Acciactura legato slurs

[dax2]

   Here is a short version of a message awaiting moderator
approval because it was too long.

   Lilypond 2.3.23 built from CVS without problems, docs too.
However:

   1) the slurs turns 180 degrees in the special
      "acciaccatura" section shown below.

I had attached to png's and source; but you can easily imagine
slurs from note to note where the curve is the wrong way

         \__/
        o    o
        |    |
            
instead of

         ___
        /   \
       o     o
       |     |


   2) convert-ly from 2.3.22 to 2.3.23 did not change anything,   
      (used on Chop. op.52 Ballade 4 from Mutopia-Project)
      not even the \version, but I guess that is ok. 
      I expected some output, though.


Source example (from Mutopia, Chop. op.52, look for dolciss.)

           \set Staff.fontSize = #-1
           \override Stem   #'length = #5.5
           \override Beam   #'thickness = #0.384
           \override Beam   #'space-function = #(lambda (beam mult) (* 0.8 
(Beam::space_function beam mult)))
           \times 2/21 {
               cs16[_"dolciss." \( e a cs e a]
               cs[ a' cs, 

%%dax: The slur here turns downside up in 2.3.23.

               \acciaccatura {
                   \once\override Slur   #'extra-offset = #'( 0 . 8 )
                   \once\override NoteHead   #'font-size = #-4
                   \once\override Stem   #'font-size = #-4
                   e16
               }




As this is bleeding edge release and I don't know how many spam
mails there are awaiting moderator I thought it better to send
this short version.

Regards/dax

-- 
dax2-tele2adsl:dk -- d-axel.dk/  Donald Axel