Re: Double-underline markup

[Carl Sorensen]

On 10/19/19, 3:13 AM, "Thomas Morley" <address@hidden> wrote:

    Am Fr., 18. Okt. 2019 um 19:21 Uhr schrieb Carl Sorensen <address@hidden>:
    >
    > Why not add it to lilypond proper?  I think that we would want to be 
careful about property names (perhaps with an underline-details property to 
minimize namespace pollution), but I think it would make a great addition to 
Lilypond.
         Carl: I don't understand your details-suggestion, could you
    explain more detailed?

IIUC, underlined text is a TextScript object.  Adding a "count" property to a 
TextScript object would apparently not apply to an underline, but to the 
TextScript as a whole.  So if we want to add underline as a property of a 
TextScript object instead of an argument to a function call, we would need to 
somehow indicate the property applied to the underline.

So adding a property to TextScript (probably via the text-interface)  called 
underline-details  that would be an alist (like fret-diagram-details) and could 
have properties like thickness, color, count, gap, padding, etc.  Then they 
would clearly apply to the underline.  And you could set the defaults exactly 
like the current underline properties, so there would be no change to the 
existing code, and no convert-ly rule would be required.

I don't know if this is the best way to do it, but it's one way to do it.

Thanks,

Carl