| 1 | # xtrace test. Test PS4 and line numbers, etc.
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| 2 |
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| 3 | ## oils_failures_allowed: 1
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| 4 | ## compare_shells: bash dash mksh
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| 5 |
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| 6 | #### unset PS4
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| 7 | set -x
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| 8 | echo 1
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| 9 | unset PS4
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| 10 | echo 2
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| 11 | ## STDOUT:
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| 12 | 1
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| 13 | 2
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| 14 | ## STDERR:
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| 15 | + echo 1
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| 16 | + unset PS4
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| 17 | echo 2
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| 18 | ## END
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| 19 |
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| 20 | #### set -o verbose prints unevaluated code
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| 21 | set -o verbose
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| 22 | x=foo
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| 23 | y=bar
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| 24 | echo $x
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| 25 | echo $(echo $y)
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| 26 | ## STDOUT:
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| 27 | foo
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| 28 | bar
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| 29 | ## STDERR:
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| 30 | x=foo
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| 31 | y=bar
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| 32 | echo $x
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| 33 | echo $(echo $y)
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| 34 | ## OK bash STDERR:
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| 35 | x=foo
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| 36 | y=bar
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| 37 | echo $x
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| 38 | echo $(echo $y)
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| 39 | ## END
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| 40 |
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| 41 | #### xtrace with unprintable chars
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| 42 | case $SH in (dash) exit ;; esac
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| 43 |
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| 44 | s=$'a\x03b\004c\x00d'
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| 45 | set -o xtrace
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| 46 | echo "$s"
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| 47 | ## stdout-repr: 'a\x03b\x04c\x00d\n'
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| 48 | ## STDERR:
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| 49 | + echo $'a\u0003b\u0004c\u0000d'
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| 50 | ## END
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| 51 | ## OK bash stdout-repr: 'a\x03b\x04c\n'
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| 52 | ## OK bash stderr-repr: "+ echo $'a\\003b\\004c'\n"
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| 53 |
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| 54 | # nonsensical output?
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| 55 | ## BUG mksh stdout-repr: 'a;\x04c\r\n'
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| 56 | ## BUG mksh stderr-repr: "+ echo $'a;\\004c\\r'\n"
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| 57 | ## N-I dash stdout-json: ""
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| 58 | ## N-I dash stderr-json: ""
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| 59 |
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| 60 | #### xtrace with unicode chars
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| 61 | case $SH in (dash) exit ;; esac
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| 62 |
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| 63 | mu1='[μ]'
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| 64 | mu2=$'[\u03bc]'
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| 65 |
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| 66 | set -o xtrace
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| 67 | echo "$mu1" "$mu2"
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| 68 |
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| 69 | ## STDOUT:
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| 70 | [μ] [μ]
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| 71 | ## END
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| 72 | ## STDERR:
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| 73 | + echo '[μ]' '[μ]'
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| 74 | ## END
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| 75 | ## N-I dash stdout-json: ""
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| 76 | ## N-I dash stderr-json: ""
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| 77 |
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| 78 | #### xtrace with paths
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| 79 | set -o xtrace
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| 80 | echo my-dir/my_file.cc
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| 81 | ## STDOUT:
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| 82 | my-dir/my_file.cc
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| 83 | ## END
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| 84 | ## STDERR:
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| 85 | + echo my-dir/my_file.cc
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| 86 | ## END
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| 87 |
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| 88 | #### xtrace with tabs
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| 89 | case $SH in (dash) exit ;; esac
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| 90 |
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| 91 | set -o xtrace
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| 92 | echo $'[\t]'
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| 93 | ## stdout-json: "[\t]\n"
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| 94 | ## STDERR:
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| 95 | + echo $'[\t]'
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| 96 | ## END
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| 97 | # this is a bug because it's hard to see
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| 98 | ## BUG bash stderr-json: "+ echo '[\t]'\n"
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| 99 | ## N-I dash stdout-json: ""
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| 100 | ## N-I dash stderr-json: ""
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| 101 |
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| 102 | #### xtrace with whitespace, quotes, and backslash
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| 103 | set -o xtrace
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| 104 | echo '1 2' \' \" \\
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| 105 | ## STDOUT:
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| 106 | 1 2 ' " \
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| 107 | ## END
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| 108 |
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| 109 | # YSH is different because backslashes require $'\\' and not '\', but that's OK
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| 110 | ## STDERR:
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| 111 | + echo '1 2' $'\'' '"' $'\\'
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| 112 | ## END
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| 113 |
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| 114 | ## OK bash/mksh STDERR:
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| 115 | + echo '1 2' \' '"' '\'
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| 116 | ## END
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| 117 |
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| 118 | ## BUG dash STDERR:
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| 119 | + echo 1 2 ' " \
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| 120 | ## END
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| 121 |
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| 122 | #### xtrace with newlines
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| 123 | # bash and dash trace this badly. They print literal newlines, which I don't
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| 124 | # want.
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| 125 | set -x
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| 126 | echo $'[\n]'
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| 127 | ## STDOUT:
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| 128 | [
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| 129 | ]
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| 130 | ## STDERR:
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| 131 | + echo $'[\n]'
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| 132 | ## END
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| 133 | # bash has ugly output that spans lines
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| 134 | ## OK bash STDERR:
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| 135 | + echo '[
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| 136 | ]'
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| 137 | ## END
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| 138 | ## N-I dash stdout-json: "$[\n]\n"
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| 139 | ## N-I dash stderr-json: "+ echo $[\\n]\n"
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| 140 |
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| 141 | #### xtrace written before command executes
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| 142 | set -x
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| 143 | echo one >&2
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| 144 | echo two >&2
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| 145 | ## stdout-json: ""
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| 146 | ## STDERR:
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| 147 | + echo one
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| 148 | one
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| 149 | + echo two
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| 150 | two
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| 151 | ## OK mksh STDERR:
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| 152 | # mksh traces redirects!
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| 153 | + >&2
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| 154 | + echo one
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| 155 | one
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| 156 | + >&2
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| 157 | + echo two
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| 158 | two
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| 159 | ## END
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| 160 |
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| 161 | #### Assignments and assign builtins
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| 162 | set -x
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| 163 | x=1 x=2; echo $x; readonly x=3
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| 164 | ## STDOUT:
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| 165 | 2
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| 166 | ## END
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| 167 | ## STDERR:
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| 168 | + x=1
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| 169 | + x=2
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| 170 | + echo 2
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| 171 | + readonly x=3
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| 172 | ## END
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| 173 | ## OK dash STDERR:
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| 174 | + x=1 x=2
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| 175 | + echo 2
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| 176 | + readonly x=3
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| 177 | ## END
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| 178 | ## OK dash STDERR:
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| 179 | + x=1 x=2
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| 180 | + echo 2
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| 181 | + readonly x=3
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| 182 | ## END
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| 183 | ## OK bash STDERR:
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| 184 | + x=1
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| 185 | + x=2
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| 186 | + echo 2
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| 187 | + readonly x=3
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| 188 | + x=3
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| 189 | ## END
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| 190 | ## OK mksh STDERR:
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| 191 | + x=1 x=2
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| 192 | + echo 2
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| 193 | + readonly 'x=3'
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| 194 | ## END
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| 195 |
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| 196 | #### [[ ]]
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| 197 | case $SH in (dash|mksh) exit ;; esac
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| 198 |
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| 199 | set -x
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| 200 |
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| 201 | dir=/
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| 202 | if [[ -d $dir ]]; then
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| 203 | (( a = 42 ))
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| 204 | fi
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| 205 | ## stdout-json: ""
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| 206 | ## STDERR:
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| 207 | + dir=/
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| 208 | + [[ -d $dir ]]
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| 209 | + (( a = 42 ))
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| 210 | ## END
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| 211 | ## OK bash STDERR:
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| 212 | + dir=/
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| 213 | + [[ -d / ]]
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| 214 | + (( a = 42 ))
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| 215 | ## END
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| 216 | ## N-I dash/mksh stderr-json: ""
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| 217 |
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| 218 | #### PS4 is scoped
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| 219 | set -x
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| 220 | echo one
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| 221 | f() {
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| 222 | local PS4='- '
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| 223 | echo func;
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| 224 | }
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| 225 | f
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| 226 | echo two
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| 227 | ## STDERR:
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| 228 | + echo one
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| 229 | + f
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| 230 | + local 'PS4=- '
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| 231 | - echo func
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| 232 | + echo two
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| 233 | ## END
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| 234 | ## OK osh STDERR:
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| 235 | + echo one
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| 236 | + f
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| 237 | + local PS4='- '
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| 238 | - echo func
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| 239 | + echo two
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| 240 | ## END
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| 241 | ## OK dash STDERR:
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| 242 | # dash loses information about spaces! There is a trailing space, but you
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| 243 | # can't see it.
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| 244 | + echo one
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| 245 | + f
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| 246 | + local PS4=-
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| 247 | - echo func
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| 248 | + echo two
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| 249 | ## END
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| 250 | ## OK mksh STDERR:
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| 251 | # local gets turned into typeset
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| 252 | + echo one
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| 253 | + f
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| 254 | + typeset 'PS4=- '
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| 255 | - echo func
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| 256 | + echo two
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| 257 | ## END
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| 258 |
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| 259 | #### xtrace with variables in PS4
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| 260 | PS4='+$x:'
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| 261 | set -o xtrace
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| 262 | x=1
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| 263 | echo one
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| 264 | x=2
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| 265 | echo two
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| 266 | ## STDOUT:
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| 267 | one
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| 268 | two
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| 269 | ## END
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| 270 |
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| 271 | ## STDERR:
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| 272 | +:x=1
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| 273 | +1:echo one
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| 274 | +1:x=2
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| 275 | +2:echo two
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| 276 | ## END
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| 277 |
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| 278 | ## OK mksh STDERR:
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| 279 | # mksh has trailing spaces
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| 280 | +:x=1
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| 281 | +1:echo one
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| 282 | +1:x=2
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| 283 | +2:echo two
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| 284 | ## END
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| 285 |
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| 286 | ## OK osh/dash STDERR:
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| 287 | # the PS4 string is evaluated AFTER the variable is set. That's OK
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| 288 | +1:x=1
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| 289 | +1:echo one
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| 290 | +2:x=2
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| 291 | +2:echo two
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| 292 | ## END
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| 293 |
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| 294 | #### PS4 with unterminated ${
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| 295 | # osh shows inline error; maybe fail like dash/mksh?
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| 296 | x=1
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| 297 | PS4='+${x'
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| 298 | set -o xtrace
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| 299 | echo one
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| 300 | echo status=$?
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| 301 | ## STDOUT:
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| 302 | one
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| 303 | status=0
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| 304 | ## END
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| 305 | # mksh and dash both fail. bash prints errors to stderr.
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| 306 | ## OK dash stdout-json: ""
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| 307 | ## OK dash status: 2
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| 308 | ## OK mksh stdout-json: ""
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| 309 | ## OK mksh status: 1
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| 310 |
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| 311 | #### PS4 with unterminated $(
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| 312 | # osh shows inline error; maybe fail like dash/mksh?
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| 313 | x=1
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| 314 | PS4='+$(x'
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| 315 | set -o xtrace
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| 316 | echo one
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| 317 | echo status=$?
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| 318 | ## STDOUT:
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| 319 | one
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| 320 | status=0
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| 321 | ## END
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| 322 | # mksh and dash both fail. bash prints errors to stderr.
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| 323 | ## OK dash stdout-json: ""
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| 324 | ## OK dash status: 2
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| 325 | ## OK mksh stdout-json: ""
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| 326 | ## OK mksh status: 1
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| 327 |
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| 328 | #### PS4 with runtime error
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| 329 | # osh shows inline error; maybe fail like dash/mksh?
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| 330 | x=1
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| 331 | PS4='+oops $(( 1 / 0 )) \$'
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| 332 | set -o xtrace
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| 333 | echo one
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| 334 | echo status=$?
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| 335 | ## STDOUT:
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| 336 | one
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| 337 | status=0
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| 338 | ## END
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| 339 | # mksh and dash both fail. bash prints errors to stderr.
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| 340 | ## OK dash stdout-json: ""
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| 341 | ## OK dash status: 2
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| 342 | ## OK mksh stdout-json: ""
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| 343 | ## OK mksh status: 1
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| 344 |
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| 345 |
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| 346 | #### Reading $? in PS4
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| 347 | PS4='[last=$?] '
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| 348 | set -x
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| 349 | false
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| 350 | echo ok
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| 351 | ## STDOUT:
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| 352 | ok
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| 353 | ## END
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| 354 | ## STDERR:
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| 355 | [last=0] false
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| 356 | [last=1] echo ok
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| 357 | ## END
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| 358 | ## OK osh STDERR:
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| 359 | [last=0] 'false'
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| 360 | [last=1] echo ok
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| 361 | ## END
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