in reply to
Re: Divided we fall (was Re^4: Capturing parenthesis and grouping square brackets)
in thread Capturing parenthesis and grouping square brackets
My guess is that it’s a reference to Enlightenment, “a stacking window manager for the X Window System” of which E17 is the latest release:
Version 0.17, also referred to as E17, was in development for 12 years starting in December 2000 until 21 December 2012 when it was officially presented to the world as a stable release.
(Underlining added.) :-)