| 1 | ## oils_failures_allowed: 2
|
| 2 | ## compare_shells: dash bash mksh zsh
|
| 3 |
|
| 4 |
|
| 5 | # NOTE:
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| 6 | # - $! is tested in background.test.sh
|
| 7 | # - $- is tested in sh-options
|
| 8 | #
|
| 9 | # TODO: It would be nice to make a table, like:
|
| 10 | #
|
| 11 | # $$ $BASHPID $PPID $SHLVL $BASH_SUBSHELL
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| 12 | # X
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| 13 | # (Subshell, Command Sub, Pipeline, Spawn $0)
|
| 14 | #
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| 15 | # And see whether the variable changed.
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| 16 |
|
| 17 | #### $PWD is set
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| 18 | # Just test that it has a slash for now.
|
| 19 | echo $PWD | grep /
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| 20 | ## status: 0
|
| 21 |
|
| 22 | #### $PWD is not only set, but exported
|
| 23 | env | grep PWD
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| 24 | ## status: 0
|
| 25 | ## BUG mksh status: 1
|
| 26 |
|
| 27 | #### $PATH is set if unset at startup
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| 28 |
|
| 29 | # Get absolute path before changing PATH
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| 30 | sh=$(which $SH)
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| 31 |
|
| 32 | old_path=$PATH
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| 33 | unset PATH
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| 34 |
|
| 35 | # BUG: when sh=bin/osh, we can't run bin/oils_for_unix.py
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| 36 | $sh -c 'echo $PATH' > path.txt
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| 37 |
|
| 38 | PATH=$old_path
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| 39 |
|
| 40 | # looks like PATH=/usr/bin:/bin for mksh, but more complicated for others
|
| 41 | # cat path.txt
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| 42 |
|
| 43 | # should contain /usr/bin
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| 44 | if egrep -q '(^|:)/usr/bin($|:)' path.txt; then
|
| 45 | echo yes
|
| 46 | fi
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| 47 |
|
| 48 | # should contain /bin
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| 49 | if egrep -q '(^|:)/bin($|:)' path.txt ; then
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| 50 | echo yes
|
| 51 | fi
|
| 52 |
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| 53 | ## STDOUT:
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| 54 | yes
|
| 55 | yes
|
| 56 | ## END
|
| 57 |
|
| 58 |
|
| 59 | #### $HOME is NOT set
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| 60 | case $SH in *zsh) echo 'zsh sets HOME'; exit ;; esac
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| 61 |
|
| 62 | home=$(echo $HOME)
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| 63 | test "$home" = ""
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| 64 | echo status=$?
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| 65 |
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| 66 | env | grep HOME
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| 67 | echo status=$?
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| 68 |
|
| 69 | # not in interactive shell either
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| 70 | $SH -i -c 'echo $HOME' | grep /
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| 71 | echo status=$?
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| 72 |
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| 73 | ## STDOUT:
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| 74 | status=0
|
| 75 | status=1
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| 76 | status=1
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| 77 | ## END
|
| 78 | ## BUG zsh STDOUT:
|
| 79 | zsh sets HOME
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| 80 | ## END
|
| 81 |
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| 82 |
|
| 83 | #### $1 .. $9 are scoped, while $0 is not
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| 84 | fun() { echo $0 $1 $2 | sed -e 's/.*sh/sh/'; }
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| 85 | fun a b
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| 86 | ## stdout: sh a b
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| 87 | ## BUG zsh stdout: fun a b
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| 88 |
|
| 89 | #### $?
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| 90 | echo $? # starts out as 0
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| 91 | sh -c 'exit 33'
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| 92 | echo $?
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| 93 | ## STDOUT:
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| 94 | 0
|
| 95 | 33
|
| 96 | ## END
|
| 97 | ## status: 0
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| 98 |
|
| 99 | #### $#
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| 100 | set -- 1 2 3 4
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| 101 | echo $#
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| 102 | ## stdout: 4
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| 103 | ## status: 0
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| 104 |
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| 105 | #### $$ looks like a PID
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| 106 | # Just test that it has decimal digits
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| 107 | echo $$ | egrep '[0-9]+'
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| 108 | ## status: 0
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| 109 |
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| 110 | #### $$ doesn't change with subshell or command sub
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| 111 | # Just test that it has decimal digits
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| 112 | set -o errexit
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| 113 | die() {
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| 114 | echo 1>&2 "$@"; exit 1
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| 115 | }
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| 116 | parent=$$
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| 117 | test -n "$parent" || die "empty PID in parent"
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| 118 | ( child=$$
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| 119 | test -n "$child" || die "empty PID in subshell"
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| 120 | test "$parent" = "$child" || die "should be equal: $parent != $child"
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| 121 | echo 'subshell OK'
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| 122 | )
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| 123 | echo $( child=$$
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| 124 | test -n "$child" || die "empty PID in command sub"
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| 125 | test "$parent" = "$child" || die "should be equal: $parent != $child"
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| 126 | echo 'command sub OK'
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| 127 | )
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| 128 | exit 3 # make sure we got here
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| 129 | ## status: 3
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| 130 | ## STDOUT:
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| 131 | subshell OK
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| 132 | command sub OK
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| 133 | ## END
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| 134 |
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| 135 | #### $BASHPID DOES change with subshell and command sub
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| 136 | set -o errexit
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| 137 | die() {
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| 138 | echo 1>&2 "$@"; exit 1
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| 139 | }
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| 140 | parent=$BASHPID
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| 141 | test -n "$parent" || die "empty BASHPID in parent"
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| 142 | ( child=$BASHPID
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| 143 | test -n "$child" || die "empty BASHPID in subshell"
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| 144 | test "$parent" != "$child" || die "should not be equal: $parent = $child"
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| 145 | echo 'subshell OK'
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| 146 | )
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| 147 | echo $( child=$BASHPID
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| 148 | test -n "$child" || die "empty BASHPID in command sub"
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| 149 | test "$parent" != "$child" ||
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| 150 | die "should not be equal: $parent = $child"
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| 151 | echo 'command sub OK'
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| 152 | )
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| 153 | exit 3 # make sure we got here
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| 154 |
|
| 155 | # mksh also implements BASHPID!
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| 156 |
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| 157 | ## status: 3
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| 158 | ## STDOUT:
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| 159 | subshell OK
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| 160 | command sub OK
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| 161 | ## END
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| 162 | ## N-I dash/zsh status: 1
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| 163 | ## N-I dash/zsh stdout-json: ""
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| 164 |
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| 165 | #### Background PID $! looks like a PID
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| 166 | sleep 0.01 &
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| 167 | pid=$!
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| 168 | wait
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| 169 | echo $pid | egrep '[0-9]+' >/dev/null
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| 170 | echo status=$?
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| 171 | ## stdout: status=0
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| 172 |
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| 173 | #### $PPID
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| 174 | echo $PPID | egrep '[0-9]+'
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| 175 | ## status: 0
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| 176 |
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| 177 | # NOTE: There is also $BASHPID
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| 178 |
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| 179 | #### $PIPESTATUS
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| 180 | echo hi | sh -c 'cat; exit 33' | wc -l >/dev/null
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| 181 | argv.py "${PIPESTATUS[@]}"
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| 182 | ## status: 0
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| 183 | ## STDOUT:
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| 184 | ['0', '33', '0']
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| 185 | ## END
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| 186 | ## N-I dash stdout-json: ""
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| 187 | ## N-I dash status: 2
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| 188 | ## N-I zsh STDOUT:
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| 189 | ['']
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| 190 | ## END
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| 191 |
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| 192 | #### $RANDOM
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| 193 | expr $0 : '.*/osh$' && exit 99 # Disabled because of spec-runner.sh issue
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| 194 | echo $RANDOM | egrep '[0-9]+'
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| 195 | ## status: 0
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| 196 | ## N-I dash status: 1
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| 197 |
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| 198 | #### $UID and $EUID
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| 199 | # These are both bash-specific.
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| 200 | set -o errexit
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| 201 | echo $UID | egrep -o '[0-9]+' >/dev/null
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| 202 | echo $EUID | egrep -o '[0-9]+' >/dev/null
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| 203 | echo status=$?
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| 204 | ## stdout: status=0
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| 205 | ## N-I dash/mksh stdout-json: ""
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| 206 | ## N-I dash/mksh status: 1
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| 207 |
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| 208 | #### $OSTYPE is non-empty
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| 209 | test -n "$OSTYPE"
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| 210 | echo status=$?
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| 211 | ## STDOUT:
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| 212 | status=0
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| 213 | ## END
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| 214 | ## N-I dash/mksh STDOUT:
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| 215 | status=1
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| 216 | ## END
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| 217 |
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| 218 | #### $HOSTNAME
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| 219 | test "$HOSTNAME" = "$(hostname)"
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| 220 | echo status=$?
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| 221 | ## STDOUT:
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| 222 | status=0
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| 223 | ## END
|
| 224 | ## N-I dash/mksh/zsh STDOUT:
|
| 225 | status=1
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| 226 | ## END
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| 227 |
|
| 228 | #### $LINENO is the current line, not line of function call
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| 229 | echo $LINENO # first line
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| 230 | g() {
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| 231 | argv.py $LINENO # line 3
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| 232 | }
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| 233 | f() {
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| 234 | argv.py $LINENO # line 6
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| 235 | g
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| 236 | argv.py $LINENO # line 8
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| 237 | }
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| 238 | f
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| 239 | ## STDOUT:
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| 240 | 1
|
| 241 | ['6']
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| 242 | ['3']
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| 243 | ['8']
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| 244 | ## END
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| 245 | ## BUG zsh STDOUT:
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| 246 | 1
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| 247 | ['1']
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| 248 | ['1']
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| 249 | ['3']
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| 250 | ## END
|
| 251 | ## BUG dash STDOUT:
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| 252 | 1
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| 253 | ['2']
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| 254 | ['2']
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| 255 | ['4']
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| 256 | ## END
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| 257 |
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| 258 | #### $LINENO in "bare" redirect arg (bug regression)
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| 259 | filename=$TMP/bare3
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| 260 | rm -f $filename
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| 261 | > $TMP/bare$LINENO
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| 262 | test -f $filename && echo written
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| 263 | echo $LINENO
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| 264 | ## STDOUT:
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| 265 | written
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| 266 | 5
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| 267 | ## END
|
| 268 | ## BUG zsh STDOUT:
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| 269 | ## END
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| 270 |
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| 271 | #### $LINENO in redirect arg (bug regression)
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| 272 | filename=$TMP/lineno_regression3
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| 273 | rm -f $filename
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| 274 | echo x > $TMP/lineno_regression$LINENO
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| 275 | test -f $filename && echo written
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| 276 | echo $LINENO
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| 277 | ## STDOUT:
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| 278 | written
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| 279 | 5
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| 280 | ## END
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| 281 |
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| 282 | #### $LINENO in [[
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| 283 | echo one
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| 284 | [[ $LINENO -eq 2 ]] && echo OK
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| 285 | ## STDOUT:
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| 286 | one
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| 287 | OK
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| 288 | ## END
|
| 289 | ## N-I dash status: 127
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| 290 | ## N-I dash stdout: one
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| 291 | ## N-I mksh status: 1
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| 292 | ## N-I mksh stdout: one
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| 293 |
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| 294 | #### $LINENO in ((
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| 295 | echo one
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| 296 | (( x = LINENO ))
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| 297 | echo $x
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| 298 | ## STDOUT:
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| 299 | one
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| 300 | 2
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| 301 | ## END
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| 302 | ## N-I dash stdout-json: "one\n\n"
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| 303 |
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| 304 | #### $LINENO in for loop
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| 305 | # hm bash doesn't take into account the word break. That's OK; we won't either.
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| 306 | echo one
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| 307 | for x in \
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| 308 | $LINENO zzz; do
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| 309 | echo $x
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| 310 | done
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| 311 | ## STDOUT:
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| 312 | one
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| 313 | 2
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| 314 | zzz
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| 315 | ## END
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| 316 | ## OK mksh STDOUT:
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| 317 | one
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| 318 | 1
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| 319 | zzz
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| 320 | ## END
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| 321 |
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| 322 | #### $LINENO in other for loops
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| 323 | set -- a b c
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| 324 | for x; do
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| 325 | echo $LINENO $x
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| 326 | done
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| 327 | ## STDOUT:
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| 328 | 3 a
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| 329 | 3 b
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| 330 | 3 c
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| 331 | ## END
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| 332 |
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| 333 | #### $LINENO in for (( loop
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| 334 | # This is a real edge case that I'm not sure we care about. We would have to
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| 335 | # change the span ID inside the loop to make it really correct.
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| 336 | echo one
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| 337 | for (( i = 0; i < $LINENO; i++ )); do
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| 338 | echo $i
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| 339 | done
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| 340 | ## STDOUT:
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| 341 | one
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| 342 | 0
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| 343 | 1
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| 344 | ## END
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| 345 | ## N-I dash stdout: one
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| 346 | ## N-I dash status: 2
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| 347 | ## BUG mksh stdout: one
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| 348 | ## BUG mksh status: 1
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| 349 |
|
| 350 | #### $LINENO for assignment
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| 351 | a1=$LINENO a2=$LINENO
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| 352 | b1=$LINENO b2=$LINENO
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| 353 | echo $a1 $a2
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| 354 | echo $b1 $b2
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| 355 | ## STDOUT:
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| 356 | 1 1
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| 357 | 2 2
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| 358 | ## END
|
| 359 |
|
| 360 | #### $LINENO in case
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| 361 | case $LINENO in
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| 362 | 1) echo 'got line 1' ;;
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| 363 | *) echo line=$LINENO
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| 364 | esac
|
| 365 | ## STDOUT:
|
| 366 | got line 1
|
| 367 | ## END
|
| 368 | ## BUG mksh STDOUT:
|
| 369 | line=3
|
| 370 | ## END
|
| 371 |
|
| 372 | #### $_ with simple command and evaluation
|
| 373 |
|
| 374 | name=world
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| 375 | echo "hi $name"
|
| 376 | echo "$_"
|
| 377 | ## STDOUT:
|
| 378 | hi world
|
| 379 | hi world
|
| 380 | ## END
|
| 381 | ## N-I dash/mksh STDOUT:
|
| 382 | hi world
|
| 383 |
|
| 384 | ## END
|
| 385 |
|
| 386 | #### $_ and ${_}
|
| 387 | case $SH in (dash|mksh) exit ;; esac
|
| 388 |
|
| 389 | _var=value
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| 390 |
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| 391 | : 42
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| 392 | echo $_ $_var ${_}var
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| 393 |
|
| 394 | : 'foo'"bar"
|
| 395 | echo $_
|
| 396 |
|
| 397 | ## STDOUT:
|
| 398 | 42 value 42var
|
| 399 | foobar
|
| 400 | ## END
|
| 401 | ## N-I dash/mksh stdout-json: ""
|
| 402 |
|
| 403 | #### $_ with word splitting
|
| 404 | case $SH in (dash|mksh) exit ;; esac
|
| 405 |
|
| 406 | setopt shwordsplit # for ZSH
|
| 407 |
|
| 408 | x='with spaces'
|
| 409 | : $x
|
| 410 | echo $_
|
| 411 |
|
| 412 | ## STDOUT:
|
| 413 | spaces
|
| 414 | ## END
|
| 415 | ## N-I dash/mksh stdout-json: ""
|
| 416 |
|
| 417 | #### $_ with pipeline and subshell
|
| 418 | case $SH in (dash|mksh) exit ;; esac
|
| 419 |
|
| 420 | shopt -s lastpipe
|
| 421 |
|
| 422 | seq 3 | echo last=$_
|
| 423 |
|
| 424 | echo pipeline=$_
|
| 425 |
|
| 426 | ( echo subshell=$_ )
|
| 427 | echo done=$_
|
| 428 |
|
| 429 | ## STDOUT:
|
| 430 | last=
|
| 431 | pipeline=last=
|
| 432 | subshell=pipeline=last=
|
| 433 | done=pipeline=last=
|
| 434 | ## END
|
| 435 |
|
| 436 | # very weird semantics for zsh!
|
| 437 | ## OK zsh STDOUT:
|
| 438 | last=3
|
| 439 | pipeline=last=3
|
| 440 | subshell=
|
| 441 | done=
|
| 442 | ## END
|
| 443 |
|
| 444 | ## N-I dash/mksh stdout-json: ""
|
| 445 |
|
| 446 |
|
| 447 | #### $_ with && and ||
|
| 448 | case $SH in (dash|mksh) exit ;; esac
|
| 449 |
|
| 450 | echo hi && echo last=$_
|
| 451 | echo and=$_
|
| 452 |
|
| 453 | echo hi || echo last=$_
|
| 454 | echo or=$_
|
| 455 |
|
| 456 | ## STDOUT:
|
| 457 | hi
|
| 458 | last=hi
|
| 459 | and=last=hi
|
| 460 | hi
|
| 461 | or=hi
|
| 462 | ## END
|
| 463 |
|
| 464 | ## N-I dash/mksh stdout-json: ""
|
| 465 |
|
| 466 | #### $_ is not reset with (( and [[
|
| 467 |
|
| 468 | # bash is inconsistent because it does it for pipelines and assignments, but
|
| 469 | # not (( and [[
|
| 470 |
|
| 471 | case $SH in (dash|mksh) exit ;; esac
|
| 472 |
|
| 473 | echo simple
|
| 474 | (( a = 2 + 3 ))
|
| 475 | echo "(( $_"
|
| 476 |
|
| 477 | [[ a == *.py ]]
|
| 478 | echo "[[ $_"
|
| 479 |
|
| 480 | ## STDOUT:
|
| 481 | simple
|
| 482 | (( simple
|
| 483 | [[ (( simple
|
| 484 | ## END
|
| 485 |
|
| 486 | ## N-I dash/mksh stdout-json: ""
|
| 487 |
|
| 488 |
|
| 489 | #### $_ with assignments, arrays, etc.
|
| 490 | case $SH in (dash|mksh) exit ;; esac
|
| 491 |
|
| 492 | : foo
|
| 493 | echo "colon [$_]"
|
| 494 |
|
| 495 | s=bar
|
| 496 | echo "bare assign [$_]"
|
| 497 |
|
| 498 | # zsh uses declare; bash uses s=bar
|
| 499 | declare s=bar
|
| 500 | echo "declare [$_]"
|
| 501 |
|
| 502 | # zsh remains s:declare, bash resets it
|
| 503 | a=(1 2)
|
| 504 | echo "array [$_]"
|
| 505 |
|
| 506 | # zsh sets it to declare, bash uses the LHS a
|
| 507 | declare a=(1 2)
|
| 508 | echo "declare array [$_]"
|
| 509 |
|
| 510 | declare -g d=(1 2)
|
| 511 | echo "declare flag [$_]"
|
| 512 |
|
| 513 | ## STDOUT:
|
| 514 | colon [foo]
|
| 515 | bare assign []
|
| 516 | declare [s=bar]
|
| 517 | array []
|
| 518 | declare array [a]
|
| 519 | declare flag [d]
|
| 520 | ## END
|
| 521 |
|
| 522 | ## OK zsh STDOUT:
|
| 523 | colon [foo]
|
| 524 | bare assign []
|
| 525 | declare [declare]
|
| 526 | array [declare [declare]]
|
| 527 | declare array [declare]
|
| 528 | declare flag [-g]
|
| 529 | ## END
|
| 530 |
|
| 531 | ## OK osh STDOUT:
|
| 532 | colon [foo]
|
| 533 | bare assign [colon [foo]]
|
| 534 | declare [bare assign [colon [foo]]]
|
| 535 | array [declare [bare assign [colon [foo]]]]
|
| 536 | declare array [array [declare [bare assign [colon [foo]]]]]
|
| 537 | declare flag [declare array [array [declare [bare assign [colon [foo]]]]]]
|
| 538 | ## END
|
| 539 |
|
| 540 | ## N-I dash/mksh stdout-json: ""
|
| 541 |
|
| 542 | #### $_ with loop
|
| 543 |
|
| 544 | case $SH in (dash|mksh) exit ;; esac
|
| 545 |
|
| 546 | # zsh resets it when in a loop
|
| 547 |
|
| 548 | echo init
|
| 549 | echo begin=$_
|
| 550 | for x in 1 2 3; do
|
| 551 | echo prev=$_
|
| 552 | done
|
| 553 |
|
| 554 | ## STDOUT:
|
| 555 | init
|
| 556 | begin=init
|
| 557 | prev=begin=init
|
| 558 | prev=prev=begin=init
|
| 559 | prev=prev=prev=begin=init
|
| 560 | ## END
|
| 561 |
|
| 562 | ## OK zsh STDOUT:
|
| 563 | init
|
| 564 | begin=init
|
| 565 | prev=
|
| 566 | prev=prev=
|
| 567 | prev=prev=prev=
|
| 568 | ## END
|
| 569 | ## N-I dash/mksh stdout-json: ""
|
| 570 |
|
| 571 |
|
| 572 | #### $_ is not undefined on first use
|
| 573 | set -e
|
| 574 |
|
| 575 | x=$($SH -u -c 'echo prev=$_')
|
| 576 | echo status=$?
|
| 577 |
|
| 578 | # bash and mksh set $_ to $0 at first; zsh is empty
|
| 579 | #echo "$x"
|
| 580 |
|
| 581 | ## STDOUT:
|
| 582 | status=0
|
| 583 | ## END
|
| 584 |
|
| 585 | ## N-I dash status: 2
|
| 586 | ## N-I dash stdout-json: ""
|
| 587 |
|
| 588 | #### BASH_VERSION / OILS_VERSION
|
| 589 | case $SH in
|
| 590 | bash)
|
| 591 | # BASH_VERSION=zz
|
| 592 |
|
| 593 | echo $BASH_VERSION | egrep -o '4\.4\.0' > /dev/null
|
| 594 | echo matched=$?
|
| 595 | ;;
|
| 596 | *osh)
|
| 597 | # note: version string is mutable like in bash. I guess that's useful for
|
| 598 | # testing? We might want a strict mode to eliminate that?
|
| 599 |
|
| 600 | echo $OILS_VERSION | egrep -o '[0-9]+\.[0-9]+\.' > /dev/null
|
| 601 | echo matched=$?
|
| 602 | ;;
|
| 603 | *)
|
| 604 | echo 'no version'
|
| 605 | ;;
|
| 606 | esac
|
| 607 | ## STDOUT:
|
| 608 | matched=0
|
| 609 | ## END
|
| 610 | ## N-I dash/mksh/zsh STDOUT:
|
| 611 | no version
|
| 612 | ## END
|
| 613 |
|
| 614 | #### $SECONDS
|
| 615 |
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| 616 | # should be zero seconds
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| 617 | echo seconds=$SECONDS
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| 618 |
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| 619 | ## status: 0
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| 620 | ## STDOUT:
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| 621 | seconds=0
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| 622 | ## END
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| 623 | ## N-I dash STDOUT:
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| 624 | seconds=
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| 625 | ## END
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