Re: lilypond-devel Digest, Vol 200, Issue 23

[Christopher Heckman]

On Wed, Jul 17, 2019 at 11:00 AM <address@hidden> wrote:
>
> From: David Kastrup <address@hidden>
> To: James <address@hidden>
> Cc: lilypond-devel <address@hidden>
> Subject: Re: problem with predefined-guitar-fretboards.ly?
> Message-ID: <address@hidden>
> Content-Type: text/plain
>
> James <address@hidden> writes:
>
> > Hello,
> >
> > I saw arecent update by a LP user to an 'already-fixed' tracker
> >
> > <https://sourceforge.net/p/testlilyissues/issues/3290/>
> >
> > That made it into my inbox thus:
> >
> > On 06/07/2019 21:54, Christopher Heckman wrote:
> >> It's isn't just the website; the boards for augmented and diminished
> >> chords are calculated incorrectly.
> >>
> >> \include "predefined-guitar-fretboards.ly"
> >> \new FretBoards \chordmode { b:dim f:aug aes:aug g:dim }
> >>
> >> The F aug chord is incorrect; it actually shows a G augmented
> >> chord.
>
> >> In all four cases, the numbers at the bottom do not match up with the
> >> diagram. The B dim number should be 2343, the A flat aug 032110, and
> >> G dim should be 3131.
>
> This is just a misunderstanding of the numbers: they are not fret
> numbers but fingering numbers.

Yes, that's a mistake on my part. However, the G+ chord still doesn't
display correctly.

> It is a bit unusual that they are
> present by default: typically players are expected to figure them out on
> their own, and sometimes they are just inscribed in the dots.
>
> f:aug is clearly wrong, aes:aug has the right notes but the root note is
> awkward, not being the lowest.  I have no idea how guitarists would feel
> about that.

My guess is: not too good. The C aug, E aug, and G# aug all have the
same notes, so it's vital to have the correct root.

--- Christopher Heckman