From: David Kastrup <dak@gnu.org>
Date: Thu, 4 Sep 2014 09:18:06 +0000 (+0200)
Subject: Issue 4028: Automatic beaming of grace notes inhibits beam subdivision
X-Git-Tag: release/2.19.14-1~21
X-Git-Url: https://git.donarmstrong.com/?a=commitdiff_plain;h=fe86bcbd3c74223925c99e06cd830cd752c7746e;p=lilypond.git

Issue 4028: Automatic beaming of grace notes inhibits beam subdivision

While the whole extend_mom_ logic seems rather fishy to me (it probably
should be reset to a sane value at some other location per-beam) and
I don't have an actual idea why the Grace_auto_beam_engraver would
be involved at all here, initializing extend_mom_ to a value before
all grace notes seems to do the trick for this report.
---

diff --git a/lily/auto-beam-engraver.cc b/lily/auto-beam-engraver.cc
index c48fe6fe33..d9a3dd8ff6 100644
--- a/lily/auto-beam-engraver.cc
+++ b/lily/auto-beam-engraver.cc
@@ -153,6 +153,7 @@ Auto_beam_engraver::Auto_beam_engraver ()
   process_acknowledged_count_ = 0;
   stems_ = 0;
   shortest_mom_ = Moment (Rational (1, 4));
+  extend_mom_ = Moment (-1);
   finished_beam_ = 0;
   finished_grouping_ = 0;
   grouping_ = 0;