Matthias

phone-number: remove punctuation or treat as error?

3

The [instructions](https://github.com/exercism/problem-specifications/blob/ee62cc9d562d3b9895f7cf2e817d32a4d56ba29c/exercises/phone-number/description.md?plain=1#L17) say that the "*task is to clean up differently formatted telephone numbers by removing punctuation [...]*". But the test [invalid with punctuations](https://github.com/exercism/problem-specifications/blob/ee62cc9d562d3b9895f7cf2e817d32a4d56ba29c/exercises/phone-number/canonical-data.json#L124-L138) (and its [predecessor](https://github.com/exercism/problem-specifications/blob/ee62cc9d562d3b9895f7cf2e817d32a4d56ba29c/exercises/phone-number/canonical-data.json)) seem to imply...