in reply to Golf: Fix de facto HTML comments

Here's what I got (63, but much clearer than blokhead's, at least to me): 
substr($_,$-[1],$+[1]-$-[1])=~s/--/-\xad/g while/<!--(.*?)-->/g

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Update: Sigh; I see I fell prey to the same trap blokhead did. I'll see if I can fix it.

In Section Meditations