fatal "no gummiboot entries found in \"$entries_dir\""
# Get the default entry name
-default_entry="$(cat "$conf_file" | sed -n -e 's/[ \t]*default[ \t]\+\(.\+\)[ \t]*/\1.conf/p')"
+default_entry="$(cat "$conf_file" | sed -n -e 's/^[ \t]*default[ \t]\+\(.\+\)[ \t]*/\1.conf/p')"
[ -n "$default_entry" ] || \
fatal "cannot find the default entry in \"$conf_file\""
[ "$(printf "%s\n" "$default_entry" | wc -l)" -eq "1" ] || \
# Update the default entry
newest_kernel="$(printf "%s" "$kernels" | head -n1)"
-sed -i -e "s/[ \t]*default[ \t]\+.*/default $newest_kernel/" "$conf_file"
+sed -i -e "s/^[ \t]*default[ \t]\+.*/default $newest_kernel/" "$conf_file"
# Remove gummiboot entries for non-existing kernels
printf "%s\n" "$entries" | while IFS= read -r entry; do