tests/dollar-at-star

   1 #   This program is free software: you can redistribute it and/or modify
   2 #   it under the terms of the GNU General Public License as published by
   3 #   the Free Software Foundation, either version 3 of the License, or
   4 #   (at your option) any later version.
   5 #
   6 #   This program is distributed in the hope that it will be useful,
   7 #   but WITHOUT ANY WARRANTY; without even the implied warranty of
   8 #   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   9 #   GNU General Public License for more details.
  10 #
  11 #   You should have received a copy of the GNU General Public License
  12 #   along with this program.  If not, see <http://www.gnu.org/licenses/>.
  13 #
  14
  15 # first, let's start with the basics
  16
  17 recho "$@"
  18 recho "$*"
  19
  20 recho $@
  21 recho $*
  22
  23 foo=$*
  24 foo=$@
  25
  26 foo="$*"
  27 foo="$@"
  28
  29 unset -v bar
  30
  31 foo=${bar:-$*}
  32 foo=${bar:-$@}
  33
  34 foo=${bar:-"$*"}
  35 foo=${bar:-"$@"}
  36
  37 foo=${!*}
  38 foo=${!@}
  39
  40 set a b
  41
  42 recho "$*"
  43
  44 # If IFS is null, the parameters are joined without separators
  45 IFS=''
  46 recho "$*"
  47
  48 # If IFS is unset, the parameters are separated by spaces
  49 unset IFS
  50 recho "${*}"
  51
  52 recho "$@"
  53 recho $@
  54
  55 IFS='/'
  56 set bob 'tom dick harry' joe
  57 set $*
  58 recho $#
  59 recho $1
  60 recho $2
  61 recho $3
  62
  63 set bob 'tom dick harry' joe
  64 set ${*}
  65 recho $#
  66 recho $1
  67 recho $2
  68 recho $3
  69
  70 set bob 'tom dick harry' joe
  71 set $@
  72 recho $#
  73 recho $1
  74 recho $2
  75 recho $3
  76
  77 set bob 'tom dick harry' joe
  78 set ${@}
  79 recho $#
  80 recho $1
  81 recho $2
  82 recho $3
  83
  84 # according to POSIX.2, unquoted $* should expand to multiple words if
  85 # $IFS is null, just like unquoted $@
  86 IFS=''
  87 set bob 'tom dick harry' joe
  88 set $*
  89 recho $#
  90 recho $1
  91 recho $2
  92 recho $3
  93
  94 set bob 'tom dick harry' joe
  95 set $@
  96 recho $#
  97 recho $1
  98 recho $2
  99 recho $3
 100
 101 # if IFS is unset, the individual positional parameters are split on
 102 # " \t\n" if $* or $@ are unquoted
 103 unset IFS
 104 set bob 'tom dick harry' joe
 105 set $*
 106 recho $#
 107 recho $1
 108 recho $2
 109 recho $3
 110
 111 set bob 'tom dick harry' joe
 112 set $@
 113 recho $#
 114 recho $1
 115 recho $2
 116 recho $3
 117
 118 # but not for "$@" or "$*"
 119 set bob 'tom dick harry' joe
 120 set "$*"
 121 recho $#
 122 recho $1
 123 recho $2
 124 recho $3
 125
 126 set bob 'tom dick harry' joe
 127 set "$@"
 128 recho $#
 129 recho $1
 130 recho $2
 131 recho $3
 132
 133 # POSIX.2 says these should both expand the positional parameters
 134 # to multiple words
 135 set a b c d e
 136 IFS=""
 137 recho $@
 138 recho "$@"
 139
 140 # this example is straight from the POSIX.2 rationale
 141 set foo bar bam
 142
 143 recho "$@"
 144 recho "$*"
 145
 146 unset IFS
 147
 148 recho "$@"
 149 recho $@
 150 recho "$*"
 151
 152 IFS=:
 153
 154 # special variables
 155 set -- 1 2 3 4 5 6 7 8 9 10
 156
 157 bar=${*}
 158 foo=$*
 159 echo foo = "$foo"
 160 echo bar = "$bar"
 161
 162 foo1=$@
 163 bar1=${@}
 164
 165 echo foo1 = "$foo1"
 166 echo bar1 = "$bar1"
 167
 168 foo2="$*"
 169 bar2="${*}"
 170
 171 echo foo2 = "$foo2"
 172 echo bar2 = "$bar2"
 173
 174 eval foo3='$*' bar3='${*}'
 175 echo foo3 = "$foo3"
 176 echo bar3 = "$bar3"
 177
 178 case $* in
 179 *\:*)   echo ok 1;;
 180 *)      echo bad 1;;
 181 esac
 182
 183 case $@ in
 184 *\:*)   echo bad 2;;
 185 *)      echo ok 2;;
 186 esac
 187
 188 case "$*" in
 189 *\:*)   echo ok 3;;
 190 *)      echo bad 3;;
 191 esac
 192
 193 case "$@" in
 194 *\:*)   echo bad 4;;
 195 *)      echo ok 4;;
 196 esac
 197
 198 IFS=$' \t\n'
 199
 200 bar=${*}
 201 foo=$*
 202 echo foo = "$foo"
 203 echo bar = "$bar"
 204
 205 foo1=$@
 206 bar1=${@}
 207
 208 echo foo1 = "$foo1"
 209 echo bar1 = "$bar1"
 210
 211 foo2="$*"
 212 bar2="${*}"
 213
 214 echo foo2 = "$foo2"
 215 echo bar2 = "$bar2"
 216
 217 eval foo3='$*' bar3='${*}'
 218 echo foo3 = "$foo3"
 219 echo bar3 = "$bar3"
 220
 221 case $* in
 222 *\ *)   echo ok 1;;
 223 *)      echo bad 1;;
 224 esac
 225
 226 case $@ in
 227 *\ *)   echo ok 2;;
 228 *)      echo bad 2;;
 229 esac
 230
 231 case "$*" in
 232 *\ *)   echo ok 3;;
 233 *)      echo bad 3;;
 234 esac
 235
 236 case "$@" in
 237 *\ *)   echo ok 4;;
 238 *)      echo bad 4;;
 239 esac
 240
 241 # tests for the effect of quoting $* and $@ in an assignment context (plus
 242 # arrays) -- bugs through bash 4.2
 243 ${THIS_SH} ./dollar-at-star1.sub
 244
 245 # more tests for expanding $@ and $* in a context where there is no word
 246 # splitting
 247 ${THIS_SH} ./dollar-at-star2.sub
 248 ${THIS_SH} ./dollar-at-star3.sub
 249 ${THIS_SH} ./dollar-at-star4.sub
 250 ${THIS_SH} ./dollar-at-star5.sub
 251 ${THIS_SH} ./dollar-at-star6.sub
 252 ${THIS_SH} ./dollar-at-star7.sub
 253
 254 # tests for expansions of $@ and ${a[@]} (vs. $* and ${a[*]}) on the RHS of
 255 # assignment statements with non-default IFS: $@ expands to args or array
 256 # members separated by spaces
 257 ${THIS_SH} ./dollar-at-star8.sub
 258
 259 # more tests of the expansions of $@ and $* (and their array equivalents)
 260 # with different values for IFS
 261 ${THIS_SH} ./dollar-at-star9.sub
 262
 263 # tests for expansions of "$*" and "$@" and their array equivalents when $1 == ''
 264 # and we're using the POSIX word expansions
 265 ${THIS_SH} ./dollar-at-star10.sub
 266 ${THIS_SH} ./dollar-at-star11.sub
 267
 268 # tests for special expansion of "$*" and "${array[*]}" when used with other
 269 # expansions -- bugs through bash-2.05b
 270 ${THIS_SH} ./dollar-star1.sub
 271
 272 # tests for expansion of "$@" on rhs of things like ${param:+word}.  Bugs
 273 # though bash-2.05b
 274 ${THIS_SH} ./dollar-at1.sub
 275
 276 # tests for expansion of other variables in double-quoted strings containing
 277 # $@.  Bugs through bash-2.05b
 278 ${THIS_SH} ./dollar-at2.sub
 279
 280 # tests for various expansions of $* in different contexts -- word split,
 281 # no splitting, etc. when $IFS is NUL
 282 ${THIS_SH} ./dollar-star2.sub
 283
 284 # tests for expansions of "${array[*]}" and "${array[@]}" when $IFS is not the
 285 # default and the array contains null elements
 286 ${THIS_SH} ./dollar-star3.sub
 287
 288 # test for set -u and expansions of $@ when there are no positional parameters
 289 ${THIS_SH} ./dollar-at3.sub
 290 # test for set -u and expansions of $* when there are no positional parameters
 291 ${THIS_SH} ./dollar-star4.sub
 292
 293 # tests for expansions of $* when IFS is null
 294 ${THIS_SH} ./dollar-star5.sub
 295
 296 # tests for inappropriate word splitting through bash-4.2
 297 ${THIS_SH} ./dollar-at4.sub
 298
 299 # tests for problems with "$@" preceded and followed by other quoted expansions
 300 # through bash-4.2
 301 ${THIS_SH} ./dollar-at5.sub
 302
 303 # tests for problems with "${@:1}" and other expansions with null entries
 304 # in positional parameters
 305 ${THIS_SH} ./dollar-at6.sub
 306
 307 # tests for expansions of $* when $1 == ""; problem through bash-4.2
 308 ${THIS_SH} ./dollar-star6.sub
 309
 310 # tests for expansions of $* (unquoted) when IFS changes (e.g., ${IFS:=-})
 311 # problem through bash-4.2
 312 ${THIS_SH} ./dollar-star7.sub
 313
 314 # tests for expansions of $* (unquoted) when IFS is null and word splitting is
 315 # not going to be performed.
 316 # problem through bash-4.4 in some parameter expansion contexts
 317 ${THIS_SH} ./dollar-star8.sub
 318
 319 # tests for expansions of "$@" when there are no positional parameter or when
 320 # $1 == '' and the expansion is preceded by something that results in a quoted
 321 # null string
 322 ${THIS_SH} ./dollar-at7.sub
 323
 324 # tests for expansions of $* when in an assignment context (no splitting) and
 325 # IFS is null
 326 ${THIS_SH} ./dollar-star9.sub
 327
 328 # more tests for expansions of $* when not splitting with IFS set or unset and
 329 # null strings as the positional parameters
 330 ${THIS_SH} ./dollar-star10.sub
 331
 332 exit 0