LGTM
https://codereview.appspot.com/554030043/diff/582040043/input/regression/cross-staff-stem-offset.ly File input/regression/cross-staff-stem-offset.ly (right): https://codereview.appspot.com/554030043/diff/582040043/input/regression/cross-staff-stem-offset.ly#newcode5 input/regression/cross-staff-stem-offset.ly:5: Cross-staff stems should not have their @code{'X-offset} calculated too We normally don't use the "'" symbol in documentation. https://codereview.appspot.com/554030043/diff/582040043/input/regression/cross-staff-stem-offset.ly#newcode6 input/regression/cross-staff-stem-offset.ly:6: early because @code{'direction} may not be known. The last stem in this Please use two spaces after a full stop. https://codereview.appspot.com/554030043/