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    atching REx `^s(?:al|pre)?ad$' against `sad'
  Setting an EVAL scope, savestack=6
...
   5 <salad> <>           | 17:          EOL
   5 <salad> <>           | 18:          END
Match successful!
  2. or download this
    Matching REx `^s(?:(?:al)?|pre)ad$' against `sad'
  Setting an EVAL scope, savestack=6
...
Match successful!

Freeing REx: `"^s(?:(?:al)?|pre)ad$"'