The attached patch fixes the deletion of an empty last row for \smallmatrix (this is part of bug #7484). It is a trivial patch, but to comply with the rules I need a nod from another developer for committing it to trunk.
-- Enrico
Index: src/mathed/MathParser.cpp =================================================================== --- src/mathed/MathParser.cpp (revisione 38470) +++ src/mathed/MathParser.cpp (copia locale) @@ -252,7 +252,7 @@ bool innerHull(docstring const & name) return name == "array" || name == "cases" || name == "aligned" || name == "alignedat" || name == "gathered" || name == "split" || name == "subarray" || name == "tabular" || name == "matrix" - || name.substr(1) == "matrix"; + || name == "smallmatrix" || name.substr(1) == "matrix"; }