you are right abigail-II: in my little following test sript, using input from textearea, the regex definetly works correctly as above. don't know what damm happens in my cms, have to look deeper in it's lines. 
#!/usr/bin/perl -w

use strict;
use CGI;
my $query = new CGI;
my $text        =       cleanup_txt( $query->param( 'text' ));

if ( $text eq "") {
        cast_form();
} else {
        print "Content-type:text/html\n\n";
        print ubb_txt( $text);
}



sub cleanup_txt {
        my $str = $_[0];

        return "" unless ( defined $str );
        $str =~ s/[<>"'&|]//gs;
        return $str;
}
sub cast_form {
        print "Content-type:text/html\n\n";
        print "<html><head><title>test textearea</title></head>";
        print "<body>\n<form method=post action=\cgi-bin/";
        print "/red/test.pl\"><textarea rows=\"5\" cols=\"55\" name=";
        print "\"text\"></textarea><br><input type=\"submit\"";
        print " value='Submit' name=submit\" value='Submit' name=";
        print "\"submit\"></form></body></html>";
}

sub ubb_txt {
        my $txt = shift;

        return "" unless ( defined $txt);
        my ($nl) = $txt =~ m{(\cM?\cJ)};
        $txt =~ s{$nl$nl}{</p><p>}gs if (defined $nl);
        $txt =~ s{$nl}{<br>}gs if (defined $nl);
        return $txt;

}

[download]

In reply to Re: Re: catching newlines from textarea input by maksl
in thread catching newlines from textarea input by maksl

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.