replace-range

name	replace-range
description	Editor primitive for replacing an exact contiguous line range with exact user-provided text. Use inside write-code-by-hand mode when the user asks to replace lines, swap this block, or change a selected range.

Replace Range

Replace an exact line range with exactly the text supplied by the user.

Operational framing: perform bounded block replacement. The bounds are the product.

Required Inputs

• Target file.
• Start line.
• End line.
• Exact replacement block.

If any input is missing, ask for it.

Rules

• Replace only the specified contiguous range.
• Preserve the provided replacement block exactly.
• Do not rewrite adjacent code.
• Do not synthesize missing pieces.
• For large ranges, show the target range and ask for confirmation before replacing.

Output

Confirm:

Replaced <path>:<start>-<end> with exactly <n> line(s).

Offer to show the changed range.