Lilypond acciaccatura slur position

Question

Lilypond issue: I'm trying to get the slurs in acciaccatura to look like this (generated in Musescore):

Notice that the slur is beneath the grace note. However, Lilypond insists on putting the slur above:

In voice one for the bar in question I have:

\acciaccatura   d8(  -4   <c a>4)  -2 -1 <g b>4 e4 \rest | 

and in the second voice I have:

e2  e'4

I've tried (and failed) to find something like this in the manual and the snippets.Is it possible to move the slur?

Answer 1

To me, the easiest change is to include \once \override Slur #'direction = #DOWN immediately preceding the \acciaccatura. This produces:

\version "2.19.82"

line = \relative c'' {
  \key g \major
  \time 3/4
  <<
    {
      \once \override Slur #'direction = #DOWN
      \acciaccatura d8-4 <c a>4-2-1 <g b>4 r4 | 
    }
    \\
    {
      e,2 e'4 |
    }
  >>
}

\score {
  \new Staff \line
  \layout { }
}

---

Or, if the slur moving to C is a necessity, you can skip all of this and just input \slashedGrace d8-4_( <c) a>4-2-1:

line = \relative c'' {
  \key g \major
  \time 3/4
  <<
    {
      \slashedGrace d8-4_( <c) a>4-2-1 <g b>4 r4 | 
    }
    \\
    {
      e,2 e'4 |
    }
  >>
}

\score {
  \new Staff \line
  \layout { }
}

Answer 2

Put _ before the ( which represents the slur.

\version "2.18.2"

{
\time 3/4
\key g \major
\acciaccatura d''8_( <c'' a'>4) <g'b'> r4
}

If Lilypond does the opposite, and curves the slur down when you want it up, put a ^ before the (.

Answer 3

Thanks to everyone for the suggestions. They have helped me narrow down the issues.

I have now found a way to get the look I want:

\override Flag.stroke-style = #"grace"   d8_(-4   <c) a>4  -2 -1
   <g b>4 e4 \rest

Which generates:

Its slightly more complicated than I'd have liked, but there you go. Of course, if anyone can spot an easier solution I'd love to hear about it.