1	#!/bin/bash
2	#
3	# Tests for the args in:
4	#
5	# ${foo:-}
6	#
7	# I think the weird single quote behavior is a bug, but everyone agrees. It's
8	# a consequence of quote removal.
9	#
10	# WEIRD: single quoted default, inside double quotes. Oh I guess this is
11	# because double quotes don't treat single quotes as special?
12	#
13	# OK here is the issue. If we have ${} bare, then the default is parsed as
14	# LexState.OUTER. If we have "${}", then it's parsed as LexState.DQ. That
15	# makes sense I guess. Vim's syntax highlighting is throwing me off.
16
17	### :-
18	empty=''
19	argv ${empty:-a} ${Unset:-b}
20	# stdout: ['a', 'b']
21
22	### -
23	empty=''
24	argv ${empty-a} ${Unset-b}
25	# empty one is still elided!
26	# stdout: ['b']
27
28	### Inner single quotes
29	argv ${Unset:-'b'}
30	# stdout: ['b']
31
32	### Inner single quotes, outer double quotes
33	# This is the WEIRD ONE. Single quotes appear outside. But all shells agree!
34	argv "${Unset:-'b'}"
35	# stdout: ["'b'"]
36
37	### Inner double quotes
38	argv ${Unset:-"b"}
39	# stdout: ['b']
40
41	### Inner double quotes, outer double quotes
42	argv "${Unset-"b"}"
43	# stdout: ['b']
44
45	### Multiple words: no quotes
46	argv ${Unset:-a b c}
47	# stdout: ['a', 'b', 'c']
48
49	### Multiple words: no outer quotes, inner single quotes
50	argv ${Unset:-'a b c'}
51	# stdout: ['a b c']
52
53	### Multiple words: no outer quotes, inner double quotes
54	argv ${Unset:-"a b c"}
55	# stdout: ['a b c']
56
57	### Multiple words: outer double quotes, no inner quotes
58	argv "${Unset:-a b c}"
59	# stdout: ['a b c']
60
61	### Multiple words: outer double quotes, inner double quotes
62	argv "${Unset:-"a b c"}"
63	# stdout: ['a b c']
64
65	### Multiple words: outer double quotes, inner single quotes
66	argv "${Unset:-'a b c'}"
67	# WEIRD ONE.
68	# stdout: ["'a b c'"]
69
70
71	### Var with multiple words: no quotes
72	var='a b c'
73	argv ${Unset:-$var}
74	# stdout: ['a', 'b', 'c']
75
76	### Multiple words: no outer quotes, inner single quotes
77	var='a b c'
78	argv ${Unset:-'$var'}
79	# stdout: ['$var']
80
81	### Multiple words: no outer quotes, inner double quotes
82	var='a b c'
83	argv ${Unset:-"$var"}
84	# stdout: ['a b c']
85
86	### Multiple words: outer double quotes, no inner quotes
87	var='a b c'
88	argv "${Unset:-$var}"
89	# stdout: ['a b c']
90
91	### Multiple words: outer double quotes, inner double quotes
92	var='a b c'
93	argv "${Unset:-"$var"}"
94	# stdout: ['a b c']
95
96	### Multiple words: outer double quotes, inner single quotes
97	# WEIRD ONE.
98	#
99	# I think I should just disallow any word with single quotes inside double
100	# quotes.
101	var='a b c'
102	argv "${Unset:-'$var'}"
103	# stdout: ["'a b c'"]
104
105
106
107	### No outer quotes, Multiple internal quotes
108	# It's like a single command word. Parts are joined directly.
109	var='a b c'
110	argv ${Unset:-A$var " $var"D E F}
111	# stdout: ['Aa', 'b', 'c', ' a b cD', 'E', 'F']
112
113
114
115	### Strip a string with single quotes, unquoted
116	foo="'a b c d'"
117	argv ${foo%d\'}
118	# stdout: ["'a", 'b', 'c']
119
120	### Strip a string with single quotes, double quoted
121	foo="'a b c d'"
122	argv "${foo%d\'}"
123	# stdout: ["'a b c "]
124
125	### Strip a string with single quotes, double quoted, with unescaped '
126	# We're in a double quoted context, so we should be able to use a regular
127	# single quote. This is very much the case with :-.
128	foo="'a b c d'"
129	argv "${foo%d'}"
130	# stdout: ["'a b c "]
131	# BUG bash/mksh stdout-json: ""
132
133	### The string to strip is space sensitive
134	foo='a b c d'
135	argv "${foo%c d}" "${foo%c d}"
136	# stdout: ['a b ', 'a b c d']
137
138	### The string to strip can be single quoted, outer is double quoted
139	foo='a b c d'
140	argv "${foo%'c d'}" "${foo%'c d'}"
141	# stdout: ['a b ', 'a b c d']
142	# BUG dash stdout: ['a b c d', 'a b c d']
143
144	### The string to strip can be single quoted, outer is unquoted
145	foo='a b c d'
146	argv ${foo%'c d'} ${foo%'c d'}
147	# stdout: ['a', 'b', 'a', 'b', 'c', 'd']