| 1 | ## oils_failures_allowed: 1
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| 2 | ## compare_shells: bash dash mksh
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| 3 |
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| 4 | #### Locals don't leak
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| 5 | f() {
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| 6 | local f_var=f_var
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| 7 | }
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| 8 | f
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| 9 | echo $f_var
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| 10 | ## stdout:
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| 11 |
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| 12 | #### Globals leak
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| 13 | f() {
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| 14 | f_var=f_var
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| 15 | }
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| 16 | f
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| 17 | echo $f_var
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| 18 | ## stdout: f_var
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| 19 |
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| 20 | #### Return statement
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| 21 | f() {
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| 22 | echo one
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| 23 | return 42
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| 24 | echo two
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| 25 | }
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| 26 | f
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| 27 | ## stdout: one
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| 28 | ## status: 42
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| 29 |
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| 30 | #### Dynamic Scope
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| 31 | f() {
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| 32 | echo $g_var
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| 33 | }
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| 34 | g() {
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| 35 | local g_var=g_var
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| 36 | f
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| 37 | }
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| 38 | g
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| 39 | ## stdout: g_var
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| 40 |
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| 41 | #### Dynamic Scope Mutation (wow this is bad)
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| 42 | f() {
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| 43 | g_var=f_mutation
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| 44 | }
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| 45 | g() {
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| 46 | local g_var=g_var
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| 47 | echo "g_var=$g_var"
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| 48 | f
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| 49 | echo "g_var=$g_var"
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| 50 | }
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| 51 | g
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| 52 | echo g_var=$g_var
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| 53 | ## STDOUT:
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| 54 | g_var=g_var
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| 55 | g_var=f_mutation
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| 56 | g_var=
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| 57 | ## END
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| 58 |
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| 59 | #### Assign local separately
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| 60 | f() {
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| 61 | local f
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| 62 | f='new-value'
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| 63 | echo "[$f]"
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| 64 | }
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| 65 | f
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| 66 | ## stdout: [new-value]
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| 67 | ## status: 0
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| 68 |
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| 69 | #### Assign a local and global on same line
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| 70 | myglobal=
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| 71 | f() {
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| 72 | local mylocal
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| 73 | mylocal=L myglobal=G
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| 74 | echo "[$mylocal $myglobal]"
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| 75 | }
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| 76 | f
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| 77 | echo "[$mylocal $myglobal]"
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| 78 | ## stdout-json: "[L G]\n[ G]\n"
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| 79 | ## status: 0
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| 80 |
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| 81 | #### Return without args gives previous
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| 82 | f() {
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| 83 | ( exit 42 )
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| 84 | return
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| 85 | }
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| 86 | f
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| 87 | echo status=$?
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| 88 | ## STDOUT:
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| 89 | status=42
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| 90 | ## END
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| 91 |
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| 92 | #### return "" (a lot of disagreement)
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| 93 | f() {
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| 94 | echo f
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| 95 | return ""
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| 96 | }
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| 97 |
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| 98 | f
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| 99 | echo status=$?
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| 100 | ## STDOUT:
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| 101 | f
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| 102 | status=0
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| 103 | ## END
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| 104 | ## status: 0
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| 105 |
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| 106 | ## OK dash status: 2
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| 107 | ## OK dash STDOUT:
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| 108 | f
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| 109 | ## END
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| 110 |
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| 111 | ## BUG mksh STDOUT:
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| 112 | f
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| 113 | status=1
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| 114 | ## END
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| 115 |
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| 116 | ## BUG bash STDOUT:
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| 117 | f
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| 118 | status=2
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| 119 | ## END
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| 120 |
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| 121 | #### return $empty
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| 122 | f() {
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| 123 | echo f
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| 124 | empty=
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| 125 | return $empty
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| 126 | }
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| 127 |
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| 128 | f
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| 129 | echo status=$?
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| 130 | ## STDOUT:
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| 131 | f
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| 132 | status=0
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| 133 | ## END
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| 134 |
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| 135 | #### Subshell function
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| 136 |
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| 137 | f() ( return 42; )
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| 138 | # BUG: OSH raises invalid control flow! I think we should just allow 'return'
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| 139 | # but maybe not 'break' etc.
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| 140 | g() ( return 42 )
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| 141 | # bash warns here but doesn't cause an error
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| 142 | # g() ( break )
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| 143 |
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| 144 | f
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| 145 | echo status=$?
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| 146 | g
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| 147 | echo status=$?
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| 148 |
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| 149 | ## STDOUT:
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| 150 | status=42
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| 151 | status=42
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| 152 | ## END
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