{"abstract":"A closer that does not match the top opener is dropped although its opener is deeper.","category":"Bidirectional text layout","checks":8,"contract":"Input [text, classes, stack limit]. Only characters of class ON take part. Openers ( [ { are pushed; on overflow of the stack limit stop and keep pairs found so far. A closer searches the stack from the top for its opener; if found it pairs and discards that entry and everything above; otherwise it is ignored. Return pairs sorted by opener.","evaluation_group":"w2-bidirectional-text-layout-bracket-pairs","failed_approach":"Deleting only the matched entry leaves stale openers above it.","family":"w2-bidirectional-text-layout-bracket-pairs-mismatched-closer-search","id":"FA-80586","implementations":{"attempt":{"sha256":"dd4e8b9fcc567f0c90314e58b659543d0e576586815b99b527be72f9ae4c14ed","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    text, classes, limit = x\n    OPEN = {'(': ')', '[': ']', '{': '}'}\n    CLOSE = {')', ']', '}'}\n    stack = []\n    pairs = []\n    for i, ch in enumerate(text):\n        if classes[i] != 'ON':\n            continue\n        if ch in OPEN:\n            if len(stack) >= limit:\n                break\n            stack.append((OPEN[ch], i))\n        elif ch in CLOSE:\n            for k in range(len(stack) - 1, -1, -1):\n                if stack[k][0] == ch:\n                    pairs.append([stack[k][1], i])\n                    del stack[k]\n                    break\n    return sorted(pairs)\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('mismatched inner bracket', ['([)]', ['ON', 'ON', 'ON', 'ON'], 4], [[0, 2]]), ('regression: mismatched closer search', ['[(]{)][}()(', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], [[0, 2], [3, 7], [8, 9]]), ('regression: mismatched closer search', ['(][}([())}}(]', ['ON', 'ON', 'L', 'ON', 'R', 'ON', 'L', 'R', 'ON', 'ON', 'R', 'ON', 'ON'], 3], [[0, 8]]), ('regression: mismatched closer search', ['a([{][[}()]()(', ['R', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'ON', 'ON', 'ON', 'L', 'L', 'ON', 'ON'], 4], [[1, 12], [2, 4], [8, 9]]), ('stack overflow stops', ['((()))', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], []), ('overridden bracket ignored', ['(a)', ['R', 'L', 'ON'], 4], []), ('control layout', ['a](((', ['L', 'L', 'ON', 'R', 'ON'], 3], []), ('control layout', ['a([([', ['R', 'ON', 'ON', 'ON', 'ON'], 1], [])], [('regression: mismatched closer search', ['(a)a)[(]{(]}a)', ['ON', 'R', 'ON', 'R', 'L', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'L', 'L', 'ON'], 3], [[0, 2], [5, 7]]), ('regression: mismatched closer search', ['{][{(a}([{(({', ['ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'ON', 'ON', 'R', 'ON', 'ON', 'ON'], 4], [[3, 6]]), ('regression: mismatched closer search', ['[(]{)][}()(', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], [[0, 2], [3, 7], [8, 9]]), ('regression: mismatched closer search', ['{({]{{()(}[', ['R', 'ON', 'ON', 'ON', 'L', 'ON', 'R', 'ON', 'ON', 'ON', 'R'], 4], [[1, 7]]), ('overridden bracket ignored', ['(a)', ['R', 'L', 'ON'], 4], []), ('stack overflow stops', ['((()))', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], []), ('control layout', ['[a[(}](][(){)', ['L', 'R', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'ON', 'ON', 'ON', 'L', 'ON'], 1], []), ('control layout', ['{}]]a(', ['ON', 'ON', 'R', 'ON', 'R', 'ON'], 4], [[0, 1]])], [('regression: mismatched closer search', ['{({]{{()(}[', ['R', 'ON', 'ON', 'ON', 'L', 'ON', 'R', 'ON', 'ON', 'ON', 'R'], 4], [[1, 7]]), ('regression: mismatched closer search', [']}))]{(}]))]', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'ON'], 4], [[5, 7]]), ('regression: mismatched closer search', ['{[(]aa)a][', ['ON', 'ON', 'ON', 'ON', 'R', 'R', 'ON', 'R', 'ON', 'L'], 3], [[1, 3]]), ('regression: mismatched closer search', ['{(}){aa{(', ['ON', 'ON', 'ON', 'ON', 'ON', 'L', 'R', 'ON', 'ON'], 3], [[0, 2]]), ('mismatched inner bracket', ['([)]', ['ON', 'ON', 'ON', 'ON'], 4], [[0, 2]]), ('stack overflow stops', ['((()))', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], []), ('control layout', ['(a', ['ON', 'L'], 3], []), ('control layout', ['[(', ['ON', 'ON'], 2], [])], [('regression: mismatched closer search', [']}))]{(}]))]', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'ON'], 4], [[5, 7]]), ('regression: mismatched closer search', ['[a{({)', ['ON', 'L', 'ON', 'ON', 'ON', 'ON'], 4], [[3, 5]]), ('regression: mismatched closer search', ['{a([a)([()][)]', ['L', 'R', 'ON', 'ON', 'R', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 4], [[2, 5], [6, 12], [7, 10], [8, 9]]), ('regression: mismatched closer search', ['a{({[}}]]((', ['L', 'R', 'R', 'ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'ON'], 4], [[3, 5]]), ('stack overflow stops', ['((()))', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], []), ('overridden bracket ignored', ['(a)', ['R', 'L', 'ON'], 4], []), ('control layout', ['(}(', ['ON', 'ON', 'L'], 1], []), ('control layout', [')([()[]a((})', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'ON', 'ON', 'ON', 'ON'], 1], [])], [('regression: mismatched closer search', ['}(}}[))}', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON'], 4], [[1, 5]]), ('regression: mismatched closer search', ['{(}{(', ['ON', 'ON', 'ON', 'R', 'ON'], 3], [[0, 2]]), ('regression: mismatched closer search', ['}[(]]([aa()(}]', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'L', 'ON', 'ON', 'ON', 'ON', 'ON'], 3], [[1, 3], [6, 13], [9, 10]]), ('regression: mismatched closer search', [']({(}{()a}(})a', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'R', 'L', 'ON', 'ON', 'ON', 'R'], 4], [[1, 12], [2, 4], [5, 11]]), ('overridden bracket ignored', ['(a)', ['R', 'L', 'ON'], 4], []), ('mismatched inner bracket', ['([)]', ['ON', 'ON', 'ON', 'ON'], 4], [[0, 2]]), ('control layout', ['{({{{{}a((a', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'ON', 'R', 'L'], 2], []), ('control layout', [')a(', ['ON', 'R', 'ON'], 4], [])]]\nfor label, args, expected in fixtures[N - 1]:\n    check(label, solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"33de3930bcc0c2e79f77d5e2f939199aeaad2864d08a9f69857a3c2d93455860","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    text, classes, limit = x\n    OPEN = {'(': ')', '[': ']', '{': '}'}\n    CLOSE = {')', ']', '}'}\n    stack = []\n    pairs = []\n    for i, ch in enumerate(text):\n        if classes[i] != 'ON':\n            continue\n        if ch in OPEN:\n            if len(stack) >= limit:\n                break\n            stack.append((OPEN[ch], i))\n        elif ch in CLOSE:\n            if stack and stack[-1][0] == ch:\n                pairs.append([stack[-1][1], i])\n                stack.pop()\n    return sorted(pairs)\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('mismatched inner bracket', ['([)]', ['ON', 'ON', 'ON', 'ON'], 4], [[0, 2]]), ('regression: mismatched closer search', ['[(]{)][}()(', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], [[0, 2], [3, 7], [8, 9]]), ('regression: mismatched closer search', ['(][}([())}}(]', ['ON', 'ON', 'L', 'ON', 'R', 'ON', 'L', 'R', 'ON', 'ON', 'R', 'ON', 'ON'], 3], [[0, 8]]), ('regression: mismatched closer search', ['a([{][[}()]()(', ['R', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'ON', 'ON', 'ON', 'L', 'L', 'ON', 'ON'], 4], [[1, 12], [2, 4], [8, 9]]), ('stack overflow stops', ['((()))', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], []), ('overridden bracket ignored', ['(a)', ['R', 'L', 'ON'], 4], []), ('control layout', ['a](((', ['L', 'L', 'ON', 'R', 'ON'], 3], []), ('control layout', ['a([([', ['R', 'ON', 'ON', 'ON', 'ON'], 1], [])], [('regression: mismatched closer search', ['(a)a)[(]{(]}a)', ['ON', 'R', 'ON', 'R', 'L', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'L', 'L', 'ON'], 3], [[0, 2], [5, 7]]), ('regression: mismatched closer search', ['{][{(a}([{(({', ['ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'ON', 'ON', 'R', 'ON', 'ON', 'ON'], 4], [[3, 6]]), ('regression: mismatched closer search', ['[(]{)][}()(', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], [[0, 2], [3, 7], [8, 9]]), ('regression: mismatched closer search', ['{({]{{()(}[', ['R', 'ON', 'ON', 'ON', 'L', 'ON', 'R', 'ON', 'ON', 'ON', 'R'], 4], [[1, 7]]), ('overridden bracket ignored', ['(a)', ['R', 'L', 'ON'], 4], []), ('stack overflow stops', ['((()))', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], []), ('control layout', ['[a[(}](][(){)', ['L', 'R', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'ON', 'ON', 'ON', 'L', 'ON'], 1], []), ('control layout', ['{}]]a(', ['ON', 'ON', 'R', 'ON', 'R', 'ON'], 4], [[0, 1]])], [('regression: mismatched closer search', ['{({]{{()(}[', ['R', 'ON', 'ON', 'ON', 'L', 'ON', 'R', 'ON', 'ON', 'ON', 'R'], 4], [[1, 7]]), ('regression: mismatched closer search', [']}))]{(}]))]', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'ON'], 4], [[5, 7]]), ('regression: mismatched closer search', ['{[(]aa)a][', ['ON', 'ON', 'ON', 'ON', 'R', 'R', 'ON', 'R', 'ON', 'L'], 3], [[1, 3]]), ('regression: mismatched closer search', ['{(}){aa{(', ['ON', 'ON', 'ON', 'ON', 'ON', 'L', 'R', 'ON', 'ON'], 3], [[0, 2]]), ('mismatched inner bracket', ['([)]', ['ON', 'ON', 'ON', 'ON'], 4], [[0, 2]]), ('stack overflow stops', ['((()))', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], []), ('control layout', ['(a', ['ON', 'L'], 3], []), ('control layout', ['[(', ['ON', 'ON'], 2], [])], [('regression: mismatched closer search', [']}))]{(}]))]', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'ON'], 4], [[5, 7]]), ('regression: mismatched closer search', ['[a{({)', ['ON', 'L', 'ON', 'ON', 'ON', 'ON'], 4], [[3, 5]]), ('regression: mismatched closer search', ['{a([a)([()][)]', ['L', 'R', 'ON', 'ON', 'R', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 4], [[2, 5], [6, 12], [7, 10], [8, 9]]), ('regression: mismatched closer search', ['a{({[}}]]((', ['L', 'R', 'R', 'ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'ON'], 4], [[3, 5]]), ('stack overflow stops', ['((()))', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], []), ('overridden bracket ignored', ['(a)', ['R', 'L', 'ON'], 4], []), ('control layout', ['(}(', ['ON', 'ON', 'L'], 1], []), ('control layout', [')([()[]a((})', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'ON', 'ON', 'ON', 'ON'], 1], [])], [('regression: mismatched closer search', ['}(}}[))}', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON'], 4], [[1, 5]]), ('regression: mismatched closer search', ['{(}{(', ['ON', 'ON', 'ON', 'R', 'ON'], 3], [[0, 2]]), ('regression: mismatched closer search', ['}[(]]([aa()(}]', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'L', 'ON', 'ON', 'ON', 'ON', 'ON'], 3], [[1, 3], [6, 13], [9, 10]]), ('regression: mismatched closer search', [']({(}{()a}(})a', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'R', 'L', 'ON', 'ON', 'ON', 'R'], 4], [[1, 12], [2, 4], [5, 11]]), ('overridden bracket ignored', ['(a)', ['R', 'L', 'ON'], 4], []), ('mismatched inner bracket', ['([)]', ['ON', 'ON', 'ON', 'ON'], 4], [[0, 2]]), ('control layout', ['{({{{{}a((a', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'ON', 'R', 'L'], 2], []), ('control layout', [')a(', ['ON', 'R', 'ON'], 4], [])]]\nfor label, args, expected in fixtures[N - 1]:\n    check(label, solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"fixed":{"sha256":"119751443ca62baf17980210dce2cc0c62d4b46de55ae08676f6da311edae15e","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    text, classes, limit = x\n    OPEN = {'(': ')', '[': ']', '{': '}'}\n    CLOSE = {')', ']', '}'}\n    stack = []\n    pairs = []\n    for i, ch in enumerate(text):\n        if classes[i] != 'ON':\n            continue\n        if ch in OPEN:\n            if len(stack) >= limit:\n                break\n            stack.append((OPEN[ch], i))\n        elif ch in CLOSE:\n            for k in range(len(stack) - 1, -1, -1):\n                if stack[k][0] == ch:\n                    pairs.append([stack[k][1], i])\n                    del stack[k:]\n                    break\n    return sorted(pairs)\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('mismatched inner bracket', ['([)]', ['ON', 'ON', 'ON', 'ON'], 4], [[0, 2]]), ('regression: mismatched closer search', ['[(]{)][}()(', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], [[0, 2], [3, 7], [8, 9]]), ('regression: mismatched closer search', ['(][}([())}}(]', ['ON', 'ON', 'L', 'ON', 'R', 'ON', 'L', 'R', 'ON', 'ON', 'R', 'ON', 'ON'], 3], [[0, 8]]), ('regression: mismatched closer search', ['a([{][[}()]()(', ['R', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'ON', 'ON', 'ON', 'L', 'L', 'ON', 'ON'], 4], [[1, 12], [2, 4], [8, 9]]), ('stack overflow stops', ['((()))', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], []), ('overridden bracket ignored', ['(a)', ['R', 'L', 'ON'], 4], []), ('control layout', ['a](((', ['L', 'L', 'ON', 'R', 'ON'], 3], []), ('control layout', ['a([([', ['R', 'ON', 'ON', 'ON', 'ON'], 1], [])], [('regression: mismatched closer search', ['(a)a)[(]{(]}a)', ['ON', 'R', 'ON', 'R', 'L', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'L', 'L', 'ON'], 3], [[0, 2], [5, 7]]), ('regression: mismatched closer search', ['{][{(a}([{(({', ['ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'ON', 'ON', 'R', 'ON', 'ON', 'ON'], 4], [[3, 6]]), ('regression: mismatched closer search', ['[(]{)][}()(', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], [[0, 2], [3, 7], [8, 9]]), ('regression: mismatched closer search', ['{({]{{()(}[', ['R', 'ON', 'ON', 'ON', 'L', 'ON', 'R', 'ON', 'ON', 'ON', 'R'], 4], [[1, 7]]), ('overridden bracket ignored', ['(a)', ['R', 'L', 'ON'], 4], []), ('stack overflow stops', ['((()))', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], []), ('control layout', ['[a[(}](][(){)', ['L', 'R', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'ON', 'ON', 'ON', 'L', 'ON'], 1], []), ('control layout', ['{}]]a(', ['ON', 'ON', 'R', 'ON', 'R', 'ON'], 4], [[0, 1]])], [('regression: mismatched closer search', ['{({]{{()(}[', ['R', 'ON', 'ON', 'ON', 'L', 'ON', 'R', 'ON', 'ON', 'ON', 'R'], 4], [[1, 7]]), ('regression: mismatched closer search', [']}))]{(}]))]', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'ON'], 4], [[5, 7]]), ('regression: mismatched closer search', ['{[(]aa)a][', ['ON', 'ON', 'ON', 'ON', 'R', 'R', 'ON', 'R', 'ON', 'L'], 3], [[1, 3]]), ('regression: mismatched closer search', ['{(}){aa{(', ['ON', 'ON', 'ON', 'ON', 'ON', 'L', 'R', 'ON', 'ON'], 3], [[0, 2]]), ('mismatched inner bracket', ['([)]', ['ON', 'ON', 'ON', 'ON'], 4], [[0, 2]]), ('stack overflow stops', ['((()))', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], []), ('control layout', ['(a', ['ON', 'L'], 3], []), ('control layout', ['[(', ['ON', 'ON'], 2], [])], [('regression: mismatched closer search', [']}))]{(}]))]', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'ON'], 4], [[5, 7]]), ('regression: mismatched closer search', ['[a{({)', ['ON', 'L', 'ON', 'ON', 'ON', 'ON'], 4], [[3, 5]]), ('regression: mismatched closer search', ['{a([a)([()][)]', ['L', 'R', 'ON', 'ON', 'R', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 4], [[2, 5], [6, 12], [7, 10], [8, 9]]), ('regression: mismatched closer search', ['a{({[}}]]((', ['L', 'R', 'R', 'ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON', 'ON'], 4], [[3, 5]]), ('stack overflow stops', ['((()))', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON'], 2], []), ('overridden bracket ignored', ['(a)', ['R', 'L', 'ON'], 4], []), ('control layout', ['(}(', ['ON', 'ON', 'L'], 1], []), ('control layout', [')([()[]a((})', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'ON', 'ON', 'ON', 'ON'], 1], [])], [('regression: mismatched closer search', ['}(}}[))}', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'R', 'ON'], 4], [[1, 5]]), ('regression: mismatched closer search', ['{(}{(', ['ON', 'ON', 'ON', 'R', 'ON'], 3], [[0, 2]]), ('regression: mismatched closer search', ['}[(]]([aa()(}]', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'L', 'ON', 'ON', 'ON', 'ON', 'ON'], 3], [[1, 3], [6, 13], [9, 10]]), ('regression: mismatched closer search', [']({(}{()a}(})a', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'R', 'L', 'ON', 'ON', 'ON', 'R'], 4], [[1, 12], [2, 4], [5, 11]]), ('overridden bracket ignored', ['(a)', ['R', 'L', 'ON'], 4], []), ('mismatched inner bracket', ['([)]', ['ON', 'ON', 'ON', 'ON'], 4], [[0, 2]]), ('control layout', ['{({{{{}a((a', ['ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'ON', 'L', 'ON', 'R', 'L'], 2], []), ('control layout', [')a(', ['ON', 'R', 'ON'], 4], [])]]\nfor label, args, expected in fixtures[N - 1]:\n    check(label, solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"A deterministic toy bidi model over stipulated class labels and integer levels; it is inspired by, but does not claim conformance to, any published algorithm. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"w2-bidirectional-text-layout-bracket-pairs-mismatched-closer-search","generated_at":"2026-09-29T14:49:55.410048+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Mixed right-to-left and left-to-right text must resolve levels and visual order exactly, or words, numbers and carets land in the wrong place.","repair":"Search down the stack and discard entries above the match.","root_cause":"Only the top of the stack is compared with the closer.","sha256":"fdc738c6dd11f51c8d694bc252f0618d50b60475af76beb377bf2ff63007dff0","title":"Bracket pair identification: mismatched closer search · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":40.785,"exit_code":1,"observations":[{"actual":[[0,2],[1,3]],"check":"mismatched inner bracket","expected":[[0,2]],"passed":false},{"actual":[[0,2],[1,4],[3,7],[8,9]],"check":"regression: mismatched closer search","expected":[[0,2],[3,7],[8,9]],"passed":false},{"actual":[[0,8],[5,12]],"check":"regression: mismatched closer search","expected":[[0,8]],"passed":false},{"actual":[[1,12],[2,4],[3,7],[8,9]],"check":"regression: mismatched closer search","expected":[[1,12],[2,4],[8,9]],"passed":false},{"actual":[],"check":"stack overflow stops","expected":[],"passed":true},{"actual":[],"check":"overridden bracket ignored","expected":[],"passed":true},{"actual":[],"check":"control layout","expected":[],"passed":true},{"actual":[],"check":"control layout","expected":[],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"mismatched inner bracket\", \"actual\": [[0, 2], [1, 3]], \"expected\": [[0, 2]], \"passed\": false}, {\"check\": \"regression: mismatched closer search\", \"actual\": [[0, 2], [1, 4], [3, 7], [8, 9]], \"expected\": [[0, 2], [3, 7], [8, 9]], \"passed\": false}, {\"check\": \"regression: mismatched closer search\", \"actual\": [[0, 8], [5, 12]], \"expected\": [[0, 8]], \"passed\": false}, {\"check\": \"regression: mismatched closer search\", \"actual\": [[1, 12], [2, 4], [3, 7], [8, 9]], \"expected\": [[1, 12], [2, 4], [8, 9]], \"passed\": false}, {\"check\": \"stack overflow stops\", \"actual\": [], \"expected\": [], \"passed\": true}, {\"check\": \"overridden bracket ignored\", \"actual\": [], \"expected\": [], \"passed\": true}, {\"check\": \"control layout\", \"actual\": [], \"expected\": [], \"passed\": true}, {\"check\": \"control layout\", \"actual\": [], \"expected\": [], \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":40.688,"exit_code":1,"observations":[{"actual":[[1,3]],"check":"mismatched inner 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