ltxkeys – A robust key parser for LaTeX

The pack­age pro­vides fa­cil­i­ties for cre­at­ing and man­ag­ing keys in the sense of the key­val and xkey­val pack­ages, but it is in­tended to be more ro­bust and faster. Its ro­bust­ness comes from its abil­ity to pre­serve braces in key val­ues through­out pars­ing. The need to pre­serve braces in key val­ues arises of­ten in pars­ing keys (for ex­am­ple, in the xwa­ter­mark pack­age). The pack­age is faster than xkey­val pack­age be­cause (among other things) it avoids char­ac­ter-wise pars­ing of key val­ues (called “se­lec­tive san­i­ti­za­tion” by the xkey­val pack­age).
The pack­age also pro­vides func­tions for defin­ing and man­ag­ing keys.