1	#!/bin/bash
2
3	### Leading redirect
4	echo hello >tests/hello.txt # temporary fix
5	<tests/hello.txt cat
6	# stdout: hello
7
8	### No command
9	# Hm this is valid in bash and dash. It's parsed as an assigment with a
10	# redirect, which doesn't make sense. But it's a mistake, and should be a W2
11	# warning for us.
12	FOO=bar 2>/dev/null
13
14	### Redirect in subshell
15	FOO=$(echo foo 1>&2)
16	echo $FOO
17	# stdout:
18	# stderr: foo
19
20	### Redirect in assignment
21	# dash captures stderr to a file here, which seems correct. Bash doesn't and
22	# just lets it go to actual stderr.
23	# For now we've settled on bash behavior, for compatibility?
24	FOO=$(echo foo 1>&2) 2>$TMP/no-command.txt
25	echo FILE=
26	cat $TMP/no-command.txt
27	echo "FOO=$FOO"
28	# OK dash/mksh stdout-json: "FILE=\nfoo\nFOO=\n"
29	# stdout-json: "FILE=\nFOO=\n"
30
31	### Redirect in function body.
32	# Wow this is interesting, didn't know about it.
33	func() { echo hi; } 1>&2; func
34	# stderr: hi
35
36	### Descriptor redirect with spaces
37	# Hm this seems like a failure of lookahead! The second thing should look to a
38	# file-like thing.
39	# I think this is a posix issue.
40	# tag: posix-issue
41	echo one 1>&2
42	echo two 1 >&2
43	echo three 1>& 2
44	# stderr-json: "one\ntwo 1\nthree\n"
45
46	### Filename redirect with spaces
47	# This time 1 *is* a descriptor, not a word. If you add a space between 1 and
48	# >, it doesn't work.
49	echo two 1> $TMP/file-redir1.txt
50	cat $TMP/file-redir1.txt
51	# stdout: two
52
53	### Quoted filename redirect with spaces
54	# POSIX makes node of this
55	echo two \1 > $TMP/file-redir2.txt
56	cat $TMP/file-redir2.txt
57	# stdout: two 1
58
59	### Descriptor redirect with filename
60	# Should be a syntax error, but bash allows this.
61	echo one 1>&$TMP/nonexistent-filename__
62	# status: 2
63	# stdout-json: ""
64	# OK mksh status: 1
65	# BUG bash status: 0
66
67	### redirect for loop
68	for i in $(seq 3)
69	do
70	echo $i
71	done > $TMP/redirect-for-loop.txt
72	cat $TMP/redirect-for-loop.txt
73	# stdout-json: "1\n2\n3\n"
74
75	### Prefix redirect for loop -- not allowed
76	>$TMP/redirect2.txt for i in $(seq 3)
77	do
78	echo $i
79	done
80	cat $TMP/redirect2.txt
81	# status: 2
82	# OK mksh status: 1
83
84	### Block redirect
85	# Suffix works, but prefix does NOT work.
86	# That comes from '| compound_command redirect_list' in the grammar!
87	{ echo block-redirect; } > $TMP/br.txt
88	cat $TMP/br.txt | wc -c
89	# stdout: 15
90
91	### Redirect echo to stderr, and then redirect all of stdout somewhere.
92	{ echo foo 1>&2; echo 012345789; } > $TMP/block-stdout.txt
93	cat $TMP/block-stdout.txt | wc -c
94	# stderr: foo
95	# stdout: 10
96
97	### Redirect in the middle of two assignments
98	FOO=foo >$TMP/out.txt BAR=bar printenv.py FOO BAR
99	tac $TMP/out.txt
100	# stdout-json: "bar\nfoo\n"
101
102	### Redirect in the middle of a command
103	f=$TMP/out
104	echo -n 1 2 '3 ' > $f
105	echo -n 4 5 >> $f '6 '
106	echo -n 7 >> $f 8 '9 '
107	echo -n >> $f 1 2 '3 '
108	echo >> $f -n 4 5 '6 '
109	cat $f
110	# stdout-json: "1 2 3 4 5 6 7 8 9 1 2 3 4 5 6 "
111
112	### Named file descriptor
113	exec {myfd}> $TMP/named-fd.txt
114	echo named-fd-contents >& $myfd
115	cat $TMP/named-fd.txt
116	# stdout: named-fd-contents
117	# N-I dash/mksh stdout-json: ""
118
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120