Crate texlang_texttransform 

Implementation of TeX primitives relating to text transforming (hyphenation, upper and lower casing).

The theme of the primitives here (\lccode, \lowercase, \patterns) is that they’re all related to “tex transformation” (case change, hyphenation). However the real reason they’re grouped is that the hyphenator hyphenates based on each character’s lower case, and so has a dependency on \lccode which defines these cases.

This crate is also a good experiment in how defining registers works outside of the standard lib. At time of writing (May 2026) I can say that it’s not really great. The problem is that having the exact component specified is a but too rigid. For example, I might like multiple registers in the same component.

Structs

HyphenationComponent

LcCodeMarker

UcCodeMarker

Functions

get_hyphenation

Get the \hyphenation primitive.

get_lccode

Get the \lccode command.

get_lowercase

Get the \lowercase expansion primitive.

get_patterns

Get the \patterns primitive.

get_uccode

Get the \uccode command.

get_uppercase

Get the \uppercase expansion primitive.

Type Aliases

LcCodeComponent

Component that holds the 256 \lccode values.

UcCodeComponent

Component that holds the 256 \uccode values.