perl -CSD -Mutf8 -pe"s/’/'/g;"
-Cio has no effect in that example, which you can see by removing it.
$ echo It’s easy | perl -pe"s/’/'/g;"
It's easy
-Ci only has an effect if reading from a file
$ perl -Cio -pe"s/’/'/g;" <( echo "It’s easy" )
Wide character in print at -e line 1, <> line 1.
It’s easy
This is what you want if reading from a file:
$ perl -CiO -Mutf8 -pe"s/’/'/g;" <( echo "It’s easy" )
It's easy
This is what you want if reading from STDIN:
$ echo "It’s easy" | perl -CIO -Mutf8 -pe"s/’/'/g;"
It's easy
Combining both, you can use
perl -CiIO -Mutf8 -pe"s/’/'/g;"
Better:
perl -CSD -Mutf8 -pe"s/’/'/g;"
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