76 lines
1.2 KiB
Text
76 lines
1.2 KiB
Text
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# @(#)precedence_test 1.0 91/07/24 Maarten Litmaath
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# test of relative precedences for `&&' and `||' operators
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echo "\`Say' echos its argument. Its return value is of no interest."
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case `echo -n` in
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'') Say () { echo -n "$*" ; } ;;
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*) Say () { echo "$*\c" ; } ;;
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esac
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echo "\`Truth' echos its argument and returns a TRUE result."
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Truth () {
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Say $1;
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return 0;
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}
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echo "\`False' echos its argument and returns a FALSE result."
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False () {
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Say $1;
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return 1;
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}
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echo ""
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cmd1='$open $test1 && $test2 $close || $test3'
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cmd2='$test1 || $open $test2 && $test3 $close'
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grouping_sh=
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grouping_C='( )'
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test3='Say 3'
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for i in 1 2
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do
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eval proto=\$cmd$i
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for test1 in 'Truth 1' 'False 1'
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do
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for test2 in 'Truth 2' 'False 2'
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do
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for precedence in sh C
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do
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eval set x \$grouping_$precedence
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shift
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open=${1-' '}
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close=${2-' '}
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eval cmd=\""$proto"\"
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Say "$cmd output="
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output=`eval "$cmd"`
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Say "$output"
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read correct || { echo 'Input fubar. Abort.' >&2; exit 1; }
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test "X$output" = "X$correct" || echo " correct=$correct"
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echo ''
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done
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echo ''
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done
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done
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done << EOF
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EOF
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