Re: Custom MMR Range engraver problem under 2.19.83

[Thomas Morley]

Am Mo., 6. Jan. 2020 um 02:22 Uhr schrieb David Kastrup <address@hidden>:
>
> David Kastrup <address@hidden> writes:
>
> > Thomas Morley <address@hidden> writes:
> >
> >> Am Mo., 6. Jan. 2020 um 00:53 Uhr schrieb Malte Meyn <address@hidden>:
> >>>
> >>>
> >>>
> >>> Am 06.01.20 um 00:02 schrieb Craig Dabelstein:
> >>> > Hi all,
> >>> >
> >>> > I've been using the custom mmr-range-engraver (from this thread:
> >>> > https://lists.gnu.org/archive/html/lilypond-user/2016-02/msg00505.html).
> >>> > It was working perfectly under 2.19.82 but won't work under 2.19.83. No
> >>> > error messages at all. Just mmr bar numbers not displaying. Has anyone
> >>> > else experienced this?
> >>> >
> >>> > Craig
> >>>
> >>> Could you please give a minimal working example (or at least link to the
> >>> message containing a compilable code, not to the start of the thread)?
> >>>
> >>
> >> It's
> >> https://lists.gnu.org/archive/html/lilypond-user/2016-02/msg00543.html
> >>
> >> A minimal for the problem:
> >>
> >> \markup
> >> \center-column {
> >>    foo
> >>    \translate #'(0 . 3)
> >>    \with-dimensions #empty-interval #empty-interval
> >>    bar
> >> }
> >>
> >> With 2.19.82 "bar" is printed, it completely disappears with 2.19.83
> >> No clue what happens and why.
> >> Probably a bug, to tired to do further research, thoug.
> >
> > Bisecting.
>
> 06be909202d2ced6e651e4420bc8068eafae023e is the first bad commit
> commit 06be909202d2ced6e651e4420bc8068eafae023e
> Author: Thomas Morley <address@hidden>
> Date:   Sat May 26 23:45:55 2018 +0200
>
>     Issue 5331 Let general-column deal reliable with empty args
>
>     Previously an args-list of empty-stencils issued a programming error:
>       Improbable offset for stencil: -inf staff space
>     This patch removes empty stencils from the args-list.
>     If args-list is empty, an empty stencil is returned.
>
> :040000 040000 1f7b4bbaa3a3fb2614daa9b9a58ac279aded4998 
> 2a55b8acbf49de4695c9afd37f1d60768084d8e1 M      scm
>
>
> --
> David Kastrup

Ok, thanks for bisecting.
I'll rethink the problem. Not sure if I can propose anythink before
Salzburg, though.

Cheers,
  Harm