src/vs/workbench/browser/parts/editor/editorStatus.ts/EditorStatus/getSelectionLabel
class EditorStatus:	private getSelectionLabel(info: IEditorSelectionStatus): string | undefined {
		if (!info || !info.selections) {
			return undefined;
		}

		if (info.selections.length === 1) {
			if (info.charactersSelected) {
				return format(nlsSingleSelectionRange, info.selections[0].positionLineNumber, info.selections[0].positionColumn, info.charactersSelected);
			}

			return format(nlsSingleSelection, info.selections[0].positionLineNumber, info.selections[0].positionColumn);
		}

		if (info.charactersSelected) {
			return format(nlsMultiSelectionRange, info.selections.length, info.charactersSelected);
		}

		if (info.selections.length > 0) {
			return format(nlsMultiSelection, info.selections.length);
		}

		return undefined;
	}