| 1 | ## compare_shells: dash bash mksh
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| 2 |
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| 3 | # Tests for the args in:
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| 4 | #
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| 5 | # ${foo:-}
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| 6 | #
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| 7 | # I think the weird single quote behavior is a bug, but everyone agrees. It's
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| 8 | # a consequence of quote removal.
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| 9 | #
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| 10 | # WEIRD: single quoted default, inside double quotes. Oh I guess this is
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| 11 | # because double quotes don't treat single quotes as special?
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| 12 | #
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| 13 | # OK here is the issue. If we have ${} bare, then the default is parsed as
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| 14 | # LexState.OUTER. If we have "${}", then it's parsed as LexState.DQ. That
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| 15 | # makes sense I guess. Vim's syntax highlighting is throwing me off.
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| 16 |
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| 17 | #### "${empty:-}"
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| 18 | empty=
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| 19 | argv.py "${empty:-}"
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| 20 | ## stdout: ['']
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| 21 |
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| 22 | #### ${empty:-}
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| 23 | empty=
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| 24 | argv.py ${empty:-}
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| 25 | ## stdout: []
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| 26 |
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| 27 | #### array with empty values
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| 28 | declare -a A=('' x "" '')
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| 29 | argv.py "${A[@]}"
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| 30 | ## stdout: ['', 'x', '', '']
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| 31 | ## N-I dash stdout-json: ""
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| 32 | ## N-I dash status: 2
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| 33 | ## N-I mksh stdout-json: ""
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| 34 | ## N-I mksh status: 1
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| 35 |
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| 36 | #### substitution of IFS character, quoted and unquoted
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| 37 | IFS=:
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| 38 | s=:
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| 39 | argv.py $s
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| 40 | argv.py "$s"
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| 41 | ## STDOUT:
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| 42 | ['']
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| 43 | [':']
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| 44 | ## END
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| 45 |
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| 46 | #### :-
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| 47 | empty=''
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| 48 | argv.py ${empty:-a} ${Unset:-b}
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| 49 | ## stdout: ['a', 'b']
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| 50 |
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| 51 | #### -
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| 52 | empty=''
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| 53 | argv.py ${empty-a} ${Unset-b}
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| 54 | # empty one is still elided!
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| 55 | ## stdout: ['b']
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| 56 |
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| 57 | #### Inner single quotes
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| 58 | argv.py ${Unset:-'b'}
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| 59 | ## stdout: ['b']
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| 60 |
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| 61 | #### Inner single quotes, outer double quotes
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| 62 | # This is the WEIRD ONE. Single quotes appear outside. But all shells agree!
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| 63 | argv.py "${Unset:-'b'}"
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| 64 | ## stdout: ["'b'"]
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| 65 |
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| 66 | #### Inner double quotes
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| 67 | argv.py ${Unset:-"b"}
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| 68 | ## stdout: ['b']
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| 69 |
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| 70 | #### Inner double quotes, outer double quotes
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| 71 | argv.py "${Unset-"b"}"
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| 72 | ## stdout: ['b']
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| 73 |
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| 74 | #### Multiple words: no quotes
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| 75 | argv.py ${Unset:-a b c}
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| 76 | ## stdout: ['a', 'b', 'c']
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| 77 |
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| 78 | #### Multiple words: no outer quotes, inner single quotes
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| 79 | argv.py ${Unset:-'a b c'}
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| 80 | ## stdout: ['a b c']
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| 81 |
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| 82 | #### Multiple words: no outer quotes, inner double quotes
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| 83 | argv.py ${Unset:-"a b c"}
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| 84 | ## stdout: ['a b c']
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| 85 |
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| 86 | #### Multiple words: outer double quotes, no inner quotes
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| 87 | argv.py "${Unset:-a b c}"
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| 88 | ## stdout: ['a b c']
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| 89 |
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| 90 | #### Multiple words: outer double quotes, inner double quotes
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| 91 | argv.py "${Unset:-"a b c"}"
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| 92 | ## stdout: ['a b c']
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| 93 |
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| 94 | #### Multiple words: outer double quotes, inner single quotes
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| 95 | argv.py "${Unset:-'a b c'}"
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| 96 | # WEIRD ONE.
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| 97 | ## stdout: ["'a b c'"]
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| 98 |
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| 99 | #### Mixed inner quotes
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| 100 | argv.py ${Unset:-"a b" c}
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| 101 | ## stdout: ['a b', 'c']
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| 102 |
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| 103 | #### Mixed inner quotes with outer quotes
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| 104 | argv.py "${Unset:-"a b" c}"
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| 105 | ## stdout: ['a b c']
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| 106 |
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| 107 | #### part_value tree with multiple words
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| 108 | argv.py ${a:-${a:-"1 2" "3 4"}5 "6 7"}
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| 109 | ## stdout: ['1 2', '3 45', '6 7']
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| 110 |
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| 111 | #### part_value tree on RHS
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| 112 | v=${a:-${a:-"1 2" "3 4"}5 "6 7"}
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| 113 | argv.py "${v}"
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| 114 | ## stdout: ['1 2 3 45 6 7']
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| 115 |
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| 116 | #### Var with multiple words: no quotes
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| 117 | var='a b c'
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| 118 | argv.py ${Unset:-$var}
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| 119 | ## stdout: ['a', 'b', 'c']
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| 120 |
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| 121 | #### Multiple words: no outer quotes, inner single quotes
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| 122 | var='a b c'
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| 123 | argv.py ${Unset:-'$var'}
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| 124 | ## stdout: ['$var']
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| 125 |
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| 126 | #### Multiple words: no outer quotes, inner double quotes
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| 127 | var='a b c'
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| 128 | argv.py ${Unset:-"$var"}
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| 129 | ## stdout: ['a b c']
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| 130 |
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| 131 | #### Multiple words: outer double quotes, no inner quotes
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| 132 | var='a b c'
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| 133 | argv.py "${Unset:-$var}"
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| 134 | ## stdout: ['a b c']
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| 135 |
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| 136 | #### Multiple words: outer double quotes, inner double quotes
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| 137 | var='a b c'
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| 138 | argv.py "${Unset:-"$var"}"
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| 139 | ## stdout: ['a b c']
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| 140 |
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| 141 | #### Multiple words: outer double quotes, inner single quotes
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| 142 | # WEIRD ONE.
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| 143 | #
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| 144 | # I think I should just disallow any word with single quotes inside double
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| 145 | # quotes.
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| 146 | var='a b c'
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| 147 | argv.py "${Unset:-'$var'}"
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| 148 | ## stdout: ["'a b c'"]
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| 149 |
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| 150 | #### No outer quotes, Multiple internal quotes
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| 151 | # It's like a single command word. Parts are joined directly.
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| 152 | var='a b c'
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| 153 | argv.py ${Unset:-A$var " $var"D E F}
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| 154 | ## stdout: ['Aa', 'b', 'c', ' a b cD', 'E', 'F']
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| 155 |
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| 156 | #### Strip a string with single quotes, unquoted
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| 157 | foo="'a b c d'"
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| 158 | argv.py ${foo%d\'}
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| 159 | ## stdout: ["'a", 'b', 'c']
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| 160 |
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| 161 | #### Strip a string with single quotes, double quoted
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| 162 | foo="'a b c d'"
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| 163 | argv.py "${foo%d\'}"
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| 164 | ## STDOUT:
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| 165 | ["'a b c "]
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| 166 | ## END
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| 167 |
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| 168 | #### The string to strip is space sensitive
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| 169 | foo='a b c d'
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| 170 | argv.py "${foo%c d}" "${foo%c d}"
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| 171 | ## stdout: ['a b ', 'a b c d']
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| 172 |
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| 173 | #### The string to strip can be single quoted, outer is unquoted
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| 174 | foo='a b c d'
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| 175 | argv.py ${foo%'c d'} ${foo%'c d'}
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| 176 | ## stdout: ['a', 'b', 'a', 'b', 'c', 'd']
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| 177 |
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| 178 | #### Syntax error for single quote in double quote
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| 179 | foo="'a b c d'"
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| 180 | argv.py "${foo%d'}"
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| 181 | ## stdout-json: ""
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| 182 | ## status: 2
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| 183 | ## OK mksh status: 1
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| 184 |
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| 185 | #### "${undef-'c d'}" and "${foo%'c d'}" are parsed differently
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| 186 |
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| 187 | # quotes are LITERAL here
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| 188 | argv.py "${undef-'c d'}" "${undef-'c d'}"
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| 189 | argv.py ${undef-'c d'} ${undef-'c d'}
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| 190 |
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| 191 | echo ---
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| 192 |
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| 193 | # quotes are RESPECTED here
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| 194 | foo='a b c d'
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| 195 | argv.py "${foo%'c d'}" "${foo%'c d'}"
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| 196 |
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| 197 | case $SH in (dash) exit ;; esac
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| 198 |
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| 199 | argv.py "${foo//'c d'/zzz}" "${foo//'c d'/zzz}"
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| 200 | argv.py "${foo//'c d'/'zzz'}" "${foo//'c d'/'zzz'}"
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| 201 |
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| 202 | ## STDOUT:
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| 203 | ["'c d'", "'c d'"]
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| 204 | ['c d', 'c d']
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| 205 | ---
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| 206 | ['a b ', 'a b c d']
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| 207 | ['a b zzz', 'a b c d']
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| 208 | ['a b zzz', 'a b c d']
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| 209 | ## END
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| 210 | ## OK dash STDOUT:
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| 211 | ["'c d'", "'c d'"]
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| 212 | ['c d', 'c d']
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| 213 | ---
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| 214 | ['a b ', 'a b c d']
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| 215 | ## END
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| 216 |
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| 217 | #### $'' allowed within VarSub arguments
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| 218 | # Odd behavior of bash/mksh: $'' is recognized but NOT ''!
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| 219 | x=abc
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| 220 | echo ${x%$'b'*}
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| 221 | echo "${x%$'b'*}" # git-prompt.sh relies on this
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| 222 | ## STDOUT:
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| 223 | a
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| 224 | a
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| 225 | ## END
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| 226 | ## N-I dash STDOUT:
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| 227 | abc
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| 228 | abc
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| 229 | ## END
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| 230 |
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| 231 | #### # operator with single quoted arg (dash/ash and bash/mksh disagree, reported by Crestwave)
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| 232 | var=a
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| 233 | echo -${var#'a'}-
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| 234 | echo -"${var#'a'}"-
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| 235 | var="'a'"
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| 236 | echo -${var#'a'}-
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| 237 | echo -"${var#'a'}"-
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| 238 | ## STDOUT:
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| 239 | --
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| 240 | --
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| 241 | -'a'-
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| 242 | -'a'-
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| 243 | ## END
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| 244 | ## OK ash STDOUT:
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| 245 | --
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| 246 | -a-
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| 247 | -'a'-
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| 248 | --
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| 249 | ## END
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| 250 |
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| 251 | #### / operator with single quoted arg (causes syntax error in regex in OSH, reported by Crestwave)
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| 252 | var="++--''++--''"
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| 253 | echo no plus or minus "${var//[+-]}"
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| 254 | echo no plus or minus "${var//['+-']}"
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| 255 | ## STDOUT:
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| 256 | no plus or minus ''''
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| 257 | no plus or minus ''''
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| 258 | ## END
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| 259 | ## status: 0
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| 260 | ## BUG ash STDOUT:
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| 261 | no plus or minus ''''
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| 262 | no plus or minus ++--++--
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| 263 | ## END
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| 264 | ## BUG ash status: 0
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| 265 | ## N-I dash stdout-json: ""
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| 266 | ## N-I dash status: 2
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| 267 |
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| 268 | #### single quotes work inside character classes
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| 269 | x='a[[[---]]]b'
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| 270 | echo "${x//['[]']}"
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| 271 | ## STDOUT:
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| 272 | a---b
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| 273 | ## END
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| 274 | ## BUG ash STDOUT:
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| 275 | a[[[---]]]b
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| 276 | ## END
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| 277 | ## N-I dash stdout-json: ""
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| 278 | ## N-I dash status: 2
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| 279 |
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| 280 | #### comparison: :- operator with single quoted arg
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| 281 | echo ${unset:-'a'}
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| 282 | echo "${unset:-'a'}"
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| 283 | ## STDOUT:
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| 284 | a
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| 285 | 'a'
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| 286 | ## END
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| 287 |
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| 288 |
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| 289 | #### Right Brace as argument (similar to #702)
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| 290 |
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| 291 | echo "${var-}}"
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| 292 | echo "${var-\}}"
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| 293 | echo "${var-'}'}"
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| 294 | echo "${var-"}"}"
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| 295 | ## STDOUT:
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| 296 | }
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| 297 | }
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| 298 | ''}
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| 299 | }
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| 300 | ## END
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| 301 | ## BUG bash STDOUT:
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| 302 | }
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| 303 | }
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| 304 | '}'
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| 305 | }
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| 306 | ## END
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| 307 | ## BUG yash STDOUT:
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| 308 | }
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| 309 | }
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| 310 | }
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| 311 | }
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| 312 | ## END
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| 313 |
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