Hi, while working on #5640 "Fix regtests about Footnote" https://sourceforge.net/p/testlilyissues/issues/5640/ I noticed input/regression/footnote-auto-numbering-vertical-order.ly is broken.
The problem is that since #1773 "Add Footnote_engraver to Score context" https://sourceforge.net/p/testlilyissues/issues/1773/ \override FootnoteItem.numbering-assertion-function always fails now, if correctly applied to Score _and_ more than one FootnoteItem happen at the same time, p.e.in simultaneous music. Short example: #(define (make-footnote-numbering-assertion-function n) (lambda (x) (if (not (= n x)) (ly:warning (_ "Expecting number ~a, got ~a") n x)))) #(set-default-paper-size "a6") << \new Staff { \once \override Score.FootnoteItem.numbering-assertion-function = #(lambda (grob) (make-footnote-numbering-assertion-function 0)) \footnote #'(1 . -1) "1. footnote" b } \new Staff { \once \override Score.FootnoteItem.numbering-assertion-function = #(lambda (grob) (make-footnote-numbering-assertion-function 1)) \footnote #'(1 . -1) "2. footnote" b } >> The numbering-assertion-function receives two values 0 and 1. Thus it can't assert any fix value anymore. Currently I can't find a way out. Suggestions/hints? Background: numbering-assertion-function was implemented with commit 5ac2664c2207e8dfa1734d786e5c7b214b275521 Author: Mike Solomon <m...@apollinemike.com> Date: Fri Dec 2 08:06:13 2011 +0100 Adds a numbering-assertion-function property to the footnote grob. This allows the footnote regtests to verify that the footnotes are being numbered in the correct order. for 2.15.21 Moving Footnote_engraver with: commit 3f0f59297670174562e7d66ae7dd8d73a04be6f8 Author: David Kastrup <d...@gnu.org> Date: Fri May 25 18:41:46 2012 +0200 Issue 1773: move Footnote_engraver to Score context for 2.15.40 The problem remained undetected because the numbering-assertion-function was not called with Score-context, so it didn't work at all. The regtest does not rely on a visual diff, but on a triggered ly:error, which then never happened anymore. The regtest footnote-auto-numbering.ly uses numbering-assertion-function as well, but without simultaneous Footnotes, thus it works there. Cheers, Harm