aftergrace consistently close to the next bar line

[jcarll]

Good day,



I use afterGrace notes to mark the end of a glissando.

At the moment lilypond places these afterGrace
      notes somehow depending on the note's length.
    I want the glissando to be played over the
      entire length of the time unit, so the afterGrace notes should be
      placed as close as possible to the following bar line (or time
      unit), consistently.
      
      How can I achieve this?
      
      For example: In the bar (image) above I would like to have the
      afterGrace notes eih'' of the violins at the same x-position
      (close to the bar line) as the fis' of the third voice.
      
      %%%
      % violin 1
        \time 3/2 cis'2.\p^"col legno" \glissando \afterGrace gis'
      \glissando {\once \hide Stem \parenthesize eih4} |
      
      % violin 2
        \time 3/2 cis'2.\p^"col legno" \glissando \afterGrace disih
      \glissando {\once \hide Stem \parenthesize eih4} |
      
      % viola
        \time 3/2 \afterGrace cis''1.\p^"col legno" \glissando {\once
      \hide Stem \parenthesize fis,4} |
      %%%
      
      
      
      Greetings,
      Jonathan