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  1. puts $tcl_version;
  2. set subject {aabbcddeffghh};
  3. regsub -all {(.)(?=.*\1)} $subject {} result;
  4. puts $result;
Runtime error #stdin #stdout 0.03s 5272KB
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Standard input is empty
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8.5
https://ideone.com/pFS0Q
language:
TCL (tcl 8.6)
created:
11 years ago
visibility:
secret

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