Unpretty vertical alignment of figureless accidentals

[ghost]

Only naturals and (to a lesser extent) sharps are affected, flats are positioned nicely:

\markup \rN { V 6 5 f }
\markup \rN { V 6 5 n }
\markup \rN { V 6 5 s }

[davidnalesnik]

Right now figures are put in a right-aligned column. Center-column looks right with this example, but it will cause ugliness when a longer figure (like a figure with an alteration before it) is combined with shorter.

[davidnalesnik]

To see what's going on and a possible solution, look at the output of the following code:

\version "2.19.30"

\header {
  tagline = ##f
}

\markup \override #'(baseline-skip . 2.5) \right-column { \box { foobar 5 \natural } }

\markup \override #'(baseline-skip . 2.5) \right-column { \box { foobar 5 \hcenter-in #1.25 \natural } }

\markup \override #'(baseline-skip . 2.5) \right-column {
  \box { foobar 5 \concat { 3 \hcenter-in #1.25 \natural } }
}

The first example shows that the poor positioning of the natural is due to its smaller stencil extent in the X direction. (It also shows the rationale behind a right-aligned column.)

The second example modifies the positioning of the natural by enlarging the stencil-width to match a typical figure number. (This appears to be the only way to adjust positioning within a right-column.)

The third example demonstrates that that enlarged character might be combined with others. Perhaps the enlargement would substitute for the whitespace currently being added between accidental and number.)

Possibly we should define a special set of accidentals for use within figures, each one enlarged so its extents match some representative number.