Re: alternatives not taken into account in automatic accidentals

[Frédéric Bron]

> That reminds me of a problem I once encountered.  Aren't accidentals
> normally supposed to be cancelled by the next bar line?  This one carries
> over, so that the second B flat has no flat printed.
>
> \version "2.12.1"
> \include "english.ly"
>
> \relative c'
> {
>  c4 c bf \bar "||" bf | c1
> }

It looks that it comes from the fact that it is considered part of the
same measure number 1:

\relative c' {
  \override Score.BarNumber #'break-visibility = #end-of-line-invisible
  \set Score.barNumberVisibility = #(every-nth-bar-number-visible 1)
  c4 c bf \bar "||" bf | c1
}

Frédéric