| 1 |
|
| 2 | #### Locals don't leak
|
| 3 | f() {
|
| 4 | local f_var=f_var
|
| 5 | }
|
| 6 | f
|
| 7 | echo $f_var
|
| 8 | ## stdout:
|
| 9 |
|
| 10 | #### Globals leak
|
| 11 | f() {
|
| 12 | f_var=f_var
|
| 13 | }
|
| 14 | f
|
| 15 | echo $f_var
|
| 16 | ## stdout: f_var
|
| 17 |
|
| 18 | #### Return statement
|
| 19 | f() {
|
| 20 | echo one
|
| 21 | return 42
|
| 22 | echo two
|
| 23 | }
|
| 24 | f
|
| 25 | ## stdout: one
|
| 26 | ## status: 42
|
| 27 |
|
| 28 | #### Dynamic Scope
|
| 29 | f() {
|
| 30 | echo $g_var
|
| 31 | }
|
| 32 | g() {
|
| 33 | local g_var=g_var
|
| 34 | f
|
| 35 | }
|
| 36 | g
|
| 37 | ## stdout: g_var
|
| 38 |
|
| 39 | #### Dynamic Scope Mutation (wow this is bad)
|
| 40 | f() {
|
| 41 | g_var=f_mutation
|
| 42 | }
|
| 43 | g() {
|
| 44 | local g_var=g_var
|
| 45 | echo "g_var=$g_var"
|
| 46 | f
|
| 47 | echo "g_var=$g_var"
|
| 48 | }
|
| 49 | g
|
| 50 | echo g_var=$g_var
|
| 51 | ## STDOUT:
|
| 52 | g_var=g_var
|
| 53 | g_var=f_mutation
|
| 54 | g_var=
|
| 55 | ## END
|
| 56 |
|
| 57 | #### Assign local separately
|
| 58 | f() {
|
| 59 | local f
|
| 60 | f='new-value'
|
| 61 | echo "[$f]"
|
| 62 | }
|
| 63 | f
|
| 64 | ## stdout: [new-value]
|
| 65 | ## status: 0
|
| 66 |
|
| 67 | #### Assign a local and global on same line
|
| 68 | myglobal=
|
| 69 | f() {
|
| 70 | local mylocal
|
| 71 | mylocal=L myglobal=G
|
| 72 | echo "[$mylocal $myglobal]"
|
| 73 | }
|
| 74 | f
|
| 75 | echo "[$mylocal $myglobal]"
|
| 76 | ## stdout-json: "[L G]\n[ G]\n"
|
| 77 | ## status: 0
|
| 78 |
|
| 79 | #### Return without args gives previous
|
| 80 | f() {
|
| 81 | ( exit 42 )
|
| 82 | return
|
| 83 | }
|
| 84 | f
|
| 85 | echo status=$?
|
| 86 | ## STDOUT:
|
| 87 | status=42
|
| 88 | ## END
|
| 89 |
|
| 90 | #### return "" (a lot of disagreement)
|
| 91 | f() {
|
| 92 | echo f
|
| 93 | return ""
|
| 94 | }
|
| 95 |
|
| 96 | f
|
| 97 | echo status=$?
|
| 98 | ## STDOUT:
|
| 99 | f
|
| 100 | status=0
|
| 101 | ## END
|
| 102 | ## status: 0
|
| 103 |
|
| 104 | ## OK dash status: 2
|
| 105 | ## OK dash STDOUT:
|
| 106 | f
|
| 107 | ## END
|
| 108 |
|
| 109 | ## BUG mksh STDOUT:
|
| 110 | f
|
| 111 | status=1
|
| 112 | ## END
|
| 113 |
|
| 114 | ## BUG bash STDOUT:
|
| 115 | f
|
| 116 | status=2
|
| 117 | ## END
|
| 118 |
|
| 119 | #### return $empty
|
| 120 | f() {
|
| 121 | echo f
|
| 122 | empty=
|
| 123 | return $empty
|
| 124 | }
|
| 125 |
|
| 126 | f
|
| 127 | echo status=$?
|
| 128 | ## STDOUT:
|
| 129 | f
|
| 130 | status=0
|
| 131 | ## END
|
| 132 |
|
| 133 | #### Subshell function
|
| 134 |
|
| 135 | f() ( return 42; )
|
| 136 | # BUG: OSH raises invalid control flow! I think we should just allow 'return'
|
| 137 | # but maybe not 'break' etc.
|
| 138 | g() ( return 42 )
|
| 139 | # bash warns here but doesn't cause an error
|
| 140 | # g() ( break )
|
| 141 |
|
| 142 | f
|
| 143 | echo status=$?
|
| 144 | g
|
| 145 | echo status=$?
|
| 146 |
|
| 147 | ## STDOUT:
|
| 148 | status=42
|
| 149 | status=42
|
| 150 | ## END
|