1	#!/usr/bin/env bash
2	#
3	# Corner cases in var sub. Maybe rename this file.
4
5	### Bad var sub
6	echo ${a|}
7	# stdout-json: ""
8	# status: 2
9	# OK bash/mksh status: 1
10
11	### Braced block inside ${}
12	# NOTE: This doesn't work in bash. The nested {} aren't parsed. It works in
13	# dash though!
14	# bash - line 1: syntax error near unexpected token `)'
15	# bash - line 1: `echo ${foo:-$({ which ls; })}'
16	# tag: bash-bug
17	echo ${foo:-$({ which ls; })}
18	# stdout: /bin/ls
19	# BUG bash stdout-json: ""
20	# BUG bash status: 2
21
22	### Nested ${}
23	bar=ZZ
24	echo ${foo:-${bar}}
25	# stdout: ZZ
26
27	### Filename redirect with "$@"
28	# bash - ambiguous redirect -- yeah I want this error
29	# - But I want it at PARSE time? So is there a special DollarAtPart?
30	# MultipleArgsPart?
31	# mksh - tries to create '_tmp/var-sub1 _tmp/var-sub2'
32	# dash - tries to create '_tmp/var-sub1 _tmp/var-sub2'
33	func() {
34	echo hi > "$@"
35	}
36	func _tmp/var-sub1 _tmp/var-sub2
37	# status: 1
38	# OK dash status: 2
39
40	### Filename redirect with split word
41	# bash - runtime error, ambiguous redirect
42	# mksh and dash - they will NOT apply word splitting after redirect, and write
43	# to '_tmp/1 2'
44	# Stricter behavior seems fine.
45	foo='_tmp/1 2'
46	rm '_tmp/1 2'
47	echo hi > $foo
48	test -f '_tmp/1 2' && cat '_tmp/1 2'
49	# status: 0
50	# stdout: hi
51	# OK bash status: 1
52	# OK bash stdout-json: ""
53
54	### Descriptor redirect to bad "$@"
55	# All of them give errors:
56	# dash - bad fd number, parse error?
57	# bash - ambiguous redirect
58	# mksh - illegal file descriptor name
59	set -- '2 3' 'c d'
60	echo hi 1>& "$@"
61	# status: 1
62	# OK dash status: 2
63
64	### Here doc with bad "$@" delimiter
65	# bash - syntax error
66	# dash - syntax error: end of file unexpected
67	# mksh - runtime error: here document unclosed
68	#
69	# What I want is syntax error: bad delimiter!
70	#
71	# This means that "$@" should be part of the parse tree then? Anything that
72	# involves more than one token.
73	func() {
74	cat << "$@"
75	hi
76	1 2
77	}
78	func 1 2
79	# status: 2
80	# stdout-json: ""
81	# OK mksh status: 1