#8 new flag UpMajor.

internal/modules/modproxy.go

@@ -250,7 +250,8 @@ type UpdateOptions struct {
 	Modules  []module.Version
 	Pre      bool
 	Cached   bool
-	Major    bool
+	Major    bool // Major true compare only major
+	UpMajor  bool // UpMajor module up with major
 }
 
 // Updates finds updates for a set of specified modules.
@@ -276,13 +277,13 @@ func Updates(opt UpdateOptions) {
 					ch <- Update{Module: m, Err: err}
 					return nil
 				}
-				prefix, ok := ModMajor(mod.Path)
+				major := semver.Major(m.Version)
 				var v string
-				switch ok {
+				switch opt.UpMajor {
 				case true:
-					v = mod.MaxVersion(prefix, opt.Pre)
-				default:
 					v = mod.MaxVersion("", opt.Pre)
+				case false:
+					v = mod.MaxVersion(major, opt.Pre)
 				}
 				if IsNewerVersion(m.Version, v, opt.Major) {
 					ch <- Update{Module: m, Version: v}