-- Match arms accept brace-block bodies: ~v:{stmt;stmt;final-expr}.
-- Final statement of the block is the arm value; mirrors =cond{block}.
-- Inline ;-separated bodies still work; brace form just disambiguates.
-- Brace block with a local binding inside an Ok arm
parse-ok>n;r=num "10";?r{~v:{d=*v 2;+d 1};^_:0}
-- Brace block on the Err arm
parse-bad>t;r=num "oops";?r{~v:str v;^er:{tag="err: ";+tag er}}
-- Nested match inside a brace-block arm
classify>t;r=num "0";?r{~v:{?v{0:"zero";_:"nonzero"}};^_:"bad"}
-- Multi-line bool match with brace blocks (each branch does setup work)
report b:b>t;?b{true:{tag="OK: ";+tag "all good"};false:{tag="FAIL: ";+tag "see logs"}}
-- run: parse-ok
-- out: 21
-- run: parse-bad
-- out: err: oops
-- run: classify
-- out: zero
-- run: report true
-- out: OK: all good
-- run: report false
-- out: FAIL: see logs