Parenthesized divisio minima

[henryso]

A request from the mailing list.

It would be nice to have the ability to typeset a parenthesized divisio minima like you see in the Graduale Triplex for when Solesmes edited "out" the marking.

I think it would be also good to have support parenthesized virgula as well with a similar syntax.

[henryso]

What gabc notation should we use?

My inclination would be to make it ,? and `?, but we've already used ? for :? (dotted divisio maior), so we might want to avoid the potential clash. Perhaps ,~ and `~?

[henryso]

There as an additional request for parenthesized flats, sharps, and naturals.

[henryso]

@eroux @rpspringuel Any thoughts on the notation?

[rpspringuel]

I don’t see a potential clash on the use of `?`. The parenthesis say “optional” to me much as the dotted divisio maior does. ✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️✝️ Fr. Samuel, OSB (R. Padraic Springuel) St. Anselm’s Abbey 4501 South Dakota Ave, NE Washington, DC, 20017 202-269-2300 (c) 202-853-7036 PAX ☧ ΧΡΙΣΤΟΣ

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On Oct 14, 2019, at 11:21 PM, Henry So ***@***.***> wrote: @eroux @rpspringuel Any thoughts on the notation? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or unsubscribe.

[henryso]

The challenge now is to draw nice-looking parentheses. I've tried a little, but mine don't yet look good. I will keep at it.

[henryso]

I started the coding for this, and I need to modify how #7 of \GreSyllable and \GreBarSyllable. In tracing through the code, I see constructs like:

\ifnum#7>9 %
  \ifnum#7<20 %
    % do something
  \else %
     % do something else
  \fi %
\fi

Best I can tell, #7 will be 20/40/60 + some AT_ constant as per the gregorio executable. The AT_ constants range from 0 through 9, so \ifnum#7>9 is looking for an alteration. However, the code in \ifnum#7<20 will never be executed in this construct. Am I missing something?

@eroux @rpspringuel Any background here?

[henryso]

@eroux @rpspringuel Please disregard. I found it after looking at it with less sleepy eyes. Values between 9 and 20 are bars.