chomp in not related to reading in any mode. It just gets a string and changes it. readline might translate the line ending depending on the :crlf IO-layer.
$ perl -we '$/ = "\n"; @s = ("1\r\n", "2\n\r", "3\n", "4\r"); chomp @s +; print @s' | xxd 0000000: 310d 320a 0d33 340d 1.2..34.
($q=q:Sq=~/;[c](.)(.)/;chr(-||-|5+lengthSq)`"S|oS2"`map{chr |+ord }map{substrSq`S_+|`|}3E|-|`7**2-3:)=~y+S|`+$1,++print+eval$q,q,a,
In reply to Re^5: Regular expressions across multiple lines
by choroba
in thread Regular expressions across multiple lines
by abcd
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