 }
 
 extension Substring: LosslessStringConvertible {
-  @inlinable
   public init(_ content: String) {
     self = content[...]
   }

}

extension Substring {
  @inlinable
  @available(swift, introduced: 4)
  public subscript(r: Range<Index>) -> Substring {
    return Substring(_slice[r])


// String/Substring Slicing
extension String {
  @available(swift, introduced: 4)
  public subscript(r: Range<Index>) -> Substring {
    _boundsCheck(r)
