From: Dan Eble <nine.fierce.ballads@gmail.com>
Date: Thu, 28 May 2015 01:23:45 +0000 (-0400)
Subject: Issue 4423: eliminate part combiner's array of context handles (4/4)
X-Git-Tag: release/2.19.22-1~68^2
X-Git-Url: https://git.donarmstrong.com/?a=commitdiff_plain;h=615571eda2393eba537c3ad0eb2d424f8dd218b0;hp=615571eda2393eba537c3ad0eb2d424f8dd218b0;p=lilypond.git

Issue 4423: eliminate part combiner's array of context handles (4/4)

The Part_combine_iterator no longer creates or keeps alive the Voice
contexts that it uses.  make-directed-part-combine-music does it.

When the Part_combine_iterator needs to redirect a child iterator, it
finds the new Voice by name among the siblings of the current Voice.
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