Edit, Write and NotebookEdit approvals withhold the diff when it cannot be reviewed / Claude Code v2.1.235

You'll notice

Useful4 Signal2

Permissions

Edit and Write approvals withhold unreviewable diffs and downgrade to one-time approval.

What

Instead of showing a truncated or empty diff, these permission prompts now display a message saying the change cannot be reviewed and that approval is therefore one-time only.

Details

Triggered when the old or new content exceeds the size cap or contains control characters, when the existing file is too large to preview, when the path is a network path, or when a notebook cell cannot be parsed or found.
The payload carries a contentWithheld marker and a "no changes" panel in place of the diff.
The Bash sed simulated-edit preview follows the same rule.
Message text: "Proposed edit is too large to show — cannot be reviewed, so approval is one-time only (deny unless expected)."
Not gated.

Evidence

Proposed edit is too large to show \u2014 cannot be reviewed, so approval is one-time only (deny unless expected).

Strings lifted out of the shipped bundle, so the claim above can be checked against them.