A pattern-triggered transform. match runs against the block text from its
start to the caret plus the just-typed character, and must anchor at the
end ($). When it fires, the typed character is never inserted. The rule
produces the whole transaction.
A pattern-triggered transform.
matchruns against the block text from its start to the caret plus the just-typed character, and must anchor at the end ($). When it fires, the typed character is never inserted. The rule produces the whole transaction.