Please don't recommend something like that without mentioning that the /ee modifier calls eval and thus opens the door for execution of arbitrary code.

A safe alternative might be String::Interpolate, but it might require a bit more work.

Update: if it's not obvious what the unsafe part is, look at this: 

my $x = 'abc';

my $evil = '"; print "evil stuff here\n"; "';
$x =~s/a(bc)/qq{"$evil"}/ee;

[download]

Instead of the print... arbitrary perl code can be executed.

In reply to Re^2: Slurping search-replace patterns from a file by moritz
in thread RESOLVED: Slurping search-replace patterns from a file by HKS

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