It's your configuration slighty modified at the top, with commands now in quotes.

etc-update.conf (text/plain), 790 bytes, created by Alec Warner on 2005-01-06 20:45:23 UTC

mode="0"
eu_automerge=yes # Whether trivial/comment changes should be automerged

## == Commands
rm_opts="-i"  # arguments for "rm"
mv_opts="-i"  # arguments for "mv"
cp_opts="-i"  # arguments for "cp"

## == Tools
diff_command="vim -d %file1 %file2"             # diff: vimdiff 
(default="diff -uN %file1 %file2")
using_editor=1                                # ???
pager=""      # pager for $diff_command, see NOTE_2 (default="less")
merge_command="sdiff -s -o %merged %orig %new"  # merge, see NOTE_1


# NOTE_1: Editors such as vim/vimdiff are not usable for the merge_command
#         because it is not known what filenames the produced files have
#         (the user can choose while using those programs)
# NOTE_2: Make sure pager is set to "" when using an editor as diff_command!