earendil-works/pi · error · Error

No changes made to . The replacements produced identical…

Error message

No changes made to ${path}. The replacements produced identical content.

What it means

Multi-edit no-op error at the end of applyEditsToNormalizedContent: after applying the full edits array, the composed newContent equals the original content. The plural 'replacements' variant signals the batch as a whole produced no net change; the file is left unmodified and the caller is warned the edit set may be copying existing text or targeting text that was never there.

Solutions

  1. The replacements are identical to the originals; change the new text so it differs.
Defensive patterns

Strategy: validation

When it happens

Trigger: Thrown at packages/agent/src/harness/tools/edit-diff.ts:359 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of earendil-works/pi@4af9d21d3b (2026-08-24). Data as JSON: /api/errors/f7c806f416326420. Report an issue: GitHub.

Appendix: source

Thrown at packages/agent/src/harness/tools/edit-diff.ts:359

	matchedEdits.sort((a, b) => a.matchIndex - b.matchIndex);
	for (let i = 1; i < matchedEdits.length; i++) {
		const previous = matchedEdits[i - 1];
		const current = matchedEdits[i];
		if (previous.matchIndex + previous.matchLength > current.matchIndex) {
			throw new Error(
				`edits[${previous.editIndex}] and edits[${current.editIndex}] overlap in ${path}. Merge them into one edit or target disjoint regions.`,
			);
		}
	}

	const baseContent = normalizedContent;
	const newContent = usedFuzzyMatch
		? applyReplacementsPreservingUnchangedLines(normalizedContent, replacementBaseContent, matchedEdits)
		: applyReplacements(replacementBaseContent, matchedEdits);

	if (baseContent === newContent) {
		throw getNoChangeError(path, normalizedEdits.length);
	}

	return { baseContent, newContent };
}

/** Generate a standard unified patch. */
export function generateUnifiedPatch(path: string, oldContent: string, newContent: string, contextLines = 4): string {
	return Diff.createTwoFilesPatch(path, path, oldContent, newContent, undefined, undefined, {
		context: contextLines,
		headerOptions: Diff.FILE_HEADERS_ONLY,
	});
}

/**
 * Generate a display-oriented diff string with line numbers and context.
 * Returns both the diff string and the first changed line number (in the new file).
 */
export function generateDiffString(

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