Tied accidentals (in chords) spaced as if they were visible

[Marcus Macauley]

This is probably related to the "Release-critical accidentals spacing bug"  
(http://lists.gnu.org/archive/html/bug-lilypond/2006-03/msg00039.html),  
but here's a telling example:

\version "2.7.38"
\layout {ragged-right = ##t}
{
<fis' ais' cis''>2~ <fis' ais' cis''>~ | <fis' ais' cis''>~ <fis' ais'  
cis'' gis'>
}

It seems that when a chord with accidentals is tied across the barline, or  
when a new note is added to the chord, the spacing accounts for the old  
accidentals as if they were repeated. Notice that in the example above,  
the second chord doesn't have any extra space (it's mid-measure and  
doesn't add any new notes), while the third and fourth chords have just  
enough extra space to accomodate all the accidentals, whether or not  
visible.

Marcus