I wasn't even trying to obfuscate. It just seems senseless to break it out into multiple lines when it just works and minimizes vertical waste 
# convert trigraphs automagically
my $t;
s#\?\?([=(/)'<!>-])#($t=$1)&&($t=~tr/=(\/)'<!>-/\#[\\]^{|}~/)&&($t)#ge
+;

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In reply to some trigraph conversion code from my C parser by wojtyk

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