| 1 | ## compare_shells: dash bash mksh ash
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| 2 |
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| 3 | #### getopts empty
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| 4 | set --
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| 5 | getopts 'a:' opt
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| 6 | echo "status=$? opt=$opt OPTARG=$OPTARG"
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| 7 | ## stdout: status=1 opt=? OPTARG=
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| 8 |
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| 9 | #### getopts sees unknown arg
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| 10 | set -- -Z
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| 11 | getopts 'a:' opt
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| 12 | echo "status=$? opt=$opt OPTARG=$OPTARG"
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| 13 | ## stdout: status=0 opt=? OPTARG=
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| 14 |
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| 15 | #### getopts three invocations
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| 16 | set -- -h -c foo
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| 17 | getopts 'hc:' opt
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| 18 | echo status=$? opt=$opt
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| 19 | getopts 'hc:' opt
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| 20 | echo status=$? opt=$opt
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| 21 | getopts 'hc:' opt
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| 22 | echo status=$? opt=$opt
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| 23 | ## STDOUT:
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| 24 | status=0 opt=h
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| 25 | status=0 opt=c
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| 26 | status=1 opt=?
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| 27 | ## END
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| 28 |
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| 29 | #### getopts resets OPTARG
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| 30 | set -- -c foo -h
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| 31 | getopts 'hc:' opt
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| 32 | echo status=$? opt=$opt OPTARG=$OPTARG
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| 33 | getopts 'hc:' opt
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| 34 | echo status=$? opt=$opt OPTARG=$OPTARG
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| 35 | ## STDOUT:
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| 36 | status=0 opt=c OPTARG=foo
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| 37 | status=0 opt=h OPTARG=
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| 38 | ## END
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| 39 |
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| 40 | #### Basic getopts invocation
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| 41 | set -- -h -c foo x y z
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| 42 | FLAG_h=0
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| 43 | FLAG_c=''
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| 44 | while getopts "hc:" opt; do
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| 45 | case $opt in
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| 46 | h) FLAG_h=1 ;;
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| 47 | c) FLAG_c="$OPTARG" ;;
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| 48 | esac
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| 49 | done
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| 50 | shift $(( OPTIND - 1 ))
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| 51 | echo h=$FLAG_h c=$FLAG_c optind=$OPTIND argv=$@
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| 52 | ## stdout: h=1 c=foo optind=4 argv=x y z
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| 53 |
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| 54 | #### getopts with invalid variable name
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| 55 | set -- -c foo -h
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| 56 | getopts 'hc:' opt-
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| 57 | echo status=$? opt=$opt OPTARG=$OPTARG OPTIND=$OPTIND
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| 58 | ## stdout: status=2 opt= OPTARG=foo OPTIND=3
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| 59 | ## OK bash stdout: status=1 opt= OPTARG=foo OPTIND=3
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| 60 | ## OK mksh stdout: status=1 opt= OPTARG= OPTIND=1
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| 61 |
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| 62 | #### getopts with invalid flag
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| 63 | set -- -h -x
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| 64 | while getopts "hc:" opt; do
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| 65 | case $opt in
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| 66 | h) FLAG_h=1 ;;
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| 67 | c) FLAG_c="$OPTARG" ;;
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| 68 | '?') echo ERROR $OPTIND; exit 2; ;;
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| 69 | esac
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| 70 | done
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| 71 | echo status=$?
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| 72 | ## stdout: ERROR 3
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| 73 | ## status: 2
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| 74 |
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| 75 | #### getopts with with -
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| 76 | set -- -h -
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| 77 | echo "$@"
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| 78 | while getopts "hc:" opt; do
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| 79 | case $opt in
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| 80 | h) FLAG_h=1 ;;
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| 81 | c) FLAG_c="$OPTARG" ;;
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| 82 | '?') echo ERROR $OPTIND; exit 2; ;;
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| 83 | esac
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| 84 | done
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| 85 | echo status=$?
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| 86 | ## STDOUT:
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| 87 | -h -
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| 88 | status=0
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| 89 | ## END
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| 90 |
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| 91 | #### getopts missing required argument
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| 92 | set -- -h -c
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| 93 | while getopts "hc:" opt; do
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| 94 | case $opt in
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| 95 | h) FLAG_h=1 ;;
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| 96 | c) FLAG_c="$OPTARG" ;;
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| 97 | '?') echo ERROR $OPTIND; exit 2; ;;
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| 98 | esac
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| 99 | done
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| 100 | echo status=$?
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| 101 | ## stdout: ERROR 3
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| 102 | ## status: 2
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| 103 |
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| 104 | #### getopts doesn't look for flags after args
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| 105 | set -- x -h -c y
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| 106 | FLAG_h=0
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| 107 | FLAG_c=''
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| 108 | while getopts "hc:" opt; do
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| 109 | case $opt in
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| 110 | h) FLAG_h=1 ;;
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| 111 | c) FLAG_c="$OPTARG" ;;
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| 112 | esac
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| 113 | done
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| 114 | shift $(( OPTIND - 1 ))
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| 115 | echo h=$FLAG_h c=$FLAG_c optind=$OPTIND argv=$@
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| 116 | ## stdout: h=0 c= optind=1 argv=x -h -c y
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| 117 |
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| 118 | #### getopts with explicit args
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| 119 | # NOTE: Alpine doesn't appear to use this, but bash-completion does.
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| 120 | FLAG_h=0
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| 121 | FLAG_c=''
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| 122 | arg=''
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| 123 | set -- A B C
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| 124 | while getopts "hc:" opt -h -c foo x y z; do
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| 125 | case $opt in
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| 126 | h) FLAG_h=1 ;;
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| 127 | c) FLAG_c="$OPTARG" ;;
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| 128 | esac
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| 129 | done
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| 130 | echo h=$FLAG_h c=$FLAG_c optind=$OPTIND argv=$@
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| 131 | ## STDOUT:
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| 132 | h=1 c=foo optind=4 argv=A B C
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| 133 | ## END
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| 134 |
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| 135 | #### OPTIND
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| 136 | echo $OPTIND
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| 137 | ## stdout: 1
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| 138 |
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| 139 | #### OPTIND after multiple getopts with same spec
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| 140 | while getopts "hc:" opt; do
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| 141 | echo '-'
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| 142 | done
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| 143 | echo $OPTIND
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| 144 |
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| 145 | set -- -h -c foo x y z
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| 146 | while getopts "hc:" opt; do
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| 147 | echo '-'
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| 148 | done
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| 149 | echo $OPTIND
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| 150 |
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| 151 | set --
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| 152 | while getopts "hc:" opt; do
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| 153 | echo '-'
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| 154 | done
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| 155 | echo $OPTIND
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| 156 | ## stdout-json: "1\n-\n-\n4\n1\n"
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| 157 | ## BUG mksh/osh stdout-json: "1\n-\n-\n4\n4\n"
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| 158 |
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| 159 | #### OPTIND after multiple getopts with different spec
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| 160 | # Wow this is poorly specified! A fundamental design problem with the global
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| 161 | # variable OPTIND.
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| 162 | set -- -a
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| 163 | while getopts "ab:" opt; do
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| 164 | echo '.'
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| 165 | done
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| 166 | echo $OPTIND
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| 167 |
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| 168 | set -- -c -d -e foo
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| 169 | while getopts "cde:" opt; do
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| 170 | echo '-'
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| 171 | done
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| 172 | echo $OPTIND
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| 173 |
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| 174 | set -- -f
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| 175 | while getopts "f:" opt; do
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| 176 | echo '_'
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| 177 | done
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| 178 | echo $OPTIND
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| 179 | ## stdout-json: ".\n2\n-\n-\n5\n2\n"
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| 180 | ## BUG ash/dash stdout-json: ".\n2\n-\n-\n-\n5\n_\n2\n"
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| 181 | ## BUG mksh/osh stdout-json: ".\n2\n-\n-\n5\n5\n"
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| 182 |
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| 183 | #### OPTIND narrowed down
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| 184 | FLAG_a=
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| 185 | FLAG_b=
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| 186 | FLAG_c=
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| 187 | FLAG_d=
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| 188 | FLAG_e=
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| 189 | set -- -a
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| 190 | while getopts "ab:" opt; do
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| 191 | case $opt in
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| 192 | a) FLAG_a=1 ;;
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| 193 | b) FLAG_b="$OPTARG" ;;
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| 194 | esac
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| 195 | done
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| 196 | # Bash doesn't reset optind! It skips over c! mksh at least warns about this!
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| 197 | # You have to reset OPTIND yourself.
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| 198 |
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| 199 | set -- -c -d -e E
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| 200 | while getopts "cde:" opt; do
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| 201 | case $opt in
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| 202 | c) FLAG_c=1 ;;
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| 203 | d) FLAG_d=1 ;;
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| 204 | e) FLAG_e="$OPTARG" ;;
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| 205 | esac
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| 206 | done
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| 207 |
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| 208 | echo a=$FLAG_a b=$FLAG_b c=$FLAG_c d=$FLAG_d e=$FLAG_e
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| 209 | ## stdout: a=1 b= c=1 d=1 e=E
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| 210 | ## BUG bash/mksh/osh stdout: a=1 b= c= d=1 e=E
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| 211 |
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| 212 |
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| 213 | #### Getopts parses the function's arguments
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| 214 | FLAG_h=0
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| 215 | FLAG_c=''
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| 216 | myfunc() {
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| 217 | while getopts "hc:" opt; do
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| 218 | case $opt in
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| 219 | h) FLAG_h=1 ;;
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| 220 | c) FLAG_c="$OPTARG" ;;
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| 221 | esac
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| 222 | done
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| 223 | }
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| 224 | set -- -h -c foo x y z
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| 225 | myfunc -c bar
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| 226 | echo h=$FLAG_h c=$FLAG_c opt=$opt optind=$OPTIND argv=$@
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| 227 | ## stdout: h=0 c=bar opt=? optind=3 argv=-h -c foo x y z
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| 228 |
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| 229 | #### Local OPTIND
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| 230 | # minimal test case extracted from bash-completion
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| 231 | min() {
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| 232 | local OPTIND=1
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| 233 |
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| 234 | while getopts "n:e:o:i:s" flag "$@"; do
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| 235 | echo "loop $OPTIND";
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| 236 | done
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| 237 | }
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| 238 | min -s
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| 239 | ## stdout: loop 2
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| 240 |
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| 241 | #### two flags: -ab
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| 242 | getopts "ab" opt -ab
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| 243 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 244 | getopts "ab" opt -ab
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| 245 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 246 | ## STDOUT:
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| 247 | OPTIND=1 opt=a OPTARG=
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| 248 | OPTIND=2 opt=b OPTARG=
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| 249 | ## END
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| 250 | ## OK dash/mksh/ash STDOUT:
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| 251 | OPTIND=2 opt=a OPTARG=
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| 252 | OPTIND=2 opt=b OPTARG=
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| 253 | ## END
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| 254 |
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| 255 | #### flag and arg: -c10
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| 256 | getopts "c:" opt -c10
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| 257 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 258 | getopts "c:" opt -c10
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| 259 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 260 | ## STDOUT:
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| 261 | OPTIND=2 opt=c OPTARG=10
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| 262 | OPTIND=2 opt=? OPTARG=
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| 263 | ## END
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| 264 | ## BUG dash STDOUT:
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| 265 | OPTIND=2 opt=c OPTARG=10
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| 266 | OPTIND=2 opt=? OPTARG=10
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| 267 | ## END
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| 268 |
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| 269 | #### More Smooshing 1
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| 270 | getopts "ab:c:" opt -ab hi -c hello
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| 271 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 272 | getopts "ab:c:" opt -ab hi -c hello
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| 273 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 274 | getopts "ab:c:" opt -ab hi -c hello
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| 275 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 276 | ## STDOUT:
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| 277 | OPTIND=1 opt=a OPTARG=
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| 278 | OPTIND=3 opt=b OPTARG=hi
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| 279 | OPTIND=5 opt=c OPTARG=hello
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| 280 | ## END
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| 281 | ## OK dash/mksh/ash STDOUT:
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| 282 | OPTIND=2 opt=a OPTARG=
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| 283 | OPTIND=3 opt=b OPTARG=hi
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| 284 | OPTIND=5 opt=c OPTARG=hello
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| 285 | ## END
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| 286 |
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| 287 | #### More Smooshing 2
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| 288 | getopts "abc:" opt -abc10
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| 289 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 290 | getopts "abc:" opt -abc10
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| 291 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 292 | getopts "abc:" opt -abc10
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| 293 | echo OPTIND=$OPTIND opt=$opt OPTARG=$OPTARG
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| 294 | ## STDOUT:
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| 295 | OPTIND=1 opt=a OPTARG=
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| 296 | OPTIND=1 opt=b OPTARG=
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| 297 | OPTIND=2 opt=c OPTARG=10
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| 298 | ## END
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| 299 | ## OK dash/mksh/ash STDOUT:
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| 300 | OPTIND=2 opt=a OPTARG=
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| 301 | OPTIND=2 opt=b OPTARG=
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| 302 | OPTIND=2 opt=c OPTARG=10
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| 303 | ## END
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| 304 |
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| 305 | #### OPTIND should be >= 1 (regression)
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| 306 | OPTIND=-1
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| 307 | getopts a: foo
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| 308 | echo status=$?
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| 309 |
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| 310 | OPTIND=0
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| 311 | getopts a: foo
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| 312 | echo status=$?
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| 313 | ## STDOUT:
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| 314 | status=1
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| 315 | status=1
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| 316 | ## END
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| 317 | ## OK dash status: 2
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| 318 | ## OK dash stdout-json: ""
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| 319 |
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| 320 |
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| 321 | #### getopts bug #1523
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| 322 |
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| 323 | $SH $REPO_ROOT/spec/testdata/getopts-1523.sh -abcdef -abcde
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| 324 |
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| 325 | ## status: 1
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| 326 | ## STDOUT:
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| 327 | opt:a
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| 328 | opt:b
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| 329 | opt:c arg:def
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| 330 | opt:a
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| 331 | opt:b
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| 332 | opt:c arg:de
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| 333 | ## END
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| 334 |
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| 335 | #### More regression for #1523
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| 336 |
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| 337 | $SH $REPO_ROOT/spec/testdata/getopts-1523.sh -abcdef -xyz
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| 338 |
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| 339 | ## status: 1
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| 340 | ## STDOUT:
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| 341 | opt:a
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| 342 | opt:b
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| 343 | opt:c arg:def
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| 344 | err:?
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| 345 | err:?
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| 346 | err:?
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| 347 | ## END
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