1
2	#### ~ expansion in assignment
3	HOME=/home/bob
4	a=~/src
5	echo $a
6	## stdout: /home/bob/src
7
8	#### ~ expansion in readonly assignment
9	# dash fails here!
10	# http://stackoverflow.com/questions/8441473/tilde-expansion-doesnt-work-when-i-logged-into-gui
11	HOME=/home/bob
12	readonly const=~/src
13	echo $const
14	## stdout: /home/bob/src
15	## BUG dash stdout: ~/src
16
17	#### No ~ expansion in dynamic assignment
18	HOME=/home/bob
19	binding='const=~/src'
20	readonly "$binding"
21	echo $const
22	## stdout: ~/src
23
24	#### No tilde expansion in word that looks like assignment but isn't
25	# bash and mksh mistakenly expand here!
26	# bash fixes this in POSIX mode (gah).
27	# http://lists.gnu.org/archive/html/bug-bash/2016-06/msg00001.html
28	HOME=/home/bob
29	echo x=~
30	## stdout: x=~
31	## BUG bash/mksh stdout: x=/home/bob
32
33	#### tilde expansion of word after redirect
34	HOME=$TMP
35	echo hi > ~/tilde1.txt
36	cat $HOME/tilde1.txt | wc -c
37	## stdout: 3
38	## status: 0
39
40	#### other user
41	echo ~nonexistent
42	## stdout: ~nonexistent
43	# zsh doesn't like nonexistent
44	## OK zsh stdout-json: ""
45	## OK zsh status: 1
46
47	#### ${undef:-~}
48	HOME=/home/bar
49	echo ${undef:-~}
50	echo ${HOME:+~/z}
51	echo "${undef:-~}"
52	echo ${undef:-"~"}
53	## STDOUT:
54	/home/bar
55	/home/bar/z
56	~
57	~
58	## END
59
60	#### ${x//~/~root}
61	HOME=/home/bar
62	x=~
63	echo ${x//~/~root}
64
65	# gah there is some expansion, what the hell
66	echo ${HOME//~/~root}
67
68	x=[$HOME]
69	echo ${x//~/~root}
70
71	## STDOUT:
72	/root
73	/root
74	[/root]
75	## END
76	## N-I dash status: 2
77	## N-I dash stdout-json: ""
78
79	#### x=foo:~ has tilde expansion
80	HOME=/home/bar
81	x=foo:~
82	echo $x
83	echo "$x" # quotes don't matter, the expansion happens on assignment?
84	x='foo:~'
85	echo $x
86
87	x=foo:~, # comma ruins it, must be /
88	echo $x
89
90	x=~:foo
91	echo $x
92
93	# no tilde expansion here
94	echo foo:~
95	## STDOUT:
96	foo:/home/bar
97	foo:/home/bar
98	foo:~
99	foo:~,
100	/home/bar:foo
101	foo:~
102	## END
103
104	#### a[x]=foo:~ has tilde expansion
105	case $SH in (dash|zsh) exit ;; esac
106
107	HOME=/home/bar
108	declare -a a
109	a[0]=foo:~
110	echo ${a[0]}
111
112	declare -A A
113	A['x']=foo:~
114	echo ${A['x']}
115
116	## STDOUT:
117	foo:/home/bar
118	foo:/home/bar
119	## END
120	## N-I dash/zsh stdout-json: ""
121
122	#### tilde expansion an assignment keyword
123	HOME=/home/bar
124	f() {
125	local x=foo:~
126	echo $x
127	}
128	f
129	## STDOUT:
130	foo:/home/bar
131	## END
132	## BUG dash STDOUT:
133	foo:~
134	## END
135
136	#### x=${undef-~:~}
137	HOME=/home/bar
138
139	x=~:${undef-~:~}
140	echo $x
141
142	# Most shells agree on a different behavior, but with the OSH parsing model,
143	# it's easier to agree with yash. bash disagrees in a different way
144
145	## OK bash STDOUT:
146	/home/bar:/home/bar:~
147	## END
148	## OK osh/yash STDOUT:
149	/home/bar:~:~
150	## END
151	## STDOUT:
152	/home/bar:/home/bar:/home/bar
153	## END
154
155	#### strict tilde
156	echo ~nonexistent
157
158	shopt -s strict_tilde
159	echo ~nonexistent
160
161	echo status=$?
162	## status: 1
163	## STDOUT:
164	~nonexistent
165	## END
166	## N-I bash/dash/mksh status: 0
167	## N-I bash/dash/mksh STDOUT:
168	~nonexistent
169	~nonexistent
170	status=0
171	## END
172	## OK zsh stdout-json: ""