{"abstract":"Legacy HTML numeric references decode as raw controls.","category":"Markup","checks":4,"contract":"Decode HTML references with HTML invalid-codepoint replacement and Windows-1252 remapping.","evaluation_group":"model-12bcdf48fec8205a","failed_approach":"The attempted repair handles the primary example but still violates a separate boundary of the same contract.","family":"xp-html-numeric-remap","id":"FA-3226","implementations":{"attempt":{"sha256":"0a7d951f34b15db3eabdade5fc17e880485ef3d4bbb488667e564f19ac8913e2","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 re.sub(r'&#(\\d+);',lambda m:'�' if int(m[1])==0 else chr(int(m[1])),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('€'), '€')\ncheck('boundary 2', solve('�'), '�')\ncheck('boundary 3', solve('�'), '�')\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":"8cfb2f1be5cfc81e6bd027d68bdc0594e5fbbc435fe44c87174cfe80c2b377c3","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 re.sub(r'&#(\\d+);',lambda m:chr(int(m[1])),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('€'), '€')\ncheck('boundary 2', solve('�'), '�')\ncheck('boundary 3', solve('�'), '�')\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":"9801b0a7261ee0ee2e920762156bc2d4e6841acfc8d7413b97a4c43ea19948b0","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 html.unescape(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('€'), '€')\ncheck('boundary 2', solve('�'), '�')\ncheck('boundary 3', solve('�'), '�')\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-html-numeric-remap","generated_at":"2026-09-29T14:37:23.176758+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: Decode HTML references with HTML invalid-codepoint replacement and Windows-1252 remapping.","root_cause":"The implementation applies an operation whose text or grammar semantics violate this contract: Decode HTML references with HTML invalid-codepoint replacement and Windows-1252 remapping.","sha256":"31c991f015af12638ff1275e9956480c03b8f29dac6f2dd6df651b7d3faea4c1","title":"Legacy HTML numeric references decode as raw controls · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":61.956,"exit_code":1,"observations":[{"actual":"€","check":"boundary 1","expected":"€","passed":false},{"actual":"�","check":"boundary 2","expected":"�","passed":true},{"actual":"�","check":"boundary 3","expected":"�","passed":false},{"actual":"A","check":"boundary 4","expected":"A","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"€\", \"expected\": \"€\", \"passed\": false}, {\"check\": \"boundary 2\", \"actual\": \"�\", \"expected\": \"�\", \"passed\": true}, {\"check\": \"boundary 3\", \"actual\": \"�\", \"expected\": \"�\", \"passed\": false}, {\"check\": \"boundary 4\", \"actual\": \"A\", \"expected\": \"A\", \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":54.737,"exit_code":1,"observations":[{"actual":"€","check":"boundary 1","expected":"€","passed":false},{"actual":"\u0000","check":"boundary 2","expected":"�","passed":false},{"actual":"�","check":"boundary 3","expected":"�","passed":false},{"actual":"A","check":"boundary 4","expected":"A","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"€\", \"expected\": \"€\", \"passed\": false}, {\"check\": \"boundary 2\", \"actual\": \"\\u0000\", \"expected\": \"�\", \"passed\": false}, {\"check\": \"boundary 3\", \"actual\": \"�\", \"expected\": \"�\", \"passed\": false}, {\"check\": \"boundary 4\", \"actual\": \"A\", \"expected\": \"A\", \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":55.02,"exit_code":0,"observations":[{"actual":"€","check":"boundary 1","expected":"€","passed":true},{"actual":"�","check":"boundary 2","expected":"�","passed":true},{"actual":"�","check":"boundary 3","expected":"�","passed":true},{"actual":"A","check":"boundary 4","expected":"A","passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"€\", \"expected\": \"€\", \"passed\": true}, {\"check\": \"boundary 2\", \"actual\": \"�\", \"expected\": \"�\", \"passed\": true}, {\"check\": \"boundary 3\", \"actual\": \"�\", \"expected\": \"�\", \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": \"A\", \"expected\": \"A\", \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}