[Lilypond-auto] Issue 2727 in lilypond: Patch: do not draw empty boxes

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Patch Patch-new
New issue 2727 by k-ohara5...@oco.net: Patch: do not draw empty boxes
http://code.google.com/p/lilypond/issues/detail?id=2727

Anything that would draw an empty box, like the white background box in
  { b1-\markup\whiteout"" }
gives a warning "Found infinity or nan in output", without any pointers to  
the offending input.  Better if the box-drawer to just skips the output  
routine for empty boxes.

This bothers me because I do things like this
  \override TextScript #'whiteout = ##t
  \cueWhile "flute" "" #UP { g4 bes4 }