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Re: Context paths (and the Edition Engraver)
From: |
David Kastrup |
Subject: |
Re: Context paths (and the Edition Engraver) |
Date: |
Tue, 21 Jan 2020 20:20:44 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) |
Dan Eble <address@hidden> writes:
> On Jan 21, 2020, at 11:31, Jan-Peter Voigt <address@hidden> wrote:
>> I'd like that, though it would be a quite invasive change.
>> And if we stay with the string for the context id and then use
>> lists/paths in the \context statement like
>> \new Staff = "choir" << \new Voice = "soprano" …
>>
>> and then use
>> \context Voice = choir.soprano
>>
>> it would be inconsistent with \new <Context> = "…"
>>
>> I will write down some more text about this topic later.
>
> I see similarities with languages like CSS and XPATH select nodes in a
> DOM. Notation borrowed directly from them will not integrate well
> into LilyPond, but it might be fruitful to ask how we could modify
> expressions like these to fit in.
>
> %% find the voice in the example quoted above, very specifically
> \context Staff#choir > Voice#soprano { … } % CSS
> \context Staff[@id=choir]/Voice[@id=soprano] { … } % XPATH
>
> %% ditto, but using context type only
> \context Staff > Voice { … } % CSS
> \context Staff/Voice { … } % XPATH
>
> %% ditto, but using ID only
> \context #choir > #soprano { … } % CSS
> \context [@id=choir]/[@id=soprano] { … } % XPATH
>
> %% find the context where the rehearsalMark property is defined
> \context [rehearsalMark] { … } % CSS
> \context [@rehearsalMark] { … } % XPATH
> —
> Dan
The syntax appears not to be a good match to LilyPond even though the
concept may be considered fitting.
--
David Kastrup
- Context paths (and the Edition Engraver), Dan Eble, 2020/01/19
- Re: Context paths (and the Edition Engraver), David Kastrup, 2020/01/20
- Re: Context paths (and the Edition Engraver), Kieren MacMillan, 2020/01/21
- Re: Context paths (and the Edition Engraver), Jan-Peter Voigt, 2020/01/21
- Re: Context paths (and the Edition Engraver), Kieren MacMillan, 2020/01/21
- Re: Context paths (and the Edition Engraver), Dan Eble, 2020/01/21
- Re: Context paths (and the Edition Engraver),
David Kastrup <=
- Re: Context paths (and the Edition Engraver), Dan Eble, 2020/01/21
- Re: Context paths (and the Edition Engraver), David Kastrup, 2020/01/21
- Re: Context paths (and the Edition Engraver), Dan Eble, 2020/01/21
- Re: Context paths (and the Edition Engraver), David Kastrup, 2020/01/21
- Re: Context paths (and the Edition Engraver), Jan-Peter Voigt, 2020/01/22
- Re: Context paths (and the Edition Engraver), Kieren MacMillan, 2020/01/22
- Re: Context paths (and the Edition Engraver), Dan Eble, 2020/01/21
- Re: Context paths (and the Edition Engraver), Carl Sorensen, 2020/01/21
- Re: Context paths (and the Edition Engraver), Dan Eble, 2020/01/21
- Re: Context paths (and the Edition Engraver), Kieren MacMillan, 2020/01/21