Re: imperfect convert-ly rules

[Keith E OHara]

On Thu, 18 Nov 2010 12:40:08 -0800, Neil Puttock <address@hidden> wrote:
> On 18 November 2010 06:21, Keith E OHara <address@hidden> wrote:
> > The attached text contains replacement rules for that section that
> > have been working for me.
>
> I'm afraid these changes are too naïve, Keith.

But I *like* being naive, Neil.

The ugly truth is the units for vertical spacing changed from mm to staff 
spaces.  The current convert-ly rule also fails to convert to the new units, in 
cases where units are not specified, which is the subset of cases that it 
catches.

My request is that
  between-system-padding = 5\mm
be converted to
  system-system-spacing #'padding = 5\mm

Having convert-ly preserve my *intentions* about request space, while 
converting to the new syntax, is useful, although not perfect.

Now that you have opened my eyes, I want more!  Let's also change 
paper-defaults-init.ly so that \mm really means millimetres :
  mm = #(/ 1.0 staff-space)
  in = #(* 25.4 mm)
... or something like that.  I remain naive about what staff-space, ly:unit, 
and output-scale actually mean.

-Keith