[Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #4582 Document tweaking of StaffSymbol and LedgerLineSpanner

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• status: Fixed --> Verified
• assigned_to: pkx166h --> nobody
• Comment:

It’s strange that I can’t find the commit via searching for the committish. But it is there: http://git.savannah.gnu.org/gitweb/?p=lilypond.git;a=commit;h=b6e323a2f6fdac2266a659acf6da008957f0c936. So – verified.

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[issues:#4582] Document tweaking of StaffSymbol and LedgerLineSpanner

Status: Verified
Labels: FIxed_2_19_34
Created: Sun Aug 30, 2015 09:06 PM UTC by Simon Albrecht
Last Updated: Mon Dec 07, 2015 11:47 AM UTC
Owner: nobody

It regularly causes confusion that individual ledger line stacks can’t simply be tweaked. I think this should be documented better, but it isn’t easy to find the right place for that. I’d suggest the following:

In LM 4.1.2 http://lilypond.org/doc/v2.19/Documentation/learning/objects-and-interfaces, at the end of the fourth paragraph, (i.e. in Documentation/learning/tweaks.itely, at the end of line 108) insert
"Spanners cannot be tweaked after their creation. This includes @code{StaffSymbol} and @code{LedgerLineSpanner}, which both continue throughout the score except if they are terminated by @code{\stopStaff} and newly created using @code{\startStaff}."

Although perhaps the last half-sentence should be replaced by a reference to a more detailed explanation (necessary anyway), e.g. in NR 5.3.1 http://lilypond.org/doc/v2.19/Documentation/notation/overview-of-modifying-properties (or elsewhere in 5.3).

Another theoretical possibility, which I would deem most helpful to users who encounter the problem, would be a remark at the top of the IR page for LedgerLineSpanner. But unfortunately (?) that would require major changes in the build system, IIUC.

Should we mark this BLOCKEDON: Issue [#3949]?

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