bug#9574: data-loss with --batch: ignored write failure

[Glenn Morris]

Andreas Schwab wrote:

> Fixed.

Not the --version part, FWIW.

./src/emacs -Q --version > /dev/full ; echo $?
0

./src/emacs -Q --help > /dev/full ; echo $?
0

cf

ls --version > /dev/full ; echo $?
ls: write error: No space left on device
2


Also:
./src/emacs -Q --batch --eval '(print "important")' > /dev/full

does indeed now return status 1, but no error message.