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  1. #!/bin/bash
  2. rx='^\[(['"'"'"])[^'"'"'"]*\1]$';
  3. [[ $s =~ $rx ]] && echo "Matched!" || echo "No match!";
Success #stdin #stdout 0s 4508KB
comments (?)
stdin 
Standard input is empty
stdout 
No match!
https://ideone.com/grnMCl
language:
Bash (bash 5.0.3)
created:
7 years ago
visibility:
secret

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