Re: removing unwanted accidentals

[Erik Sandberg]

Citerar Stephen <address@hidden>:

> I think we want Lilypond to continue to follow standard practive. If we give
> users the ability to violate those rules then total novices will start
> making mistakes.

We don't have to document the feature in a way such that novices will be able
to
use it. I just htink it's a good idea to have the feature for completeness. If
there is a bug somewhere that makes an unwanted accidental pop up, it's nice if
there is a possiblilty to just write a quick workaround.

> I think you know that in the example you gave, a person reading the score
> would just play an f sharp where you want an f natural if you suppressed the
> natural. Why supply a way to suppress that natural if we also have to say
> never actually do if you do not want them to play f sharp? 

What I meant, was related to Karl's example. I don't have lily where I am now,
but imagine a combo of his and my example; something like

\key d\major fis4 r r r | f2 f | \set Score.barNumber = #1 r2 f |

Here someone might want to avoid the natural before the last f (there might
exist better examples), and I think it's impossible with current lily due to
the bug Karl found.

It's just an example, and it's constructed, but shows that there is a potential
need for this kind of setting. I can recall earlier discussions with similar
content.

The main reason I want it, however, is the philosophy that if you want to tweak
something, you often want to express exactly what you are tweaking, no more, no
less. All Karl wanted to express in his code, was that for a particular note,
the accidental should be turned off. He didn't want to express that this note
belongs to a part of the music which uses an alternative practise for
displaying accidentals. 


Another application of a \noAccidental feature, is a mail that was sent some
days ago to lily-user iirc. There was a sharp before the cis2 in {cis1~\break
cis2}, and this person (Thomas iirc) wanted to suppress this. 
You could do that like
{cis1~\break #(set-accidental-style 'no-forget) cis2 #(set-accidental-style
'default) }
but IMHO this would be more logical, & easier to read and write:
{cis1~\break cis2\noAccidental}

Erik