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Home/ Questions/Q 373483
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Editorial Team
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Editorial Team
Asked: May 12, 20262026-05-12T14:18:45+00:00 2026-05-12T14:18:45+00:00

I want to match a string that includes the characters 0-9.-,[], something like this:

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I want to match a string that includes the characters 0-9.-,[], something like this:

return true if str =~ /\A[0-9.-,\[\]]*\Z/

Which works except it doesn’t seem to match the braces, how do I match those?

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  1. Editorial Team
    Editorial Team
    2026-05-12T14:18:45+00:00Added an answer on May 12, 2026 at 2:18 pm

    You need to escape the . and - characters:

    str =~ /\A[0-9\.\-,\[\]]*\Z/
    
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