One-liner to find all occurrences of property names within a stream of text

One-liner to find all occurrences of property names within a stream of text:
cat * | perl -ne 'while ( /\G.*?([-a-z\.]+\.enabled)/gi ) { print "$1=x\n"; }' | sort -u > /tmp/enabled
This posting is mostly to remind me that 1) print "..." while /.../ does not work and 2) to use \G to anchor the regular expression to the first and/or last match.

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