{"abstract":"Hangul syllables bypass canonical decomposition.","category":"Unicode","checks":4,"contract":"Produce canonical NFD decomposition; retain compatibility glyphs.","evaluation_group":"model-adc11c2691f0902b","failed_approach":"The attempted repair handles the primary example but still violates a separate boundary of the same contract.","family":"xp-nfd-hangul","id":"FA-2841","implementations":{"attempt":{"sha256":"0fd07f0ae3e558a77b28044bf77ac32da3f3c1318ec56030629127035c6884ea","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport re, unicodedata, json, csv, io, html, base64, binascii, codecs, struct\nfrom urllib.parse import quote, unquote, unquote_to_bytes, urlencode, parse_qsl, urlsplit, urlunsplit\nfrom email.header import decode_header, make_header\nfrom email.utils import getaddresses\nfrom xml.etree import ElementTree as ET\nimport shlex, string, textwrap\n\nN = 1\nobservations = []\ndef solve(x):\n    try:\n        return ''.join(c for c in unicodedata.normalize('NFKD', x))\n    except Exception as exc:\n        return {\"error\": type(exc).__name__}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('boundary 1', solve('가'), '가')\ncheck('boundary 2', solve('é'), 'é')\ncheck('boundary 3', solve('①'), '①')\ncheck('boundary 4', solve('A'), 'A')\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":"8bdd8a946367f738c2c47eda3a16508cee3737eb4493eb37531398724e15ea2c","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport re, unicodedata, json, csv, io, html, base64, binascii, codecs, struct\nfrom urllib.parse import quote, unquote, unquote_to_bytes, urlencode, parse_qsl, urlsplit, urlunsplit\nfrom email.header import decode_header, make_header\nfrom email.utils import getaddresses\nfrom xml.etree import ElementTree as ET\nimport shlex, string, textwrap\n\nN = 1\nobservations = []\ndef solve(x):\n    try:\n        return x\n    except Exception as exc:\n        return {\"error\": type(exc).__name__}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('boundary 1', solve('가'), '가')\ncheck('boundary 2', solve('é'), 'é')\ncheck('boundary 3', solve('①'), '①')\ncheck('boundary 4', solve('A'), 'A')\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":"bdf0aa588bc798567c4513dd79d16cc4bfbb9fc142a89060091a5097d12f3ab5","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport re, unicodedata, json, csv, io, html, base64, binascii, codecs, struct\nfrom urllib.parse import quote, unquote, unquote_to_bytes, urlencode, parse_qsl, urlsplit, urlunsplit\nfrom email.header import decode_header, make_header\nfrom email.utils import getaddresses\nfrom xml.etree import ElementTree as ET\nimport shlex, string, textwrap\n\nN = 1\nobservations = []\ndef solve(x):\n    try:\n        return unicodedata.normalize('NFD', x)\n    except Exception as exc:\n        return {\"error\": type(exc).__name__}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('boundary 1', solve('가'), '가')\ncheck('boundary 2', solve('é'), 'é')\ncheck('boundary 3', solve('①'), '①')\ncheck('boundary 4', solve('A'), 'A')\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":" 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":"xp-nfd-hangul","generated_at":"2026-09-29T14:37:18.014840+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"A local executable model for consumers of structured text; oracle values are authored literals, not outputs copied from the repaired implementation.","repair":"Implement the complete stated contract, including the boundary fixtures: Produce canonical NFD decomposition; retain compatibility glyphs.","root_cause":"The implementation applies an operation whose text or grammar semantics violate this contract: Produce canonical NFD decomposition; retain compatibility glyphs.","sha256":"720dd90d417b264a4ef481d35f8c5fee0b7d71656fdd934ff7c1388dd1806af2","title":"Hangul syllables bypass canonical decomposition · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":140.458,"exit_code":1,"observations":[{"actual":"가","check":"boundary 1","expected":"가","passed":true},{"actual":"é","check":"boundary 2","expected":"é","passed":true},{"actual":"1","check":"boundary 3","expected":"①","passed":false},{"actual":"A","check":"boundary 4","expected":"A","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"가\", \"expected\": \"가\", \"passed\": true}, {\"check\": \"boundary 2\", \"actual\": \"é\", \"expected\": \"é\", \"passed\": true}, {\"check\": \"boundary 3\", \"actual\": \"1\", \"expected\": \"①\", \"passed\": false}, {\"check\": \"boundary 4\", \"actual\": \"A\", \"expected\": \"A\", \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":64.086,"exit_code":1,"observations":[{"actual":"가","check":"boundary 1","expected":"가","passed":false},{"actual":"é","check":"boundary 2","expected":"é","passed":false},{"actual":"①","check":"boundary 3","expected":"①","passed":true},{"actual":"A","check":"boundary 4","expected":"A","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"가\", \"expected\": \"가\", \"passed\": false}, {\"check\": \"boundary 2\", \"actual\": \"é\", \"expected\": \"é\", \"passed\": false}, {\"check\": \"boundary 3\", \"actual\": \"①\", \"expected\": \"①\", \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": \"A\", \"expected\": \"A\", \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":50.674,"exit_code":0,"observations":[{"actual":"가","check":"boundary 1","expected":"가","passed":true},{"actual":"é","check":"boundary 2","expected":"é","passed":true},{"actual":"①","check":"boundary 3","expected":"①","passed":true},{"actual":"A","check":"boundary 4","expected":"A","passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"가\", \"expected\": \"가\", \"passed\": true}, {\"check\": \"boundary 2\", \"actual\": \"é\", \"expected\": \"é\", \"passed\": true}, {\"check\": \"boundary 3\", \"actual\": \"①\", \"expected\": \"①\", \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": \"A\", \"expected\": \"A\", \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}