{"abstract":"An inline comment marker truncates quoted data.","category":"Parsing","checks":4,"contract":"Strip from first hash outside double quotes; quote escapes are not supported in this compact grammar.","evaluation_group":"model-4845ef1f81feb51b","failed_approach":"The attempted repair handles the primary example but still violates a separate boundary of the same contract.","family":"xp-line-comment-quote-aware","id":"FA-3806","implementations":{"attempt":{"sha256":"118d8194ce046c71c69f1abfb2e3b1181ffc0e39f7d722d4a9b185932d264767","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.rsplit('#',1)[0] if '#' in x else 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('a \"#b\" #c'), 'a \"#b\" ')\ncheck('boundary 2', solve('a #b #c'), 'a ')\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":"2f0d858492d1a8d48b5700dec56a63d4a081d2f16f1fa64fe1ef89952267b16f","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.split('#',1)[0]\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('a \"#b\" #c'), 'a \"#b\" ')\ncheck('boundary 2', solve('a #b #c'), 'a ')\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":"a89541bce8c2fa9b6057b16b25468e7557b568929022df9c6888cec8b1acc8db","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        quoted=False\n        for i,c in enumerate(x):\n            if c=='\"': quoted=not quoted\n            elif c=='#' and not quoted: return x[:i]\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('a \"#b\" #c'), 'a \"#b\" ')\ncheck('boundary 2', solve('a #b #c'), 'a ')\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-line-comment-quote-aware","generated_at":"2026-09-29T14:37:31.207155+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: Strip from first hash outside double quotes; quote escapes are not supported in this compact grammar.","root_cause":"The implementation applies an operation whose text or grammar semantics violate this contract: Strip from first hash outside double quotes; quote escapes are not supported in this compact grammar.","sha256":"c48a8b240a8bceb5e8682002b24621711d4027758fc0369c51db39726e84944e","title":"An inline comment marker truncates quoted data · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":123.446,"exit_code":1,"observations":[{"actual":"a \"#b\" ","check":"boundary 1","expected":"a \"#b\" ","passed":true},{"actual":"a #b ","check":"boundary 2","expected":"a ","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\": \"a \\\"#b\\\" \", \"expected\": \"a \\\"#b\\\" \", \"passed\": true}, {\"check\": \"boundary 2\", \"actual\": \"a #b \", \"expected\": \"a \", \"passed\": false}, {\"check\": \"boundary 3\", \"actual\": \"\\\"\", \"expected\": \"\\\"#\\\"\", \"passed\": false}, {\"check\": \"boundary 4\", \"actual\": \"a\", \"expected\": \"a\", \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":56.537,"exit_code":1,"observations":[{"actual":"a \"","check":"boundary 1","expected":"a \"#b\" ","passed":false},{"actual":"a ","check":"boundary 2","expected":"a ","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\": \"a \\\"\", \"expected\": \"a \\\"#b\\\" \", \"passed\": false}, {\"check\": \"boundary 2\", \"actual\": \"a \", \"expected\": \"a \", \"passed\": true}, {\"check\": \"boundary 3\", \"actual\": \"\\\"\", \"expected\": \"\\\"#\\\"\", \"passed\": false}, {\"check\": \"boundary 4\", \"actual\": \"a\", \"expected\": \"a\", \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":51.474,"exit_code":0,"observations":[{"actual":"a \"#b\" ","check":"boundary 1","expected":"a \"#b\" ","passed":true},{"actual":"a ","check":"boundary 2","expected":"a ","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\": \"a \\\"#b\\\" \", \"expected\": \"a \\\"#b\\\" \", \"passed\": true}, {\"check\": \"boundary 2\", \"actual\": \"a \", \"expected\": \"a \", \"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"}