1	#!/bin/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	### Filename redirect with "$@"
23	# bash - ambiguous redirect -- yeah I want this error
24	# - But I want it at PARSE time? So is there a special DollarAtPart?
25	# MultipleArgsPart?
26	# mksh - tries to create '_tmp/var-sub1 _tmp/var-sub2'
27	# dash - tries to create '_tmp/var-sub1 _tmp/var-sub2'
28	func() {
29	echo hi > "$@"
30	}
31	func _tmp/var-sub1 _tmp/var-sub2
32	# status: 1
33	# OK dash status: 2
34
35	### Filename redirect with split word
36	# bash - runtime error, ambiguous redirect
37	# mksh and dash - they will NOT apply word splitting after redirect, and write
38	# to '_tmp/1 2'
39	# Stricter behavior seems fine.
40	foo='_tmp/1 2'
41	rm '_tmp/1 2'
42	echo hi > $foo
43	test -f '_tmp/1 2' && cat '_tmp/1 2'
44	# status: 0
45	# stdout: hi
46	# OK bash status: 1
47	# OK bash stdout-json: ""
48
49	### Descriptor redirect to bad "$@"
50	# All of them give errors:
51	# dash - bad fd number, parse error?
52	# bash - ambiguous redirect
53	# mksh - illegal file descriptor name
54	set -- '2 3' 'c d'
55	echo hi 1>& "$@"
56	# status: 1
57	# OK dash status: 2
58
59	### Here doc with bad "$@" delimiter
60	# bash - syntax error
61	# dash - syntax error: end of file unexpected
62	# mksh - runtime error: here document unclosed
63	#
64	# What I want is syntax error: bad delimiter!
65	#
66	# This means that "$@" should be part of the parse tree then? Anything that
67	# involves more than one token.
68	func() {
69	cat << "$@"
70	hi
71	1 2
72	}
73	func 1 2
74	# status: 2
75	# stdout-json: ""
76	# OK mksh status: 1
77