Rest positions are ignored under beams

[Mats Bengtsson]

It seems that the \rest feature doesn't work if the rest is placed under 
a beam.
The bug was introduced already in version 2.8 and remains in 2.9.26.
This can for example be seen by comparing the rest-pitch.ly regression test
in versions 2.8 and 2.9 with that of version 2.6 (where it worked 
correctly).
Another illustration is

\version "2.9.26"
\relative c'{
a8 a\rest b b\rest a8[ a\rest b b\rest] |
}

  /Mats

--
=============================================
        Mats Bengtsson
        Signal Processing
        Signals, Sensors and Systems
        Royal Institute of Technology
        SE-100 44  STOCKHOLM
        Sweden
        Phone: (+46) 8 790 8463                         
       Fax:   (+46) 8 790 7260
        Email: address@hidden
        WWW: http://www.s3.kth.se/~mabe
=============================================