| 1 | ## compare_shells: bash-4.4
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| 2 |
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| 3 | # Tests for bash's type flags on cells. Hopefully we don't have to implement
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| 4 | # this, but it's good to know the behavior.
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| 5 | #
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| 6 | # OSH follows a Python-ish model of types carried with values/objects, not
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| 7 | # locations.
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| 8 | #
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| 9 | # See https://github.com/oilshell/oil/issues/26
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| 10 |
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| 11 |
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| 12 | #### declare -i -l -u errors can be silenced - ignore_flags_not_impl
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| 13 |
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| 14 | declare -i foo=2+3
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| 15 | echo status=$?
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| 16 | echo foo=$foo
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| 17 | echo
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| 18 |
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| 19 | shopt -s ignore_flags_not_impl
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| 20 | declare -i bar=2+3
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| 21 | echo status=$?
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| 22 | echo bar=$bar
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| 23 |
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| 24 | ## STDOUT:
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| 25 | status=2
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| 26 | foo=
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| 27 |
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| 28 | status=0
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| 29 | bar=2+3
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| 30 | ## END
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| 31 |
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| 32 | # bash doesn't need this
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| 33 |
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| 34 | ## OK bash STDOUT:
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| 35 | status=0
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| 36 | foo=5
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| 37 |
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| 38 | status=0
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| 39 | bar=5
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| 40 | ## END
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| 41 |
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| 42 | #### declare -i with +=
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| 43 | declare s
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| 44 | s='1 '
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| 45 | s+=' 2 ' # string append
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| 46 |
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| 47 | declare -i i
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| 48 | i='1 '
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| 49 | i+=' 2 ' # arith add
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| 50 |
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| 51 | declare -i j
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| 52 | j=x # treated like zero
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| 53 | j+=' 2 ' # arith add
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| 54 |
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| 55 | echo "[$s]"
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| 56 | echo [$i]
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| 57 | echo [$j]
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| 58 | ## STDOUT:
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| 59 | [1 2 ]
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| 60 | [3]
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| 61 | [2]
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| 62 | ## END
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| 63 | ## N-I osh STDOUT:
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| 64 | [1 2 ]
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| 65 | [1 2 ]
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| 66 | [x 2 ]
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| 67 | ## END
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| 68 |
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| 69 | #### declare -i with arithmetic inside strings (Nix, issue 864)
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| 70 |
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| 71 | # example
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| 72 | # https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L379
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| 73 |
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| 74 | declare -i s
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| 75 | s='1 + 2'
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| 76 | echo s=$s
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| 77 |
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| 78 | declare -a array=(1 2 3)
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| 79 | declare -i item
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| 80 | item='array[1+1]'
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| 81 | echo item=$item
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| 82 |
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| 83 | ## STDOUT:
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| 84 | s=3
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| 85 | item=3
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| 86 | ## END
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| 87 | ## N-I osh STDOUT:
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| 88 | s=1 + 2
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| 89 | item=array[1+1]
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| 90 | ## END
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| 91 |
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| 92 | #### append in arith context
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| 93 | declare s
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| 94 | (( s='1 '))
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| 95 | (( s+=' 2 ')) # arith add
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| 96 | declare -i i
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| 97 | (( i='1 ' ))
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| 98 | (( i+=' 2 ' ))
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| 99 | declare -i j
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| 100 | (( j='x ' )) # treated like zero
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| 101 | (( j+=' 2 ' ))
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| 102 | echo "$s|$i|$j"
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| 103 | ## STDOUT:
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| 104 | 3|3|2
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| 105 | ## END
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| 106 |
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| 107 | #### declare array vs. string: mixing -a +a and () ''
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| 108 | # dynamic parsing of first argument.
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| 109 | declare +a 'xyz1=1'
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| 110 | declare +a 'xyz2=(2 3)'
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| 111 | declare -a 'xyz3=4'
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| 112 | declare -a 'xyz4=(5 6)'
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| 113 | argv.py "${xyz1}" "${xyz2}" "${xyz3[@]}" "${xyz4[@]}"
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| 114 | ## STDOUT:
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| 115 | ['1', '(2 3)', '4', '5', '6']
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| 116 | ## END
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| 117 | ## N-I osh STDOUT:
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| 118 | ['', '']
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| 119 | ## END
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| 120 |
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| 121 |
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| 122 | #### declare array vs. associative array
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| 123 | # Hm I don't understand why the array only has one element. I guess because
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| 124 | # index 0 is used twice?
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| 125 | declare -a 'array=([a]=b [c]=d)'
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| 126 | declare -A 'assoc=([a]=b [c]=d)'
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| 127 | argv.py "${#array[@]}" "${!array[@]}" "${array[@]}"
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| 128 | argv.py "${#assoc[@]}" "${!assoc[@]}" "${assoc[@]}"
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| 129 | ## STDOUT:
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| 130 | ['1', '0', 'd']
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| 131 | ['2', 'a', 'c', 'b', 'd']
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| 132 | ## END
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| 133 | ## N-I osh STDOUT:
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| 134 | ['0']
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| 135 | ['0']
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| 136 | ## END
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| 137 |
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| 138 |
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| 139 | #### declare -l -u
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| 140 |
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| 141 | declare -l lower=FOO
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| 142 | declare -u upper=foo
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| 143 |
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| 144 | echo $lower
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| 145 | echo $upper
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| 146 |
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| 147 | # other:
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| 148 | # -t trace
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| 149 | # -I inherit attributes
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| 150 |
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| 151 | ## STDOUT:
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| 152 | foo
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| 153 | FOO
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| 154 | ## END
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| 155 |
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| 156 | ## N-I osh STDOUT:
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| 157 | FOO
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| 158 | foo
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| 159 | ## END
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