code: func MustCompileGlob(pat string) Glob {
  	g, err := CompileGlob(pat)
  	if err != nil {
  		panic(err)
  	}
  	return g
  }
docs: // MustCompileGlob is like CompileGlob, but it panics if an error occurs,
  // simplifying safe initialization of global variables holding glob patterns.