If you don't have to worry about old Macs, you don't have to worry about running on old Macs, so you can get away with 
s/\r?\n/\n/g

[download]
or just 
s/\r(?=\n)//g

[download]

In reply to Re^2: Detect line endings with CGI.pm upload by ikegami
in thread Detect line endings with CGI.pm upload by apu

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