bindings in lily-module

[Thomas Morley]

Hi,

while working on a patch to improve markup->string from markup.scm I
noticed, that
  (pretty-print (list? (ly:module->alist (resolve-module '(lily)))))
inserted at toplevel in markup.scm returns several times:
  programming error: unbound variable in module
  continuing, cross fingers
While doing same in a ly-files return no error.

Adding some debugging code in markup.scm:
(pretty-print
  (filter-map
    identity
    (module-map
      (lambda (e v)
        (if (variable-bound? v) #f e))
      (resolve-module '(lily)))))
The following list is returned:
(make-safe-lilypond-module
  make-span-event
  midi-program
  percussion?
  remove-stencil-warnings
  scale-layout
  score-lines-markup-list
  score-markup
  span-bar::notify-grobs-of-my-existence
  stencil-whiteout
  tremolo::get-music-list
  volta-bracket::calc-hook-visibility
  write-performances-midis
  invalidate-alterations
  all-music-font-encodings
  alterations-in-key
  backend-testing
  base-length
  layout-extract-page-properties
  beam-exceptions
  lilypond-main
  beat-structure
  line-markup
  calc-repeat-slash-count
  lookup-font
  default-time-signature-settings)

I guess at the time it is called not all bindings are done in the
lily-module as opposed to caling it far later in a ly-file.

Is this correct?
I can cope with it, just wanted to be sure.

Thanks,
  Harm