The quantifier actually makes it match every group; however, it only stores the last match in $1, and thus that's what you see in your return. See Extracting matches in perlretut.

If you want to extract an arbitrary number of digits sandwiched between decimal points, you can grab them all, and then split the result. 

/((?:\d+\.)+)/g;
split /(?<=\.)/, $1;

[download]
Alternatively,
[i]n list context, //g returns a list of matched groupings, or if there are no groupings, a list of matches to the whole regexp
(see Global matching in perlretut) so you could try 
my @res = /(?<=\.)\d+\./g;

[download]

#11929 First ask yourself `How would I do this without a computer?' Then have the computer do it the same way.

In reply to Re^3: RegEx Headaches by kennethk
in thread RegEx Headaches by oryx3

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.