lf:       a b c CR LF d e f CR LF        <- want
cr:       a b c CR d e f CR
crlf:     a b c CR CR LF d e f CR CR LF
lf-bin:   a b c LF d e f LF
cr-bin:   a b c CR d e f CR
crlf-bin: a b c CR LF d e f CR LF        <- want