{"abstract":"Incomplete marking gesture executes a branch-only menu item.","category":"Menu interactions","checks":8,"contract":"A marking menu resolves completed directional strokes after sufficient displacement. Cardinal directions are 0..3; an opposite segment retraces one level, and subthreshold tail jitter preserves the completed sector.","evaluation_group":"s3-menu-interactions-marking-menu-gesture","failed_approach":"The attempted repair `p['kind']=='command'` still violates the leaf-required oracle.","family":"s3-menu-interactions-marking-menu-gesture-leaf-required","id":"FA-33351","implementations":{"attempt":{"sha256":"4ff283f50c68313c6578286a6db28d951caaa7520dfec639100ae68a62c71096","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nimport unicodedata\nN = 1\nobservations = []\ndef solve(action, p):\n    if action == 'origin':\n        return [p['end'][0]-p['start'][0],p['end'][1]-p['start'][1]]\n    if action == 'threshold':\n        return p['dx']**2+p['dy']**2>=p['threshold']**2\n    if action == 'retrace':\n        return p['segments'][:-1] if p['direction']==(p['segments'][-1]+2)%4 else p['segments']+[p['direction']]\n    if action == 'segment-reset':\n        return p['turn'][:]\n    if action == 'leaf-required':\n        return p['kind']=='command'\n    if action == 'trailing-jitter':\n        return p['completed'][-1] if p['tail_distance']<p['threshold'] else p['tail_sector']\n    return {'error': 'unsupported menu operation'}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('origin contract', solve('origin', {'start':[N,N+1],'end':[N+3,N+5]}), [3,4])\ncheck('threshold contract', solve('threshold', {'dx':3*N,'dy':4*N,'threshold':6*N}), False)\ncheck('retrace contract', solve('retrace', {'segments':[N%4,(N+1)%4,(N+2)%4],'direction':N%4}), [N%4,(N+1)%4])\ncheck('segment-reset contract', solve('segment-reset', {'turn':[N+2,N+3],'original':[0,0],'last':[N+5,N+6]}), [N+2,N+3])\ncheck('leaf-required contract', solve('leaf-required', {'kind':'submenu','complete':True,'sector':N}), False)\ncheck('trailing-jitter contract', solve('trailing-jitter', {'completed':[N,N+1],'tail_sector':N+2,'tail_distance':1,'threshold':5}), N+1)\ncheck('unknown operation', solve('unknown', {}), {'error': 'unsupported menu operation'})\ncheck('incomplete command stroke',solve('leaf-required',{'kind':'command','complete':False,'sector':N}),False)\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":"281004f1fc80018dfdcbfee14f01410dee2f09a0eacb90636369987ca6d9f9db","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nimport unicodedata\nN = 1\nobservations = []\ndef solve(action, p):\n    if action == 'origin':\n        return [p['end'][0]-p['start'][0],p['end'][1]-p['start'][1]]\n    if action == 'threshold':\n        return p['dx']**2+p['dy']**2>=p['threshold']**2\n    if action == 'retrace':\n        return p['segments'][:-1] if p['direction']==(p['segments'][-1]+2)%4 else p['segments']+[p['direction']]\n    if action == 'segment-reset':\n        return p['turn'][:]\n    if action == 'leaf-required':\n        return p['complete']\n    if action == 'trailing-jitter':\n        return p['completed'][-1] if p['tail_distance']<p['threshold'] else p['tail_sector']\n    return {'error': 'unsupported menu operation'}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('origin contract', solve('origin', {'start':[N,N+1],'end':[N+3,N+5]}), [3,4])\ncheck('threshold contract', solve('threshold', {'dx':3*N,'dy':4*N,'threshold':6*N}), False)\ncheck('retrace contract', solve('retrace', {'segments':[N%4,(N+1)%4,(N+2)%4],'direction':N%4}), [N%4,(N+1)%4])\ncheck('segment-reset contract', solve('segment-reset', {'turn':[N+2,N+3],'original':[0,0],'last':[N+5,N+6]}), [N+2,N+3])\ncheck('leaf-required contract', solve('leaf-required', {'kind':'submenu','complete':True,'sector':N}), False)\ncheck('trailing-jitter contract', solve('trailing-jitter', {'completed':[N,N+1],'tail_sector':N+2,'tail_distance':1,'threshold':5}), N+1)\ncheck('unknown operation', solve('unknown', {}), {'error': 'unsupported menu operation'})\ncheck('incomplete command stroke',solve('leaf-required',{'kind':'command','complete':False,'sector':N}),False)\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":"8825f271e7984158afaa648db7b5f78eade2a1706266fa4e3251b67f17ce1888","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport math\nimport unicodedata\nN = 1\nobservations = []\ndef solve(action, p):\n    if action == 'origin':\n        return [p['end'][0]-p['start'][0],p['end'][1]-p['start'][1]]\n    if action == 'threshold':\n        return p['dx']**2+p['dy']**2>=p['threshold']**2\n    if action == 'retrace':\n        return p['segments'][:-1] if p['direction']==(p['segments'][-1]+2)%4 else p['segments']+[p['direction']]\n    if action == 'segment-reset':\n        return p['turn'][:]\n    if action == 'leaf-required':\n        return p['kind']=='command' and p['complete']\n    if action == 'trailing-jitter':\n        return p['completed'][-1] if p['tail_distance']<p['threshold'] else p['tail_sector']\n    return {'error': 'unsupported menu operation'}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('origin contract', solve('origin', {'start':[N,N+1],'end':[N+3,N+5]}), [3,4])\ncheck('threshold contract', solve('threshold', {'dx':3*N,'dy':4*N,'threshold':6*N}), False)\ncheck('retrace contract', solve('retrace', {'segments':[N%4,(N+1)%4,(N+2)%4],'direction':N%4}), [N%4,(N+1)%4])\ncheck('segment-reset contract', solve('segment-reset', {'turn':[N+2,N+3],'original':[0,0],'last':[N+5,N+6]}), [N+2,N+3])\ncheck('leaf-required contract', solve('leaf-required', {'kind':'submenu','complete':True,'sector':N}), False)\ncheck('trailing-jitter contract', solve('trailing-jitter', {'completed':[N,N+1],'tail_sector':N+2,'tail_distance':1,'threshold':5}), N+1)\ncheck('unknown operation', solve('unknown', {}), {'error': 'unsupported menu operation'})\ncheck('incomplete command stroke',solve('leaf-required',{'kind':'command','complete':False,'sector':N}),False)\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":"Offline supplied-valid-payload model; excludes DOM, keyboard, focus, selection, announcements and browser conformance. 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":"s3-menu-interactions-marking-menu-gesture-leaf-required","generated_at":"2026-09-29T14:42:21.544468+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Cascading and context menus require coherent command and session state as content changes.","repair":"Apply `p['kind']=='command' and p['complete']` at leaf-required.","root_cause":"The marking-menu-gesture model applies `p['complete']` at its leaf-required operation instead of the stipulated transformation.","sha256":"e8c714766357b1d7694ffea293932284d1251fae48bf7af394f0f80f9a90b5ea","title":"Incomplete marking gesture executes a branch-only menu item · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":41.498,"exit_code":1,"observations":[{"actual":[3,4],"check":"origin contract","expected":[3,4],"passed":true},{"actual":false,"check":"threshold contract","expected":false,"passed":true},{"actual":[1,2],"check":"retrace contract","expected":[1,2],"passed":true},{"actual":[3,4],"check":"segment-reset contract","expected":[3,4],"passed":true},{"actual":false,"check":"leaf-required contract","expected":false,"passed":true},{"actual":2,"check":"trailing-jitter contract","expected":2,"passed":true},{"actual":{"error":"unsupported menu operation"},"check":"unknown operation","expected":{"error":"unsupported menu operation"},"passed":true},{"actual":true,"check":"incomplete command stroke","expected":false,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"origin contract\", \"actual\": [3, 4], \"expected\": [3, 4], \"passed\": true}, {\"check\": \"threshold contract\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"retrace contract\", \"actual\": [1, 2], \"expected\": [1, 2], \"passed\": true}, {\"check\": \"segment-reset contract\", \"actual\": [3, 4], \"expected\": [3, 4], \"passed\": true}, {\"check\": \"leaf-required contract\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"trailing-jitter contract\", \"actual\": 2, \"expected\": 2, \"passed\": true}, {\"check\": \"unknown operation\", \"actual\": {\"error\": \"unsupported menu operation\"}, \"expected\": {\"error\": \"unsupported menu operation\"}, \"passed\": true}, {\"check\": \"incomplete command stroke\", \"actual\": true, \"expected\": false, \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":44.403,"exit_code":1,"observations":[{"actual":[3,4],"check":"origin contract","expected":[3,4],"passed":true},{"actual":false,"check":"threshold contract","expected":false,"passed":true},{"actual":[1,2],"check":"retrace contract","expected":[1,2],"passed":true},{"actual":[3,4],"check":"segment-reset contract","expected":[3,4],"passed":true},{"actual":true,"check":"leaf-required contract","expected":false,"passed":false},{"actual":2,"check":"trailing-jitter contract","expected":2,"passed":true},{"actual":{"error":"unsupported menu operation"},"check":"unknown operation","expected":{"error":"unsupported menu operation"},"passed":true},{"actual":false,"check":"incomplete command stroke","expected":false,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"origin contract\", \"actual\": [3, 4], \"expected\": [3, 4], \"passed\": true}, {\"check\": \"threshold contract\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"retrace contract\", \"actual\": [1, 2], \"expected\": [1, 2], \"passed\": true}, {\"check\": \"segment-reset contract\", \"actual\": [3, 4], \"expected\": [3, 4], \"passed\": true}, {\"check\": \"leaf-required contract\", \"actual\": true, \"expected\": false, \"passed\": false}, {\"check\": \"trailing-jitter contract\", \"actual\": 2, \"expected\": 2, \"passed\": true}, {\"check\": \"unknown operation\", \"actual\": {\"error\": \"unsupported menu operation\"}, \"expected\": {\"error\": \"unsupported menu operation\"}, \"passed\": true}, {\"check\": \"incomplete command stroke\", \"actual\": false, \"expected\": false, \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":41.041,"exit_code":0,"observations":[{"actual":[3,4],"check":"origin contract","expected":[3,4],"passed":true},{"actual":false,"check":"threshold contract","expected":false,"passed":true},{"actual":[1,2],"check":"retrace contract","expected":[1,2],"passed":true},{"actual":[3,4],"check":"segment-reset contract","expected":[3,4],"passed":true},{"actual":false,"check":"leaf-required contract","expected":false,"passed":true},{"actual":2,"check":"trailing-jitter contract","expected":2,"passed":true},{"actual":{"error":"unsupported menu operation"},"check":"unknown operation","expected":{"error":"unsupported menu operation"},"passed":true},{"actual":false,"check":"incomplete command stroke","expected":false,"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"origin contract\", \"actual\": [3, 4], \"expected\": [3, 4], \"passed\": true}, {\"check\": \"threshold contract\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"retrace contract\", \"actual\": [1, 2], \"expected\": [1, 2], \"passed\": true}, {\"check\": \"segment-reset contract\", \"actual\": [3, 4], \"expected\": [3, 4], \"passed\": true}, {\"check\": \"leaf-required contract\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"trailing-jitter contract\", \"actual\": 2, \"expected\": 2, \"passed\": true}, {\"check\": \"unknown operation\", \"actual\": {\"error\": \"unsupported menu operation\"}, \"expected\": {\"error\": \"unsupported menu operation\"}, \"passed\": true}, {\"check\": \"incomplete command stroke\", \"actual\": false, \"expected\": false, \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}