Generally, (at least in theory, under Perl 5.6, &c.) "\n" means "whatever makes a new line," and not necessarily "an ASCII LF character." "\n" could very well translate to \012 (Unix -- ASCII's "linefeed" char), \015 (MacOS < 10 -- ASCII's "carriage return" char), or \015\012 (MS-DOS/Windows -- CRLF)...

Of course, this relies on a lot of magic, like binmode disciplines, all working as they should, so it's quite possible that some "\r\n" sequences could slip in despite it all... :-) The joys of relying on the cutting edge. 

#!/Applications/Utilities/perl -T
use strict;
use warnings;
use utf8;
no bytes;
require v5.6.5;

[download]

In reply to Ria: Substitution by baku
in thread replacing one or more newlines with commas by Kiko

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post, it's "PerlMonks-approved HTML":


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.