1	#!/bin/bash
2	#
3	# Tests for pipelines.
4	# NOTE: Grammatically, ! is part of the pipeline:
5	#
6	# pipeline : pipe_sequence
7	# | Bang pipe_sequence
8
9	### Brace group in pipeline
10	{ echo one; echo two; } | tac
11	# stdout-json: "two\none\n"
12
13	### For loop in pipeline
14	for w in one two; do
15	echo $w
16	done | tac
17	# stdout-json: "two\none\n"
18
19	### Exit code is last status
20	expr $0 : '.*/osh$' && exit 99 # Disabled because of spec-runner.sh issue
21	echo a | egrep '[0-9]+'
22	# status: 1
23
24	### |&
25	stdout_stderr.py |& cat
26	# stdout-json: "STDERR\nSTDOUT\n"
27	# N-I dash/mksh stdout-json: ""
28
29	### ! turns non-zero into zero
30	! $SH -c 'exit 42'; echo $?
31	# stdout: 0
32	# status: 0
33
34	### ! turns zero into 1
35	! $SH -c 'exit 0'; echo $?
36	# stdout: 1
37	# status: 0
38
39	### ! in if
40	if ! echo hi; then
41	echo TRUE
42	else
43	echo FALSE
44	fi
45	# stdout-json: "hi\nFALSE\n"
46	# status: 0
47
48	### ! with ||
49	! echo hi || echo FAILED
50	# stdout-json: "hi\nFAILED\n"
51	# status: 0
52
53	### ! with { }
54	! { echo 1; echo 2; } || echo FAILED
55	# stdout-json: "1\n2\nFAILED\n"
56	# status: 0
57
58	### ! with ( )
59	! ( echo 1; echo 2 ) || echo FAILED
60	# stdout-json: "1\n2\nFAILED\n"
61	# status: 0
62
63	### ! is not a command
64	v='!'
65	$v echo hi
66	# status: 127
67