hideNotes unHideNotes with repeat

[Ted S. Sunhede Fulk]

Hello everyone,

I tried to use the hideNotes unHideNotes and *1/2 trick to have a tie 
and a slur attack to the 2nd alternative of a repeat. However, the 
output dropped the beams (it was an 8th note and two 16th notes).

I was using Lilypond 2.4.3 for Windows XP (my iBook with 2.4.5 was at 
home -- I have not tried it on it yet).

Here is the code snippet:

soprano =  \relative c'' {
       \set Score.defaultBarType = ":"
       % Changes bars to dotted.
              \set Staff.instrument = "S "
           \clef treble
       \key g \mixolydian
       \time 2/2
       \repeat volta 2 {
           d,2 e4 fs g d e fs g4. g8 a4(c ~ c8 b16 a16) b4 c a
           a g fs fs g( e4. f8 g4 ~
       }
       \alternative {
           { g8 fs16 e16) fs4 g2 }
           { \hideNotes g8*1/2( ~ \unHideNotes  g8 *1/2 fs16 e16) fs4 g2 }
       }