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[Lilypond-auto] Issue 2924 in lilypond: Doc: \startMeasureCount and \sto


From: lilypond
Subject: [Lilypond-auto] Issue 2924 in lilypond: Doc: \startMeasureCount and \stopMeasureCount needs documenting
Date: Wed, 24 Oct 2012 14:04:33 +0000

Status: Accepted
Owner: ----
Labels: Type-Documentation

New issue 2924 by address@hidden: Doc: \startMeasureCount and \stopMeasureCount needs documenting
http://code.google.com/p/lilypond/issues/detail?id=2924

Rietveld for command is here:

https://codereview.appspot.com/6730044/

This patch allows the user to number groups of successive measures, which
is useful as an aid to the performer in keeping track of repetitions.  There
is no requirement that the counted measures be repeated, however.  The
number is centered on the measure (discounting prefatory material), above
the staff by default.

A new grob, a spanner called `MeasureCounter,' is created.  Each element of
a count is an independent instance of this grob. A new event-class, `measure-
counter-event,' is also defined.

At present, the engraver, `Measure_counter_engraver,' must be added
to the relevant context (probably Staff) in the .ly file.  This engraver
has been written in Scheme, following the precedent of `Span_stem_engraver.'

The user uses the commands `\startMeasureCount' and `\stopMeasureCount'
to frame the measures to count.  The initial number is read from a
new grob-property, 'count-from, which may be overridden.




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