"Bar_engraver" - bug or wrong description

[Thomas Morley]

Hi,

removing the "Bar_engraver", also removes all system-start-clefs,
apart from the initial clef of line one.
Manually setted clef are not removed.

Example (slightly altered lily-b6fa31d7.ly)

\score {
  \new StaffGroup <<
    \new Staff {
      \relative c'' {
        a4 b c2 |
        a4 b c2 |\break
        \clef alto a4 b c2 |
      }
    }
    \new Staff {
      \relative c'' {
        a4 b c2 |
        a4 b c2 |
        a4 b c2 |
      }
    }
  >>
  \layout {
    \context {
      \Staff
      \remove Bar_engraver
    }
  }
}

If it's intended behaviour, IR 2.2.7 Bar_engraver gives a misleading
description:
"Create barlines. (...)"

I found no reference about removing clefs in LM, NR or IR.

Same behaviour in "2.12.3", "2.14.2" and "2.15.42"



Cheers,
  Harm