in­pu­tenc – Ac­cept dif­fer­ent in­put en­cod­ings

The pack­age trans­lates var­i­ous stan­dard and other in­put en­cod­ings into a ‘LaTeX in­ter­nal lan­guage’. The in­ter­nal lan­guage is ex­pressed en­tirely in TeX's base en­cod­ing (stan­dard ASCII print­able char­ac­ters, car­riage con­trol to­kens and TeX con­trol se­quences, the lat­ter mostly de­fined by LaTeX).
The pack­age is part of the LaTeX dis­tri­bu­tion.