| 1 | ## compare_shells: bash dash mksh zsh
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| 2 | ## oils_failures_allowed: 1
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| 3 |
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| 4 | #### ~ expansion in assignment
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| 5 | HOME=/home/bob
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| 6 | a=~/src
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| 7 | echo $a
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| 8 | ## stdout: /home/bob/src
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| 9 |
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| 10 | #### ~ expansion in readonly assignment
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| 11 | # dash fails here!
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| 12 | # http://stackoverflow.com/questions/8441473/tilde-expansion-doesnt-work-when-i-logged-into-gui
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| 13 | HOME=/home/bob
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| 14 | readonly const=~/src
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| 15 | echo $const
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| 16 | ## stdout: /home/bob/src
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| 17 | ## BUG dash stdout: ~/src
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| 18 |
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| 19 | #### No ~ expansion in dynamic assignment
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| 20 | HOME=/home/bob
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| 21 | binding='const=~/src'
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| 22 | readonly "$binding"
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| 23 | echo $const
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| 24 | ## stdout: ~/src
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| 25 |
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| 26 | #### No tilde expansion in word that looks like assignment but isn't
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| 27 | # bash and mksh mistakenly expand here!
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| 28 | # bash fixes this in POSIX mode (gah).
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| 29 | # http://lists.gnu.org/archive/html/bug-bash/2016-06/msg00001.html
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| 30 | HOME=/home/bob
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| 31 | echo x=~
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| 32 | ## stdout: x=~
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| 33 | ## BUG bash/mksh stdout: x=/home/bob
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| 34 |
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| 35 | #### tilde expansion of word after redirect
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| 36 | HOME=$TMP
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| 37 | echo hi > ~/tilde1.txt
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| 38 | cat $HOME/tilde1.txt | wc -c
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| 39 | ## stdout: 3
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| 40 | ## status: 0
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| 41 |
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| 42 | #### other user
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| 43 | echo ~nonexistent
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| 44 | ## stdout: ~nonexistent
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| 45 | # zsh doesn't like nonexistent
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| 46 | ## OK zsh stdout-json: ""
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| 47 | ## OK zsh status: 1
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| 48 |
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| 49 | #### ${undef:-~}
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| 50 | HOME=/home/bar
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| 51 | echo ${undef:-~}
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| 52 | echo ${HOME:+~/z}
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| 53 | echo "${undef:-~}"
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| 54 | echo ${undef:-"~"}
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| 55 | ## STDOUT:
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| 56 | /home/bar
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| 57 | /home/bar/z
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| 58 | ~
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| 59 | ~
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| 60 | ## END
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| 61 |
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| 62 | #### ${x//~/~root}
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| 63 | HOME=/home/bar
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| 64 | x=~
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| 65 | echo ${x//~/~root}
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| 66 |
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| 67 | # gah there is some expansion, what the hell
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| 68 | echo ${HOME//~/~root}
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| 69 |
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| 70 | x=[$HOME]
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| 71 | echo ${x//~/~root}
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| 72 |
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| 73 | ## STDOUT:
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| 74 | /root
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| 75 | /root
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| 76 | [/root]
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| 77 | ## END
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| 78 | ## N-I dash status: 2
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| 79 | ## N-I dash stdout-json: ""
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| 80 |
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| 81 | #### x=foo:~ has tilde expansion
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| 82 | HOME=/home/bar
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| 83 | x=foo:~
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| 84 | echo $x
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| 85 | echo "$x" # quotes don't matter, the expansion happens on assignment?
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| 86 | x='foo:~'
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| 87 | echo $x
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| 88 |
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| 89 | x=foo:~, # comma ruins it, must be /
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| 90 | echo $x
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| 91 |
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| 92 | x=~:foo
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| 93 | echo $x
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| 94 |
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| 95 | # no tilde expansion here
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| 96 | echo foo:~
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| 97 | ## STDOUT:
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| 98 | foo:/home/bar
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| 99 | foo:/home/bar
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| 100 | foo:~
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| 101 | foo:~,
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| 102 | /home/bar:foo
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| 103 | foo:~
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| 104 | ## END
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| 105 |
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| 106 | #### a[x]=foo:~ has tilde expansion
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| 107 | case $SH in (dash|zsh) exit ;; esac
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| 108 |
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| 109 | HOME=/home/bar
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| 110 | declare -a a
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| 111 | a[0]=foo:~
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| 112 | echo ${a[0]}
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| 113 |
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| 114 | declare -A A
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| 115 | A['x']=foo:~
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| 116 | echo ${A['x']}
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| 117 |
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| 118 | ## STDOUT:
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| 119 | foo:/home/bar
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| 120 | foo:/home/bar
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| 121 | ## END
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| 122 | ## N-I dash/zsh stdout-json: ""
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| 123 |
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| 124 | #### tilde expansion an assignment keyword
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| 125 | HOME=/home/bar
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| 126 | f() {
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| 127 | local x=foo:~
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| 128 | echo $x
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| 129 | }
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| 130 | f
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| 131 | ## STDOUT:
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| 132 | foo:/home/bar
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| 133 | ## END
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| 134 | ## BUG dash STDOUT:
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| 135 | foo:~
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| 136 | ## END
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| 137 |
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| 138 | #### x=${undef-~:~}
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| 139 | HOME=/home/bar
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| 140 |
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| 141 | x=~:${undef-~:~}
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| 142 | echo $x
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| 143 |
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| 144 | # Most shells agree on a different behavior, but with the OSH parsing model,
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| 145 | # it's easier to agree with yash. bash disagrees in a different way
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| 146 |
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| 147 | ## OK bash STDOUT:
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| 148 | /home/bar:/home/bar:~
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| 149 | ## END
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| 150 | ## OK osh/yash STDOUT:
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| 151 | /home/bar:~:~
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| 152 | ## END
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| 153 | ## STDOUT:
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| 154 | /home/bar:/home/bar:/home/bar
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| 155 | ## END
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| 156 |
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| 157 | #### strict tilde
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| 158 | echo ~nonexistent
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| 159 |
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| 160 | shopt -s strict_tilde
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| 161 | echo ~nonexistent
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| 162 |
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| 163 | echo status=$?
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| 164 | ## status: 1
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| 165 | ## STDOUT:
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| 166 | ~nonexistent
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| 167 | ## END
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| 168 | ## N-I bash/dash/mksh status: 0
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| 169 | ## N-I bash/dash/mksh STDOUT:
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| 170 | ~nonexistent
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| 171 | ~nonexistent
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| 172 | status=0
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| 173 | ## END
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| 174 | ## OK zsh stdout-json: ""
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| 175 |
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| 176 | #### temp assignment x=~ env
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| 177 |
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| 178 | HOME=/home/bar
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| 179 |
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| 180 | xx=~ env | grep xx=
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| 181 |
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| 182 | # Does it respect the colon rule too?
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| 183 | xx=~root:~:~ env | grep xx=
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| 184 |
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| 185 | ## STDOUT:
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| 186 | xx=/home/bar
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| 187 | xx=/root:/home/bar:/home/bar
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| 188 | ## END
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