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Subject: lua 'grub.run' does not return message text
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When I run

err,msg = grub.run("ls")

only the variable err is filled with the exit code.
msg is still nil .. I saw documentation that grub.run is supposed to 
return the output in the second variable.

I use lua from grub-extras repository
http://bzr.savannah.gnu.org/lh/grub-extras/
checked out yesterday.

What am I doing wrong?

Thanks .. ede