Issue 1916 in lilypond: lilypond should issue a warning regarding incorrect ligature

[lilypond]

Status: Accepted
Owner: ----
Labels: Type-Defect Warning

New issue 1916 by brownian.box: lilypond should issue a warning regarding  
incorrect ligature
http://code.google.com/p/lilypond/issues/detail?id=1916

http://lists.gnu.org/archive/html/bug-lilypond/2011-09/msg00599.html

%----------------8<---------------------
\version "2.15.12"

\new MensuralStaff {
  \cadenzaOn
  \[ a'\breve g' as' \]
}
%----------------8<---------------------

This code contains incorrect (impossible) ligature, and lilypond should  
warn about this.