def lex.head.br2
import emerging-eztoml@0.9.0.0/main.bend as EmergingEztomlimport Base
3797# one extra bracket
3798def lex.head.br2(once: Bool, st: St) -> St:
3799 match once:
3800 case False{}:
3801 st.err(st, "invalid header")
3802 case True{}:
3803 lex.head.arr(st)