Compiling REx `b(?:a|e)t'
size 12 Got 100 bytes for offset annotations.
first at 1
   1: EXACT <b>(3)
   3: BRANCH(6)
   4:   EXACT <a>(10)
   6: BRANCH(9)
   7:   EXACT <e>(10)
   9: TAIL(10)
  10: EXACT <t>(12)
  12: END(0)
anchored "b" at 0 (checking anchored) minlen 3
Offsets: [12]
        1[1] 0[0] 4[1] 5[1] 0[0] 6[1] 7[1] 0[0] 7[0] 9[1] 0[0] 10[0]
Guessing start of match, REx "b(?:a|e)t" against "bet"...
Found anchored substr "b" at offset 0...
Guessed: match at offset 0
Matching REx "b(?:a|e)t" against "bet"
  Setting an EVAL scope, savestack=7
   0 <> <bet>             |  1:  EXACT <b>
   1 <b> <et>             |  3:  BRANCH
  Setting an EVAL scope, savestack=13
   1 <b> <et>             |  4:    EXACT <a>
                              failed...
   1 <b> <et>             |  7:    EXACT <e>
   2 <be> <t>             | 10:    EXACT <t>
   3 <bet> <>             | 12:    END
Match successful!