Here's just a summary of the remarks I gave earlier with additional
references and a set of specific changes proposed to the spec:
* New single-note form: Virga, reversed
The note as mentioned at [1]. The authors of Gregorio software [2], in
lack of a better name, have called it virga reversa [3], but I'm yet to
find any actual use of such term in literature. There is a practice
within Unicode to deal with such cases by a straightforward suffix
'reversed' [4]. This would be the most sensible solution, I believe.
* New single-note form: Punctum inclinatum, small
This note is described on p. 24 of Dom Dominic Johner, A New School of
Gregorian Chant, published in 1925 [5]. Here it seems there's no special
name for this form, either. Both Liber Usualis ([6], p. xj) and Graduale
Romanum ([7], p. x), both Solesmes edition from 1961, don't mention it
explicitly, but only show the alternative form of the liquescent neume.
Similar vagueness is found in Willi Apel's Harvard Dictionary of Music
(his Gregorian Chant doesn't even deal with it). People behind Gregorio
call it punctum deminutum; people behind Lilypond punctum inclinatum
parvum. Punctum inclinatum deminutum, I think, would be quite pragmatic
Latin name, but that's still only my personal preference, nothing to
rely on.
* New base elements in multiple-note forms to combine a podatus and for
use with other neumes, specifically the porrectus.
* New connecting line with an interval of a sixth.
Example of a neume with such an interval can be seen on p. 441 in The
Liber Usualis, Solemnes edition from 1961 [6]. In the already linked
Johner, New School [1], p. 7, there's also a note on maximum possible
intervals in plainchant.
* New set of entry strokes for use when building complex neums (along the
connecting lines), one for each interval.
* Change in the names of the ligated strokes as seen in multiple-note
forms from 'porrectus' to 'ligatura' or just 'ligated stroke' (the
latter being maybe more adequate within the spec in contrast to the
more ambiguous Latin term).
* Removal of the precomposed neumes of podatus and clivis in the
multiple-note forms.
* Move of the punctum mora to articulations section.
These changes would of course reguire slight rework of the examples
given in the implementation notes.
That would be it. Have a nice day everybody.
Regards,
Grzegorz Rolek
[1]
https://mail.gna.org/public/gregorio-users/2012-10/msg00005.html
[2]
http://home.gna.org/gregorio/[3]
https://mail.gna.org/public/gregorio-users/2013-06/msg00126.html[4]
http://unicode-search.net/unicode-namesearch.pl?term=reversed[5]
http://www.ccwatershed.org/media/pdfs/13/08/19/15-38-42_0.pdf[6]
http://www.ccwatershed.org/media/pdfs/13/08/14/14-59-32_0.pdf[7]
http://www.ccwatershed.org/media/pdfs/13/08/14/13-43-42_0.pdf#############################################################
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