Re: Sketch for broken beams with consistent slopes (issue 4961041)

[n . puttock]

http://codereview.appspot.com/4961041/diff/60001/Documentation/changes.tely
File Documentation/changes.tely (right):

http://codereview.appspot.com/4961041/diff/60001/Documentation/changes.tely#newcode66
Documentation/changes.tely:66: \override Beam #'breakable = ##t
no indent

http://codereview.appspot.com/4961041/diff/60001/Documentation/changes.tely#newcode68
Documentation/changes.tely:68: a8 [ b c d e f g \bar "" \break f e d c b
a ]
a8[
a]

http://codereview.appspot.com/4961041/diff/60001/Documentation/changes.tely#newcode78
Documentation/changes.tely:78: the beam grob. All Scheme functions that
used these callbacks are now
two spaces after full stop/period

http://codereview.appspot.com/4961041/diff/60001/Documentation/changes.tely#newcode79
Documentation/changes.tely:79: simplified.  For examples, see
@file{input/regression/beam-concave.ly}
You shouldn't reference regression tests here.  Will frighten users. :)

http://codereview.appspot.com/4961041/diff/60001/input/regression/beam-consistent-broken-slope.ly
File input/regression/beam-consistent-broken-slope.ly (right):

http://codereview.appspot.com/4961041/diff/60001/input/regression/beam-consistent-broken-slope.ly#newcode2
input/regression/beam-consistent-broken-slope.ly:2: \version "2.15.12"
2.15.15

http://codereview.appspot.com/4961041/diff/60001/input/regression/beam-consistent-broken-slope.ly#newcode12
input/regression/beam-consistent-broken-slope.ly:12: \override Beam
#'breakable = ##t
indent, code style

http://codereview.appspot.com/4961041/diff/60001/input/regression/beam-consistent-broken-slope.ly#newcode13
input/regression/beam-consistent-broken-slope.ly:13: a8 [ b c d e f g
\bar "" \break f e d c b a ]
a8[
a]

etc.

http://codereview.appspot.com/4961041/diff/60001/scm/define-grob-properties.scm
File scm/define-grob-properties.scm (right):

http://codereview.appspot.com/4961041/diff/60001/scm/define-grob-properties.scm#newcode749
scm/define-grob-properties.scm:749: (skip-quanting ,boolean? "Should
beam quanting be skipped?")
Is this likely to be used outside regression testing?

http://codereview.appspot.com/4961041/diff/60001/scm/define-grobs.scm
File scm/define-grobs.scm (right):

http://codereview.appspot.com/4961041/diff/60001/scm/define-grobs.scm#newcode386
scm/define-grobs.scm:386: (positions .  ,ly:beam::quanting)
remove extra space

http://codereview.appspot.com/4961041/diff/60001/scm/layout-beam.scm
File scm/layout-beam.scm (right):

http://codereview.appspot.com/4961041/diff/60001/scm/layout-beam.scm#newcode65
scm/layout-beam.scm:65: grob
indent

http://codereview.appspot.com/4961041/diff/60001/scm/layout-beam.scm#newcode72
scm/layout-beam.scm:72: grob
indent

http://codereview.appspot.com/4961041/