TorbjörnBjörkman <torbjo...@gmail.com> writes:
> I try to hide the first stem in a beam group and expect this to keep the
> beam, just as happens if you hide any other stem in the group. However, the
> whole beam goes away.
>
> I run lilypond version 2.18.2 on a Mac.
>
> Code snippet that demonstrates the issue follows. The first two beam groups
> show the expected behaviour and the last fails. This seems to be a bug.
>
> Best regards,
> Torbjörn Björkman
>
> \score{
> \new Staff
> \relative c' {
> \cadenzaOn
> c8[ e \once \hide Stem f]
> c[ \once \hide Stem e f]
> \once \hide Stem c[ e f]
> }
> }
That's the intended consequence of issue 2866
<URL:https://code.google.com/p/lilypond/issues/detail?id=2866>.
Rereading the issue, I'm not quite sure about the exact rationale but
the main motivation appears to stem from automatic rather than manual
beams.
The report mentions a number of other issue reports. The implementation
of the change was through
dak@lola:/usr/local/tmp/lilypond$ git log -p bd599be12
commit bd599be12a872b9ca95ebc78e0880e2d13c26b4f
Author: Keith OHara <k-ohara5...@oco.net>
Date: Tue May 14 21:53:25 2013 -0700
Beams: be transparent if the first stem is transparent; issue 2866
so that \hideNotes does not hide automatic beams that could have,
but did not, start on a hidden note.
though I provided an initial version of the patch.
--
David Kastrup
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