Re: Question for a new LilyPond user (parts-only editing)

[Flaming Hakama by Elaine]

On Wed, Dec 6, 2017 at 8:33 AM, David Kastrup <address@hidden> wrote:

Flaming Hakama by Elaine <address@hidden> writes:

> Here is an illustration of using tags for this purpose.
>
> Note that there are other approaches, even using tags.
> This approach uses the \keepWithTag within each \score
> to distinguish Part vs Score, PDF vs MIDI, the specific
> instrument, and each segment the piece.

Really, I'd use

\tagGroup SegmentA,SegmentB,SegmentC
\tagGroup PDF,MIDI
\tagGroup Part,Score

with this so that you don't have to list unrelated tags (like
SegmentA,SegmentB,SegmentC) whenever you use \keepWithTag for one
purpose.

Thanks for the help.  I have to admit, however, I totally don't understand this application of \tagGroup.

Maybe \tagGroup has more useful use cases for \removeWithTag?

Using \keepWithTag already has the effect of excluding any tagged content that isn't among the tags specified.

What is gained by specifying a group of tags to ignore, since they are already being ignored?

In the example in the docs, using tagGroup produces the same result as not using it:

http://lilypond.org/doc/v2.19/Documentation/notation/different-editions-from-one-source

\version "2.19.80"

music = \relative {
  \tag #'violinI { c''4^"violinI" c c c }
  \tag #'violinII { a2 a }
  \tag #'viola { e8 e e2. }
  \tag #'cello { d'2 d4 d }
  R1^"untagged"
}

\new Voice {
  \mark "No tagGroup"
  \keepWithTag #'violinI
  \music
}

\new Voice {
  \mark "With tagGroup"
  \tagGroup #'(violinI violinII viola cello)
  \keepWithTag #'violinI
  \music
}

So, what is \tagGroup really doing in this case?

If you explain it to me, I can try to come up with a better example for the docs.

Thanks,

David Elaine Alt

415 . 341 .4954                                           "Confusion is highly underrated"

address@hidden

skype: flaming_hakama
Producer ~ Composer ~ Instrumentalist
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