Just use a substitution regex: 
$str =~ s|'|\\'|g;

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In reply to Re: How do I convert ( ' ) into something Prolog's name/2 can handle, e.g. ( \' )? by MrNobo1024
in thread How do I convert ( ' ) into something Prolog's name/2 can handle, e.g. ( \' )? by eubios

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