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