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FA-35436 / Tab interfaces / Open access

Split view clone: shared document · case 01

The tab workspace reports an incorrect shared document.

Verified by executionVariant 1 · 8 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

The shared document decision uses x['new_view'] instead of x['doc'].

THE FAILURE

The shared document decision uses x['new_view'] instead of x['doc'].

Unsuccessful approach: The partial repair x['view'] still violates a workspace boundary or normal case.

Case contract

Cloning a document into an adjacent pane creates a new view identity, shares the current unsaved document revision, copies caret and scroll, and acquires exactly one document view reference.

Why this case matters

Offline tab/panel workspace behavior; no browser or desktop framework is emulated.

1 / The failure

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(x):
    r0 = x['new_view']
    r1 = x['new_view']
    r2 = x['caret']
    r3 = x['scroll']
    r4 = x['buffer_revision']
    r5 = x['view_refs']+1
    return [r0,r1,r2,r3,r4,r5]
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = {1: [({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 40, 'width': 300, 'gutter': 10, 'ratio': 40, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [3, 8], 40, 9, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 40, 'width': 300, 'gutter': 10, 'ratio': 60, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [3, 8], 40, 9, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 40, 'width': 300, 'gutter': 20, 'ratio': 40, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [3, 8], 40, 9, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 0, 'width': 300, 'gutter': 10, 'ratio': 40, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [3, 8], 0, 9, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [0, 0], 'scroll': 40, 'width': 300, 'gutter': 10, 'ratio': 40, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [0, 0], 40, 9, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 40, 'width': 501, 'gutter': 10, 'ratio': 40, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [3, 8], 40, 9, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 40, 'width': 300, 'gutter': 10, 'ratio': 40, 'buffer_revision': 7, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [3, 8], 40, 7, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 40, 'width': 300, 'gutter': 10, 'ratio': 40, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 1}, ['w', 'd', [3, 8], 40, 9, 2])], 2: [({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 80, 'width': 600, 'gutter': 20, 'ratio': 40, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [3, 8], 80, 18, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 80, 'width': 600, 'gutter': 20, 'ratio': 60, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [3, 8], 80, 18, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 80, 'width': 600, 'gutter': 40, 'ratio': 40, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [3, 8], 80, 18, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 0, 'width': 600, 'gutter': 20, 'ratio': 40, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [3, 8], 0, 18, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [0, 0], 'scroll': 80, 'width': 600, 'gutter': 20, 'ratio': 40, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [0, 0], 80, 18, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 80, 'width': 1002, 'gutter': 20, 'ratio': 40, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [3, 8], 80, 18, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 80, 'width': 600, 'gutter': 20, 'ratio': 40, 'buffer_revision': 14, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [3, 8], 80, 14, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 80, 'width': 600, 'gutter': 20, 'ratio': 40, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 2}, ['w', 'd', [3, 8], 80, 18, 3])], 3: [({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 120, 'width': 900, 'gutter': 30, 'ratio': 40, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [3, 8], 120, 27, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 120, 'width': 900, 'gutter': 30, 'ratio': 60, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [3, 8], 120, 27, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 120, 'width': 900, 'gutter': 60, 'ratio': 40, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [3, 8], 120, 27, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 0, 'width': 900, 'gutter': 30, 'ratio': 40, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [3, 8], 0, 27, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [0, 0], 'scroll': 120, 'width': 900, 'gutter': 30, 'ratio': 40, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [0, 0], 120, 27, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 120, 'width': 1503, 'gutter': 30, 'ratio': 40, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [3, 8], 120, 27, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 120, 'width': 900, 'gutter': 30, 'ratio': 40, 'buffer_revision': 21, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [3, 8], 120, 21, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 120, 'width': 900, 'gutter': 30, 'ratio': 40, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 3}, ['w', 'd', [3, 8], 120, 27, 4])], 4: [({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 160, 'width': 1200, 'gutter': 40, 'ratio': 40, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [3, 8], 160, 36, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 160, 'width': 1200, 'gutter': 40, 'ratio': 60, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [3, 8], 160, 36, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 160, 'width': 1200, 'gutter': 80, 'ratio': 40, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [3, 8], 160, 36, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 0, 'width': 1200, 'gutter': 40, 'ratio': 40, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [3, 8], 0, 36, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [0, 0], 'scroll': 160, 'width': 1200, 'gutter': 40, 'ratio': 40, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [0, 0], 160, 36, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 160, 'width': 2004, 'gutter': 40, 'ratio': 40, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [3, 8], 160, 36, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 160, 'width': 1200, 'gutter': 40, 'ratio': 40, 'buffer_revision': 28, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [3, 8], 160, 28, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 160, 'width': 1200, 'gutter': 40, 'ratio': 40, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 4}, ['w', 'd', [3, 8], 160, 36, 5])], 5: [({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 200, 'width': 1500, 'gutter': 50, 'ratio': 40, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [3, 8], 200, 45, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 200, 'width': 1500, 'gutter': 50, 'ratio': 60, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [3, 8], 200, 45, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 200, 'width': 1500, 'gutter': 100, 'ratio': 40, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [3, 8], 200, 45, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 0, 'width': 1500, 'gutter': 50, 'ratio': 40, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [3, 8], 0, 45, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [0, 0], 'scroll': 200, 'width': 1500, 'gutter': 50, 'ratio': 40, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [0, 0], 200, 45, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 200, 'width': 2505, 'gutter': 50, 'ratio': 40, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [3, 8], 200, 45, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 200, 'width': 1500, 'gutter': 50, 'ratio': 40, 'buffer_revision': 35, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [3, 8], 200, 35, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 200, 'width': 1500, 'gutter': 50, 'ratio': 40, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 5}, ['w', 'd', [3, 8], 200, 45, 6])]}
for i, (inputs, expected) in enumerate(fixtures[N]):
    check("workspace regression "+str(i), solve(inputs), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
workspace regression 0['w', 'w', [3, 8], 40, 9, 3]['w', 'd', [3, 8], 40, 9, 3]Failed
workspace regression 1['w', 'w', [3, 8], 40, 9, 3]['w', 'd', [3, 8], 40, 9, 3]Failed
workspace regression 2['w', 'w', [3, 8], 40, 9, 3]['w', 'd', [3, 8], 40, 9, 3]Failed
workspace regression 3['w', 'w', [3, 8], 0, 9, 3]['w', 'd', [3, 8], 0, 9, 3]Failed
workspace regression 4['w', 'w', [0, 0], 40, 9, 3]['w', 'd', [0, 0], 40, 9, 3]Failed
workspace regression 5['w', 'w', [3, 8], 40, 9, 3]['w', 'd', [3, 8], 40, 9, 3]Failed
workspace regression 6['w', 'w', [3, 8], 40, 7, 3]['w', 'd', [3, 8], 40, 7, 3]Failed
workspace regression 7['w', 'w', [3, 8], 40, 9, 2]['w', 'd', [3, 8], 40, 9, 2]Failed

SHA-256 / 636c477f94b84499c82b7ca3703bd28e05bf16b34b9abac1f656f1b607d24a82

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(x):
    r0 = x['new_view']
    r1 = x['view']
    r2 = x['caret']
    r3 = x['scroll']
    r4 = x['buffer_revision']
    r5 = x['view_refs']+1
    return [r0,r1,r2,r3,r4,r5]
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = {1: [({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 40, 'width': 300, 'gutter': 10, 'ratio': 40, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [3, 8], 40, 9, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 40, 'width': 300, 'gutter': 10, 'ratio': 60, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [3, 8], 40, 9, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 40, 'width': 300, 'gutter': 20, 'ratio': 40, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [3, 8], 40, 9, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 0, 'width': 300, 'gutter': 10, 'ratio': 40, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [3, 8], 0, 9, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [0, 0], 'scroll': 40, 'width': 300, 'gutter': 10, 'ratio': 40, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [0, 0], 40, 9, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 40, 'width': 501, 'gutter': 10, 'ratio': 40, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [3, 8], 40, 9, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 40, 'width': 300, 'gutter': 10, 'ratio': 40, 'buffer_revision': 7, 'disk_revision': 7, 'view_refs': 2}, ['w', 'd', [3, 8], 40, 7, 3]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 40, 'width': 300, 'gutter': 10, 'ratio': 40, 'buffer_revision': 9, 'disk_revision': 7, 'view_refs': 1}, ['w', 'd', [3, 8], 40, 9, 2])], 2: [({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 80, 'width': 600, 'gutter': 20, 'ratio': 40, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [3, 8], 80, 18, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 80, 'width': 600, 'gutter': 20, 'ratio': 60, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [3, 8], 80, 18, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 80, 'width': 600, 'gutter': 40, 'ratio': 40, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [3, 8], 80, 18, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 0, 'width': 600, 'gutter': 20, 'ratio': 40, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [3, 8], 0, 18, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [0, 0], 'scroll': 80, 'width': 600, 'gutter': 20, 'ratio': 40, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [0, 0], 80, 18, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 80, 'width': 1002, 'gutter': 20, 'ratio': 40, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [3, 8], 80, 18, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 80, 'width': 600, 'gutter': 20, 'ratio': 40, 'buffer_revision': 14, 'disk_revision': 14, 'view_refs': 4}, ['w', 'd', [3, 8], 80, 14, 5]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 80, 'width': 600, 'gutter': 20, 'ratio': 40, 'buffer_revision': 18, 'disk_revision': 14, 'view_refs': 2}, ['w', 'd', [3, 8], 80, 18, 3])], 3: [({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 120, 'width': 900, 'gutter': 30, 'ratio': 40, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [3, 8], 120, 27, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 120, 'width': 900, 'gutter': 30, 'ratio': 60, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [3, 8], 120, 27, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 120, 'width': 900, 'gutter': 60, 'ratio': 40, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [3, 8], 120, 27, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 0, 'width': 900, 'gutter': 30, 'ratio': 40, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [3, 8], 0, 27, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [0, 0], 'scroll': 120, 'width': 900, 'gutter': 30, 'ratio': 40, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [0, 0], 120, 27, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 120, 'width': 1503, 'gutter': 30, 'ratio': 40, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [3, 8], 120, 27, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 120, 'width': 900, 'gutter': 30, 'ratio': 40, 'buffer_revision': 21, 'disk_revision': 21, 'view_refs': 6}, ['w', 'd', [3, 8], 120, 21, 7]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 120, 'width': 900, 'gutter': 30, 'ratio': 40, 'buffer_revision': 27, 'disk_revision': 21, 'view_refs': 3}, ['w', 'd', [3, 8], 120, 27, 4])], 4: [({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 160, 'width': 1200, 'gutter': 40, 'ratio': 40, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [3, 8], 160, 36, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 160, 'width': 1200, 'gutter': 40, 'ratio': 60, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [3, 8], 160, 36, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 160, 'width': 1200, 'gutter': 80, 'ratio': 40, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [3, 8], 160, 36, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 0, 'width': 1200, 'gutter': 40, 'ratio': 40, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [3, 8], 0, 36, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [0, 0], 'scroll': 160, 'width': 1200, 'gutter': 40, 'ratio': 40, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [0, 0], 160, 36, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 160, 'width': 2004, 'gutter': 40, 'ratio': 40, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [3, 8], 160, 36, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 160, 'width': 1200, 'gutter': 40, 'ratio': 40, 'buffer_revision': 28, 'disk_revision': 28, 'view_refs': 8}, ['w', 'd', [3, 8], 160, 28, 9]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 160, 'width': 1200, 'gutter': 40, 'ratio': 40, 'buffer_revision': 36, 'disk_revision': 28, 'view_refs': 4}, ['w', 'd', [3, 8], 160, 36, 5])], 5: [({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 200, 'width': 1500, 'gutter': 50, 'ratio': 40, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [3, 8], 200, 45, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 200, 'width': 1500, 'gutter': 50, 'ratio': 60, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [3, 8], 200, 45, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 200, 'width': 1500, 'gutter': 100, 'ratio': 40, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [3, 8], 200, 45, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 0, 'width': 1500, 'gutter': 50, 'ratio': 40, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [3, 8], 0, 45, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [0, 0], 'scroll': 200, 'width': 1500, 'gutter': 50, 'ratio': 40, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [0, 0], 200, 45, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 200, 'width': 2505, 'gutter': 50, 'ratio': 40, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [3, 8], 200, 45, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 200, 'width': 1500, 'gutter': 50, 'ratio': 40, 'buffer_revision': 35, 'disk_revision': 35, 'view_refs': 10}, ['w', 'd', [3, 8], 200, 35, 11]), ({'view': 'v', 'doc': 'd', 'new_view': 'w', 'caret': [3, 8], 'scroll': 200, 'width': 1500, 'gutter': 50, 'ratio': 40, 'buffer_revision': 45, 'disk_revision': 35, 'view_refs': 5}, ['w', 'd', [3, 8], 200, 45, 6])]}
for i, (inputs, expected) in enumerate(fixtures[N]):
    check("workspace regression "+str(i), solve(inputs), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
workspace regression 0['w', 'v', [3, 8], 40, 9, 3]['w', 'd', [3, 8], 40, 9, 3]Failed
workspace regression 1['w', 'v', [3, 8], 40, 9, 3]['w', 'd', [3, 8], 40, 9, 3]Failed
workspace regression 2['w', 'v', [3, 8], 40, 9, 3]['w', 'd', [3, 8], 40, 9, 3]Failed
workspace regression 3['w', 'v', [3, 8], 0, 9, 3]['w', 'd', [3, 8], 0, 9, 3]Failed
workspace regression 4['w', 'v', [0, 0], 40, 9, 3]['w', 'd', [0, 0], 40, 9, 3]Failed
workspace regression 5['w', 'v', [3, 8], 40, 9, 3]['w', 'd', [3, 8], 40, 9, 3]Failed
workspace regression 6['w', 'v', [3, 8], 40, 7, 3]['w', 'd', [3, 8], 40, 7, 3]Failed
workspace regression 7['w', 'v', [3, 8], 40, 9, 2]['w', 'd', [3, 8], 40, 9, 2]Failed

SHA-256 / 014c4e9a9c95908bba5241e069af6aa4acdcd94d20f9c288f5ccb3b733bb0ba4

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The verified repair and its recorded checks are member-only.

This mechanism has 8 recorded checks per implementation. The open-access tier publishes the failure and the unsuccessful fix; the repaired source that passes every check, and the observations that prove it, are available to members.

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Verification & scope

Finite stipulated workspace snapshots only. Independent result fields describe observable obligations, not a full UI runtime. 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.

Observations recorded using Python 3.12.14 at 2026-09-29T14:42:41.812905+00:00.

Case digest / 2f95334b46078458f56841530e3dd055641f46063af4fd27bb3e6b6946435bdb