Allow multiple digits in repetitions for regular expressions

haskell / alex

A lexical analyser generator for Haskell

https://hackage.haskell.org/package/alex

BSD 3-Clause "New" or "Revised" License

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Allow multiple digits in repetitions for regular expressions #141

Closed yav closed 4 years ago

yav commented 5 years ago

Currently Alex allows only a single digit in the number of repetitions for a regular expression. So $digit {9} is OK, but $digit {10} is a very confusing syntax error.