-m option accepts dressed brakets and commas

src/Engine/LanczosDriver1.h

@@ -53,6 +53,7 @@ void mainLoop3(const ModelType& model,
 	typedef typename GeometryType::ComplexOrRealType ComplexOrRealType;
 	typedef LanczosPlusPlus::Engine<ModelType,InternalProductTemplate,SpecialSymmetryType> EngineType;
 	typedef typename EngineType::TridiagonalMatrixType TridiagonalMatrixType;
+	typedef PsimagLite::Vector<PsimagLite::String>::Type VectorStringType;
 
 	const GeometryType& geometry = model.geometry();
 	EngineType engine(model,geometry.numberOfSites(),io);
@@ -64,8 +65,19 @@ void mainLoop3(const ModelType& model,
 	PsimagLite::String filename = PsimagLite::basenameOf(io.filename());
 
 	const SizeType nmeas = lanczosOptions.measure.size();
-	for (SizeType i = 0; i < nmeas; ++i)
-		engine.measure(lanczosOptions.measure[i]);
+	for (SizeType i = 0; i < nmeas; ++i) {
+		VectorStringType tokens;
+		PsimagLite::split(tokens, lanczosOptions.measure[i], ",");
+		const SizeType ntokens = tokens.size();
+		for (SizeType j = 0; j < ntokens; ++j) {
+			VectorStringType braOpKet;
+			PsimagLite::split(braOpKet, tokens[j], "|");
+			const SizeType ind = (braOpKet.size() == 3) ? 1 : 0;
+			if (braOpKet.size() != 1 && ind == 0)
+				err("Wrong braket\n");
+			engine.measure(braOpKet[ind]);
+		}
+	}
 
 	for (SizeType gfi=0;gfi<lanczosOptions.gf.size();gfi++) {
 		SizeType counter = 0;

src/Engine/RahulOperator.h

@@ -33,14 +33,16 @@ public:
 			return true;
 			break;
 		case Label::N:
-			result = (bitSaved) ? 0 : 1;
-			return true;
+			return (bitSaved);
+			break;
 		case Label::SZ:
 			result = (bitSaved) ? -zeroPointFive : zeroPointFive;
 			return true;
+			break;
 		case Label::C:
 			bit = !bit;
 			return ((bitSaved && !transpose_) || (!bitSaved && transpose_));
+			break;
 		default:
 			throw PsimagLite::RuntimeError("RahulOperator::actOn internal error\n");
 			break;

src/Models/HubbardOneOrbital/HubbardHelper.h

@@ -229,7 +229,7 @@ private:
 				               basis.getN(ket1,ket2,i,SPIN_DOWN,orb));
 
 				for (SizeType j=0;j<nsite;j++) {
-					ComplexOrRealType value = coulombCoupling(i,j);
+					ComplexOrRealType value = 0.5*coulombCoupling(i,j);
 					if (PsimagLite::real(value) == 0 && PsimagLite::imag(value) == 0) continue;
 					RealType tmp2 = basis.getN(ket1,ket2,j,SPIN_UP,orb) +
 					        basis.getN(ket1,ket2,j,SPIN_DOWN,orb);