Grace note spacing & alignment in score

[Michael Seifert]

        Hello everyone,

        I’m working on a score transcription project, and I’m having some 
trouble getting “nice” grace note placement in a section involving a piano part 
and a double bass.  

        Specifically, if I use the default settings in the snippet below, the 
grace notes in the piano part cause extra space to be inserted between two of 
the eighth notes in the bass line.  This makes the rhythm harder to read for 
the conductor.  

        If, on the other hand, I use the "\override 
SpacingSpanner.strict-grace-spacing = ##t” line (currently commented out), then 
the spacing of the bass line looks fine.  But the accidentals for the grace 
notes collide with nearby noteheads, and the grace notes at the start of the 
measure collide with the time signature (or, in other situations, the preceding 
bar line).

        What I would like is for grace notes at the start of a bar to lead to 
additional space insertion in other lines, but mid-bar arpeggios not to lead to 
additional space insertion.  This is effectively the convention suggested in 
Gould (p. 127–8), and it's also what’s done in the hand-engraved score I’m 
transcribing (screenshots attached;  they also include a percussion part which 
I’ve omitted from my MWE.)

        Any ideas on how to accomplish this?  Thanks in advance for your help!

        Mike Seifert 
        Quaker Hill, CT, USA

Code follows:
—————————————————
\version "2.24.0"

RHpianonotes = {

\time 2/2
\clef bass

\relative c {
\transposition c'

\stemUp \change Staff = "lower" \grace { d,32( a' bes \change Staff = "upper" 
\stemDown e f fis} a8) \stemNeutral r8 r4 
r4 \stemUp \change Staff = "lower" \grace { d,,32( a' bes \change Staff = 
"upper" \stemDown e f fis} a8) \stemNeutral r8 

r2 \stemUp \change Staff = "lower" \grace { d,,32( a' bes \change Staff = 
"upper" \stemDown e f fis} a8) \stemNeutral r8 r4

}
}

LHpianonotes = {

\time 2/2

\clef bass

\relative c {

\grace{s8.} s1*2
}
}

bassnotes = {

\relative c {

\clef bass
\time 2/2
\transposition c

\grace{s8.} fis'8->( f) d4 r8 \clef tenor a'8 b a
\tuplet 3/2 {c->( b) a} eis8. fis16 d4 r8 cis8~

}

}

\score{

\layout {
    \context {
      \Score
%         \override SpacingSpanner.strict-grace-spacing = ##t
    }
  }

<<

\new PianoStaff 
<<
        \new Staff = "upper" {\RHpianonotes}
  \new Staff = "lower" {\LHpianonotes}
>>

\new Staff="Staff_bass"
<< \bassnotes  >>

>>
}