23. Every person imprisoned under the provisions of sub-section (2) of section 15, sub-section (2) of section 18, section 20, section 21 or section 22 shall at the end of his term of imprisonment be brought under police custody before the nearest Special Magistrate who shall forthwith deal with such person in the manner laid down in sections 7, 8 and 9 as if such person had been brought before such Special Magistrate under the provisions of section 6: Provided that if the said Special Magistrate is of the opinion that such person would, if detained under this Act as a vagrant in a vagrants' home, be eligible to be discharged therefrom under the provisions of sub-section (1) of section 18, he may, instead of dealing with such person as aforesaid, direct that such person be released and such person shall thereupon be set at liberty.