You are using a string literal rather than a regular expression literal, so the \ gets removed by the double-quoted string handling code before it gets passed to the regex compiler. Use a regex literal instead: 
$ perl -wle 'print join ",", split /\|/, "abc|def"'
abc,def
$

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Dave.

In reply to Re: Surprised by split by dave_the_m
in thread Surprised by split by GrandFather

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