Hidden accidentals hiding visible ones

[Nick Payne]

This is probably user error rather than anything else, but I just wasted 
20 minutes wondering why an accidental on a note in a score was missing 
in the PDF output before realising that the same note appeared earlier 
in the same bar but in a hidden voice.

In most guitar scores I use a hidden voice for such things as 
simultaneous text spanners, arpeggio brackets to indicate barring, etc.

The following example shows that the order of the voices in the source 
file affects whether the accidental appears or not:

\version "2.13.50"

\relative c' {
<< {
            \override NoteColumn #'ignore-collision = ##t
            \override NoteHead #'transparent = ##t
            \override Stem #'transparent = ##t
            \override Dots #'transparent = ##t
            \override Accidental #'transparent = ##t
            \override NoteHead #'no-ledgers = ##t
            c4 cis cis cis |
        }
    \\ { c4 c cis cis }
>>
}

\relative c' {
<< { c4 c cis cis }
    \\ {
            \override NoteColumn #'ignore-collision = ##t
            \override NoteHead #'transparent = ##t
            \override Stem #'transparent = ##t
            \override Dots #'transparent = ##t
            \override Accidental #'transparent = ##t
            \override NoteHead #'no-ledgers = ##t
            c4 cis cis cis |
        }
>>
}

Nick

test.png
Description: PNG image