Another ugly approach based on 1003509 (Update: also at https://stackoverflow.com/questions/2422204/how-can-i-interpolate-the-result-of-a-function-in-a-perl-here-doc): 
use strict;
use warnings;

sub MakeLine {
                return "Blah Blah param=$_[0]";
   };

print << "HEREDOC";
First line of heredoc
@{[ MakeLine(3) ]}
@{[ MakeLine(543) ]}
@{[ MakeLine("Some text also") ]}
Last line of heredoc
HEREDOC

[download]
Prints: 
First line of heredoc
Blah Blah param=3
Blah Blah param=543
Blah Blah param=Some text also
Last line of heredoc

[download]

                All power corrupts, but we need electricity.

In reply to Re: hiccoughing here documents by NetWallah
in thread hiccoughing here documents by Anonymous Monk

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