Re: Tablature: proper support for tie/slur- and tie/glissando-constellations (issue2191042)

[Marc Hohl]

address@hidden schrieb:
> On 2010/09/17 07:01:40, marc wrote:
>
> > TO be honest, I don't understand what you mean here.
>
> Add
>
> #(ly:set-option 'check-internal-types)
>
> to your snippet below.
>
> Two of the bounds aren't TabNoteHeads; these are the left bounds of the
> ties following a break.
Ah, ok, now I see. Thanks!
> > > Try running `make check' to see what I mean. ;)
> > Here neither - I see I made a mistake, because `make check' fails, but
>
> > the output doesn't help a lot.
>
> Is this *before* or *after* you changed the version number in the
> regtest?
>
> Any regtest with a version number later than the current version will
> break `make check'.
Um, I don't know, probably before. But even if I do 'make check' now, I got

/home/marc/git/lilypond/scripts/build/out/output-distance 
--create-images --output-dir /home/marc/git/lilypond/out/test-results 
input/regression/out-test-baseline input/regression/out-test/
Traceback (most recent call last):
 File "/home/marc/git/lilypond/scripts/build/out/output-distance", line 
1261, in <module>
   main()
 File "/home/marc/git/lilypond/scripts/build/out/output-distance", line 
1258, in main
   compare_trees (args[0], args[1], name, options.threshold)
 File "/home/marc/git/lilypond/scripts/build/out/output-distance", line 
969, in compare_trees
   data.compare_trees (dir1, dir2)
 File "/home/marc/git/lilypond/scripts/build/out/output-distance", line 
812, in compare_trees
   (root, dirs, files) = os.walk (dir1).next ()
StopIteration
make: *** [local-check] Fehler 1

I don't know whether this is due to my erroneous file, but it is not 
very helpful to me...

> [...]
> I think the only sane method would be to use a scheme engraver, since
> you could acknowledge interesting grobs and make typesetting decisions
> for the TabNoteHead based on the grobs present at a particular timestep.
D'oh - I failed already once trying my luck with engravers, but  I'll 
give it a try.
Could you please sketch the functionality a bit in more detail? Do I 
still need
the 'tied-to' bit, or is the engraver responsible for the full 
appearance of the
tab note head?

Thanks,
Marc