1) Trevor - I still haven't heard word back about ly:dimension?.
If it
turns out this is not what's supposed to be used, please feel free
to
change it to number? in a separate commit.
The dimension type was first introduced in 2003 in
lily/lily-guile.cc: a2a77093b49bca4f040944a0b4ec16f3beca05ec
+LY_DEFINE(ly_dimension_p, "ly:dimension?", 1, 0, 0, (SCM d),
+ "Return @var{d} is a number. Used to distinguish length "
+ "variables from normal numbers.")
+{
+ return scm_number_p (d);
+}
It's now in lily/general-scheme.cc, essentially unchanged:
LY_DEFINE (ly_dimension_p, "ly:dimension?", 1, 0, 0, (SCM d),
"Return @var{d} as a number. Used to distinguish length"
" variables from normal numbers.")
{
return scm_number_p (d);
}
So the check for the dimension type is identical to that
for number. Nevertheless, the two appear to be consistently
used in ly sources to indicate their different natures.
As 'stem-begin-position is not a length I'll change its
type to number.
Trevor
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