1	#
2	# Corner cases in var sub. Maybe rename this file.
3
4	#### Bad var sub
5	echo ${a&}
6	## stdout-json: ""
7	## status: 2
8	## OK bash/mksh status: 1
9
10	#### Braced block inside ${}
11	# NOTE: This bug was in bash 4.3 but fixed in bash 4.4.
12	echo ${foo:-$({ which ls; })}
13	## stdout: /bin/ls
14
15	#### Nested ${}
16	bar=ZZ
17	echo ${foo:-${bar}}
18	## stdout: ZZ
19
20	#### Filename redirect with "$@"
21	# bash - ambiguous redirect -- yeah I want this error
22	# - But I want it at PARSE time? So is there a special DollarAtPart?
23	# MultipleArgsPart?
24	# mksh - tries to create '_tmp/var-sub1 _tmp/var-sub2'
25	# dash - tries to create '_tmp/var-sub1 _tmp/var-sub2'
26	fun() {
27	echo hi > "$@"
28	}
29	fun _tmp/var-sub1 _tmp/var-sub2
30	## status: 1
31	## OK dash status: 2
32
33	#### Filename redirect with split word
34	# bash - runtime error, ambiguous redirect
35	# mksh and dash - they will NOT apply word splitting after redirect, and write
36	# to '_tmp/1 2'
37	# Stricter behavior seems fine.
38	foo='_tmp/1 2'
39	rm '_tmp/1 2'
40	echo hi > $foo
41	test -f '_tmp/1 2' && cat '_tmp/1 2'
42	## status: 0
43	## stdout: hi
44	## OK bash status: 1
45	## OK bash stdout-json: ""
46
47	#### Descriptor redirect to bad "$@"
48	# All of them give errors:
49	# dash - bad fd number, parse error?
50	# bash - ambiguous redirect
51	# mksh - illegal file descriptor name
52	set -- '2 3' 'c d'
53	echo hi 1>& "$@"
54	## status: 1
55	## OK dash status: 2
56
57	#### Here doc with bad "$@" delimiter
58	# bash - syntax error
59	# dash - syntax error: end of file unexpected
60	# mksh - runtime error: here document unclosed
61	#
62	# What I want is syntax error: bad delimiter!
63	#
64	# This means that "$@" should be part of the parse tree then? Anything that
65	# involves more than one token.
66	fun() {
67	cat << "$@"
68	hi
69	1 2
70	}
71	fun 1 2
72	## status: 2
73	## stdout-json: ""
74	## OK mksh status: 1