* <p>would return {@code Stream.of("0:a", "1:b", "2:c")}.
   *
   * <p>The resulting stream is <a
   * href="http://gee.cs.oswego.edu/dl/html/StreamParallelGuidance.html">efficiently splittable</a>
   * if and only if {@code stream} was efficiently splittable and its underlying spliterator
   * reported {@link Spliterator#SUBSIZED}. This is generally the case if the underlying stream

//
// This must be deeply nosplit because it is called from a function
// prologue before the stack is set up and because the compiler will
// call it from any splittable prologue (leading to infinite
// recursion).
//
// Ideally it should also use very little stack because the linker
// doesn't currently account for this in nosplit stack depth checking.
//

- Functions that may run without a valid G. For example, functions
  that run in early runtime start-up, or that may be entered from C
  code such as cgo callbacks or the signal handler.

Splittable functions ensure there's some amount of space on the stack
for nosplit functions to run in and the linker checks that any static
chain of nosplit function calls cannot exceed this bound.

			return err
		}
		defer f.Close()
		_, err = io.Copy(tw, f)
		return err
	})
}

// splitUSTARPath splits a path according to USTAR prefix and suffix rules.
// If the path is not splittable, then it will return ("", "", false).
func splitUSTARPath(name string) (prefix, suffix string, ok bool) {
	length := len(name)
	if length <= nameSize || !isASCII(name) {
		return "", "", false