📄 appendop.tests
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# basic casesa=1a+=4echo $ax=(1 2 3)x+=(4 5 6)echo ${x[@]}x[4]+=1echo ${x[@]}# trickier casesa+=5 printenv aecho $a# if the integer flag is set, ksh93 appears to do arithmetic += and evaluate# old value as an arithmetic expressiona=typeset -i aa+=7echo $ab=4+1typeset -i bb+=37echo $bunset xx=(1 2 3 4 5)typeset -i xx[4]+=7echo ${x[@]}unset xtypeset -i xx=([0]=7+11)echo ${x[@]}unset xx=(1 2 3 4 5)typeset -i x#x[4]=7+11x=(1 2 3 4 [4]=7+11 )echo ${x[@]}x=( 1 2 [2]+=7 4 5 )echo ${x[@]}x+=( [3]+=9 [5]=9 )echo ${x[@]}unset aa=1export a+=4printenv aprintenv a+unset xtypeset -i x=4+5echo $xunset xtypeset x+=4echo $xtypeset -i x+=5echo $xreadonly x+=7echo $xx+=5
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