http://www.perlmonks.org?node_id=344042


in reply to replacing "dynamic" variables

Update2: Also, you might want to look into one of the various Config or templating modules (such as Template-Toolkit), as it sounds like you might be trying to roll your own basic templating system. 

$line =~ s[
  \$            # Dollar sign (literal)
  {             # Open brace (literal)
    (           # capture (into $1)
      [^}]+     #   One or more non-close brace characters
    )           # end capture
  }             # Close brace (literal)
][$dynamic_variables{$1}]xg;

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Update: Expanded regexp with /x

bbfu
Black flowers blossom
Fearless on my breath

In Section Seekers of Perl Wisdom