If you could show some more sample input and especially the expected output (Update: root node has been edited to include that), that would be helpful, for example I'm not sure if you want "Warning bad news here" to appear in the output.

Based on what you've provided, here's one way, using a negative lookahead to prevent the "keywords" from being interpreted as continuations.

use strict;
use warnings;
use Data::Dumper;

local $/ = "\n\n\n";
while (<DATA>) {
    next unless m/Dumpdata example/;
    my %row = m/ ^ \s* (\w+:)
        \s+ ( (?: (?!^\s*\w+:) . )+ ) /xmsg;
    print Dumper(\%row);
}

__DATA__

Dumpdata example
-----------------

Warning bad news here 
    Detail:              Some really nice infos these are 
    Info:              This is a problem
                       but there is a solution

[download]

Output:

$VAR1 = {
          'Detail:' => 'Some really nice infos these are 
',
          'Info:' => 'This is a problem
                       but there is a solution

'
        };

[download]

In reply to Re: Joining multiple lines together while parsing by haukex
in thread Joining multiple lines together while parsing by Arengin

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.