### Test xapply --max-replace-args
2 1 0
5 4 3
7 6
### Test -N
1 2 3
4 5
### Test -N with 0
0 1 2
3 4 5
6 7
### Test :::: on nonexistent
parallel: Cannot open nonexistent
### Test :::: two files
1 5
2 6
3 7
4 8
5 9
6 10
7 11
8 12
9 13
10 14
15
### Test -d, ::::
a1 5b
a2 6b
a3 7b
a
 8
b
### Test -d, :::: one file too much
a1 5b
a2 6b
a3 7b
a
 8
b
### Bug: did not quote
> b
### Quote test triplet 1
echo a
a
echo b
b
echo a
a
echo b
b
echo a
a
echo b
b
### Quote test triplet 2
echo echo\ a
echo a
echo echo\ b
echo b
echo echo\ a
echo a
echo echo\ b
echo b
echo echo\ a
echo a
echo echo\ b
echo b
### Quoting if there is a command and 2 arg files
echo echo\ a echo\ b
echo a echo b
### Quoting if there is a command and 2 arg files of uneven length
echo echo\ a echo\ b
echo a echo b
echo a1 
a1
### Quoting if there is no command and 2 arg files
echo a echo b
a echo b
### Quoting if there is no command and 2 arg files of uneven length
echo a echo b
a echo b
echo a1 
a1