Re: bar-line interface part 2/2: New bar line definition standard (issue 6498052)

[dak]

http://codereview.appspot.com/6498052/diff/32001/scm/bar-line.scm
File scm/bar-line.scm (right):

http://codereview.appspot.com/6498052/diff/32001/scm/bar-line.scm#newcode225
scm/bar-line.scm:225: (define-public bar-glyph-alist '())
This interface definition is asking for trouble.  It is an important
feature of LilyPond that if you use standard commands, their effects to
not bleed over from one run to the next.  Information-carrying data
structures, for that reason, should be initialized in a .ly file loaded
from init.ly.  Even then, the basic data structure should be one that
can be replaced by overwriting with a saved copy.  That means that
hash-tables have to be either read/only, or start out as _empty_ in a
session (hash tables defined in the init.ly session get cleared at the
end of session IIRC).

http://codereview.appspot.com/6498052/