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 if ! $base_present
24 then
25 cp -- "$LOCAL" "$BASE"
26 create_virtual_base "$BASE" "$REMOTE"
27 fi
28 "$merge_tool_path" "$BASE" "$REMOTE" "$LOCAL" "$MERGED"
29}
30
31create_empty_file () {
32 empty_file="${TMPDIR:-/tmp}/git-difftool-p4merge-empty-file.$$"
33 >"$empty_file"
34
35 printf "%s" "$empty_file"
36}