I've used this with heredocs in CGI scripts. Example: 
#!/usr/bin/perl

sub top_html {
    return "<html><head>$_[0]</head><body>";
}

print <<EOF;
@{[top_html("catchy title")]}
blah..
EOF

[download]

Explanation:
@{ somearef } takes an array reference "somearef" and dereferences it.
[ somearray ] takes a list "somelist" and makes an array ref of it.
@{ [ function() ] } takes the list returned by "function()" and wraps it in a way that is interpolatable by quotemarks.

In reply to Re: call sub in string by kwoff
in thread call sub in string by Anonymous Monk

Title:
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