On Sat, May 11, 2013 at 11:42 PM, David Kastrup <d...@gnu.org> wrote:

> Janek Warchoł <janek.lilyp...@gmail.com> writes:
>
> > 2013/5/11 David Kastrup <d...@gnu.org>:
> >> Janek Warchoł <janek.lilyp...@gmail.com> writes:
> >>> my experience (particularly with Fried project) shows that
> >>> with regard to slurs and ties, LilyPond is very far from automated
> >>> typesetting. If you want publication quality, you _have_ to tweak the
> >>> output quite heavily - would you rather do this via setting
> >>> control-points directly?  Actually, \shape is quite close to the
> >>> spirit of automated engraving, because if the layout changes slightly,
> >>> \shape modifications usually "adapt" and still produce good results.
> >>
> >> Not if there is a change in line/page breaking.
> >
> > Sure, but it's still about a thousand times more reliable than
> > overriding control-points directly.
>
> Hardly.  It's slightly more benign against different amonuts of
> stretching/shrinking,


"Slightly"?  This strikes me as a bit of an exaggeration.


> but when the slur positioning algorithm changes,
> relative changes to control points will give unpredictable results.
>

As I said above, it is most useful when such layout details as line and
page breaks are settled--as, of course, is directly overriding control
points,

-David
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