* Detect conflicts with 3way merge Unforunately git apply --3way reports conflicts differently than standard patches resulting in conflicts being missed. Adjust the conflict detection code to account for this different error reporting. Fix #18514 Signed-off-by: Andrew Thornton <[email protected]> * and three-way failed Signed-off-by: Andrew Thornton <[email protected]> Co-authored-by: Lunny Xiao <[email protected]>