Entering embedded `(.)\1*'
  Setting an EVAL scope, savestack=31
   0 <> <xx556xx>         |  1:    OPEN1
   0 <> <xx556xx>         |  3:    REG_ANY
   1 <x> <x556xx>         |  4:    CLOSE1
   1 <x> <x556xx>         |  6:    CURLYX[1] {0,32767}
   1 <x> <x556xx>         | 10:      WHILEM[1/1]
                                0 out of 0..32767  cc=140fafc
  Setting an EVAL scope, savestack=37
   1 <x> <x556xx>         |  8:        REF1
   2 <xx> <556xx>         | 10:        WHILEM[1/1]
                                  1 out of 0..32767  cc=140fafc
  Setting an EVAL scope, savestack=43
   2 <xx> <556xx>         |  8:          REF1
                                    failed...
                                  failed, try continuation...
   2 <xx> <556xx>         | 11:          NOTHING
   2 <xx> <556xx>         | 12:          END
  Setting an EVAL scope, savestack=47
     restoring \1 to -1(0)..1(no)
     restoring \1..\1 to undef