Package accentbx: some problems with accents in T E X and how to solve them
Alexander S. Berdnikov · 2000
Weak points of TEX internal command \accent are investigated. It appears that some features of \accent prevent to construct specific letters which require several accents simultaneously. Special macro which emulates the work of \accent, additional macro for fine tuning of accents, if-then-else structures which enable to put correct accents depending on uppercase/lowercase state and font family conditions, etc., are described. Closely related to it are the accents for I/i and J/j which are different for uppercase and lowercase letters, and similar problem occurs for so-called title letters. The whole package is coded in such a way that in works for Plain, AMSTEX, etc., as well, not only for L ATEX2.