1 #
2 # Test the length oeprator, which dash supports. Dash doesn't support most
3 # other ops.
4
5 #### String length
6 v=foo
7 echo ${#v}
8 ## stdout: 3
9
10 #### Unicode string length (UTF-8)
11 v=$'_\u03bc_'
12 echo ${#v}
13 ## stdout: 3
14 ## N-I dash stdout: 9
15 ## N-I mksh stdout: 4
16
17 #### Unicode string length (spec/testdata/utf8-chars.txt)
18 v=$(cat $REPO_ROOT/spec/testdata/utf8-chars.txt)
19 echo ${#v}
20 ## stdout: 7
21 ## N-I dash stdout: 13
22 ## N-I mksh stdout: 13
23
24 #### String length with incomplete utf-8
25 for num_bytes in 0 1 2 3 4 5 6 7 8 9 10 11 12 13; do
26 s=$(head -c $num_bytes $REPO_ROOT/spec/testdata/utf8-chars.txt)
27 echo ${#s}
28 done 2> $TMP/err.txt
29
30 grep 'warning:' $TMP/err.txt
31 true # exit 0
32
33 ## STDOUT:
34 0
35 1
36 2
37 -1
38 3
39 4
40 -1
41 -1
42 5
43 6
44 -1
45 -1
46 -1
47 7
48 [ stdin ]:3: warning: UTF-8 decode: Truncated bytes at offset 2 in string of 3 bytes
49 [ stdin ]:3: warning: UTF-8 decode: Truncated bytes at offset 5 in string of 6 bytes
50 [ stdin ]:3: warning: UTF-8 decode: Truncated bytes at offset 5 in string of 7 bytes
51 [ stdin ]:3: warning: UTF-8 decode: Truncated bytes at offset 9 in string of 10 bytes
52 [ stdin ]:3: warning: UTF-8 decode: Truncated bytes at offset 9 in string of 11 bytes
53 [ stdin ]:3: warning: UTF-8 decode: Truncated bytes at offset 9 in string of 12 bytes
54 ## END
55 # zsh behavior actually matches bash!
56 ## BUG bash/zsh stderr-json: ""
57 ## BUG bash/zsh STDOUT:
58 0
59 1
60 2
61 3
62 3
63 4
64 5
65 6
66 5
67 6
68 7
69 8
70 9
71 7
72 ## END
73 ## BUG dash/mksh stderr-json: ""
74 ## N-I dash/mksh STDOUT:
75 0
76 1
77 2
78 3
79 4
80 5
81 6
82 7
83 8
84 9
85 10
86 11
87 12
88 13
89 ## END
90
91 #### String length with invalid utf-8 continuation bytes
92 for num_bytes in 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14; do
93 s=$(head -c $num_bytes $REPO_ROOT/spec/testdata/utf8-chars.txt)$(echo -e "\xFF")
94 echo ${#s}
95 done 2> $TMP/err.txt
96
97 grep 'warning:' $TMP/err.txt
98 true
99
100 ## STDOUT:
101 -1
102 -1
103 -1
104 -1
105 -1
106 -1
107 -1
108 -1
109 -1
110 -1
111 -1
112 -1
113 -1
114 -1
115 -1
116 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 0 in string of 1 bytes
117 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 1 in string of 2 bytes
118 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 2 in string of 3 bytes
119 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 2 in string of 4 bytes
120 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 4 in string of 5 bytes
121 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 5 in string of 6 bytes
122 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 5 in string of 7 bytes
123 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 5 in string of 8 bytes
124 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 8 in string of 9 bytes
125 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 9 in string of 10 bytes
126 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 9 in string of 11 bytes
127 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 9 in string of 12 bytes
128 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 9 in string of 13 bytes
129 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 13 in string of 14 bytes
130 [ stdin ]:3: warning: UTF-8 decode: Bad encoding at offset 13 in string of 14 bytes
131 ## END
132 ## BUG bash/zsh stderr-json: ""
133 ## BUG bash/zsh STDOUT:
134 1
135 2
136 3
137 4
138 4
139 5
140 6
141 7
142 6
143 7
144 8
145 9
146 10
147 8
148 8
149 ## N-I dash stderr-json: ""
150 ## N-I dash STDOUT:
151 7
152 8
153 9
154 10
155 11
156 12
157 13
158 14
159 15
160 16
161 17
162 18
163 19
164 20
165 20
166 ## END
167 ## N-I mksh stderr-json: ""
168 ## N-I mksh STDOUT:
169 1
170 2
171 3
172 4
173 5
174 6
175 7
176 8
177 9
178 10
179 11
180 12
181 13
182 14
183 14
184 ## END
185
186 #### Length of undefined variable
187 echo ${#undef}
188 ## stdout: 0
189
190 #### Length of undefined variable with nounset
191 set -o nounset
192 echo ${#undef}
193 ## status: 1
194 ## OK dash status: 2
195
196 #### Length operator can't be followed by test operator
197 echo ${#x-default}
198
199 x=''
200 echo ${#x-default}
201
202 x='foo'
203 echo ${#x-default}
204
205 ## status: 2
206 ## OK bash/mksh status: 1
207 ## stdout-json: ""
208 ## BUG zsh status: 0
209 ## BUG zsh STDOUT:
210 7
211 0
212 3
213 ## END
214 ## BUG dash status: 0
215 ## BUG dash STDOUT:
216 0
217 0
218 3
219 ## END
220