Issue 635 in lilypond: PDF automatic deletion is unconvenient on GNU/Linux

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Comment #16 on issue 635 by wbsoft: PDF automatic deletion is unconvenient  
on GNU/Linux
http://code.google.com/p/lilypond/issues/detail?id=635

That would be a nice idea. I don't know how to code that unfortunately. The  
file
would not need to be deleted in scm/backend-library.scm, but GhostScript is  
the one
that's going to write to the output PDF. So LilyPond should then just call  
gs and is
that fails with some 'cant write to output pdf' error, delete the PDF file  
and then
try again.  But that's hairy too, because there could be other reasons for  
failing to
write to a file, besides it being opened by another application...

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