I need to retrieve the substring between the parenthesis (exclude the parenthesis): I tried

Question

Asked: June 12, 20262026-06-12T05:31:47+00:00 2026-06-12T05:31:47+00:00

I need to retrieve the substring between the parenthesis (exclude the parenthesis):

I tried the following but it’s returning the the value between the parenthesis along with the parenthesis. I would like to exclude the parentheses.

 a= "testing (EMI:30384)"
 a[/\(.*?\)/]   ***returns (EMI:30384)

Thanks for a lot for your help

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Editorial Team · Answer 1 · 2026-06-12T05:31:48+00:00

Editorial Team

() capture between

\( and \) escape ()

\((.*)\)

will match EMI:30384

enter image description here

irb(main):005:0> a= "testing (EMI:30384)"
=> "testing (EMI:30384)"
irb(main):006:0> p a.match(/\((.*)\)/)[1]
"EMI:30384"

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