Re: Issue 2067 in lilypond: Patch: Give \displayLilyMusic and \displayMusic optional port arguments.

[lilypond]

Comment #7 on issue 2067 by address@hidden: Patch: Give \displayLilyMusic  
and \displayMusic optional port arguments.
http://code.google.com/p/lilypond/issues/detail?id=2067

Hey,

Just got through thinking about this - there are several times when, while  
debugging Scheme code, I'll include a `format' statement that'll print a  
smob.  Then, at the exit of the program, I'll get a Parsed object should be  
dead message.

I don't know much about these, but I remember when I was creating  
unpure-pure-containers, Neil got a version of my patch to segfault because  
I hadn't properly defined the string-ation of these containers.  So using  
`format' (which I believe both of these methods do indirectly (or  
directly)) can cause this sorta problem.

This is not to say that I won't investigate the issue on my side, but  
rather that one thing that you can do while I wait for my time to free up  
is, in include/smobs.hh, try to call scm_display or something of that ilk  
to make the warning message more robust.  If the parsed object is something  
is consistently the same type of object, then there may be a problem with  
the way its smobitude is coded.

Cheers,
MS