Re: Crash with \repeat ... \alternative and \remove "Bar_engraver" on2.17.26

[Phil Holmes]

----- Original Message ----- 
From: "Jim Long" <address@hidden>
To: <address@hidden>
Sent: Monday, November 11, 2013 4:30 AM
Subject: Crash with \repeat ... \alternative and \remove "Bar_engraver" 
on2.17.26


> I was researching a method for defining form (repeats, rehearsal
> marks, etc.) and line breaking in separate, hidden parallel staff
> contexts, and ran across the following crash:
>
> GNU LilyPond 2.17.26
> Processing `bug6-crash.ly'
> Parsing...
> Interpreting music...
> Preprocessing graphical objects...
> Finding the ideal number of pages...
> Fitting music on 1 page...
> Drawing 
> systems.../usr/local/share/lilypond/2.17.26/scm/bar-line.scm:913:28: In 
> procedure ly:grob-array-length in expression (ly:grob-array-length 
> bar-array):
> /usr/local/share/lilypond/2.17.26/scm/bar-line.scm:913:28: Wrong type 
> argument in position 1 (expecting Grob_array): ()
>
> Can someone please determine whether the latest beta still does
> this, and if so, whether a bug report is warranted?
>
> The interaction appears to be between '\remove "Bar_engraver"' and
> the alternative ending.  Remove either one and the problem goes away.
>
> Thank you,
>
> Jim


It looks like this occurred between 2.17.4 and 2.17.9 (I don't have the 
intermediate versions) and I believe a bug report is definitely warranted. 
This would appear to be a Critical Regression.

--
Phil Holmes