"\1" means the first opened parenthesis. You need to use "\2".
$ perl -e '$_="aaabbccccddeee"; print $1,$/ while /((.)\2*)/g'
# ^^
# ||
# |+--- \2
# |
# \1
aaa
bb
cccc
dd
eee
Or, if you want an array as a result,
push @array, $1 while /((.)\2*)/g;
Update
Notice that you can't just assign the outcome of the regex to an array, because you'd get redundant results (both $1 and $2 for each match).
# THIS IS WRONG
@array = $_ =~ /((.)\2*)/g;
print join ", " , map {"<$_>"} @array;
__END__
<aaa>, <a>, <bb>, <b>, <cccc>, <c>, <dd>, <d>, <eee>, <e>
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.