{"abstract":"Text-node escaping rewrites ordinary quotes.","category":"Markup","checks":4,"contract":"Escape HTML text ampersands and brackets but leave quote characters literal.","contract_signature":"x","evaluation_group":"model-44ec8927b430b6ac","failed_approach":"The attempted repair handles the primary example but still violates a separate boundary of the same contract.","family":"xp-html-text-quote-preserve","id":"FA-3216","implementations":{"attempt":{"sha256":"0d31444564bbc1365ce9c1da9e5d77e3a252ea230128f5eb9ec3b0f2a8089304","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.replace('<','&lt;').replace('>','&gt;')\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('\"x\"'), '\"x\"')\ncheck('boundary 2', solve(\"'&'\"), \"'&amp;'\")\ncheck('boundary 3', solve('<a>'), '&lt;a&gt;')\ncheck('boundary 4', solve('plain'), 'plain')\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":"6da73d4a4dedaaefd9aac525e99fe5d98065258ecb56ee98547b402a804a5546","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.escape(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('\"x\"'), '\"x\"')\ncheck('boundary 2', solve(\"'&'\"), \"'&amp;'\")\ncheck('boundary 3', solve('<a>'), '&lt;a&gt;')\ncheck('boundary 4', solve('plain'), 'plain')\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-text-quote-preserve","generated_at":"2026-09-29T14:37:22.674025+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.","root_cause":"The implementation applies an operation whose text or grammar semantics violate this contract: Escape HTML text ampersands and brackets but leave quote characters literal.","sha256":"788b120b9e5230f827d1a0c4be267508fb769e3c6bc76079a9ba159b29c79b32","title":"Text-node escaping rewrites ordinary quotes · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":55.733,"exit_code":1,"observations":[{"actual":"\"x\"","check":"boundary 1","expected":"\"x\"","passed":true},{"actual":"'&'","check":"boundary 2","expected":"'&amp;'","passed":false},{"actual":"&lt;a&gt;","check":"boundary 3","expected":"&lt;a&gt;","passed":true},{"actual":"plain","check":"boundary 4","expected":"plain","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"\\\"x\\\"\", \"expected\": \"\\\"x\\\"\", \"passed\": true}, {\"check\": \"boundary 2\", \"actual\": \"'&'\", \"expected\": \"'&amp;'\", \"passed\": false}, {\"check\": \"boundary 3\", \"actual\": \"&lt;a&gt;\", \"expected\": \"&lt;a&gt;\", \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": \"plain\", \"expected\": \"plain\", \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":58.307,"exit_code":1,"observations":[{"actual":"&quot;x&quot;","check":"boundary 1","expected":"\"x\"","passed":false},{"actual":"&#x27;&amp;&#x27;","check":"boundary 2","expected":"'&amp;'","passed":false},{"actual":"&lt;a&gt;","check":"boundary 3","expected":"&lt;a&gt;","passed":true},{"actual":"plain","check":"boundary 4","expected":"plain","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": \"&quot;x&quot;\", \"expected\": \"\\\"x\\\"\", \"passed\": false}, {\"check\": \"boundary 2\", \"actual\": \"&#x27;&amp;&#x27;\", \"expected\": \"'&amp;'\", \"passed\": false}, {\"check\": \"boundary 3\", \"actual\": \"&lt;a&gt;\", \"expected\": \"&lt;a&gt;\", \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": \"plain\", \"expected\": \"plain\", \"passed\": true}], \"passed\": false}\n"}},"member_only":{"stages":["fixed"],"fields":["implementations.fixed","verification.fixed","harness","repair"],"note":"The verified repair, its recorded checks, the repair description, and the scoring harness are available to members."}}