Just another set of examples to drive home the point that, whatever else may happen (i.e., with the newlines), the  * (asterisk) is always gone: 

c:\@Work\Perl\monks>perl -wMstrict -le
"my $s = qq{AAA*\n};
 ;;
 my $t = $s;
 print qq{A1: '$t'};
 $t =~ s/\*$//;
 print qq{A2: '$t'};
 ;;
 $t = $s;
 print qq{B1: '$t'};
 $t =~ s/\*\s$//;
 print qq{B2: '$t'};
 ;;
 $t = $s;
 print qq{C1: '$t'};
 $t =~ s/\*[\n]$//;
 print qq{C2: '$t'};
"
A1: 'AAA*
'
A2: 'AAA
'
B1: 'AAA*
'
B2: 'AAA'
C1: 'AAA*
'
C2: 'AAA'

[download]
Note that:  \n is a member of the  \s (whitespace) set;  [\n] is the same as  \n (newline) alone. Please see perlre, perlretut, and perlrequick.

Update:

Does perl let you print $line as a literal string with \n etc.?
Some questions can be answered by simple experimentation. What happens when you print the strings "foobar", "foo\nbar", "foo\n\n\nbar", "foobar\n", "foobar\n\n\n", etc?

Give a man a fish:  <%-{-{-{-<

In reply to Re: Removing trailing asterisk from lines with regex by AnomalousMonk
in thread Removing trailing asterisk from lines with regex by Tmms

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.