\override Glissando #'springs-and-rods = #ly:spanner::set-spacing-rods
\override Glissando #'minimum-length = #4
The code is a mystery but potentially useful for the spacing of a variety of objects. Will require tests.
\override Glissando #'springs-and-rods = #ly:spanner::set-spacing-rods
\override Glissando #'minimum-length = #4