Taco Hoekwater wrote:
andrea valle wrote:
It's the same file but I commented out a part of the section
dedicated to importing and drawing little notes attached to
arrowlines between music fragments.
Everything not commented is now displayed: on my machine it seems to
be deterministic.
Ok, got it. There is a bug in mp-spec.mp (inside metafun). Because
of a wrapping number, it fails to recognize the fact that there are
embedded specials at all. Attached is an updated version of
mp-spec.mp.
The corrected definition of add_special_signal is:
vardef add_special_signal = % write the version number
if (length _global_specials_<>0) or (length _local_specials_ <>0) :
special ("%%MetaPostSpecials: 1.0 " & decimal _special_signal_ ) ;
fi ;
enddef ;
It now tests for "not equal to zero" instead of "larger than zero":
because of all the included files, the string _local_specials_ becomes
longer than the maximum number 'length' can return, so it returns
-32768 instead, and that is of course less than zero.
ok, patched.
i guess that only you could uncover this wrap-around bug -)
(btw, another funny mp issue is in opening a file for a second time
(probably due to the non explicit close))
Hans
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