but it works now using /*/s.

Again a Quantifier follows nothing in regex; marked by <-- HERE in m/* <-- HERE / - did you read the answers above?

perl -le'print map{pack c,($-++?1:13)+ord}split//,ESEL'

In reply to Re^2: search a string in a non-regular file by shmem
in thread search a string in a non-regular file by ytjPerl

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