| 1 | ## compare_shells: bash mksh zsh ash
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| 2 |
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| 3 | # dash doesn't have echo -e, $'', etc.
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| 4 |
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| 5 | # TODO: fix J8 bug causing failure
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| 6 |
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| 7 | # Cross-cutting test of serialization formats. That is, what J8 Notation
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| 8 | # should fix.
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| 9 | #
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| 10 | # TODO: Also see spec/xtrace for another use case.
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| 11 |
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| 12 | #### printf %q newline
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| 13 | case $SH in (ash) return ;; esac # yash and ash don't implement this
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| 14 |
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| 15 | newline=$'one\ntwo'
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| 16 | printf '%q\n' "$newline"
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| 17 |
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| 18 | quoted="$(printf '%q\n' "$newline")"
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| 19 | restored=$(eval "echo $quoted")
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| 20 | test "$newline" = "$restored" && echo roundtrip-ok
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| 21 |
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| 22 | ## STDOUT:
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| 23 | $'one\ntwo'
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| 24 | roundtrip-ok
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| 25 | ## END
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| 26 | ## OK mksh STDOUT:
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| 27 | 'one'$'\n''two'
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| 28 | roundtrip-ok
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| 29 | ## END
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| 30 | ## OK zsh STDOUT:
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| 31 | one$'\n'two
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| 32 | roundtrip-ok
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| 33 | ## END
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| 34 | ## N-I ash stdout-json: ""
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| 35 |
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| 36 | #### printf %q spaces
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| 37 | case $SH in (ash) return ;; esac # yash and ash don't implement this
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| 38 |
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| 39 | # bash does a weird thing and uses \
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| 40 |
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| 41 | spaces='one two'
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| 42 | printf '%q\n' "$spaces"
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| 43 |
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| 44 | ## STDOUT:
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| 45 | 'one two'
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| 46 | ## END
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| 47 | ## OK bash/zsh STDOUT:
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| 48 | one\ two
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| 49 | ## END
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| 50 | ## N-I ash stdout-json: ""
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| 51 |
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| 52 | #### printf %q quotes
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| 53 | case $SH in (ash) return ;; esac # yash and ash don't implement %q
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| 54 |
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| 55 | quotes=\'\"
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| 56 | printf '%q\n' "$quotes"
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| 57 |
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| 58 | quoted="$(printf '%q\n' "$quotes")"
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| 59 | restored=$(eval "echo $quoted")
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| 60 | test "$quotes" = "$restored" && echo roundtrip-ok
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| 61 |
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| 62 | ## STDOUT:
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| 63 | \'\"
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| 64 | roundtrip-ok
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| 65 | ## END
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| 66 | ## OK osh STDOUT:
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| 67 | $'\'"'
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| 68 | roundtrip-ok
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| 69 | ## END
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| 70 | ## BUG mksh STDOUT:
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| 71 | ''\''"'
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| 72 | roundtrip-ok
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| 73 | ## END
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| 74 | ## N-I ash stdout-json: ""
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| 75 |
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| 76 | #### printf %q unprintable
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| 77 | case $SH in (ash) return ;; esac # yash and ash don't implement this
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| 78 |
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| 79 | unprintable=$'\xff'
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| 80 | printf '%q\n' "$unprintable"
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| 81 |
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| 82 | # bash and zsh agree
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| 83 | ## STDOUT:
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| 84 | $'\377'
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| 85 | ## END
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| 86 | ## OK osh STDOUT:
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| 87 | $'\xff'
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| 88 | ## END
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| 89 | ## BUG mksh STDOUT:
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| 90 | ''$'\377'
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| 91 | ## END
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| 92 | ## N-I ash stdout-json: ""
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| 93 |
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| 94 | #### printf %q unicode
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| 95 | case $SH in (ash) return ;; esac # yash and ash don't implement this
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| 96 |
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| 97 | unicode=$'\u03bc'
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| 98 | unicode=$'\xce\xbc' # does the same thing
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| 99 |
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| 100 | printf '%q\n' "$unicode"
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| 101 |
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| 102 | # Oil issue: we have quotes. Isn't that OK?
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| 103 | ## STDOUT:
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| 104 | μ
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| 105 | ## END
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| 106 | ## OK osh STDOUT:
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| 107 | 'μ'
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| 108 | ## END
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| 109 | ## N-I ash stdout-json: ""
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| 110 |
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| 111 | #### printf %q invalid unicode
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| 112 | case $SH in (ash) return ;; esac
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| 113 |
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| 114 | # Hm bash/mksh/zsh understand these. They are doing decoding and error
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| 115 | # recovery! inspecting the bash source seems to confirm this.
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| 116 | unicode=$'\xce'
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| 117 | printf '%q\n' "$unicode"
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| 118 |
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| 119 | unicode=$'\xce\xce\xbc'
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| 120 | printf '%q\n' "$unicode"
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| 121 |
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| 122 | unicode=$'\xce\xbc\xce'
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| 123 | printf '%q\n' "$unicode"
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| 124 |
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| 125 | case $SH in (mksh) return ;; esac # it prints unprintable chars here!
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| 126 |
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| 127 | unicode=$'\xcea'
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| 128 | printf '%q\n' "$unicode"
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| 129 | unicode=$'a\xce'
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| 130 | printf '%q\n' "$unicode"
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| 131 | ## STDOUT:
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| 132 | $'\xce'
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| 133 | $'\xceμ'
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| 134 | $'μ\xce'
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| 135 | $'\xcea'
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| 136 | $'a\xce'
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| 137 | ## END
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| 138 | ## OK bash STDOUT:
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| 139 | $'\316'
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| 140 | $'\316μ'
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| 141 | $'μ\316'
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| 142 | $'\316a'
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| 143 | $'a\316'
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| 144 | ## END
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| 145 | ## BUG mksh STDOUT:
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| 146 | ''$'\316'
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| 147 | ''$'\316''μ'
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| 148 | 'μ'$'\316'
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| 149 | ## END
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| 150 | ## OK zsh STDOUT:
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| 151 | $'\316'
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| 152 | $'\316'μ
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| 153 | μ$'\316'
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| 154 | $'\316'a
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| 155 | a$'\316'
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| 156 | ## END
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| 157 | ## N-I ash stdout-json: ""
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| 158 |
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| 159 | #### set
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| 160 | case $SH in (zsh) return ;; esac # zsh doesn't make much sense
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| 161 |
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| 162 | zz=$'one\ntwo'
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| 163 |
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| 164 | set | grep zz
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| 165 | ## STDOUT:
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| 166 | zz=$'one\ntwo'
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| 167 | ## END
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| 168 | ## OK ash STDOUT:
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| 169 | zz='one
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| 170 | ## END
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| 171 | ## BUG zsh stdout-json: ""
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| 172 |
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| 173 |
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| 174 | #### declare
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| 175 | case $SH in (ash|zsh) return ;; esac # zsh doesn't make much sense
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| 176 |
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| 177 | zz=$'one\ntwo'
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| 178 |
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| 179 | typeset | grep zz
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| 180 | typeset -p zz
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| 181 |
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| 182 | ## STDOUT:
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| 183 | zz=$'one\ntwo'
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| 184 | declare -- zz=$'one\ntwo'
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| 185 | ## END
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| 186 |
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| 187 | ## OK mksh STDOUT:
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| 188 | typeset zz
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| 189 | typeset zz=$'one\ntwo'
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| 190 | ## BUG zsh stdout-json: ""
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| 191 | ## N-I ash stdout-json: ""
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| 192 |
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| 193 | #### ${var@Q}
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| 194 | case $SH in (zsh|ash) exit ;; esac
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| 195 |
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| 196 | zz=$'one\ntwo \u03bc'
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| 197 |
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| 198 | # weirdly, quoted and unquoted aren't different
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| 199 | echo ${zz@Q}
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| 200 | echo "${zz@Q}"
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| 201 | ## STDOUT:
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| 202 | $'one\ntwo μ'
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| 203 | $'one\ntwo μ'
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| 204 | ## END
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| 205 | ## OK mksh STDOUT:
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| 206 | $'one
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| 207 | two μ'
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| 208 | $'one
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| 209 | two μ'
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| 210 | ## END
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| 211 | ## N-I ash/zsh stdout-json: ""
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| 212 |
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| 213 | #### xtrace
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| 214 | zz=$'one\ntwo'
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| 215 | set -x
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| 216 | echo "$zz"
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| 217 | ## STDOUT:
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| 218 | one
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| 219 | two
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| 220 | ## END
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| 221 | ## STDERR:
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| 222 | + echo $'one\ntwo'
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| 223 | ## END
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| 224 | ## OK bash/ash STDERR:
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| 225 | + echo 'one
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| 226 | two'
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| 227 | ## END
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| 228 | ## OK zsh STDERR:
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| 229 | +zsh:3> echo 'one
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| 230 | two'
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| 231 | ## END
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| 232 |
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