If I write a "\n" on my Windows machine, that means 2 characters: <CR><LF> (Carriage Return, Line Feed). So when you write "foo\r\n", on Windows that means <CR><CR><LF>. This extra <CR> means that the line doesn't end in "\n", <CR><LF> (Carriage Return, Line Feed). There is indeed something else between the "o" and the line ending and your regex doesn't match

I've seen you say something along these lines a couple times before, and I'm sorry, but it's flat out wrong.

C:\>perl -wMstrict -MDevel::Peek -e "my$x=qq{\n};Dump($x)"
SV = PV(0x32aa98) at 0x577ef8
  REFCNT = 1
  FLAGS = (POK,IsCOW,pPOK)
  PV = 0x556ba4 "\n"\0
  CUR = 1
  LEN = 10
  COW_REFCNT = 1

[download]

Note CUR = 1 - there is only one character in that string, not two. I dimly remember that there might have been some builds of Perl for Windows back in the 90's that may have tried to handle it differently, and I remember being confused by this early on as well, but for a long time now, on both Windows and *NIX, \n is LF, and that's what Perl uses internally. The difference is that on Windows the :crlf layer translates that on input and output, but it doesn't change the internal representation, how regexes work, or the default $/ - even on Windows, it's "\n", one byte, "\x0A".

I suggest you take the time to read Newlines in perlport and PerlIO.

I copied the text for "$" verbatim from the Perl regex docs.

Where in the Perl docs does it say $ matches before \r?

In reply to Re^7: How do I display only matches by haukex
in thread (SOLVED) How do I display only matches by tem2

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