X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;f=src%2Fmathed%2FMathParser.cpp;h=ffb828361cd24d48e404ec9594dba35c14e45f72;hb=02e82157ec583c3900e359de86be79fac6512387;hp=4b0e5386c602caa4eaf7e44b699dbda44d82044a;hpb=4065f596ada672c58787a0f9faa2278621545ab9;p=lyx.git

diff --git a/src/mathed/MathParser.cpp b/src/mathed/MathParser.cpp
index 4b0e5386c6..ffb828361c 100644
--- a/src/mathed/MathParser.cpp
+++ b/src/mathed/MathParser.cpp
@@ -930,7 +930,8 @@ bool Parser::parse1(InsetMathGrid & grid, unsigned flags,
 
 		else if (t.cat() == catParameter) {
 			Token const & n	= getToken();
-			cell->push_back(MathAtom(new MathMacroArgument(n.character()-'0')));
+			if (n.character())
+				cell->push_back(MathAtom(new MathMacroArgument(n.character()-'0')));
 		}
 
 		else if (t.cat() == catActive)
@@ -1362,36 +1363,41 @@ bool Parser::parse1(InsetMathGrid & grid, unsigned flags,
 			}
 		}
 
-		else if (t.cs() == "multicolumn") {
-			// extract column count and insert dummy cells
+		else if (t.cs() == "multicolumn" && grid.handlesMulticolumn()) {
+			// if the columns are specified numerically,
+			// extract column count and insert dummy cells,
+			// otherwise parse it as an user macro
 			MathData count;
 			parse(count, FLAG_ITEM, mode);
-			int cols = 1;
-			if (!extractNumber(count, cols)) {
-				success_ = false;
-				error("can't extract number of multicolumn cells");
-			}
-			// resize the table if necessary
-			size_t first = grid.index(cellrow, cellcol);
-			for (int i = 1; i < cols; ++i) {
-				if (addCol(grid, cellcol)) {
-					size_t const idx = grid.index(cellrow, cellcol);
-					grid.cellinfo(idx).multi_ =
-						InsetMathGrid::CELL_PART_OF_MULTICOLUMN;
+			int cols;
+			if (extractNumber(count, cols)) {
+				// resize the table if necessary
+				size_t first = grid.index(cellrow, cellcol);
+				for (int i = 1; i < cols; ++i) {
+					if (addCol(grid, cellcol)) {
+						size_t const idx = grid.index(cellrow, cellcol);
+						grid.cellinfo(idx).multi_ =
+							InsetMathGrid::CELL_PART_OF_MULTICOLUMN;
+					}
 				}
-			}
 
-			// the first cell is the real thing, not a dummy
-			cell = &grid.cell(first);
-			grid.cellinfo(first).multi_ = InsetMathGrid::CELL_BEGIN_OF_MULTICOLUMN;
+				// the first cell is the real thing, not a dummy
+				cell = &grid.cell(first);
+				grid.cellinfo(first).multi_ =
+					InsetMathGrid::CELL_BEGIN_OF_MULTICOLUMN;
 
-			// read special alignment
-			MathData align;
-			parse(align, FLAG_ITEM, mode);
-			grid.cellinfo(first).align_ = asString(align);
+				// read special alignment
+				MathData align;
+				parse(align, FLAG_ITEM, mode);
+				grid.cellinfo(first).align_ = asString(align);
 
-			// parse the remaining contents into the "real" cell
-			parse(*cell, FLAG_ITEM, mode);
+				// parse the remaining contents into the "real" cell
+				parse(*cell, FLAG_ITEM, mode);
+			} else {
+				MathAtom at = MathAtom(new MathMacro(buf, t.cs()));
+				cell->push_back(at);
+				cell->push_back(MathAtom(new InsetMathBrace(count)));
+			}
 		}
 
 		else if (t.cs() == "limits" || t.cs() == "nolimits") {