src/vs/editor/common/diff/standardLinesDiffComputer.ts/LineSequence/getBoundaryScore
class LineSequence:	getBoundaryScore(length: number): number {
		const indentationBefore = length === 0 ? 0 : getIndentation(this.lines[length - 1]);
		const indentationAfter = length === this.lines.length ? 0 : getIndentation(this.lines[length]);
		return 1000 - (indentationBefore + indentationAfter);
	}