Caveat: Please do not offer split as my solution, this is geared more as a regular expression issue...

Let's use CSV as an example.. 

my $foo = "foo,bar,moo,cow";
$foo =~ /(?:([^,]+),)+/;

[download]

The above will only set $1 to "moo".. $2,$3,$4 are all null, $' is "cow", and $& is "foo,bar,moo"

I thought maybe the @- or @+ arrays might contain all of the matches, but to no avail...

What is strange is.. 

my $mystr = "foo,bar,moo,cow";
my @values = $mystr =~ m/(\w+)\,?/g;

[download]

@values will have all the matches I wanted.. But again, $1 will be set, and $2, $3, $4 will all be null.. Are capturing parentheses locked to $1 if matched multiple times? Is there any way around this? (without using split?)

Advance <- Thanks

In reply to More Variable length regex issues by dextius

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.