A tenant in common or cotenant may purchase real property owned in common at a sale of real property for the enforcement of a lien other than a tax lien, and, unless it be otherwise provided in the judgment or order of sale in the action, the title so acquired by him shall be free and clear of any interests or equities arising from such tenancy in favor of his cotenants or his tenants in common who were properly before the court. In all cases when a tenant in common or cotenant has heretofore purchased real property at a sale of real property for the enforcement of a lien other than a tax lien in an action or proceeding in which all or some of the tenants in common or cotenants were properly before the court, unless it affirmatively appears otherwise in some decree or order duly entered in such action or proceeding, the title of such purchaser is hereby declared to be free of all of the interests and equities of all such tenants in common or cotenants who were properly before the court in such action or proceeding.