1 |
#!/usr/bin/env bash |
2 |
# |
3 |
# Test combination of var ops. |
4 |
# |
5 |
# NOTE: There are also slice tests in {array,arith-context}.test.sh. |
6 |
|
7 |
#### String slice |
8 |
foo=abcdefg |
9 |
echo ${foo:1:3} |
10 |
## STDOUT: |
11 |
bcd |
12 |
## END |
13 |
|
14 |
#### Cannot take length of substring slice |
15 |
# These are runtime errors, but we could make them parse time errors. |
16 |
v=abcde |
17 |
echo ${#v:1:3} |
18 |
## status: 1 |
19 |
## OK osh status: 2 |
20 |
# zsh actually implements this! |
21 |
## OK zsh stdout: 3 |
22 |
## OK zsh status: 0 |
23 |
|
24 |
#### Out of range string slice: begin |
25 |
# out of range begin doesn't raise error in bash, but in mksh it skips the |
26 |
# whole thing! |
27 |
foo=abcdefg |
28 |
echo _${foo:100:3} |
29 |
echo $? |
30 |
## STDOUT: |
31 |
_ |
32 |
0 |
33 |
## END |
34 |
## BUG mksh stdout-json: "\n0\n" |
35 |
|
36 |
#### Out of range string slice: length |
37 |
# OK in both bash and mksh |
38 |
foo=abcdefg |
39 |
echo _${foo:3:100} |
40 |
echo $? |
41 |
## STDOUT: |
42 |
_defg |
43 |
0 |
44 |
## END |
45 |
## BUG mksh stdout-json: "_defg\n0\n" |
46 |
|
47 |
#### String slice: negative begin |
48 |
foo=abcdefg |
49 |
echo ${foo: -4:3} |
50 |
## OK osh stdout: |
51 |
## stdout: def |
52 |
|
53 |
#### String slice: negative second arg is position, not length |
54 |
foo=abcdefg |
55 |
echo ${foo:3:-1} ${foo: 3: -2} ${foo:3 :-3 } |
56 |
## OK osh stdout: |
57 |
## stdout: def de d |
58 |
## BUG mksh stdout: defg defg defg |
59 |
|
60 |
|
61 |
#### strict_word_eval with string slice |
62 |
shopt -s strict_word_eval || true |
63 |
echo slice |
64 |
s='abc' |
65 |
echo -${s: -2}- |
66 |
## STDOUT: |
67 |
slice |
68 |
## END |
69 |
## status: 1 |
70 |
## N-I bash/mksh/zsh status: 0 |
71 |
## N-I bash/mksh/zsh STDOUT: |
72 |
slice |
73 |
-bc- |
74 |
## END |
75 |
|
76 |
#### String slice with math |
77 |
# I think this is the $(()) language inside? |
78 |
i=1 |
79 |
foo=abcdefg |
80 |
echo ${foo: i+4-2 : i + 2} |
81 |
## stdout: def |
82 |
|
83 |
#### Slice undefined |
84 |
echo -${undef:1:2}- |
85 |
set -o nounset |
86 |
echo -${undef:1:2}- |
87 |
echo -done- |
88 |
## STDOUT: |
89 |
-- |
90 |
## END |
91 |
## status: 1 |
92 |
# mksh doesn't respect nounset! |
93 |
## BUG mksh status: 0 |
94 |
## BUG mksh STDOUT: |
95 |
-- |
96 |
-- |
97 |
-done- |
98 |
## END |
99 |
|
100 |
#### Slice UTF-8 String |
101 |
# mksh slices by bytes. |
102 |
foo='--μ--' |
103 |
echo ${foo:1:3} |
104 |
## stdout: -μ- |
105 |
## BUG mksh stdout: -μ |
106 |
|
107 |
#### Slice string with invalid UTF-8 results in empty string and warning |
108 |
s=$(echo -e "\xFF")bcdef |
109 |
echo -${s:1:3}- |
110 |
## status: 0 |
111 |
## STDOUT: |
112 |
-- |
113 |
## END |
114 |
## STDERR: |
115 |
[??? no location ???] warning: Invalid start of UTF-8 character |
116 |
## END |
117 |
## BUG bash/mksh/zsh status: 0 |
118 |
## BUG bash/mksh/zsh STDOUT: |
119 |
-bcd- |
120 |
## END |
121 |
## BUG bash/mksh/zsh stderr-json: "" |
122 |
|
123 |
|
124 |
#### Slice string with invalid UTF-8 with strict_word_eval |
125 |
shopt -s strict_word_eval || true |
126 |
echo slice |
127 |
s=$(echo -e "\xFF")bcdef |
128 |
echo -${s:1:3}- |
129 |
## status: 1 |
130 |
## STDOUT: |
131 |
slice |
132 |
## END |
133 |
## N-I bash/mksh/zsh status: 0 |
134 |
## N-I bash/mksh/zsh STDOUT: |
135 |
slice |
136 |
-bcd- |
137 |
## END |
138 |
|