Re: how to add barre indications to automatic fret diagrams?

[pls]

On 21.05.2015, at 03:49, Carl Sorensen <address@hidden> wrote:

> 
> 
> On 5/20/15 7:30 PM, "Carl Sorensen" <address@hidden> wrote:
> 
>> 
>> 
>> On 5/19/15 12:45 PM, "pls" <address@hidden> wrote:
>> 
>>> Hi all,
>>> 
>>> LilyPond¹s automatic fret diagrams really are a very helpful feature!
>>> More often than not it helps to not having to predefine and store a
>>> diagram in a lookup table.  But it has one little drawback: it doesn¹t
>>> automatically include a barre indication when several strings are to be
>>> covered by one finger.  The default diagram actually looks a bit as if
>>> six fingers were needed to play this chord (see example).
>>> 
>> Actually, this should be a feature request for automatic fret diagrams.
>> Any time two strings have the same finger, they could be part of a barre.
>> And it would be relatively straightforward to keep a list of minimum and
>> maximum strings for each finger, and add the necessary barre indications.

This sounds great!

Unfortunately this thread got broken some days ago.  Harm already sketched a 
first automated solution (see 
http://osdir.com/ml/lilypond-user-gnu/2015-05/msg00565.html).  It shows a 
problematic area of implementing the approach “Any time two strings have the 
same finger, they could be part of a barre": transposing chords with open 
strings.

> 
> A feature request has been added as Issue #4409.
> https://code.google.com/p/lilypond/issues/detail?id=4409

Thank you for the wonderful fret diagram code and for adding this feature 
request!

patrick