tweaking the dash pattern of one slur out of simultaneous slurs

[Kieren MacMillan]

Hello all,

In the snippet below, I have a single voice with two slurs. I want the lower 
one to be dashed. I can’t seem to find the proper incantation; three (of many) 
ways that I’ve tried are included in the snippet.

Any guidance would be appreciated!
Kieren.

%%%%  SNIPPET BEGINS
\version "2.19.80"

{
   c''1 \=1( -\slurDashPattern #0.5 #2.0 \=2_(
   c'' \=1) \=2)
}

{
   c''1 \=1( \slurDashPattern #0.5 #2.0 \=2_(
   c'' \=1) \=2)
}

{
   c''1 \=1( -\tweak dash-fraction #0.5 \=2_(
   c'' \=1) \=2)
}
%%%%  SNIPPET ENDS

________________________________

Kieren MacMillan, composer
‣ website: www.kierenmacmillan.info
‣ email: address@hidden