Running your code with perl 5.20.2 Tk 804.032 on linux (debian 8) produces: 

foobar
expecting this message
foo

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

In reply to Re: search and replace regex return value by shmem
in thread search and replace regex return value by milma

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