Re: Beam slope

[Keith E OHara]

On Wed, 20 Oct 2010 18:08:51 -0700, Ralph wrote:

> I'm currently using version 2.12.3. I've noticed that sometimes Lilypond
> uses sloped beams, and sometimes uses level beams, in places that appear to
> be almost identical. Specifically, see the snippet in the Learning Manual,
> Section 1.1 Background => What symbols to engrave,

I think you are noticing that the beam is level when the inner notes have the 
shorter stems :
\relative c' {d16 g g g  g d d d }

This is on purpose, and you might enjoy looking at the regression tests called 
beam-concave*.ly.  These might be in your installation 
<install-directory>/source/input/regression/, otherwise at
lilypond.org/doc/v2.12/input/
regression/collated-files.html
(Line break in the link because it's too big a file to fetch accidentally)
-Keith