Mention that MergeAnalysis is a bitmask
diff --git a/merge.go b/merge.go
index bab53e0..272bf6a 100644
--- a/merge.go
+++ b/merge.go
@@ -178,6 +178,9 @@
MergePreferenceFastForwardOnly MergePreference = C.GIT_MERGE_PREFERENCE_FASTFORWARD_ONLY
)
+// MergeAnalysis returns the possible actions which could be taken by
+// a 'git-merge' command. There may be multiple answers, so the first
+// return value is a bitmask of MergeAnalysis values.
func (r *Repository) MergeAnalysis(theirHeads []*AnnotatedCommit) (MergeAnalysis, MergePreference, error) {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
