Hi, are the definitions for \checknextinjector and \checkpreviousinjector correct because \checkpreviousinjector takes a argument but \checknextinjector doesn’t? typo-inj.mkiv: \unexpanded\def\checknextinjector {\clf_checknextinjector} \unexpanded\def\checkpreviousinjector {\clf_checkpreviousinjector} typo-inj.lua: implement { name = "checkpreviousinjector", actions = injectors.check, arguments = { "string", true } } implement { name = "checknextinjector", actions = injectors.check } Wolfgang