Still puzzled about the beaming

[Johan Vromans]

Hi,

According to what I recall from music theory, with time signature 1/1
there is one accent per bar, in 2/2 there are two accents, in 4/4
there are four accents and in 8/8 there are eight accents.

This simple melody:

  melody = { g8 g g g g g g g | g16 g g g g g g g g g g g g g g g }

When typeset with different time signatures 1/1, 2/2, 4/4 and 8/8
it gives results that I cannot quite understand.

For all time signatures, the 16th notes are beamed according to the
accents. The 8th notes are also beamed according to the accents EXCEPT
in 4/4, where they are beamed as if there were two accents instead of
four.

Is this a bug (which can hardly be the case for something as obvious
as this) or am I missing something trivial?

-- Johan

\version "2.8.7"

melody = { g8 g g g g g g g | g16 g g g g g g g g g g g g g g g }

\score {
  << \relative c'' { \time 1/1 \melody } >>
}
\score {
  << \relative c'' { \time 2/2 \melody } >>
}
\score {
  << \relative c'' { \time 4/4 \melody } >>
}
\score {
  << \relative c'' { \time 8/8 \melody } >>
}