tests/appendop.tests

   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 # basic cases
  15 a=1
  16 a+=4
  17 echo $a
  18
  19 x=(1 2 3)
  20 x+=(4 5 6)
  21
  22 echo ${x[@]}
  23
  24 x[4]+=1
  25 echo ${x[@]}
  26
  27 # trickier cases
  28 # post-bash-4.2: bash understands += in environment assignments preceding
  29 # command names
  30 a+=5 printenv a
  31 echo $a
  32
  33 # if the integer flag is set, ksh93 appears to do arithmetic += and evaluate
  34 # old value as an arithmetic expression
  35 a=
  36 typeset -i a
  37 a+=7
  38 echo $a
  39
  40 b=4+1
  41 typeset -i b
  42 b+=37
  43
  44 echo $b
  45
  46 unset x
  47 x=(1 2 3 4 5)
  48
  49 typeset -i x
  50
  51 x[4]+=7
  52
  53 echo ${x[@]}
  54
  55 unset x
  56 typeset -i x
  57
  58 x=([0]=7+11)
  59 echo ${x[@]}
  60
  61 unset x
  62 x=(1 2 3 4 5)
  63
  64 typeset -i x
  65
  66 #x[4]=7+11
  67
  68 x=(1 2 3 4 [4]=7+11 )
  69 echo ${x[@]}
  70
  71 x=( 1 2 [2]+=7 4 5 )
  72 echo ${x[@]}
  73
  74 x+=( [3]+=9 [5]=9 )
  75 echo ${x[@]}
  76
  77 unset a
  78 a=1
  79 export a+=4
  80 printenv a
  81 printenv a+
  82
  83 unset x
  84 typeset -i x=4+5
  85 echo $x
  86
  87 unset x
  88 typeset x+=4
  89 echo $x
  90
  91 typeset -i x+=5
  92 echo $x
  93
  94 readonly x+=7
  95 echo $x
  96
  97 x+=5
  98
  99 ${THIS_SH} ./appendop1.sub
 100 ${THIS_SH} ./appendop2.sub