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Augmented steps in figured bass: Notation by crossing last line of the f


From: Reinhard Hahn
Subject: Augmented steps in figured bass: Notation by crossing last line of the figure
Date: Sun, 13 Nov 2011 16:30:38 +0000 (UTC)
User-agent: Loom/3.14 (http://gmane.org/)

> I'm not top posting.

Please record the following as an enhancement request.

A quite commonly used notation for augmented steps is to draw a line through the
eventually elongated last line of the digit. In this case "Last line" refers to
the order the digit is written manually. This results in a typographic ligature
of the digit together with a plus sign.

In case of the augmented sixth the result should be like the following example
http://de.wikipedia.org/w/index.php?title=Datei:Altsext.gif&filetimestamp=20090401171647
This is better readable then the result of the following snippet

\version "2.12.3"
\figures {
  < 6\\ >4
}

Similar should be possible together with the figures 2,4,5. Here the resulting
plus sign isn't rotated but its is lowered or highered with respect to the
result of 

\version "2.12.3"
\figures {
  \set figuredBassPlusDirection = #RIGHT
  < 5\+ 4\+ 2\+ >4
}

A poor graphical representation is given in
http://www.robertkelleyphd.com/FiguredBass.pdf where the vertical position is
o.k., but it's not really a ligature.

It is quite obvious that the result may be depending on the font used for the
digits. 

A possible notation might be to use the \+ modifier and switch between the
current and the intended behaviour with a property (e.g. 
  \set figuredBassPlusLigature = #TRUE)

Regards
Reinhard 






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