Horizontal lines between function headers

[Dmitri Minaev <Dmitri.Minaev@sgs.com>]

After switching to a new version of Emacs (bundled in Debian Sarge), the
first thing I noticed was that in some modes (e.g., Lisp and C++) a
solid horizontal line appears before some function definitions. It does
not precede _all_ definitions, so my first impression was that it was a
bug in the screen redrawing. The usefulness of this feature, however,
has convinced me that it was, probably, a feature :). If only it worked
with all functions!

I tried grepping through the .el files, but failed. Where is this
feature defined?

Thanks.

-- 
Dmitri Minaev

 
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