1diff_cmd () {
2 empty_file=
3
4 # p4merge does not like /dev/null
5 if test "/dev/null" = "$LOCAL"
6 then
7 LOCAL="$(create_empty_file)"
8 fi
9 if test "/dev/null" = "$REMOTE"
10 then
11 REMOTE="$(create_empty_file)"
12 fi
13
14 "$merge_tool_path" "$LOCAL" "$REMOTE"
15
16 if test -n "$empty_file"
17 then
18 rm -f "$empty_file"
19 fi
20}
21
22merge_cmd () {
23 touch "$BACKUP"
24 $base_present || >"$BASE"
25 "$merge_tool_path" "$BASE" "$LOCAL" "$REMOTE" "$MERGED"
26 check_unchanged
27}
28
29create_empty_file () {
30 empty_file="${TMPDIR:-/tmp}/git-difftool-p4merge-empty-file.$$"
31 >"$empty_file"
32
33 printf "$empty_file"
34}