Updates:
Labels: -Fixed_2_17_0 -Regression
Comment #28 on issue 2745 by [email protected]: clef change confuses manual key
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http://code.google.com/p/lilypond/issues/detail?id=2745
Looks like an incomplete fix (addressing the original report but not being
entirely consistently) has been pushed and is contained in 2.17.0. A
followup fix has been posted, but the review has been clobbered by
discussions about Grenouille and the need to do _separate_ work. It also
appears that the latest patch trying to address additional inconsistencies
causes problems described in comment #25, so it is indeed "Needs_work",
though the current state is not likely a regression any more due to the
first, already pushed change. As a further complication, a complementing
change has already been pushed as issue 2768.