| 1 | ## oils_failures_allowed: 0
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| 2 | ## compare_shells: bash dash mksh zsh
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| 3 |
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| 4 | #
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| 5 | # Tests for pipelines.
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| 6 | # NOTE: Grammatically, ! is part of the pipeline:
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| 7 | #
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| 8 | # pipeline : pipe_sequence
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| 9 | # | Bang pipe_sequence
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| 10 |
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| 11 | #### Brace group in pipeline
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| 12 | { echo one; echo two; } | tac
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| 13 | ## STDOUT:
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| 14 | two
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| 15 | one
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| 16 | ## END
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| 17 |
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| 18 | #### For loop starts pipeline
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| 19 | for w in one two; do
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| 20 | echo $w
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| 21 | done | tac
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| 22 | ## STDOUT:
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| 23 | two
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| 24 | one
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| 25 | ## END
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| 26 |
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| 27 | #### While Loop ends pipeline
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| 28 | seq 3 | while read i
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| 29 | do
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| 30 | echo ".$i"
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| 31 | done
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| 32 | ## STDOUT:
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| 33 | .1
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| 34 | .2
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| 35 | .3
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| 36 | ## END
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| 37 |
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| 38 | #### Redirect in Pipeline
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| 39 | echo hi 1>&2 | wc -l
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| 40 | ## stdout: 0
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| 41 | ## BUG zsh stdout: 1
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| 42 |
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| 43 | #### Pipeline comments
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| 44 | echo abcd | # input
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| 45 | # blank line
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| 46 | tr a-z A-Z # transform
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| 47 | ## stdout: ABCD
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| 48 |
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| 49 | #### Exit code is last status
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| 50 | echo a | egrep '[0-9]+'
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| 51 | ## status: 1
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| 52 |
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| 53 | #### PIPESTATUS
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| 54 | return3() {
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| 55 | return 3
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| 56 | }
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| 57 | { sleep 0.03; exit 1; } | { sleep 0.02; exit 2; } | { sleep 0.01; return3; }
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| 58 | echo ${PIPESTATUS[@]}
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| 59 | ## stdout: 1 2 3
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| 60 | ## N-I dash status: 2
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| 61 | ## N-I dash stdout-json: ""
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| 62 | ## N-I zsh status: 0
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| 63 | ## N-I zsh STDOUT:
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| 64 |
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| 65 | ## END
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| 66 |
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| 67 | #### PIPESTATUS is set on simple commands, but NOT in OSH
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| 68 | case $SH in dash|zsh) exit ;; esac
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| 69 |
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| 70 | false
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| 71 | echo pipestatus ${PIPESTATUS[@]}
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| 72 |
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| 73 | ## STDOUT:
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| 74 | pipestatus 1
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| 75 | ## END
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| 76 | ## OK osh STDOUT:
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| 77 | pipestatus
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| 78 | ## END
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| 79 | ## N-I dash/zsh STDOUT:
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| 80 | ## END
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| 81 |
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| 82 | #### PIPESTATUS with shopt -s lastpipe
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| 83 | shopt -s lastpipe
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| 84 | return3() {
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| 85 | return 3
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| 86 | }
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| 87 | { sleep 0.03; exit 1; } | { sleep 0.02; exit 2; } | { sleep 0.01; return3; }
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| 88 | echo ${PIPESTATUS[@]}
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| 89 | ## stdout: 1 2 3
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| 90 | ## N-I dash status: 2
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| 91 | ## N-I dash stdout-json: ""
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| 92 | ## N-I zsh status: 0
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| 93 | ## N-I zsh STDOUT:
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| 94 |
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| 95 | ## END
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| 96 |
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| 97 | #### |&
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| 98 | stdout_stderr.py |& cat
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| 99 | ## STDOUT:
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| 100 | STDERR
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| 101 | STDOUT
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| 102 | ## END
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| 103 | ## status: 0
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| 104 | ## N-I dash/mksh stdout-json: ""
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| 105 | ## N-I dash status: 2
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| 106 | ## N-I osh stdout-json: ""
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| 107 | ## N-I osh status: 1
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| 108 |
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| 109 | #### ! turns non-zero into zero
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| 110 | ! $SH -c 'exit 42'; echo $?
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| 111 | ## stdout: 0
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| 112 | ## status: 0
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| 113 |
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| 114 | #### ! turns zero into 1
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| 115 | ! $SH -c 'exit 0'; echo $?
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| 116 | ## stdout: 1
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| 117 | ## status: 0
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| 118 |
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| 119 | #### ! in if
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| 120 | if ! echo hi; then
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| 121 | echo TRUE
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| 122 | else
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| 123 | echo FALSE
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| 124 | fi
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| 125 | ## STDOUT:
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| 126 | hi
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| 127 | FALSE
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| 128 | ## END
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| 129 | ## status: 0
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| 130 |
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| 131 | #### ! with ||
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| 132 | ! echo hi || echo FAILED
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| 133 | ## STDOUT:
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| 134 | hi
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| 135 | FAILED
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| 136 | ## END
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| 137 | ## status: 0
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| 138 |
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| 139 | #### ! with { }
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| 140 | ! { echo 1; echo 2; } || echo FAILED
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| 141 | ## STDOUT:
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| 142 | 1
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| 143 | 2
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| 144 | FAILED
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| 145 | ## END
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| 146 | ## status: 0
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| 147 |
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| 148 | #### ! with ( )
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| 149 | ! ( echo 1; echo 2 ) || echo FAILED
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| 150 | ## STDOUT:
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| 151 | 1
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| 152 | 2
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| 153 | FAILED
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| 154 | ## END
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| 155 | ## status: 0
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| 156 |
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| 157 | #### ! is not a command
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| 158 | v='!'
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| 159 | $v echo hi
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| 160 | ## status: 127
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| 161 |
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| 162 | #### Evaluation of argv[0] in pipeline occurs in child
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| 163 | ${cmd=echo} hi | wc -l
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| 164 | echo "cmd=$cmd"
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| 165 | ## STDOUT:
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| 166 | 1
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| 167 | cmd=
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| 168 | ## END
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| 169 | ## BUG zsh STDOUT:
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| 170 | 1
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| 171 | cmd=echo
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| 172 | ## END
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| 173 |
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| 174 | #### bash/dash/mksh run the last command is run in its own process
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| 175 | echo hi | read line
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| 176 | echo "line=$line"
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| 177 | ## stdout: line=hi
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| 178 | ## OK bash/dash/mksh stdout: line=
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| 179 |
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| 180 | #### shopt -s lastpipe (always on in OSH)
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| 181 | shopt -s lastpipe
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| 182 | echo hi | read line
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| 183 | echo "line=$line"
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| 184 | ## stdout: line=hi
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| 185 | ## N-I dash/mksh stdout: line=
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| 186 |
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| 187 | #### shopt -s lastpipe (always on in OSH)
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| 188 | shopt -s lastpipe
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| 189 | i=0
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| 190 | seq 3 | while read line; do
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| 191 | (( i++ ))
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| 192 | done
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| 193 | echo i=$i
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| 194 | ## stdout: i=3
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| 195 | ## N-I dash/mksh stdout: i=0
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| 196 |
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| 197 |
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| 198 | #### SIGPIPE causes pipeline to die (regression for issue #295)
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| 199 | cat /dev/urandom | sleep 0.1
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| 200 | echo ${PIPESTATUS[@]}
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| 201 |
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| 202 | # hm bash gives '1 0' which seems wrong
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| 203 |
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| 204 | ## STDOUT:
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| 205 | 141 0
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| 206 | ## END
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| 207 | ## BUG bash STDOUT:
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| 208 | 1 0
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| 209 | ## END
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| 210 | ## N-I zsh stdout:
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| 211 | ## N-I dash status: 2
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| 212 | ## N-I dash stdout-json: ""
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| 213 |
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| 214 | #### Nested pipelines
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| 215 | { sleep 0.1 | seq 3; } | cat
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| 216 | { sleep 0.1 | seq 10; } | { cat | cat; } | wc -l
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| 217 | ## STDOUT:
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| 218 | 1
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| 219 | 2
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| 220 | 3
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| 221 | 10
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| 222 | ## END
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| 223 |
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| 224 | #### Pipeline in eval
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| 225 | ls /dev/null | eval 'cat | cat' | wc -l
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| 226 | ## STDOUT:
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| 227 | 1
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| 228 | ## END
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| 229 |
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| 230 |
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| 231 | #### shopt -s lastpipe and shopt -s no_last_fork interaction
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| 232 |
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| 233 | case $SH in dash) exit ;; esac
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| 234 |
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| 235 | $SH -c '
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| 236 | shopt -s lastpipe
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| 237 | set -o errexit
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| 238 | set -o pipefail
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| 239 |
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| 240 | ls | false | wc -l'
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| 241 | echo status=$?
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| 242 |
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| 243 | # Why does this give status 0? It should fail
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| 244 |
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| 245 | $SH -c '
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| 246 | shopt -s lastpipe
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| 247 | shopt -s no_fork_last # OSH only
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| 248 | set -o errexit
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| 249 | set -o pipefail
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| 250 |
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| 251 | ls | false | wc -l'
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| 252 | echo status=$?
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| 253 |
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| 254 | ## STDOUT:
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| 255 | 0
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| 256 | status=1
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| 257 | 0
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| 258 | status=1
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| 259 | ## END
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| 260 |
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| 261 | ## N-I dash STDOUT:
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| 262 | ## END
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