On Fri, 22 Jun 2012 08:21:02 -0700, Janek Warchoł <janek.lilypond@gmai...> wrote:

> On Fri, Jun 22, 2012 at 7:41 AM,  <k-ohara5a5a@oco....> wrote:
>> This fails an assertion in scm_or_str2symbol, so I had to recompile with
>> NDEBUG
>
> I'm sorry, but i don't recognize what failing an assertion in
> scm_or_str2symbol could mean here.

Neither did I.
Run your ..../configure with --disable-optimising so that when you 'make' you will have assert() enabled so you can see these debugging checks.

Searching for the definition of scm_or_str2smbol(), it is in lily-guile-macros.hh
   48 /* this lets us "overload" macros such as get_property to take
   49    symbols as well as strings */
   50 inline SCM
   51 scm_or_str2symbol (char const *c) { return scm_from_locale_symbol (c); }
   52
   53 inline SCM
   54 scm_or_str2symbol (SCM s)
   55 {
   56   assert (scm_is_symbol (s));
   57   return s;
   58 }
so it looks like your use of
   SCM which_grob_extent = SCM_EOL; ... get_property (which_grob_extent)
was not considered valid use of get_property when it was designed.


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