1	#!/bin/bash
2
3	### command -v
4	myfunc() { echo x; }
5	command -v echo
6	echo $?
7	command -v myfunc
8	echo $?
9	command -v nonexistent # doesn't print anything
10	echo $?
11	command -v for
12	echo $?
13	## STDOUT:
14	echo
15	0
16	myfunc
17	0
18	1
19	for
20	0
21	## OK dash STDOUT:
22	echo
23	0
24	myfunc
25	0
26	127
27	for
28	0
29	## END
30
31	### command -v with multiple names
32	# ALL FOUR SHELLS behave differently here!
33	#
34	# bash chooses to swallow the error! We agree with zsh if ANY word lookup
35	# fails, then the whole thing fails.
36
37	myfunc() { echo x; }
38	command -v echo myfunc ZZZ for
39	echo status=$?
40
41	## STDOUT:
42	echo
43	myfunc
44	for
45	status=1
46	## BUG bash STDOUT:
47	echo
48	myfunc
49	for
50	status=0
51	## BUG dash STDOUT:
52	echo
53	status=0
54	## OK mksh STDOUT:
55	echo
56	myfunc
57	status=1
58	## END