FA-11828 / Document structure integrity / Member archive

Deleting text leaves a bookmark endpoint inside removed content · case 03

Deleting text leaves a bookmark endpoint inside removed content in the controlled document model.

Member previewVariant 3 · 3 implementations · 6 checks per implementation

Case contract

Given a valid bookmark [start,end] and deleted half-open text range [a,b], transform both endpoints: before stays, inside clamps to a, after shifts by b-a.

Why this case matters

Structured editing must preserve document semantics independently of visual rendering.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
document fixture 0	`[3, 7]`	`[3, 5]`	Failed

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