patgen – Generate hyphenation patterns

This is the last ver­sion of the pro­gram dis­tributed by Knuth; it ad­ver­tises it­self as a pat­tern gen­er­a­tor for “the al­go­rithm used in TeX”, but, of course, the pat­terns used in mod­ern dis­tri­bu­tions are Uni­code-based.