Compiling REx `b[ae]t'
size 16 Got 132 bytes for offset annotations.
first at 1
   1: EXACT <b>(3)
   3: ANYOF[ae](14)
  14: EXACT <t>(16)
  16: END(0)
anchored "b" at 0 (checking anchored) minlen 3
Offsets: [16]
        1[1] 0[0] 2[4] 0[0] 0[0] 0[0] 0[0] 0[0] 0[0] 0[0] 0[0] 0[0] 0[0] 6[1] 0[0] 7[0]
Guessing start of match, REx "b[ae]t" against "bet"...
Found anchored substr "b" at offset 0...
Guessed: match at offset 0
Matching REx "b[ae]t" against "bet"
  Setting an EVAL scope, savestack=9
   0 <> <bet>             |  1:  EXACT <b>
   1 <b> <et>             |  3:  ANYOF[ae]
   2 <be> <t>             | 14:  EXACT <t>
   3 <bet> <>             | 16:  END
Match successful!
Freeing REx: `"b(?:a|e)t"'
Freeing REx: `"b[ae]t"'