Merge pull request #25 from dtaniwaki/handle-empty-branch

Handle empty branches

Author: dtaniwaki

pkg/ghost/types/branchspec.go

@@ -134,10 +134,6 @@ func (bs CommitsBranchSpec) CreateBranch(we WorkingEnv) (GhostBranch, errors.Git
 
 	commitHashFrom := resolved.CommittishFrom
 	commitHashTo := resolved.CommittishTo
-	if commitHashFrom == commitHashTo {
-		return nil, nil
-	}
-
 	branch := CommitsBranch{
 		Prefix:         resolved.Prefix,
 		CommitHashFrom: commitHashFrom,
@@ -257,15 +253,6 @@ func (bs DiffBranchSpec) CreateBranch(we WorkingEnv) (GhostBranch, errors.GitGho
 		}
 	}
 
-	size, err := util.FileSize(tmpFile.Name())
-	if err != nil {
-		return nil, errors.WithStack(err)
-	}
-
-	if size == 0 {
-		return nil, nil
-	}
-
 	hash, err := util.GenerateFileContentHash(tmpFile.Name())
 	if err != nil {
 		return nil, errors.WithStack(err)