How about munging the resulting datastructure instead of trying to massage the incoming data? (note: this works for the data you gave, but not necessarily for all data you will have to deal with - milleage will vary) 
use strict;
use warnings;
use Data::Dumper;
use Config::General;

my %config = ParseConfig(\*DATA);

for (keys %{$config{template}}) {
   if (/^http/) {
      $config{template}{home_url} = $_;
      delete $config{template}{$_};
      last;
   }
}

print Dumper \%config;
__DATA__
<template>
  foo                = Yes
  bar                = 0
  blort              = 
  home_url           =
http://www.foo.com/some/really/long/url 
</template>

[download]

jeffa

L-LL-L--L-LL-L--L-LL-L--
-R--R-RR-R--R-RR-R--R-RR
B--B--B--B--B--B--B--B--
H---H---H---H---H---H---
(the triplet paradiddle with high-hat)

In reply to Re: Unwrapping values in a template by jeffa
in thread Unwrapping values in a template by hacker

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.