for _, d := range f.Use {
		if d.Path == path {
			d.Syntax.markRemoved()
			*d = Use{}
		}
	}
	return nil
}

func (f *WorkFile) AddReplace(oldPath, oldVers, newPath, newVers string) error {
	return addReplace(f.Syntax, &f.Replace, oldPath, oldVers, newPath, newVers)
}

func (f *WorkFile) DropReplace(oldPath, oldVers string) error {
	for _, r := range f.Replace {