merging lily .ps files

[Laura Conrad]

I just attempted to merge several files created by ly2dvi and dvips
using psmerge from the psutils package.  It didn't work; gv says:

Error: /dictstackunderflow in --end--
Operand stack:

Execution stack:
   %interp_exit   .runexec2   --nostringval--   --nostringval--   
--nostringval--   2   %stopped_push   --nostringval--   2   3   %oparray_pop   
--nostringval--   --nostringval--   false   1   %stopped_push   1   3   
%oparray_pop   1   3   %oparray_pop   .runexec2   --nostringval--   
--nostringval--   --nostringval--   2   %stopped_push   --nostringval--   
--nostringval--   --nostringval--
Dictionary stack:
   --dict:915/941(G)--   --dict:0/20(G)--   --dict:193/2

Does anyone know enough postscript to explain why this is happening?

The psmerge man page says:

       Psmerge merges PostScript documents into  a  single  docu­
       ment.  It  only  works  in the specific case the the files
       were created using the same  application,  with  the  same
       device  setup  and  resources  (fonts, procsets, patterns,
       files, etc) loaded.

I would have expected this to be true of these postscript files.

Alternatively, has anyone worked out another automated procedure for
concatenating lilypond output?

-- 
Laura (mailto:address@hidden , http://www.laymusic.org/ )
(617) 661-8097  fax: (801) 365-6574 
233 Broadway, Cambridge, MA 02139