src/vs/editor/browser/viewParts/currentLineHighlight/currentLineHighlight.ts/AbstractLineHighlightOverlay/_shouldRenderInContent
class AbstractLineHighlightOverlay:	protected _shouldRenderInContent(): boolean {
		return (
			(this._renderLineHighlight === 'line' || this._renderLineHighlight === 'all')
			&& this._selectionIsEmpty
			&& (!this._renderLineHighlightOnlyWhenFocus || this._focused)
		);
	}