col].special_[colinfo_[col].special_.size() - 1];
+               if (c == 'l' || c == 'c' || c == 'r')
+                       c = h;
+       }
+       // FIXME: Change alignment of p, m and b columns, too
+}
+
+
+char InsetMathGrid::horizontalAlignment(col_type col) const
+{
+       return colinfo_[col].align_;
+}
+
+
+docstring InsetMathGrid::horizontalAlignments() const
+{
+       docstring res;
+       for (col_type col = 0; col < ncols(); ++col) {
+               if (colinfo_[col].special_.empty()) {
+                       res += docstring(colinfo_[col].lines_, '|');
+                       res += colinfo_[col].align_;
+               } else
+                       res += colinfo_[col].special_;
+       }
+       if (colinfo_[ncols()].special_.empty())
+               return res + docstring(colinfo_[ncols()].lines_, '|');
+       return res + colinfo_[ncols()].special_;
+}
+
+
+void InsetMathGrid::setVerticalAlignment(char c)
+{
+       v_align_ = c;
+}
+
+
+char InsetMathGrid::verticalAlignment() const
+{
+       return v_align_;
+}
+
+
+InsetMathGrid::col_type InsetMathGrid::ncols() const
+{
+       return colinfo_.size() - 1;
+}
+
+
+InsetMathGrid::row_type InsetMathGrid::nrows() const
+{
+       return rowinfo_.size() - 1;
+}
+
+
+InsetMathGrid::col_type InsetMathGrid::col(idx_type idx) const
+{
+       return idx % ncols();
+}
+
+
+InsetMathGrid::row_type InsetMathGrid::row(idx_type idx) const
+{
+       return idx / ncols();
+}
+
+
+InsetMathGrid::col_type InsetMathGrid::ncellcols(idx_type idx) const
+{
+       col_type cols = 1;
+       if (cellinfo_[idx].multi_ == CELL_NORMAL)
+               return cols;
+       // If the cell at idx is already CELL_PART_OF_MULTICOLUMN we return
+       // the number of remaining columns, not the ones of the complete
+       // multicolumn cell. This makes it possible to always go to the next
+       // cell with idx + ncellcols(idx) - 1.
+       row_type const r = row(idx);
+       while (idx+cols < nargs() && row(idx+cols) == r &&
+              cellinfo_[idx+cols].multi_ == CELL_PART_OF_MULTICOLUMN)
+               cols++;
+       return cols;
+}
+
+
+void InsetMathGrid::vcrskip(Length const & crskip, row_type row)
+{
+       rowinfo_[row].crskip_ = crskip;
+}
+
+
+Length InsetMathGrid::vcrskip(row_type row) const
+{
+       return rowinfo_[row].crskip_;
+}
+
+
+void InsetMathGrid::metrics(MetricsInfo & mi, Dimension & dim) const
+{
+       // let the cells adjust themselves
+       for (idx_type i = 0; i < nargs(); ++i) {
+               if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
+                       Dimension dimc;
+                       cell(i).metrics(mi, dimc);
+               }
+       }
+
+       BufferView & bv = *mi.base.bv;
+
+       // compute absolute sizes of vertical structure
+       for (row_type row = 0; row < nrows(); ++row) {
+               int asc  = 0;
+               int desc = 0;
+               for (col_type col = 0; col < ncols(); ++col) {
+                       idx_type const i = index(row, col);
+                       if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
+                               Dimension const & dimc = cell(i).dimension(bv);
+                               asc  = max(asc,  dimc.asc);
+                               desc = max(desc, dimc.des);
+                       }
+               }
+               rowinfo_[row].ascent_  = asc;
+               rowinfo_[row].descent_ = desc;
+       }
+       rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
+       rowinfo_[nrows()].ascent_  = 0;
+       rowinfo_[nrows()].descent_ = 0;
+
+       // compute vertical offsets
+       rowinfo_[0].offset_ = 0;
+       for (row_type row = 1; row <= nrows(); ++row) {
+               rowinfo_[row].offset_ =
+                       rowinfo_[row - 1].offset_ +
+                       rowinfo_[row - 1].descent_ +
+                       rowinfo_[row - 1].skipPixels(mi) +
+                       rowsep() +
+                       rowinfo_[row].lines_ * hlinesep() +
+                       rowinfo_[row].ascent_;
+       }
+
+       // adjust vertical offset
+       int h = 0;
+       switch (v_align_) {
+               case 't':
+                       h = 0;
+                       break;
+               case 'b':
+                       h = rowinfo_[nrows() - 1].offset_;
+                       break;
+               default:
+                       h = rowinfo_[nrows() - 1].offset_ / 2;
+       }
+       for (row_type row = 0; row <= nrows(); ++row)
+               rowinfo_[row].offset_ -= h;
+
+
+       // multicolumn cell widths, as a map from first column to width in a
+       // vector of last columns.
+       // This is only used if the grid has more than one row, since for
+       // one-row grids multicolumn cells do not need special handling
+       vector<map<col_type, int> > mcolwidths(ncols());
+
+       // compute absolute sizes of horizontal structure
+       for (col_type col = 0; col < ncols(); ++col) {
+               int wid = 0;
+               for (row_type row = 0; row < nrows(); ++row) {
+                       idx_type const i = index(row, col);
+                       if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
+                               int const w = cell(i).dimension(bv).wid;
+                               col_type const cols = ncellcols(i);
+                               if (cols > 1 && nrows() > 1) {
+                                       col_type last = col+cols-1;
+                                       LASSERT(last < ncols(), last = 
ncols()-1);
+                                       map<col_type, int>::iterator it =
+                                               mcolwidths[last].find(col);
+                                       if (it == mcolwidths[last].end())
+                                               mcolwidths[last][col] = w;
+                                       else
+                                               it->second = max(it->second, w);
+                               } else
+                                       wid = max(wid, w);
+                       }
+               }
+               colinfo_[col].width_ = wid;
+       }
+       colinfo_[ncols()].width_  = 0;
+
+       // compute horizontal offsets
+       colinfo_[0].offset_ = border();
+       for (col_type col = 1; col <= ncols(); ++col) {
+               colinfo_[col].offset_ =
+                       colinfo_[col - 1].offset_ +
                        colinfo_[col - 1].width_ +
-                       displayColSpace(col - 1) +
+                       colinfo_[col - 1].skip_ +
                        colsep() +
-                       colinfo_[col].lines_ * vlinesep();
-       }
-
-       // increase column widths for multicolumn cells if needed
-       // FIXME: multicolumn lines are not yet considered
-       for (col_type last = 0; last < ncols(); ++last) {
-               map<col_type, int> const & widths = mcolwidths[last];
-               // We increase the width of the last column of the multicol
-               // cell (some sort of left alignment). Since we iterate through
-               // the last and the first columns from left to right, we ensure
-               // that increased widths of previous columns are correctly
-               // taken into account for later columns, thus preventing
-               // unneeded width increasing.
-               for (map<col_type, int>::const_iterator it = widths.begin();
-                    it != widths.end(); ++it) {
-                       int const wid = it->second;
-                       col_type const first = it->first;
-                       int const nextoffset =
-                               colinfo_[first].offset_ +
-                               wid +
+                       colinfo_[col].lines_ * vlinesep();
+       }
+
+       // increase column widths for multicolumn cells if needed
+       // FIXME: multicolumn lines are not yet considered
+       for (col_type last = 0; last < ncols(); ++last) {
+               map<col_type, int> const & widths = mcolwidths[last];
+               // We increase the width of the last column of the multicol
+               // cell (some sort of left alignment). Since we iterate through
+               // the last and the first columns from left to right, we ensure
+               // that increased widths of previous columns are correctly
+               // taken into account for later columns, thus preventing
+               // unneeded width increasing.
+               for (map<col_type, int>::const_iterator it = widths.begin();
+                    it != widths.end(); ++it) {
+                       int const wid = it->second;
+                       col_type const first = it->first;
+                       int const nextoffset =
+                               colinfo_[first].offset_ +
+                               wid +
                                colinfo_[last].skip_ +
-                               colsep() +
-                               colinfo_[last+1].lines_ * vlinesep();
-                       int const dx = nextoffset - colinfo_[last+1].offset_;
-                       if (dx > 0) {
-                               colinfo_[last].width_ += dx;
-                               for (col_type col = last + 1; col <= ncols(); 
++col)
-                                       colinfo_[col].offset_ += dx;
-                       }
-               }
-       }
-
-
-       dim.wid = colinfo_[ncols() - 1].offset_
-               + colinfo_[ncols() - 1].width_
-               + vlinesep() * colinfo_[ncols()].lines_
-               + border();
-
-       dim.asc = - rowinfo_[0].offset_
-               + rowinfo_[0].ascent_
-               + hlinesep() * rowinfo_[0].lines_
-               + border();
-
-       dim.des = rowinfo_[nrows() - 1].offset_
-               + rowinfo_[nrows() - 1].descent_
-               + hlinesep() * rowinfo_[nrows()].lines_
-               + border();
-
-
-/*
-       // Increase ws_[i] for 'R' columns (except the first one)
-       for (int i = 1; i < nc_; ++i)
-               if (align_[i] == 'R')
-                       ws_[i] += 10 * df_width;
-       // Increase ws_[i] for 'C' column
-       if (align_[0] == 'C')
-               if (ws_[0] < 7 * workwidth / 8)
-                       ws_[0] = 7 * workwidth / 8;
-
-       // Adjust local tabs
-       width = colsep();
-       for (cxrow = row_.begin(); cxrow; ++cxrow) {
-               int rg = COLSEP;
-               int lf = 0;
-               for (int i = 0; i < nc_; ++i) {
-                       bool isvoid = false;
-                       if (cxrow->getTab(i) <= 0) {
-                               cxrow->setTab(i, df_width);
-                               isvoid = true;
-                       }
-                       switch (align_[i]) {
-                       case 'l':
-                               lf = 0;
-                               break;
-                       case 'c':
-                               lf = (ws_[i] - cxrow->getTab(i))/2;
-                               break;
-                       case 'r':
-                       case 'R':
-                               lf = ws_[i] - cxrow->getTab(i);
-                               break;
-                       case 'C':
-                               if (cxrow == row_.begin())
-                                       lf = 0;
-                               else if (cxrow.is_last())
-                                       lf = ws_[i] - cxrow->getTab(i);
-                               else
-                                       lf = (ws_[i] - cxrow->getTab(i))/2;
-                               break;
-                       }
-                       int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
-                       cxrow->setTab(i, lf + rg);
-                       rg = ws_[i] - ww + colsep();
-                       if (cxrow == row_.begin())
-                               width += ws_[i] + colsep();
-               }
-               cxrow->setBaseline(cxrow->getBaseline() - ascent);
-       }
-*/
-       metricsMarkers2(dim);
-       // Cache the inset dimension.
-       setDimCache(mi, dim);
-}
-
-
-void InsetMathGrid::draw(PainterInfo & pi, int x, int y) const
-{
-       drawWithMargin(pi, x, y, 1, 1);
-}
-
-
-void InsetMathGrid::drawWithMargin(PainterInfo & pi, int x, int y,
-       int lmargin, int rmargin) const
-{
-       Dimension const dim = dimension(*pi.base.bv);
-       BufferView const & bv = *pi.base.bv;
-
-       for (idx_type idx = 0; idx < nargs(); ++idx) {
-               if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN) {
-                       cell(idx).draw(pi,
-                               x + lmargin + cellXOffset(bv, idx),
-                               y + cellYOffset(idx));
-
-                       // draw inner lines cell by cell because of possible 
multicolumns
-                       // FIXME: multicolumn lines are not yet considered
-                       row_type const r = row(idx);
-                       col_type const c = col(idx);
-                       if (r > 0 && r < nrows()) {
-                               for (unsigned int i = 0; i < 
rowinfo_[r].lines_; ++i) {
-                                       int yy = y + rowinfo_[r].offset_
-                                               - rowinfo_[r].ascent_
-                                               - i * hlinesep()
-                                               - hlinesep()/2 - rowsep()/2;
-                                       pi.pain.line(
-                                               x + lmargin + 
colinfo_[c].offset_,
-                                               yy,
-                                               x + lmargin + 
colinfo_[c+1].offset_,
-                                               yy, Color_foreground);
-                               }
-                       }
-                       if (c > 0 && c < ncols()) {
-                               for (unsigned int i = 0; i < 
colinfo_[c].lines_; ++i) {
-                                       int xx = x + lmargin
-                                               + colinfo_[c].offset_
-                                               - i * vlinesep()
-                                               - vlinesep()/2 - colsep()/2;
-                                       pi.pain.line(xx,
-                                               rowinfo_[r].offset_ - 
rowinfo_[r].ascent_,
-                                               xx,
-                                               rowinfo_[r].offset_ + 
rowinfo_[r].descent_,
-                                               Color_foreground);
-                               }
-                       }
-               }
-       }
-
-       // draw outer lines in one go
-       for (row_type row = 0; row <= nrows(); row += nrows())
-               for (unsigned int i = 0; i < rowinfo_[row].lines_; ++i) {
-                       int yy = y + rowinfo_[row].offset_ - 
rowinfo_[row].ascent_
-                               - i * hlinesep() - hlinesep()/2 - rowsep()/2;
-                       pi.pain.line(x + lmargin + 1, yy,
-                                    x + dim.width() - rmargin - 1, yy,
-                                    Color_foreground);
-               }
-
-       for (col_type col = 0; col <= ncols(); col += ncols())
-               for (unsigned int i = 0; i < colinfo_[col].lines_; ++i) {
-                       int xx = x + lmargin + colinfo_[col].offset_
-                               - i * vlinesep() - vlinesep()/2 - colsep()/2;
-                       pi.pain.line(xx, y - dim.ascent() + 1,
-                                    xx, y + dim.descent() - 1,
-                                    Color_foreground);
-               }
-       drawMarkers2(pi, x, y);
-}
-
-
-void InsetMathGrid::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
-{
-       // let the cells adjust themselves
-       for (idx_type i = 0; i < nargs(); ++i)
-               if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
-                       cell(i).metricsT(mi, dim);
-
-       // compute absolute sizes of vertical structure
-       for (row_type row = 0; row < nrows(); ++row) {
-               int asc  = 0;
-               int desc = 0;
-               for (col_type col = 0; col < ncols(); ++col) {
-                       idx_type const i = index(row, col);
-                       if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
-                               //MathData const & c = cell(i);
-                               // FIXME: BROKEN!
-                               Dimension dimc;
-                               asc  = max(asc,  dimc.ascent());
-                               desc = max(desc, dimc.descent());
-                       }
-               }
-               rowinfo_[row].ascent_  = asc;
-               rowinfo_[row].descent_ = desc;
-       }
-       //rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
-       rowinfo_[nrows()].ascent_  = 0;
-       rowinfo_[nrows()].descent_ = 0;
-
-       // compute vertical offsets
-       rowinfo_[0].offset_ = 0;
-       for (row_type row = 1; row <= nrows(); ++row) {
-               rowinfo_[row].offset_  =
-                       rowinfo_[row - 1].offset_  +
-                       rowinfo_[row - 1].descent_ +
-                       //rowinfo_[row - 1].skipPixels(mi) +
-                       1 + //rowsep() +
-                       //rowinfo_[row].lines_ * hlinesep() +
-                       rowinfo_[row].ascent_;
-       }
-
-       // adjust vertical offset
-       int h = 0;
-       switch (v_align_) {
-               case 't':
-                       h = 0;
-                       break;
-               case 'b':
-                       h = rowinfo_[nrows() - 1].offset_;
-                       break;
-               default:
-                       h = rowinfo_[nrows() - 1].offset_ / 2;
-       }
-       for (row_type row = 0; row <= nrows(); ++row)
-               rowinfo_[row].offset_ -= h;
-
-
-       // compute absolute sizes of horizontal structure
-       for (col_type col = 0; col < ncols(); ++col) {
-               int wid = 0;
-               for (row_type row = 0; row < nrows(); ++row) {
-                       // FIXME: BROKEN!
-                       //idx_type const i = index(row, col);
-                       //if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
-                       //      wid = max(wid, cell(i).width());
-               }
-               colinfo_[col].width_ = wid;
-       }
-       colinfo_[ncols()].width_  = 0;
-
-       // compute horizontal offsets
-       colinfo_[0].offset_ = border();
-       for (col_type col = 1; col <= ncols(); ++col) {
-               colinfo_[col].offset_ =
-                       colinfo_[col - 1].offset_ +
-                       colinfo_[col - 1].width_ +
+                               colsep() +
+                               colinfo_[last+1].lines_ * vlinesep();
+                       int const dx = nextoffset - colinfo_[last+1].offset_;
+                       if (dx > 0) {
+                               colinfo_[last].width_ += dx;
+                               for (col_type col = last + 1; col <= ncols(); 
++col)
+                                       colinfo_[col].offset_ += dx;
+                       }
+               }
+       }
+
+
+       dim.wid = colinfo_[ncols() - 1].offset_
+               + colinfo_[ncols() - 1].width_
+               + vlinesep() * colinfo_[ncols()].lines_
+               + border();
+
+       dim.asc = - rowinfo_[0].offset_
+               + rowinfo_[0].ascent_
+               + hlinesep() * rowinfo_[0].lines_
+               + border();
+
+       dim.des = rowinfo_[nrows() - 1].offset_
+               + rowinfo_[nrows() - 1].descent_
+               + hlinesep() * rowinfo_[nrows()].lines_
+               + border();
+
+
+/*
+       // Increase ws_[i] for 'R' columns (except the first one)
+       for (int i = 1; i < nc_; ++i)
+               if (align_[i] == 'R')
+                       ws_[i] += 10 * df_width;
+       // Increase ws_[i] for 'C' column
+       if (align_[0] == 'C')
+               if (ws_[0] < 7 * workwidth / 8)
+                       ws_[0] = 7 * workwidth / 8;
+
+       // Adjust local tabs
+       width = colsep();
+       for (cxrow = row_.begin(); cxrow; ++cxrow) {
+               int rg = COLSEP;
+               int lf = 0;
+               for (int i = 0; i < nc_; ++i) {
+                       bool isvoid = false;
+                       if (cxrow->getTab(i) <= 0) {
+                               cxrow->setTab(i, df_width);
+                               isvoid = true;
+                       }
+                       switch (align_[i]) {
+                       case 'l':
+                               lf = 0;
+                               break;
+                       case 'c':
+                               lf = (ws_[i] - cxrow->getTab(i))/2;
+                               break;
+                       case 'r':
+                       case 'R':
+                               lf = ws_[i] - cxrow->getTab(i);
+                               break;
+                       case 'C':
+                               if (cxrow == row_.begin())
+                                       lf = 0;
+                               else if (cxrow.is_last())
+                                       lf = ws_[i] - cxrow->getTab(i);
+                               else
+                                       lf = (ws_[i] - cxrow->getTab(i))/2;
+                               break;
+                       }
+                       int const ww = (isvoid) ? lf : lf + cxrow->getTab(i);
+                       cxrow->setTab(i, lf + rg);
+                       rg = ws_[i] - ww + colsep();
+                       if (cxrow == row_.begin())
+                               width += ws_[i] + colsep();
+               }
+               cxrow->setBaseline(cxrow->getBaseline() - ascent);
+       }
+*/
+       metricsMarkers2(dim);
+       // Cache the inset dimension.
+       setDimCache(mi, dim);
+}
+
+
+void InsetMathGrid::draw(PainterInfo & pi, int x, int y) const
+{
+       drawWithMargin(pi, x, y, 1, 1);
+}
+
+
+void InsetMathGrid::drawWithMargin(PainterInfo & pi, int x, int y,
+       int lmargin, int rmargin) const
+{
+       Dimension const dim = dimension(*pi.base.bv);
+       BufferView const & bv = *pi.base.bv;
+
+       for (idx_type idx = 0; idx < nargs(); ++idx) {
+               if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN) {
+                       cell(idx).draw(pi,
+                               x + lmargin + cellXOffset(bv, idx),
+                               y + cellYOffset(idx));
+
+                       // draw inner lines cell by cell because of possible 
multicolumns
+                       // FIXME: multicolumn lines are not yet considered
+                       row_type const r = row(idx);
+                       col_type const c = col(idx);
+                       if (r > 0 && r < nrows()) {
+                               for (unsigned int i = 0; i < 
rowinfo_[r].lines_; ++i) {
+                                       int yy = y + rowinfo_[r].offset_
+                                               - rowinfo_[r].ascent_
+                                               - i * hlinesep()
+                                               - hlinesep()/2 - rowsep()/2;
+                                       pi.pain.line(
+                                               x + lmargin + 
colinfo_[c].offset_,
+                                               yy,
+                                               x + lmargin + 
colinfo_[c+1].offset_,
+                                               yy, Color_foreground);
+                               }
+                       }
+                       if (c > 0 && c < ncols()) {
+                               for (unsigned int i = 0; i < 
colinfo_[c].lines_; ++i) {
+                                       int xx = x + lmargin
+                                               + colinfo_[c].offset_
+                                               - i * vlinesep()
+                                               - vlinesep()/2 - colsep()/2;
+                                       pi.pain.line(xx,
+                                               rowinfo_[r].offset_ - 
rowinfo_[r].ascent_,
+                                               xx,
+                                               rowinfo_[r].offset_ + 
rowinfo_[r].descent_,
+                                               Color_foreground);
+                               }
+                       }
+               }
+       }
+
+       // draw outer lines in one go
+       for (row_type row = 0; row <= nrows(); row += nrows())
+               for (unsigned int i = 0; i < rowinfo_[row].lines_; ++i) {
+                       int yy = y + rowinfo_[row].offset_ - 
rowinfo_[row].ascent_
+                               - i * hlinesep() - hlinesep()/2 - rowsep()/2;
+                       pi.pain.line(x + lmargin + 1, yy,
+                                    x + dim.width() - rmargin - 1, yy,
+                                    Color_foreground);
+               }
+
+       for (col_type col = 0; col <= ncols(); col += ncols())
+               for (unsigned int i = 0; i < colinfo_[col].lines_; ++i) {
+                       int xx = x + lmargin + colinfo_[col].offset_
+                               - i * vlinesep() - vlinesep()/2 - colsep()/2;
+                       pi.pain.line(xx, y - dim.ascent() + 1,
+                                    xx, y + dim.descent() - 1,
+                                    Color_foreground);
+               }
+       drawMarkers2(pi, x, y);
+}
+
+
+void InsetMathGrid::metricsT(TextMetricsInfo const & mi, Dimension & dim) const
+{
+       // let the cells adjust themselves
+       for (idx_type i = 0; i < nargs(); ++i)
+               if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
+                       cell(i).metricsT(mi, dim);
+
+       // compute absolute sizes of vertical structure
+       for (row_type row = 0; row < nrows(); ++row) {
+               int asc  = 0;
+               int desc = 0;
+               for (col_type col = 0; col < ncols(); ++col) {
+                       idx_type const i = index(row, col);
+                       if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
+                               //MathData const & c = cell(i);
+                               // FIXME: BROKEN!
+                               Dimension dimc;
+                               asc  = max(asc,  dimc.ascent());
+                               desc = max(desc, dimc.descent());
+                       }
+               }
+               rowinfo_[row].ascent_  = asc;
+               rowinfo_[row].descent_ = desc;
+       }
+       //rowinfo_[0].ascent_       += hlinesep() * rowinfo_[0].lines_;
+       rowinfo_[nrows()].ascent_  = 0;
+       rowinfo_[nrows()].descent_ = 0;
+
+       // compute vertical offsets
+       rowinfo_[0].offset_ = 0;
+       for (row_type row = 1; row <= nrows(); ++row) {
+               rowinfo_[row].offset_  =
+                       rowinfo_[row - 1].offset_  +
+                       rowinfo_[row - 1].descent_ +
+                       //rowinfo_[row - 1].skipPixels(mi) +
+                       1 + //rowsep() +
+                       //rowinfo_[row].lines_ * hlinesep() +
+                       rowinfo_[row].ascent_;
+       }
+
+       // adjust vertical offset
+       int h = 0;
+       switch (v_align_) {
+               case 't':
+                       h = 0;
+                       break;
+               case 'b':
+                       h = rowinfo_[nrows() - 1].offset_;
+                       break;
+               default:
+                       h = rowinfo_[nrows() - 1].offset_ / 2;
+       }
+       for (row_type row = 0; row <= nrows(); ++row)
+               rowinfo_[row].offset_ -= h;
+
+
+       // compute absolute sizes of horizontal structure
+       for (col_type col = 0; col < ncols(); ++col) {
+               int wid = 0;
+               for (row_type row = 0; row < nrows(); ++row) {
+                       // FIXME: BROKEN!
+                       //idx_type const i = index(row, col);
+                       //if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN)
+                       //      wid = max(wid, cell(i).width());
+               }
+               colinfo_[col].width_ = wid;
+       }
+       colinfo_[ncols()].width_  = 0;
+
+       // compute horizontal offsets
+       colinfo_[0].offset_ = border();
+       for (col_type col = 1; col <= ncols(); ++col) {
+               colinfo_[col].offset_ =
+                       colinfo_[col - 1].offset_ +
+                       colinfo_[col - 1].width_ +
                        colinfo_[col - 1].skip_ +
-                       1 ; //colsep() +
-                       //colinfo_[col].lines_ * vlinesep();
-       }
-
-
-       dim.wid  =  colinfo_[ncols() - 1].offset_
-                      + colinfo_[ncols() - 1].width_
-                //+ vlinesep() * colinfo_[ncols()].lines_
-                      + 2;
-
-       dim.asc  = -rowinfo_[0].offset_
-                      + rowinfo_[0].ascent_
-                //+ hlinesep() * rowinfo_[0].lines_
-                      + 1;
-
-       dim.des  =  rowinfo_[nrows() - 1].offset_
-                      + rowinfo_[nrows() - 1].descent_
-                //+ hlinesep() * rowinfo_[nrows()].lines_
-                      + 1;
-}
-
-
-void InsetMathGrid::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
-{
-//     for (idx_type idx = 0; idx < nargs(); ++idx)
-//             if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
-//                     cell(idx).drawT(pain, x + cellXOffset(idx), y + 
cellYOffset(idx));
-}
-
-
-void InsetMathGrid::updateBuffer(ParIterator const & it, UpdateType utype)
-{
-       // pass down
-       for (idx_type idx = 0; idx < nargs(); ++idx)
-               if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
-                       cell(idx).updateBuffer(it, utype);
-}
-
-
-docstring InsetMathGrid::eolString(row_type row, bool fragile,
-               bool /*latex*/, bool last_eoln) const
-{
-       docstring eol;
-
-       if (!rowinfo_[row].crskip_.zero())
-               eol += '[' + from_utf8(rowinfo_[row].crskip_.asLatexString()) + 
']';
-       else if(!rowinfo_[row].allow_newpage_)
-               eol += '*';
-
-       // make sure an upcoming '[' does not break anything
-       if (row + 1 < nrows()) {
-               MathData const & c = cell(index(row + 1, 0));
-               if (!c.empty() && c.front()->getChar() == '[')
-                       //eol += "[0pt]";
-                       eol += "{}";
-       }
-
-       // only add \\ if necessary
-       if (eol.empty() && row + 1 == nrows() && (nrows() == 1 || !last_eoln))
-               return docstring();
-
-       return (fragile ? "\\protect\\\\" : "\\\\") + eol;
-}
-
-
-docstring InsetMathGrid::eocString(col_type col, col_type lastcol) const
-{
-       if (col + 1 == lastcol)
-               return docstring();
-       return from_ascii(" & ");
-}
-
-
-void InsetMathGrid::addRow(row_type row)
-{
-       rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
-       cells_.insert
-               (cells_.begin() + (row + 1) * ncols(), ncols(), MathData());
-       cellinfo_.insert
-               (cellinfo_.begin() + (row + 1) * ncols(), ncols(), CellInfo());
-}
-
-
-void InsetMathGrid::delRow(row_type row)
-{
-       if (nrows() == 1)
-               return;
-
-       cells_type::iterator it = cells_.begin() + row * ncols();
-       cells_.erase(it, it + ncols());
-
-       vector<CellInfo>::iterator jt = cellinfo_.begin() + row * ncols();
-       cellinfo_.erase(jt, jt + ncols());
-
-       rowinfo_.erase(rowinfo_.begin() + row);
-}
-
-
-void InsetMathGrid::copyRow(row_type row)
-{
-       addRow(row);
-       for (col_type col = 0; col < ncols(); ++col)
-               cells_[(row + 1) * ncols() + col] = cells_[row * ncols() + col];
-}
-
-
-void InsetMathGrid::swapRow(row_type row)
-{
-       if (nrows() == 1)
-               return;
-       if (row + 1 == nrows())
-               --row;
-       for (col_type col = 0; col < ncols(); ++col)
-               swap(cells_[row * ncols() + col], cells_[(row + 1) * ncols() + 
col]);
-}
-
-
-void InsetMathGrid::addCol(col_type newcol)
-{
-       const col_type nc = ncols();
-       const row_type nr = nrows();
-       cells_type new_cells((nc + 1) * nr);
-       vector<CellInfo> new_cellinfo((nc + 1) * nr);
-
-       for (row_type row = 0; row < nr; ++row)
-               for (col_type col = 0; col < nc; ++col) {
-                       new_cells[row * (nc + 1) + col + (col >= newcol)]
-                               = cells_[row * nc + col];
-                       new_cellinfo[row * (nc + 1) + col + (col >= newcol)]
-                               = cellinfo_[row * nc + col];
-               }
-       swap(cells_, new_cells);
-       swap(cellinfo_, new_cellinfo);
-
-       ColInfo inf;
-       inf.skip_  = defaultColSpace(newcol);
-       inf.align_ = defaultColAlign(newcol);
-       colinfo_.insert(colinfo_.begin() + newcol, inf);
-}
-
-
-void InsetMathGrid::delCol(col_type col)
-{
-       if (ncols() == 1)
-               return;
-
-       cells_type tmpcells;
-       vector<CellInfo> tmpcellinfo;
-       for (col_type i = 0; i < nargs(); ++i)
-               if (i % ncols() != col) {
-                       tmpcells.push_back(cells_[i]);
-                       tmpcellinfo.push_back(cellinfo_[i]);
-               }
-       swap(cells_, tmpcells);
-       swap(cellinfo_, tmpcellinfo);
-
-       colinfo_.erase(colinfo_.begin() + col);
-}
-
-
-void InsetMathGrid::copyCol(col_type col)
-{
-       addCol(col+1);
-       for (row_type row = 0; row < nrows(); ++row)
-               cells_[row * ncols() + col + 1] = cells_[row * ncols() + col];
-}
-
-
-void InsetMathGrid::swapCol(col_type col)
-{
-       if (ncols() == 1)
-               return;
-       if (col + 1 == ncols())
-               --col;
-       for (row_type row = 0; row < nrows(); ++row)
-               swap(cells_[row * ncols() + col], cells_[row * ncols() + col + 
1]);
-}
-
-
-int InsetMathGrid::cellXOffset(BufferView const & bv, idx_type idx) const
-{
-       if (cellinfo_[idx].multi_ == CELL_PART_OF_MULTICOLUMN)
-               return 0;
-       col_type c = col(idx);
-       int x = colinfo_[c].offset_;
-       char align = displayColAlign(idx);
-       Dimension const & celldim = cell(idx).dimension(bv);
-       if (align == 'r' || align == 'R')
-               x += cellWidth(idx) - celldim.wid;
-       if (align == 'c' || align == 'C')
-               x += (cellWidth(idx) - celldim.wid) / 2;
-       return x;
-}
-
-
-int InsetMathGrid::cellYOffset(idx_type idx) const
-{
-       return rowinfo_[row(idx)].offset_;
-}
-
-
-int InsetMathGrid::cellWidth(idx_type idx) const
-{
-       switch (cellinfo_[idx].multi_) {
-       case CELL_NORMAL:
-               return colinfo_[col(idx)].width_;
-       case CELL_BEGIN_OF_MULTICOLUMN: {
-               col_type c1 = col(idx);
-               col_type c2 = c1 + ncellcols(idx);
-               return colinfo_[c2].offset_
-                       - colinfo_[c1].offset_
+                       1 ; //colsep() +
+                       //colinfo_[col].lines_ * vlinesep();
+       }
+
+
+       dim.wid  =  colinfo_[ncols() - 1].offset_
+                      + colinfo_[ncols() - 1].width_
+                //+ vlinesep() * colinfo_[ncols()].lines_
+                      + 2;
+
+       dim.asc  = -rowinfo_[0].offset_
+                      + rowinfo_[0].ascent_
+                //+ hlinesep() * rowinfo_[0].lines_
+                      + 1;
+
+       dim.des  =  rowinfo_[nrows() - 1].offset_
+                      + rowinfo_[nrows() - 1].descent_
+                //+ hlinesep() * rowinfo_[nrows()].lines_
+                      + 1;
+}
+
+
+void InsetMathGrid::drawT(TextPainter & /*pain*/, int /*x*/, int /*y*/) const
+{
+//     for (idx_type idx = 0; idx < nargs(); ++idx)
+//             if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
+//                     cell(idx).drawT(pain, x + cellXOffset(idx), y + 
cellYOffset(idx));
+}
+
+
+void InsetMathGrid::updateBuffer(ParIterator const & it, UpdateType utype)
+{
+       // pass down
+       for (idx_type idx = 0; idx < nargs(); ++idx)
+               if (cellinfo_[idx].multi_ != CELL_PART_OF_MULTICOLUMN)
+                       cell(idx).updateBuffer(it, utype);
+}
+
+
+docstring InsetMathGrid::eolString(row_type row, bool fragile,
+               bool /*latex*/, bool last_eoln) const
+{
+       docstring eol;
+
+       if (!rowinfo_[row].crskip_.zero())
+               eol += '[' + from_utf8(rowinfo_[row].crskip_.asLatexString()) + 
']';
+       else if(!rowinfo_[row].allow_newpage_)
+               eol += '*';
+
+       // make sure an upcoming '[' does not break anything
+       if (row + 1 < nrows()) {
+               MathData const & c = cell(index(row + 1, 0));
+               if (!c.empty() && c.front()->getChar() == '[')
+                       //eol += "[0pt]";
+                       eol += "{}";
+       }
+
+       // only add \\ if necessary
+       if (eol.empty() && row + 1 == nrows() && (nrows() == 1 || !last_eoln))
+               return docstring();
+
+       return (fragile ? "\\protect\\\\" : "\\\\") + eol;
+}
+
+
+docstring InsetMathGrid::eocString(col_type col, col_type lastcol) const
+{
+       if (col + 1 == lastcol)
+               return docstring();
+       return from_ascii(" & ");
+}
+
+
+void InsetMathGrid::addRow(row_type row)
+{
+       rowinfo_.insert(rowinfo_.begin() + row + 1, RowInfo());
+       cells_.insert
+               (cells_.begin() + (row + 1) * ncols(), ncols(), MathData());
+       cellinfo_.insert
+               (cellinfo_.begin() + (row + 1) * ncols(), ncols(), CellInfo());
+}
+
+
+void InsetMathGrid::delRow(row_type row)
+{
+       if (nrows() == 1)
+               return;
+
+       cells_type::iterator it = cells_.begin() + row * ncols();
+       cells_.erase(it, it + ncols());
+
+       vector<CellInfo>::iterator jt = cellinfo_.begin() + row * ncols();
+       cellinfo_.erase(jt, jt + ncols());
+
+       rowinfo_.erase(rowinfo_.begin() + row);
+}
+
+
+void InsetMathGrid::copyRow(row_type row)
+{
+       addRow(row);
+       for (col_type col = 0; col < ncols(); ++col)
+               cells_[(row + 1) * ncols() + col] = cells_[row * ncols() + col];
+}
+
+
+void InsetMathGrid::swapRow(row_type row)
+{
+       if (nrows() == 1)
+               return;
+       if (row + 1 == nrows())
+               --row;
+       for (col_type col = 0; col < ncols(); ++col)
+               swap(cells_[row * ncols() + col], cells_[(row + 1) * ncols() + 
col]);
+}
+
+
+void InsetMathGrid::addCol(col_type newcol)
+{
+       const col_type nc = ncols();
+       const row_type nr = nrows();
+       cells_type new_cells((nc + 1) * nr);
+       vector<CellInfo> new_cellinfo((nc + 1) * nr);
+
+       for (row_type row = 0; row < nr; ++row)
+               for (col_type col = 0; col < nc; ++col) {
+                       new_cells[row * (nc + 1) + col + (col >= newcol)]
+                               = cells_[row * nc + col];
+                       new_cellinfo[row * (nc + 1) + col + (col >= newcol)]
+                               = cellinfo_[row * nc + col];
+               }
+       swap(cells_, new_cells);
+       swap(cellinfo_, new_cellinfo);
+
+       ColInfo inf;
+       inf.skip_  = defaultColSpace(newcol);
+       inf.align_ = defaultColAlign(newcol);
+       colinfo_.insert(colinfo_.begin() + newcol, inf);
+}
+
+
+void InsetMathGrid::delCol(col_type col)
+{
+       if (ncols() == 1)
+               return;
+
+       cells_type tmpcells;
+       vector<CellInfo> tmpcellinfo;
+       for (col_type i = 0; i < nargs(); ++i)
+               if (i % ncols() != col) {
+                       tmpcells.push_back(cells_[i]);
+                       tmpcellinfo.push_back(cellinfo_[i]);
+               }
+       swap(cells_, tmpcells);
+       swap(cellinfo_, tmpcellinfo);
+
+       colinfo_.erase(colinfo_.begin() + col);
+}
+
+
+void InsetMathGrid::copyCol(col_type col)
+{
+       addCol(col+1);
+       for (row_type row = 0; row < nrows(); ++row)
+               cells_[row * ncols() + col + 1] = cells_[row * ncols() + col];
+}
+
+
+void InsetMathGrid::swapCol(col_type col)
+{
+       if (ncols() == 1)
+               return;
+       if (col + 1 == ncols())
+               --col;
+       for (row_type row = 0; row < nrows(); ++row)
+               swap(cells_[row * ncols() + col], cells_[row * ncols() + col + 
1]);
+}
+
+
+int InsetMathGrid::cellXOffset(BufferView const & bv, idx_type idx) const
+{
+       if (cellinfo_[idx].multi_ == CELL_PART_OF_MULTICOLUMN)
+               return 0;
+       col_type c = col(idx);
+       int x = colinfo_[c].offset_;
+       char align = displayColAlign(idx);
+       Dimension const & celldim = cell(idx).dimension(bv);
+       if (align == 'r' || align == 'R')
+               x += cellWidth(idx) - celldim.wid;
+       if (align == 'c' || align == 'C')
+               x += (cellWidth(idx) - celldim.wid) / 2;
+       return x;
+}
+
+
+int InsetMathGrid::cellYOffset(idx_type idx) const
+{
+       return rowinfo_[row(idx)].offset_;
+}
+
+
+int InsetMathGrid::cellWidth(idx_type idx) const
+{
+       switch (cellinfo_[idx].multi_) {
+       case CELL_NORMAL:
+               return colinfo_[col(idx)].width_;
+       case CELL_BEGIN_OF_MULTICOLUMN: {
+               col_type c1 = col(idx);
+               col_type c2 = c1 + ncellcols(idx);
+               return colinfo_[c2].offset_
+                       - colinfo_[c1].offset_
                        - colinfo_[c2].skip_
-                       - colsep()
-                       - colinfo_[c2].lines_ * vlinesep();
-       }
-       case CELL_PART_OF_MULTICOLUMN:
-               return 0;
-       }
-       return 0;
-}
-
-
-bool InsetMathGrid::idxUpDown(Cursor & cur, bool up) const
-{
-       if (up) {
-               if (cur.row() == 0)
-                       return false;
-               cur.idx() -= ncols();
-       } else {
-               if (cur.row() + 1 >= nrows())
-                       return false;
-               cur.idx() += ncols();
-       }
-       // If we are in a multicolumn cell, move to the "real" cell
-       while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
-               LASSERT(cur.idx() > 0, return false);
-               --cur.idx();
-       }
-       cur.pos() = cur.cell().x2pos(&cur.bv(), cur.x_target() - 
cur.cell().xo(cur.bv()));
-       return true;
-}
-
-
-bool InsetMathGrid::idxBackward(Cursor & cur) const
-{
-       // leave matrix if at the front edge
-       if (cur.col() == 0)
-               return false;
-       --cur.idx();
-       // If we are in a multicolumn cell, move to the "real" cell
-       while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
-               LASSERT(cur.idx() > 0, return false);
-               --cur.idx();
-       }
-       cur.pos() = cur.lastpos();
-       return true;
-}
-
-
-bool InsetMathGrid::idxForward(Cursor & cur) const
-{
-       // leave matrix if at the back edge
-       if (cur.col() + 1 == ncols())
-               return false;
-       ++cur.idx();
-       // If we are in a multicolumn cell, move to the next cell
-       while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
-               // leave matrix if at the back edge
-               if (cur.col() + 1 == ncols())
-                       return false;
-               ++cur.idx();
-       }
-       cur.pos() = 0;
-       return true;
-}
-
-
-bool InsetMathGrid::idxFirst(Cursor & cur) const
-{
-       switch (v_align_) {
-               case 't':
-                       cur.idx() = 0;
-                       break;
-               case 'b':
-                       cur.idx() = (nrows() - 1) * ncols();
-                       break;
-               default:
-                       cur.idx() = ((nrows() - 1) / 2) * ncols();
-       }
-       // If we are in a multicolumn cell, move to the "real" cell
-       while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
-               LASSERT(cur.idx() > 0, return false);
-               --cur.idx();
-       }
-       cur.pos() = 0;
-       return true;
-}
-
-
-bool InsetMathGrid::idxLast(Cursor & cur) const
-{
-       switch (v_align_) {
-               case 't':
-                       cur.idx() = ncols() - 1;
-                       break;
-               case 'b':
-                       cur.idx() = nargs() - 1;
-                       break;
-               default:
-                       cur.idx() = ((nrows() - 1) / 2 + 1) * ncols() - 1;
-       }
-       // If we are in a multicolumn cell, move to the "real" cell
-       while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
-               LASSERT(cur.idx() > 0, return false);
-               --cur.idx();
-       }
-       cur.pos() = cur.lastpos();
-       return true;
-}
-
-
-bool InsetMathGrid::idxDelete(idx_type & idx)
-{
-       // nothing to do if we have just one row
-       if (nrows() == 1)
-               return false;
-
-       // nothing to do if we are in the middle of the last row of the inset
-       if (idx + ncols() > nargs())
-               return false;
-
-       // try to delete entire sequence of ncols() empty cells if possible
-       for (idx_type i = idx; i < idx + ncols(); ++i)
-               if (!cell(i).empty())
-                       return false;
-
-       // move cells if necessary
-       for (idx_type i = index(row(idx), 0); i < idx; ++i)
-               swap(cell(i), cell(i + ncols()));
-
-       delRow(row(idx));
-
-       if (idx >= nargs())
-               idx = nargs() - 1;
-
-       // undo effect of Ctrl-Tab (i.e. pull next cell)
-       //if (idx + 1 != nargs())
-       //      cell(idx).swap(cell(idx + 1));
-
-       // we handled the event..
-       return true;
-}
-
-
-// reimplement old behaviour when pressing Delete in the last position
-// of a cell
-void InsetMathGrid::idxGlue(idx_type idx)
-{
-       col_type c = col(idx);
-       if (c + 1 == ncols()) {
-               if (row(idx) + 1 != nrows()) {
-                       for (col_type cc = 0; cc < ncols(); ++cc)
-                               cell(idx).append(cell(idx + cc + 1));
-                       delRow(row(idx) + 1);
-               }
-       } else {
-               idx_type idx_next = idx + 1;
-               while (idx_next < nargs() &&
-                      cellinfo_[idx_next].multi_ == CELL_PART_OF_MULTICOLUMN)
-                       ++idx_next;
-               if (idx_next < nargs())
-                       cell(idx).append(cell(idx_next));
-               col_type oldcol = c + 1;
-               for (col_type cc = c + 2; cc < ncols(); ++cc)
-                       cell(idx - oldcol + cc) = cell(idx - oldcol + 1 + cc);
-               cell(idx - c + ncols() - 1).clear();
-       }
-}
-
-
-InsetMathGrid::RowInfo const & InsetMathGrid::rowinfo(row_type row) const
-{
-       return rowinfo_[row];
-}
-
-
-InsetMathGrid::RowInfo & InsetMathGrid::rowinfo(row_type row)
-{
-       return rowinfo_[row];
-}
-
-
-bool InsetMathGrid::idxBetween(idx_type idx, idx_type from, idx_type to) const
-{
-       row_type const ri = row(idx);
-       row_type const r1 = min(row(from), row(to));
-       row_type const r2 = max(row(from), row(to));
-       col_type const ci = col(idx);
-       col_type const c1 = min(col(from), col(to));
-       col_type const c2 = max(col(from), col(to));
-       return r1 <= ri && ri <= r2 && c1 <= ci && ci <= c2;
-}
-
-
-void InsetMathGrid::normalize(NormalStream & os) const
-{
-       os << "[grid ";
-       for (row_type row = 0; row < nrows(); ++row) {
-               os << "[row ";
-               for (col_type col = 0; col < ncols(); ++col) {
-                       idx_type const i = index(row, col);
-                       switch (cellinfo_[i].multi_) {
-                       case CELL_NORMAL:
-                               os << "[cell " << cell(i) << ']';
-                               break;
-                       case CELL_BEGIN_OF_MULTICOLUMN:
-                               os << "[cell colspan="
-                                  << static_cast<int>(ncellcols(i)) << ' '
-                                  << cell(i) << ']';
-                               break;
-                       case CELL_PART_OF_MULTICOLUMN:
-                               break;
-                       }
-               }
-               os << ']';
-       }
-       os << ']';
-}
-
-
-void InsetMathGrid::mathmlize(MathStream & os) const
-{
-       bool const havetable = nrows() > 1 || ncols() > 1;
-       if (havetable)
-               os << MTag("mtable");
-       char const * const celltag = havetable ? "mtd" : "mrow";
-       for (row_type row = 0; row < nrows(); ++row) {
-               if (havetable)
-                       os << MTag("mtr");
-               for (col_type col = 0; col < ncols(); ++col) {
-                       idx_type const i = index(row, col);
-                       if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
-                               col_type const cellcols = ncellcols(i);
-                               ostringstream attr;
-                               if (havetable && cellcols > 1)
-                                       attr << "colspan='" << cellcols << '\'';
-                               os << MTag(celltag, attr.str());
-                               os << cell(index(row, col));
-                               os << ETag(celltag);
-                       }
-               }
-               if (havetable)
-                       os << ETag("mtr");
-       }
-       if (havetable)
-               os << ETag("mtable");
-}
-
-
-// FIXME XHTML
-// We need to do something about alignment here.
-void InsetMathGrid::htmlize(HtmlStream & os, string attrib) const
-{
-       bool const havetable = nrows() > 1 || ncols() > 1;
-       if (!havetable) {
-               os << cell(index(0, 0));
-               return;
-       }
-       os << MTag("table", attrib);
-       for (row_type row = 0; row < nrows(); ++row) {
-               os << MTag("tr");
-               for (col_type col = 0; col < ncols(); ++col) {
-                       idx_type const i = index(row, col);
-                       if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
-                               col_type const cellcols = ncellcols(i);
-                               ostringstream attr;
-                               if (cellcols > 1)
-                                       attr << "colspan='" << cellcols << '\'';
-                               os << MTag("td", attr.str());
-                               os << cell(index(row, col));
-                               os << ETag("td");
-                       }
-               }
-               os << ETag("tr");
-       }
-       os << ETag("table");
-}
-
-
-void InsetMathGrid::htmlize(HtmlStream & os) const
-{
-       htmlize(os, "class='mathtable'");
-}
-
-
-void InsetMathGrid::write(WriteStream & os) const
-{
-       write(os, 0, 0, nrows(), ncols());
-}
-
-void InsetMathGrid::write(WriteStream & os,
-                         row_type beg_row, col_type beg_col,
-                         row_type end_row, col_type end_col) const
-{
-       MathEnsurer ensurer(os, false);
-       docstring eol;
-       for (row_type row = beg_row; row < end_row; ++row) {
-               os << verboseHLine(rowinfo_[row].lines_);
-               // don't write & and empty cells at end of line,
-               // unless there are vertical lines
-               col_type lastcol = 0;
-               bool emptyline = true;
-               bool last_eoln = true;
-               for (col_type col = beg_col; col < end_col; ++col) {
-                       idx_type const idx = index(row, col);
-                       bool const empty_cell = cell(idx).empty();
-                       if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL)
-                               last_eoln = false;
-                       if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL 
||
-                           colinfo_[col + 1].lines_) {
-                               lastcol = col + 1;
-                               emptyline = false;
-                       }
-               }
-               for (col_type col = beg_col; col < end_col;) {
-                       int nccols = 1;
-                       idx_type const idx = index(row, col);
-                       TexRow::RowEntry entry = 
os.texrow().mathEntry(id(),idx);
-                       os.texrow().startMath(id(),idx);
-                       if (col >= lastcol) {
-                               ++col;
-                               continue;
-                       }
-                       os.pushRowEntry(entry);
-                       if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) 
{
-                               size_t s = col + 1;
-                               while (s < ncols() &&
-                                      cellinfo_[index(row, s)].multi_ == 
CELL_PART_OF_MULTICOLUMN)
-                                       s++;
-                               nccols = s - col;
-                               os << "\\multicolumn{" << nccols
-                                  << "}{" << cellinfo_[idx].align_
-                                  << "}{";
-                       }
-                       os << cell(idx);
-                       if (os.pendingBrace())
-                               ModeSpecifier specifier(os, TEXT_MODE);
-                       if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
-                               os << '}';
-                       os << eocString(col + nccols - 1, lastcol);
-                       col += nccols;
-                       os.popRowEntry();
-               }
-               eol = eolString(row, os.fragile(), os.latex(), last_eoln);
-               os << eol;
-               // append newline only if line wasn't completely empty
-               // and the formula is not written on a single line
-               bool const empty = emptyline && eol.empty();
-               if (!empty && nrows() > 1)
-                       os << "\n";
-       }
-       // @TODO use end_row instead of nrows() ?
-       docstring const s = verboseHLine(rowinfo_[nrows()].lines_);
-       if (!s.empty()) {
-               if (eol.empty()) {
-                       if (os.fragile())
-                               os << "\\protect";
-                       os << "\\\\";
-               }
-               os << s;
-       }
-}
-
-
-int InsetMathGrid::colsep() const
-{
-       return 6;
-}
-
-
-int InsetMathGrid::rowsep() const
-{
-       return 6;
-}
-
-
-int InsetMathGrid::hlinesep() const
-{
-       return 3;
-}
-
-
-int InsetMathGrid::vlinesep() const
-{
-       return 3;
-}
-
-
-int InsetMathGrid::border() const
-{
-       return 1;
-}
-
-
-void InsetMathGrid::splitCell(Cursor & cur)
-{
-       if (cur.idx() == cur.lastidx())
-               return;
-       MathData ar = cur.cell();
-       ar.erase(0, cur.pos());
-       cur.cell().erase(cur.pos(), cur.lastpos());
-       ++cur.idx();
-       while (cur.idx() << nargs() &&
-              cellinfo_[cur.idx()].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
-               ++cur.idx();
-       cur.pos() = 0;
-       cur.cell().insert(0, ar);
-}
-
-
-char InsetMathGrid::displayColAlign(idx_type idx) const
-{
-       if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) {
-               // align_ may also contain lines like "||r|", so this is
-               // not complete, but we catch at least the simple cases.
-               if (cellinfo_[idx].align_ == "c")
-                       return 'c';
-               if (cellinfo_[idx].align_ == "l")
-                       return 'l';
-               if (cellinfo_[idx].align_ == "r")
-                       return 'r';
-       }
-       return colinfo_[col(idx)].align_;
-}
-
-
-void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
-{
-       //lyxerr << "*** InsetMathGrid: request: " << cmd << endl;
-
-       Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
-
-       FuncCode const act = cmd.action();
-       switch (act) {
-
-       // insert file functions
-       case LFUN_LINE_DELETE_FORWARD:
-               cur.recordUndoInset();
-               //autocorrect_ = false;
-               //macroModeClose();
-               //if (selection_) {
-               //      selDel();
-               //      break;
-               //}
-               if (nrows() > 1)
-                       delRow(cur.row());
-               if (cur.idx() > cur.lastidx())
-                       cur.idx() = cur.lastidx();
-               if (cur.pos() > cur.lastpos())
-                       cur.pos() = cur.lastpos();
-               break;
-
-       case LFUN_CELL_SPLIT:
-               cur.recordUndo();
-               splitCell(cur);
-               break;
-
-       case LFUN_CELL_BACKWARD:
-               // See below.
-               cur.setSelection(false);
-               if (!idxPrev(cur)) {
-                       cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
-                       cur.undispatched();
-               }
-               break;
-
-       case LFUN_CELL_FORWARD:
-               // Can't handle selection by additional 'shift' as this is
-               // hard bound to LFUN_CELL_BACKWARD
-               cur.setSelection(false);
-               if (!idxNext(cur)) {
-                       cmd = FuncRequest(LFUN_FINISHED_FORWARD);
-                       cur.undispatched();
-               }
-               break;
-
-       case LFUN_NEWLINE_INSERT: {
-               cur.recordUndoInset();
-               row_type const r = cur.row();
-               addRow(r);
-
-               // split line
-               for (col_type c = col(cur.idx()) + 1; c < ncols(); ++c)
-                       swap(cell(index(r, c)), cell(index(r + 1, c)));
-
-               // split cell
-               splitCell(cur);
-               if (ncols() > 1)
-                       swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
-               if (cur.idx() > 0)
-                       --cur.idx();
-               cur.pos() = cur.lastpos();
-               cur.forceBufferUpdate();
-               //mathcursor->normalize();
-               //cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
-               break;
-       }
-
-       case LFUN_INSET_MODIFY: {
-               cur.recordUndoInset();
-               //lyxerr << "handling tabular-feature " << 
to_utf8(cmd.argument()) << endl;
-               istringstream is(to_utf8(cmd.argument()));
-               string s;
-               is >> s;
-               if (s != "tabular") {
-                       InsetMathNest::doDispatch(cur, cmd);
-                       return;
-               }
-               is >> s;
-               if (s == "valign-top")
-                       setVerticalAlignment('t');
-               else if (s == "valign-middle")
-                       setVerticalAlignment('c');
-               else if (s == "valign-bottom")
-                       setVerticalAlignment('b');
-               else if (s == "align-left")
-                       setHorizontalAlignment('l', cur.col());
-               else if (s == "align-right")
-                       setHorizontalAlignment('r', cur.col());
-               else if (s == "align-center")
-                       setHorizontalAlignment('c', cur.col());
-               else if (s == "append-row")
-                       for (int i = 0, n = extractInt(is); i < n; ++i)
-                               addRow(cur.row());
-               else if (s == "delete-row") {
-                       cur.clearSelection(); // bug 4323
-                       for (int i = 0, n = extractInt(is); i < n; ++i) {
-                               delRow(cur.row());
-                               if (cur.idx() >= nargs())
-                                       cur.idx() -= ncols();
-                       }
-                       cur.pos() = 0; // trick, see below
-               }
-               else if (s == "copy-row") {
-                       // Here (as later) we save the cursor col/row
-                       // in order to restore it after operation.
-                       row_type const r = cur.row();
-                       col_type const c = cur.col();
-                       for (int i = 0, n = extractInt(is); i < n; ++i)
-                               copyRow(cur.row());
-                       cur.idx() = index(r, c);
-               }
-               else if (s == "swap-row") {
-                       swapRow(cur.row());
-                       // Trick to suppress same-idx-means-different-cell
-                       // assertion crash:
-                       cur.pos() = 0;
-               }
-               else if (s == "add-hline-above")
-                       rowinfo_[cur.row()].lines_++;
-               else if (s == "add-hline-below")
-                       rowinfo_[cur.row()+1].lines_++;
-               else if (s == "delete-hline-above")
-                       rowinfo_[cur.row()].lines_--;
-               else if (s == "delete-hline-below")
-                       rowinfo_[cur.row()+1].lines_--;
-               else if (s == "append-column") {
-                       row_type const r = cur.row();
-                       col_type const c = cur.col();
-                       for (int i = 0, n = extractInt(is); i < n; ++i)
-                               addCol(cur.col() + 1);
-                       cur.idx() = index(r, c);
-               }
-               else if (s == "delete-column") {
-                       cur.clearSelection(); // bug 4323
-                       row_type const r = cur.row();
-                       col_type const c = cur.col();
-                       for (int i = 0, n = extractInt(is); i < n; ++i)
-                               delCol(col(cur.idx()));
-                       cur.idx() = index(r, min(c, cur.ncols() - 1));
-                       cur.pos() = 0; // trick, see above
-               }
-               else if (s == "copy-column") {
-                       row_type const r = cur.row();
-                       col_type const c = cur.col();
-                       copyCol(cur.col());
-                       cur.idx() = index(r, c);
-               }
-               else if (s == "swap-column") {
-                       swapCol(cur.col());
-                       cur.pos() = 0; // trick, see above
-               }
-               else if (s == "add-vline-left") {
-                       colinfo_[cur.col()].lines_++;
-                       if (!colinfo_[cur.col()].special_.empty())
-                               colinfo_[cur.col()].special_ += '|';
-               }
-               else if (s == "add-vline-right") {
-                       colinfo_[cur.col()+1].lines_++;
-                       if (!colinfo_[cur.col()+1].special_.empty())
-                               colinfo_[cur.col()+1].special_.insert(0, 1, 
'|');
-               }
-               else if (s == "delete-vline-left") {
-                       colinfo_[cur.col()].lines_--;
-                       docstring & special = colinfo_[cur.col()].special_;
-                       if (!special.empty()) {
-                               docstring::size_type i = special.rfind('|');
-                               LASSERT(i != docstring::npos, break);
-                               special.erase(i, 1);
-                       }
-               }
-               else if (s == "delete-vline-right") {
-                       colinfo_[cur.col()+1].lines_--;
-                       docstring & special = colinfo_[cur.col()+1].special_;
-                       if (!special.empty()) {
-                               docstring::size_type i = special.find('|');
-                               LASSERT(i != docstring::npos, break);
-                               special.erase(i, 1);
-                       }
-               }
-               else {
-                       cur.undispatched();
-                       break;
-               }
-               // perhaps this should be FINISHED_BACKWARD -- just for clarity?
-               //lyxerr << "returning FINISHED_LEFT" << endl;
-               break;
-       }
-
-       case LFUN_CLIPBOARD_PASTE:
-               parseflg |= Parse::VERBATIM;
-               // fall through
-       case LFUN_PASTE: {
-               if (cur.currentMode() <= TEXT_MODE)
-                       parseflg |= Parse::TEXTMODE;
-               cur.message(_("Paste"));
-               cap::replaceSelection(cur);
-               docstring topaste;
-               if (cmd.argument().empty() && !theClipboard().isInternal())
-                       topaste = 
theClipboard().getAsText(Clipboard::PlainTextType);
-               else {
-                       idocstringstream is(cmd.argument());
-                       int n = 0;
-                       is >> n;
-                       topaste = cap::selection(n, 
buffer().params().documentClassPtr());
-               }
-               InsetMathGrid grid(buffer_, 1, 1);
-               if (!topaste.empty())
-                       if ((topaste.size() == 1 && isAscii(topaste))
-                           || !mathed_parse_normal(grid, topaste, parseflg)) {
-                               resetGrid(grid);
-                               mathed_parse_normal(grid, topaste, parseflg | 
Parse::VERBATIM);
-                       }
-
-               bool hline_enabled = false;
-               FuncRequest fr = FuncRequest(LFUN_INSET_MODIFY, "tabular 
add-hline-above");
-               FuncStatus status;
-               if (getStatus(cur, fr, status))
-                       hline_enabled = status.enabled();
-               if (grid.nargs() == 1) {
-                       // single cell/part of cell
-                       cur.recordUndoInset();
-                       cur.cell().insert(cur.pos(), grid.cell(0));
-                       cur.pos() += grid.cell(0).size();
-                       if (hline_enabled)
-                               rowinfo_[cur.row()].lines_ += 
grid.rowinfo_[0].lines_;
-                       else {
-                               for (unsigned int l = 0; l < 
grid.rowinfo_[0].lines_; ++l) {
-                                        cur.cell().insert(0,
-                                               MathAtom(new 
InsetMathUnknown(from_ascii("\\hline"))));
-                                        cur.pos()++;
-                               }
-                       }
-               } else {
-                       // multiple cells
-                       cur.recordUndoInset();
-                       col_type const numcols =
-                               min(grid.ncols(), ncols() - col(cur.idx()));
-                       row_type const numrows =
-                               min(grid.nrows(), nrows() - cur.row());
-                       for (row_type r = 0; r < numrows; ++r) {
-                               for (col_type c = 0; c < numcols; ++c) {
-                                       idx_type i = index(r + cur.row(), c + 
col(cur.idx()));
-                                       cell(i).insert(0, 
grid.cell(grid.index(r, c)));
-                               }
-                               if (hline_enabled)
-                                       rowinfo_[r].lines_ += 
grid.rowinfo_[r].lines_;
-                               else {
-                                       for (unsigned int l = 0; l < 
grid.rowinfo_[r].lines_; ++l) {
-                                               idx_type i = index(r + 
cur.row(), 0);
-                                               cell(i).insert(0,
-                                                       MathAtom(new 
InsetMathUnknown(from_ascii("\\hline"))));
-                                       }
-                               }
-                               // append the left over horizontal cells to the 
last column
-                               idx_type i = index(r + cur.row(), ncols() - 1);
-                               for (InsetMath::col_type c = numcols; c < 
grid.ncols(); ++c)
-                                       cell(i).append(grid.cell(grid.index(r, 
c)));
-                       }
-                       // append the left over vertical cells to the last 
_cell_
-                       idx_type i = nargs() - 1;
-                       for (row_type r = numrows; r < grid.nrows(); ++r) {
-                               for (col_type c = 0; c < grid.ncols(); ++c)
-                                       cell(i).append(grid.cell(grid.index(r, 
c)));
-                               if (hline_enabled)
-                                       rowinfo_[r].lines_ += 
grid.rowinfo_[r].lines_;
-                               else {
-                                       for (unsigned int l = 0; l < 
grid.rowinfo_[r].lines_; ++l) {
-                                               cell(i).insert(0,
-                                                       MathAtom(new 
InsetMathUnknown(from_ascii("\\hline"))));
-                                       }
-                               }
-                       }
-               }
-               cur.clearSelection(); // bug 393
-               // FIXME audit setBuffer calls
-               cur.inset().setBuffer(*buffer_);
-               cur.forceBufferUpdate();
-               cur.finishUndo();
-               break;
-       }
-
-       case LFUN_LINE_BEGIN:
-       case LFUN_WORD_BACKWARD:
-       case LFUN_WORD_LEFT:
-               cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
-               // fall through
-       case LFUN_LINE_BEGIN_SELECT:
-       case LFUN_WORD_BACKWARD_SELECT:
-       case LFUN_WORD_LEFT_SELECT:
-               cur.selHandle(act == LFUN_WORD_BACKWARD_SELECT ||
-                               act == LFUN_WORD_LEFT_SELECT ||
-                               act == LFUN_LINE_BEGIN_SELECT);
-               cur.macroModeClose();
-               if (cur.pos() != 0) {
-                       cur.pos() = 0;
-               } else if (cur.idx() % cur.ncols() != 0) {
-                       cur.idx() -= cur.idx() % cur.ncols();
-                       cur.pos() = 0;
-               } else if (cur.idx() != 0) {
-                       cur.idx() = 0;
-                       cur.pos() = 0;
-               } else {
-                       cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
-                       cur.undispatched();
-               }
-               break;
-
-       case LFUN_WORD_FORWARD:
-       case LFUN_WORD_RIGHT:
-       case LFUN_LINE_END:
-               cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
-               // fall through
-       case LFUN_WORD_FORWARD_SELECT:
-       case LFUN_WORD_RIGHT_SELECT:
-       case LFUN_LINE_END_SELECT:
-               cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
-                               act == LFUN_WORD_RIGHT_SELECT ||
-                               act == LFUN_LINE_END_SELECT);
-               cur.macroModeClose();
-               cur.clearTargetX();
-               if (cur.pos() != cur.lastpos()) {
-                       cur.pos() = cur.lastpos();
-               } else if ((cur.idx() + 1) % cur.ncols() != 0) {
-                       cur.idx() += cur.ncols() - 1 - cur.idx() % cur.ncols();
-                       cur.pos() = cur.lastpos();
-               } else if (cur.idx() != cur.lastidx()) {
-                       cur.idx() = cur.lastidx();
-                       cur.pos() = cur.lastpos();
-               } else {
-                       cmd = FuncRequest(LFUN_FINISHED_FORWARD);
-                       cur.undispatched();
-               }
-               break;
-
-       default:
-               InsetMathNest::doDispatch(cur, cmd);
-       }
-}
-
-
-bool InsetMathGrid::getStatus(Cursor & cur, FuncRequest const & cmd,
-               FuncStatus & status) const
-{
-       switch (cmd.action()) {
-       case LFUN_INSET_MODIFY: {
-               istringstream is(to_utf8(cmd.argument()));
-               string s;
-               is >> s;
-               if (s != "tabular") {
-                       // We only now about table actions here.
-                       break;
-               }
-               if (&cur.inset() != this) {
-                       // Table actions requires that the cursor is _inside_ 
the
-                       // table.
-                       status.setEnabled(false);
-                       status.message(from_utf8(N_("Cursor not in table")));
-                       return true;
-               }
-               is >> s;
-               if (nrows() <= 1 && (s == "delete-row" || s == "swap-row")) {
-                       status.setEnabled(false);
-                       status.message(from_utf8(N_("Only one row")));
-                       return true;
-               }
-               if (ncols() <= 1 &&
-                   (s == "delete-column" || s == "swap-column")) {
-                       status.setEnabled(false);
-                       status.message(from_utf8(N_("Only one column")));
-                       return true;
-               }
-               if ((rowinfo_[cur.row()].lines_ == 0 &&
-                    s == "delete-hline-above") ||
-                   (rowinfo_[cur.row() + 1].lines_ == 0 &&
-                    s == "delete-hline-below")) {
-                       status.setEnabled(false);
-                       status.message(from_utf8(N_("No hline to delete")));
-                       return true;
-               }
-
-               if ((colinfo_[cur.col()].lines_ == 0 &&
-                    s == "delete-vline-left") ||
-                   (colinfo_[cur.col() + 1].lines_ == 0 &&
-                    s == "delete-vline-right")) {
-                       status.setEnabled(false);
-                       status.message(from_utf8(N_("No vline to delete")));
-                       return true;
-               }
-               if (s == "valign-top" || s == "valign-middle" ||
-                   s == "valign-bottom" || s == "align-left" ||
-                   s == "align-right" || s == "align-center") {
-                       status.setEnabled(true);
-                       char const ha = horizontalAlignment(cur.col());
-                       char const va = verticalAlignment();
-                       status.setOnOff((s == "align-left" && ha == 'l')
-                                       || (s == "align-right"   && ha == 'r')
-                                       || (s == "align-center"  && ha == 'c')
-                                       || (s == "valign-top"    && va == 't')
-                                       || (s == "valign-bottom" && va == 'b')
-                                       || (s == "valign-middle" && va == 'c'));
-                       return true;
-               }
-               if (s == "append-row" || s == "delete-row" ||
-                   s == "copy-row" || s == "swap-row" ||
-                   s == "add-hline-above" || s == "add-hline-below" ||
-                   s == "delete-hline-above" || s == "delete-hline-below" ||
-                   s == "append-column" || s == "delete-column" ||
-                   s == "copy-column" || s == "swap-column" ||
-                   s == "add-vline-left" || s == "add-vline-right" ||
-                   s == "delete-vline-left" || s == "delete-vline-right") {
-                       status.setEnabled(true);
-               } else {
-                       status.setEnabled(false);
-                       status.message(bformat(
-                               from_utf8(N_("Unknown tabular feature 
'%1$s'")), lyx::from_ascii(s)));
-               }
-
-#if 0
-               // FIXME: What did this code do?
-               // Please check whether it is still needed!
-               // should be more precise
-               if (v_align_ == '\0') {
-                       status.enable(true);
-                       break;
-               }
-               if (cmd.argument().empty()) {
-                       status.enable(false);
-                       break;
-               }
-               if (!contains("tcb", cmd.argument()[0])) {
-                       status.enable(false);
-                       break;
-               }
-               status.setOnOff(cmd.argument()[0] == v_align_);
-               status.setEnabled(true);
-#endif
-               return true;
-       }
-
-       case LFUN_CELL_SPLIT:
-               status.setEnabled(cur.idx() != cur.lastidx());
-               return true;
-
-       case LFUN_CELL_BACKWARD:
-       case LFUN_CELL_FORWARD:
-               status.setEnabled(true);
-               return true;
-
-       default:
-               break;
-       }
-       return InsetMathNest::getStatus(cur, cmd, status);
-}
-
-
+                       - colsep()
+                       - colinfo_[c2].lines_ * vlinesep();
+       }
+       case CELL_PART_OF_MULTICOLUMN:
+               return 0;
+       }
+       return 0;
+}
+
+
+bool InsetMathGrid::idxUpDown(Cursor & cur, bool up) const
+{
+       if (up) {
+               if (cur.row() == 0)
+                       return false;
+               cur.idx() -= ncols();
+       } else {
+               if (cur.row() + 1 >= nrows())
+                       return false;
+               cur.idx() += ncols();
+       }
+       // If we are in a multicolumn cell, move to the "real" cell
+       while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
+               LASSERT(cur.idx() > 0, return false);
+               --cur.idx();
+       }
+       cur.pos() = cur.cell().x2pos(&cur.bv(), cur.x_target() - 
cur.cell().xo(cur.bv()));
+       return true;
+}
+
+
+bool InsetMathGrid::idxBackward(Cursor & cur) const
+{
+       // leave matrix if at the front edge
+       if (cur.col() == 0)
+               return false;
+       --cur.idx();
+       // If we are in a multicolumn cell, move to the "real" cell
+       while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
+               LASSERT(cur.idx() > 0, return false);
+               --cur.idx();
+       }
+       cur.pos() = cur.lastpos();
+       return true;
+}
+
+
+bool InsetMathGrid::idxForward(Cursor & cur) const
+{
+       // leave matrix if at the back edge
+       if (cur.col() + 1 == ncols())
+               return false;
+       ++cur.idx();
+       // If we are in a multicolumn cell, move to the next cell
+       while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
+               // leave matrix if at the back edge
+               if (cur.col() + 1 == ncols())
+                       return false;
+               ++cur.idx();
+       }
+       cur.pos() = 0;
+       return true;
+}
+
+
+bool InsetMathGrid::idxFirst(Cursor & cur) const
+{
+       switch (v_align_) {
+               case 't':
+                       cur.idx() = 0;
+                       break;
+               case 'b':
+                       cur.idx() = (nrows() - 1) * ncols();
+                       break;
+               default:
+                       cur.idx() = ((nrows() - 1) / 2) * ncols();
+       }
+       // If we are in a multicolumn cell, move to the "real" cell
+       while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
+               LASSERT(cur.idx() > 0, return false);
+               --cur.idx();
+       }
+       cur.pos() = 0;
+       return true;
+}
+
+
+bool InsetMathGrid::idxLast(Cursor & cur) const
+{
+       switch (v_align_) {
+               case 't':
+                       cur.idx() = ncols() - 1;
+                       break;
+               case 'b':
+                       cur.idx() = nargs() - 1;
+                       break;
+               default:
+                       cur.idx() = ((nrows() - 1) / 2 + 1) * ncols() - 1;
+       }
+       // If we are in a multicolumn cell, move to the "real" cell
+       while (cellinfo_[cur.idx()].multi_ == CELL_PART_OF_MULTICOLUMN) {
+               LASSERT(cur.idx() > 0, return false);
+               --cur.idx();
+       }
+       cur.pos() = cur.lastpos();
+       return true;
+}
+
+
+bool InsetMathGrid::idxDelete(idx_type & idx)
+{
+       // nothing to do if we have just one row
+       if (nrows() == 1)
+               return false;
+
+       // nothing to do if we are in the middle of the last row of the inset
+       if (idx + ncols() > nargs())
+               return false;
+
+       // try to delete entire sequence of ncols() empty cells if possible
+       for (idx_type i = idx; i < idx + ncols(); ++i)
+               if (!cell(i).empty())
+                       return false;
+
+       // move cells if necessary
+       for (idx_type i = index(row(idx), 0); i < idx; ++i)
+               swap(cell(i), cell(i + ncols()));
+
+       delRow(row(idx));
+
+       if (idx >= nargs())
+               idx = nargs() - 1;
+
+       // undo effect of Ctrl-Tab (i.e. pull next cell)
+       //if (idx + 1 != nargs())
+       //      cell(idx).swap(cell(idx + 1));
+
+       // we handled the event..
+       return true;
+}
+
+
+// reimplement old behaviour when pressing Delete in the last position
+// of a cell
+void InsetMathGrid::idxGlue(idx_type idx)
+{
+       col_type c = col(idx);
+       if (c + 1 == ncols()) {
+               if (row(idx) + 1 != nrows()) {
+                       for (col_type cc = 0; cc < ncols(); ++cc)
+                               cell(idx).append(cell(idx + cc + 1));
+                       delRow(row(idx) + 1);
+               }
+       } else {
+               idx_type idx_next = idx + 1;
+               while (idx_next < nargs() &&
+                      cellinfo_[idx_next].multi_ == CELL_PART_OF_MULTICOLUMN)
+                       ++idx_next;
+               if (idx_next < nargs())
+                       cell(idx).append(cell(idx_next));
+               col_type oldcol = c + 1;
+               for (col_type cc = c + 2; cc < ncols(); ++cc)
+                       cell(idx - oldcol + cc) = cell(idx - oldcol + 1 + cc);
+               cell(idx - c + ncols() - 1).clear();
+       }
+}
+
+
+InsetMathGrid::RowInfo const & InsetMathGrid::rowinfo(row_type row) const
+{
+       return rowinfo_[row];
+}
+
+
+InsetMathGrid::RowInfo & InsetMathGrid::rowinfo(row_type row)
+{
+       return rowinfo_[row];
+}
+
+
+bool InsetMathGrid::idxBetween(idx_type idx, idx_type from, idx_type to) const
+{
+       row_type const ri = row(idx);
+       row_type const r1 = min(row(from), row(to));
+       row_type const r2 = max(row(from), row(to));
+       col_type const ci = col(idx);
+       col_type const c1 = min(col(from), col(to));
+       col_type const c2 = max(col(from), col(to));
+       return r1 <= ri && ri <= r2 && c1 <= ci && ci <= c2;
+}
+
+
+void InsetMathGrid::normalize(NormalStream & os) const
+{
+       os << "[grid ";
+       for (row_type row = 0; row < nrows(); ++row) {
+               os << "[row ";
+               for (col_type col = 0; col < ncols(); ++col) {
+                       idx_type const i = index(row, col);
+                       switch (cellinfo_[i].multi_) {
+                       case CELL_NORMAL:
+                               os << "[cell " << cell(i) << ']';
+                               break;
+                       case CELL_BEGIN_OF_MULTICOLUMN:
+                               os << "[cell colspan="
+                                  << static_cast<int>(ncellcols(i)) << ' '
+                                  << cell(i) << ']';
+                               break;
+                       case CELL_PART_OF_MULTICOLUMN:
+                               break;
+                       }
+               }
+               os << ']';
+       }
+       os << ']';
+}
+
+
+void InsetMathGrid::mathmlize(MathStream & os) const
+{
+       bool const havetable = nrows() > 1 || ncols() > 1;
+       if (havetable)
+               os << MTag("mtable");
+       char const * const celltag = havetable ? "mtd" : "mrow";
+       for (row_type row = 0; row < nrows(); ++row) {
+               if (havetable)
+                       os << MTag("mtr");
+               for (col_type col = 0; col < ncols(); ++col) {
+                       idx_type const i = index(row, col);
+                       if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
+                               col_type const cellcols = ncellcols(i);
+                               ostringstream attr;
+                               if (havetable && cellcols > 1)
+                                       attr << "colspan='" << cellcols << '\'';
+                               os << MTag(celltag, attr.str());
+                               os << cell(index(row, col));
+                               os << ETag(celltag);
+                       }
+               }
+               if (havetable)
+                       os << ETag("mtr");
+       }
+       if (havetable)
+               os << ETag("mtable");
+}
+
+
+// FIXME XHTML
+// We need to do something about alignment here.
+void InsetMathGrid::htmlize(HtmlStream & os, string attrib) const
+{
+       bool const havetable = nrows() > 1 || ncols() > 1;
+       if (!havetable) {
+               os << cell(index(0, 0));
+               return;
+       }
+       os << MTag("table", attrib);
+       for (row_type row = 0; row < nrows(); ++row) {
+               os << MTag("tr");
+               for (col_type col = 0; col < ncols(); ++col) {
+                       idx_type const i = index(row, col);
+                       if (cellinfo_[i].multi_ != CELL_PART_OF_MULTICOLUMN) {
+                               col_type const cellcols = ncellcols(i);
+                               ostringstream attr;
+                               if (cellcols > 1)
+                                       attr << "colspan='" << cellcols << '\'';
+                               os << MTag("td", attr.str());
+                               os << cell(index(row, col));
+                               os << ETag("td");
+                       }
+               }
+               os << ETag("tr");
+       }
+       os << ETag("table");
+}
+
+
+void InsetMathGrid::htmlize(HtmlStream & os) const
+{
+       htmlize(os, "class='mathtable'");
+}
+
+
+void InsetMathGrid::write(WriteStream & os) const
+{
+       write(os, 0, 0, nrows(), ncols());
+}
+
+void InsetMathGrid::write(WriteStream & os,
+                         row_type beg_row, col_type beg_col,
+                         row_type end_row, col_type end_col) const
+{
+       MathEnsurer ensurer(os, false);
+       docstring eol;
+       for (row_type row = beg_row; row < end_row; ++row) {
+               os << verboseHLine(rowinfo_[row].lines_);
+               // don't write & and empty cells at end of line,
+               // unless there are vertical lines
+               col_type lastcol = 0;
+               bool emptyline = true;
+               bool last_eoln = true;
+               for (col_type col = beg_col; col < end_col; ++col) {
+                       idx_type const idx = index(row, col);
+                       bool const empty_cell = cell(idx).empty();
+                       if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL)
+                               last_eoln = false;
+                       if (!empty_cell || cellinfo_[idx].multi_ != CELL_NORMAL 
||
+                           colinfo_[col + 1].lines_) {
+                               lastcol = col + 1;
+                               emptyline = false;
+                       }
+               }
+               for (col_type col = beg_col; col < end_col;) {
+                       int nccols = 1;
+                       idx_type const idx = index(row, col);
+                       TexRow::RowEntry entry = 
os.texrow().mathEntry(id(),idx);
+                       os.texrow().startMath(id(),idx);
+                       if (col >= lastcol) {
+                               ++col;
+                               continue;
+                       }
+                       os.pushRowEntry(entry);
+                       if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) 
{
+                               size_t s = col + 1;
+                               while (s < ncols() &&
+                                      cellinfo_[index(row, s)].multi_ == 
CELL_PART_OF_MULTICOLUMN)
+                                       s++;
+                               nccols = s - col;
+                               os << "\\multicolumn{" << nccols
+                                  << "}{" << cellinfo_[idx].align_
+                                  << "}{";
+                       }
+                       os << cell(idx);
+                       if (os.pendingBrace())
+                               ModeSpecifier specifier(os, TEXT_MODE);
+                       if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
+                               os << '}';
+                       os << eocString(col + nccols - 1, lastcol);
+                       col += nccols;
+                       os.popRowEntry();
+               }
+               eol = eolString(row, os.fragile(), os.latex(), last_eoln);
+               os << eol;
+               // append newline only if line wasn't completely empty
+               // and the formula is not written on a single line
+               bool const empty = emptyline && eol.empty();
+               if (!empty && nrows() > 1)
+                       os << "\n";
+       }
+       // @TODO use end_row instead of nrows() ?
+       docstring const s = verboseHLine(rowinfo_[nrows()].lines_);
+       if (!s.empty()) {
+               if (eol.empty()) {
+                       if (os.fragile())
+                               os << "\\protect";
+                       os << "\\\\";
+               }
+               os << s;
+       }
+}
+
+
+int InsetMathGrid::colsep() const
+{
+       return 6;
+}
+
+
+int InsetMathGrid::rowsep() const
+{
+       return 6;
+}
+
+
+int InsetMathGrid::hlinesep() const
+{
+       return 3;
+}
+
+
+int InsetMathGrid::vlinesep() const
+{
+       return 3;
+}
+
+
+int InsetMathGrid::border() const
+{
+       return 1;
+}
+
+
+void InsetMathGrid::splitCell(Cursor & cur)
+{
+       if (cur.idx() == cur.lastidx())
+               return;
+       MathData ar = cur.cell();
+       ar.erase(0, cur.pos());
+       cur.cell().erase(cur.pos(), cur.lastpos());
+       ++cur.idx();
+       while (cur.idx() << nargs() &&
+              cellinfo_[cur.idx()].multi_ == CELL_BEGIN_OF_MULTICOLUMN)
+               ++cur.idx();
+       cur.pos() = 0;
+       cur.cell().insert(0, ar);
+}
+
+
+char InsetMathGrid::displayColAlign(idx_type idx) const
+{
+       if (cellinfo_[idx].multi_ == CELL_BEGIN_OF_MULTICOLUMN) {
+               // align_ may also contain lines like "||r|", so this is
+               // not complete, but we catch at least the simple cases.
+               if (cellinfo_[idx].align_ == "c")
+                       return 'c';
+               if (cellinfo_[idx].align_ == "l")
+                       return 'l';
+               if (cellinfo_[idx].align_ == "r")
+                       return 'r';
+       }
+       return colinfo_[col(idx)].align_;
+}
+
+
+void InsetMathGrid::doDispatch(Cursor & cur, FuncRequest & cmd)
+{
+       //lyxerr << "*** InsetMathGrid: request: " << cmd << endl;
+
+       Parse::flags parseflg = Parse::QUIET | Parse::USETEXT;
+
+       FuncCode const act = cmd.action();
+       switch (act) {
+
+       // insert file functions
+       case LFUN_LINE_DELETE_FORWARD:
+               cur.recordUndoInset();
+               //autocorrect_ = false;
+               //macroModeClose();
+               //if (selection_) {
+               //      selDel();
+               //      break;
+               //}
+               if (nrows() > 1)
+                       delRow(cur.row());
+               if (cur.idx() > cur.lastidx())
+                       cur.idx() = cur.lastidx();
+               if (cur.pos() > cur.lastpos())
+                       cur.pos() = cur.lastpos();
+               break;
+
+       case LFUN_CELL_SPLIT:
+               cur.recordUndo();
+               splitCell(cur);
+               break;
+
+       case LFUN_CELL_BACKWARD:
+               // See below.
+               cur.setSelection(false);
+               if (!idxPrev(cur)) {
+                       cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
+                       cur.undispatched();
+               }
+               break;
+
+       case LFUN_CELL_FORWARD:
+               // Can't handle selection by additional 'shift' as this is
+               // hard bound to LFUN_CELL_BACKWARD
+               cur.setSelection(false);
+               if (!idxNext(cur)) {
+                       cmd = FuncRequest(LFUN_FINISHED_FORWARD);
+                       cur.undispatched();
+               }
+               break;
+
+       case LFUN_NEWLINE_INSERT: {
+               cur.recordUndoInset();
+               row_type const r = cur.row();
+               addRow(r);
+
+               // split line
+               for (col_type c = col(cur.idx()) + 1; c < ncols(); ++c)
+                       swap(cell(index(r, c)), cell(index(r + 1, c)));
+
+               // split cell
+               splitCell(cur);
+               if (ncols() > 1)
+                       swap(cell(cur.idx()), cell(cur.idx() + ncols() - 1));
+               if (cur.idx() > 0)
+                       --cur.idx();
+               cur.pos() = cur.lastpos();
+               cur.forceBufferUpdate();
+               //mathcursor->normalize();
+               //cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
+               break;
+       }
+
+       case LFUN_INSET_MODIFY: {
+               cur.recordUndoInset();
+               //lyxerr << "handling tabular-feature " << 
to_utf8(cmd.argument()) << endl;
+               istringstream is(to_utf8(cmd.argument()));
+               string s;
+               is >> s;
+               if (s != "tabular") {
+                       InsetMathNest::doDispatch(cur, cmd);
+                       return;
+               }
+               is >> s;
+               if (s == "valign-top")
+                       setVerticalAlignment('t');
+               else if (s == "valign-middle")
+                       setVerticalAlignment('c');
+               else if (s == "valign-bottom")
+                       setVerticalAlignment('b');
+               else if (s == "align-left")
+                       setHorizontalAlignment('l', cur.col());
+               else if (s == "align-right")
+                       setHorizontalAlignment('r', cur.col());
+               else if (s == "align-center")
+                       setHorizontalAlignment('c', cur.col());
+               else if (s == "append-row")
+                       for (int i = 0, n = extractInt(is); i < n; ++i)
+                               addRow(cur.row());
+               else if (s == "delete-row") {
+                       cur.clearSelection(); // bug 4323
+                       for (int i = 0, n = extractInt(is); i < n; ++i) {
+                               delRow(cur.row());
+                               if (cur.idx() >= nargs())
+                                       cur.idx() -= ncols();
+                       }
+                       cur.pos() = 0; // trick, see below
+               }
+               else if (s == "copy-row") {
+                       // Here (as later) we save the cursor col/row
+                       // in order to restore it after operation.
+                       row_type const r = cur.row();
+                       col_type const c = cur.col();
+                       for (int i = 0, n = extractInt(is); i < n; ++i)
+                               copyRow(cur.row());
+                       cur.idx() = index(r, c);
+               }
+               else if (s == "swap-row") {
+                       swapRow(cur.row());
+                       // Trick to suppress same-idx-means-different-cell
+                       // assertion crash:
+                       cur.pos() = 0;
+               }
+               else if (s == "add-hline-above")
+                       rowinfo_[cur.row()].lines_++;
+               else if (s == "add-hline-below")
+                       rowinfo_[cur.row()+1].lines_++;
+               else if (s == "delete-hline-above")
+                       rowinfo_[cur.row()].lines_--;
+               else if (s == "delete-hline-below")
+                       rowinfo_[cur.row()+1].lines_--;
+               else if (s == "append-column") {
+                       row_type const r = cur.row();
+                       col_type const c = cur.col();
+                       for (int i = 0, n = extractInt(is); i < n; ++i)
+                               addCol(cur.col() + 1);
+                       cur.idx() = index(r, c);
+               }
+               else if (s == "delete-column") {
+                       cur.clearSelection(); // bug 4323
+                       row_type const r = cur.row();
+                       col_type const c = cur.col();
+                       for (int i = 0, n = extractInt(is); i < n; ++i)
+                               delCol(col(cur.idx()));
+                       cur.idx() = index(r, min(c, cur.ncols() - 1));
+                       cur.pos() = 0; // trick, see above
+               }
+               else if (s == "copy-column") {
+                       row_type const r = cur.row();
+                       col_type const c = cur.col();
+                       copyCol(cur.col());
+                       cur.idx() = index(r, c);
+               }
+               else if (s == "swap-column") {
+                       swapCol(cur.col());
+                       cur.pos() = 0; // trick, see above
+               }
+               else if (s == "add-vline-left") {
+                       colinfo_[cur.col()].lines_++;
+                       if (!colinfo_[cur.col()].special_.empty())
+                               colinfo_[cur.col()].special_ += '|';
+               }
+               else if (s == "add-vline-right") {
+                       colinfo_[cur.col()+1].lines_++;
+                       if (!colinfo_[cur.col()+1].special_.empty())
+                               colinfo_[cur.col()+1].special_.insert(0, 1, 
'|');
+               }
+               else if (s == "delete-vline-left") {
+                       colinfo_[cur.col()].lines_--;
+                       docstring & special = colinfo_[cur.col()].special_;
+                       if (!special.empty()) {
+                               docstring::size_type i = special.rfind('|');
+                               LASSERT(i != docstring::npos, break);
+                               special.erase(i, 1);
+                       }
+               }
+               else if (s == "delete-vline-right") {
+                       colinfo_[cur.col()+1].lines_--;
+                       docstring & special = colinfo_[cur.col()+1].special_;
+                       if (!special.empty()) {
+                               docstring::size_type i = special.find('|');
+                               LASSERT(i != docstring::npos, break);
+                               special.erase(i, 1);
+                       }
+               }
+               else {
+                       cur.undispatched();
+                       break;
+               }
+               // perhaps this should be FINISHED_BACKWARD -- just for clarity?
+               //lyxerr << "returning FINISHED_LEFT" << endl;
+               break;
+       }
+
+       case LFUN_CLIPBOARD_PASTE:
+               parseflg |= Parse::VERBATIM;
+               // fall through
+       case LFUN_PASTE: {
+               if (cur.currentMode() <= TEXT_MODE)
+                       parseflg |= Parse::TEXTMODE;
+               cur.message(_("Paste"));
+               cap::replaceSelection(cur);
+               docstring topaste;
+               if (cmd.argument().empty() && !theClipboard().isInternal())
+                       topaste = 
theClipboard().getAsText(Clipboard::PlainTextType);
+               else {
+                       idocstringstream is(cmd.argument());
+                       int n = 0;
+                       is >> n;
+                       topaste = cap::selection(n, 
buffer().params().documentClassPtr());
+               }
+               InsetMathGrid grid(buffer_, 1, 1);
+               if (!topaste.empty())
+                       if ((topaste.size() == 1 && isAscii(topaste))
+                           || !mathed_parse_normal(grid, topaste, parseflg)) {
+                               resetGrid(grid);
+                               mathed_parse_normal(grid, topaste, parseflg | 
Parse::VERBATIM);
+                       }
+
+               bool hline_enabled = false;
+               FuncRequest fr = FuncRequest(LFUN_INSET_MODIFY, "tabular 
add-hline-above");
+               FuncStatus status;
+               if (getStatus(cur, fr, status))
+                       hline_enabled = status.enabled();
+               if (grid.nargs() == 1) {
+                       // single cell/part of cell
+                       cur.recordUndoInset();
+                       cur.cell().insert(cur.pos(), grid.cell(0));
+                       cur.pos() += grid.cell(0).size();
+                       if (hline_enabled)
+                               rowinfo_[cur.row()].lines_ += 
grid.rowinfo_[0].lines_;
+                       else {
+                               for (unsigned int l = 0; l < 
grid.rowinfo_[0].lines_; ++l) {
+                                        cur.cell().insert(0,
+                                               MathAtom(new 
InsetMathUnknown(from_ascii("\\hline"))));
+                                        cur.pos()++;
+                               }
+                       }
+               } else {
+                       // multiple cells
+                       cur.recordUndoInset();
+                       col_type const numcols =
+                               min(grid.ncols(), ncols() - col(cur.idx()));
+                       row_type const numrows =
+                               min(grid.nrows(), nrows() - cur.row());
+                       for (row_type r = 0; r < numrows; ++r) {
+                               for (col_type c = 0; c < numcols; ++c) {
+                                       idx_type i = index(r + cur.row(), c + 
col(cur.idx()));
+                                       cell(i).insert(0, 
grid.cell(grid.index(r, c)));
+                               }
+                               if (hline_enabled)
+                                       rowinfo_[r].lines_ += 
grid.rowinfo_[r].lines_;
+                               else {
+                                       for (unsigned int l = 0; l < 
grid.rowinfo_[r].lines_; ++l) {
+                                               idx_type i = index(r + 
cur.row(), 0);
+                                               cell(i).insert(0,
+                                                       MathAtom(new 
InsetMathUnknown(from_ascii("\\hline"))));
+                                       }
+                               }
+                               // append the left over horizontal cells to the 
last column
+                               idx_type i = index(r + cur.row(), ncols() - 1);
+                               for (InsetMath::col_type c = numcols; c < 
grid.ncols(); ++c)
+                                       cell(i).append(grid.cell(grid.index(r, 
c)));
+                       }
+                       // append the left over vertical cells to the last 
_cell_
+                       idx_type i = nargs() - 1;
+                       for (row_type r = numrows; r < grid.nrows(); ++r) {
+                               for (col_type c = 0; c < grid.ncols(); ++c)
+                                       cell(i).append(grid.cell(grid.index(r, 
c)));
+                               if (hline_enabled)
+                                       rowinfo_[r].lines_ += 
grid.rowinfo_[r].lines_;
+                               else {
+                                       for (unsigned int l = 0; l < 
grid.rowinfo_[r].lines_; ++l) {
+                                               cell(i).insert(0,
+                                                       MathAtom(new 
InsetMathUnknown(from_ascii("\\hline"))));
+                                       }
+                               }
+                       }
+               }
+               cur.clearSelection(); // bug 393
+               // FIXME audit setBuffer calls
+               cur.inset().setBuffer(*buffer_);
+               cur.forceBufferUpdate();
+               cur.finishUndo();
+               break;
+       }
+
+       case LFUN_LINE_BEGIN:
+       case LFUN_WORD_BACKWARD:
+       case LFUN_WORD_LEFT:
+               cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
+               // fall through
+       case LFUN_LINE_BEGIN_SELECT:
+       case LFUN_WORD_BACKWARD_SELECT:
+       case LFUN_WORD_LEFT_SELECT:
+               cur.selHandle(act == LFUN_WORD_BACKWARD_SELECT ||
+                               act == LFUN_WORD_LEFT_SELECT ||
+                               act == LFUN_LINE_BEGIN_SELECT);
+               cur.macroModeClose();
+               if (cur.pos() != 0) {
+                       cur.pos() = 0;
+               } else if (cur.idx() % cur.ncols() != 0) {
+                       cur.idx() -= cur.idx() % cur.ncols();
+                       cur.pos() = 0;
+               } else if (cur.idx() != 0) {
+                       cur.idx() = 0;
+                       cur.pos() = 0;
+               } else {
+                       cmd = FuncRequest(LFUN_FINISHED_BACKWARD);
+                       cur.undispatched();
+               }
+               break;
+
+       case LFUN_WORD_FORWARD:
+       case LFUN_WORD_RIGHT:
+       case LFUN_LINE_END:
+               cur.screenUpdateFlags(Update::Decoration | Update::FitCursor);
+               // fall through
+       case LFUN_WORD_FORWARD_SELECT:
+       case LFUN_WORD_RIGHT_SELECT:
+       case LFUN_LINE_END_SELECT:
+               cur.selHandle(act == LFUN_WORD_FORWARD_SELECT ||
+                               act == LFUN_WORD_RIGHT_SELECT ||
+                               act == LFUN_LINE_END_SELECT);
+               cur.macroModeClose();
+               cur.clearTargetX();
+               if (cur.pos() != cur.lastpos()) {
+                       cur.pos() = cur.lastpos();
+               } else if ((cur.idx() + 1) % cur.ncols() != 0) {
+                       cur.idx() += cur.ncols() - 1 - cur.idx() % cur.ncols();
+                       cur.pos() = cur.lastpos();
+               } else if (cur.idx() != cur.lastidx()) {
+                       cur.idx() = cur.lastidx();
+                       cur.pos() = cur.lastpos();
+               } else {
+                       cmd = FuncRequest(LFUN_FINISHED_FORWARD);
+                       cur.undispatched();
+               }
+               break;
+
+       default:
+               InsetMathNest::doDispatch(cur, cmd);
+       }
+}
+
+
+bool InsetMathGrid::getStatus(Cursor & cur, FuncRequest const & cmd,
+               FuncStatus & status) const
+{
+       switch (cmd.action()) {
+       case LFUN_INSET_MODIFY: {
+               istringstream is(to_utf8(cmd.argument()));
+               string s;
+               is >> s;
+               if (s != "tabular") {
+                       // We only now about table actions here.
+                       break;
+               }
+               if (&cur.inset() != this) {
+                       // Table actions requires that the cursor is _inside_ 
the
+                       // table.
+                       status.setEnabled(false);
+                       status.message(from_utf8(N_("Cursor not in table")));
+                       return true;
+               }
+               is >> s;
+               if (nrows() <= 1 && (s == "delete-row" || s == "swap-row")) {
+                       status.setEnabled(false);
+                       status.message(from_utf8(N_("Only one row")));
+                       return true;
+               }
+               if (ncols() <= 1 &&
+                   (s == "delete-column" || s == "swap-column")) {
+                       status.setEnabled(false);
+                       status.message(from_utf8(N_("Only one column")));
+                       return true;
+               }
+               if ((rowinfo_[cur.row()].lines_ == 0 &&
+                    s == "delete-hline-above") ||
+                   (rowinfo_[cur.row() + 1].lines_ == 0 &&
+                    s == "delete-hline-below")) {
+                       status.setEnabled(false);
+                       status.message(from_utf8(N_("No hline to delete")));
+                       return true;
+               }
+
+               if ((colinfo_[cur.col()].lines_ == 0 &&
+                    s == "delete-vline-left") ||
+                   (colinfo_[cur.col() + 1].lines_ == 0 &&
+                    s == "delete-vline-right")) {
+                       status.setEnabled(false);
+                       status.message(from_utf8(N_("No vline to delete")));
+                       return true;
+               }
+               if (s == "valign-top" || s == "valign-middle" ||
+                   s == "valign-bottom" || s == "align-left" ||
+                   s == "align-right" || s == "align-center") {
+                       status.setEnabled(true);
+                       char const ha = horizontalAlignment(cur.col());
+                       char const va = verticalAlignment();
+                       status.setOnOff((s == "align-left" && ha == 'l')
+                                       || (s == "align-right"   && ha == 'r')
+                                       || (s == "align-center"  && ha == 'c')
+                                       || (s == "valign-top"    && va == 't')
+                                       || (s == "valign-bottom" && va == 'b')
+                                       || (s == "valign-middle" && va == 'c'));
+                       return true;
+               }
+               if (s == "append-row" || s == "delete-row" ||
+                   s == "copy-row" || s == "swap-row" ||
+                   s == "add-hline-above" || s == "add-hline-below" ||
+                   s == "delete-hline-above" || s == "delete-hline-below" ||
+                   s == "append-column" || s == "delete-column" ||
+                   s == "copy-column" || s == "swap-column" ||
+                   s == "add-vline-left" || s == "add-vline-right" ||
+                   s == "delete-vline-left" || s == "delete-vline-right") {
+                       status.setEnabled(true);
+               } else {
+                       status.setEnabled(false);
+                       status.message(bformat(
+                               from_utf8(N_("Unknown tabular feature 
'%1$s'")), lyx::from_ascii(s)));
+               }
+
+#if 0
+               // FIXME: What did this code do?
+               // Please check whether it is still needed!
+               // should be more precise
+               if (v_align_ == '\0') {
+                       status.enable(true);
+                       break;
+               }
+               if (cmd.argument().empty()) {
+                       status.enable(false);
+                       break;
+               }
+               if (!contains("tcb", cmd.argument()[0])) {
+                       status.enable(false);
+                       break;
+               }
+               status.setOnOff(cmd.argument()[0] == v_align_);
+               status.setEnabled(true);
+#endif
+               return true;
+       }
+
+       case LFUN_CELL_SPLIT:
+               status.setEnabled(cur.idx() != cur.lastidx());
+               return true;
+
+       case LFUN_CELL_BACKWARD:
+       case LFUN_CELL_FORWARD:
+               status.setEnabled(true);
+               return true;
+
+       default:
+               break;
+       }
+       return InsetMathNest::getStatus(cur, cmd, status);
+}
+
+
 // static
 char InsetMathGrid::colAlign(HullType type, col_type col)
 {
@@ -1863,4 +1863,4 @@ char InsetMathGrid::colAlign(HullType type, col_type col)
 
 
 
-} // namespace lyx
+} // namespace lyx
diff --git a/src/mathed/InsetMathSplit.cpp b/src/mathed/InsetMathSplit.cpp
index e69de29..f85e664 100644
--- a/src/mathed/InsetMathSplit.cpp
+++ b/src/mathed/InsetMathSplit.cpp
@@ -0,0 +1,195 @@
+/**
+ * \file InsetMathSplit.cpp
+ * This file is part of LyX, the document processor.
+ * Licence details can be found in the file COPYING.
+ *
+ * \author André Pönitz
+ *
+ * Full author contact details are available in file CREDITS.
+ */
+
+#include <config.h>
+
+#include "InsetMathSplit.h"
+
+#include "MathData.h"
+#include "MathStream.h"
+#include "MathStream.h"
+
+#include "FuncRequest.h"
+#include "FuncStatus.h"
+#include "support/gettext.h"
+#include "LaTeXFeatures.h"
+
+#include "support/lstrings.h"
+
+#include <ostream>
+
+using namespace std;
+
+namespace lyx {
+
+using support::bformat;
+
+
+// FIXME: handle numbers in gui, currently they are only read and written
+
+InsetMathSplit::InsetMathSplit(Buffer * buf, docstring const & name,
+       char valign, bool numbered)
+       : InsetMathGrid(buf, 1, 1, valign, docstring()), name_(name),
+         numbered_(numbered)
+{
+}
+
+
+Inset * InsetMathSplit::clone() const
+{
+       return new InsetMathSplit(*this);
+}
+
+
+//FIXME: This has probably no effect and can be removed.
+char InsetMathSplit::defaultColAlign(col_type col)
+{
+       if (name_ == "gathered")
+               return 'c';
+       if (name_ == "lgathered")
+               return 'l';
+       if (name_ == "rgathered")
+               return 'r';
+       if (name_ == "split"
+           || name_ == "aligned"
+           || name_ == "align"
+           || name_ == "alignedat")
+               return colAlign(hullAlign, col);
+       return 'l';
+}
+
+
+char InsetMathSplit::displayColAlign(idx_type idx) const
+{
+       if (name_ == "gathered")
+               return 'c';
+       if (name_ == "lgathered")
+               return 'l';
+       if (name_ == "rgathered")
+               return 'r';
+       if (name_ == "split"
+           || name_ == "aligned"
+           || name_ == "align"
+           || name_ == "alignedat")
+               return colAlign(hullAlign, col(idx));
+       return InsetMathGrid::displayColAlign(idx);
+}
+
+
+void InsetMathSplit::draw(PainterInfo & pi, int x, int y) const
+{
+       InsetMathGrid::draw(pi, x, y);
+       setPosCache(pi, x, y);
+}
+
+
+bool InsetMathSplit::getStatus(Cursor & cur, FuncRequest const & cmd,
+               FuncStatus & flag) const
+{
+       switch (cmd.action()) {
+       case LFUN_INSET_MODIFY: {
+               istringstream is(to_utf8(cmd.argument()));
+               string s;
+               is >> s;
+               if (s != "tabular")
+                       break;
+               is >> s;
+               if (s == "add-vline-left" || s == "add-vline-right") {
+                       flag.message(bformat(
+                               from_utf8(N_("Can't add vertical grid lines in 
'%1$s'")),       name_));
+                       flag.setEnabled(false);
+                       return true;
+               }
+               if (s == "align-left" || s == "align-center" || s == 
"align-right") {
+                       flag.setEnabled(false);
+                       return true;
+               }
+               break;
+       }
+       default:
+               break;
+       }
+       return InsetMathGrid::getStatus(cur, cmd, flag);
+}
+
+
+void InsetMathSplit::write(WriteStream & ws) const
+{
+       MathEnsurer ensurer(ws);
+       if (ws.fragile())
+               ws << "\\protect";
+       docstring suffix;
+       if (!numbered_ && name_ == "align")
+               suffix = from_ascii("*");
+       ws << "\\begin{" << name_ << suffix << '}';
+       bool open = ws.startOuterRow();
+       if (name_ != "split" && name_ != "align" && verticalAlignment() != 'c')
+               ws << '[' << verticalAlignment() << ']';
+       if (name_ == "alignedat")
+               ws << '{' << static_cast<unsigned int>((ncols() + 1)/2) << '}';
+       InsetMathGrid::write(ws);
+       if (ws.fragile())
+               ws << "\\protect";
+       ws << "\\end{" << name_ << suffix << "}\n";
+       if (open)
+               ws.startOuterRow();
+}
+
+
+void InsetMathSplit::infoize(odocstream & os) const
+{
+       docstring name = name_;
+       name[0] = support::uppercase(name[0]);
+       if (name_ == "align" && !numbered_)
+               os << name << "* ";
+       else
+               os << name << ' ';
+}
+
+
+void InsetMathSplit::mathmlize(MathStream & ms) const
+{
+       // split, gathered, aligned, alignedat
+       // At the moment, those seem to display just fine without any
+       // special treatment.
+       // FIXME
+       // lgathered and rgathered could use the proper alignment, but
+       // it's not clear how to do that without copying a lot of code.
+       // One idea would be to wrap the table in an <mrow>, and set the
+       // alignment there via CSS.
+       // FIXME how to handle numbered and unnumbered align?
+       InsetMathGrid::mathmlize(ms);
+}
+
+
+void InsetMathSplit::htmlize(HtmlStream & ms) const
+{
+       // split, gathered, aligned, alignedat
+       // At the moment, those seem to display just fine without any
+       // special treatment.
+       // FIXME
+       // lgathered and rgathered could use the proper alignment.
+       // FIXME how to handle numbered and unnumbered align?
+       InsetMathGrid::htmlize(ms);
+}
+
+
+void InsetMathSplit::validate(LaTeXFeatures & features) const
+{
+       if (name_ == "split" || name_ == "gathered" || name_ == "aligned" ||
+           name_ == "alignedat" || name_ == "align")
+               features.require("amsmath");
+       else if (name_ == "lgathered" || name_ == "rgathered")
+               features.require("mathtools");
+       InsetMathGrid::validate(features);
+}
+
+
+} // namespace lyx

Reply via email to