_-( inside a character class ([ between square brackets ]) mean "any character between _ and (". It might have included a lot of characters you didn't want, but actually in this case, if you look at an ASCII table, you'll see that ( actually comes before _, so this is not a valid range.

It will also easier for us to help you if you show us some sample input data.

In reply to Re: regex question Underscores, lines and paratheses. by Eily
in thread regex question Underscores, lines and paratheses. by sbrothy

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