103 lines
1.2 KiB
Text
103 lines
1.2 KiB
Text
# fixes for bugs in bash-4.2 regarding empty strings in expand_string_for_rhs
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f=abc
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recho ${f##""a}
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recho ${f##"$v"a}
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recho ${f%%""c}
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recho ${f%%"$v"c}
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recho ${f//""a}
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recho ${f//"$v"a}
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recho ${f/""a""b/}
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recho ${f/""c/}
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recho ${f/"$v"c/}
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unset foo empty
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foo=aabbcc
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recho ${foo/bb/}
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recho ${foo/bb/$empty}
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recho ${foo/}
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recho ${empty/}
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recho ${foo/ }
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recho ${empty/ }
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unset foo empty
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S2=oenophile
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recho ${S2^"$v"[aeiou]}
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recho ${S2^^"$v"[aeiou]}
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recho ${foo:-""}
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recho ${foo:-""abc}
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recho "${foo:-''}"
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recho "${foo:-}"
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if [[ $var == "" ]]; then
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echo good 1
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fi
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if [[ "$var"X == ""X ]]; then
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echo good 2
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fi
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if [ "$var"X == ""X"" ]; then
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echo good 3
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fi
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if [ X"" == X ]; then
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echo good 4
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fi
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if [[ X"" == X ]]; then
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echo good 5
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fi
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case x"" in
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x) echo 'ok 1'
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;;
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x??) echo 'this would be really odd'
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;;
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x?) echo 'does this prove anything?'
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echo x""x
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;;
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*) echo 'no match'
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;;
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esac
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if [[ x"" == x ]]; then
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echo ok 2
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fi
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if [[ x"" == x"" ]]; then
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echo ok 3
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else
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echo bad 3
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fi
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case x"" in
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x"") echo ok 4 ;;
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*) echo bad 4;;
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esac
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if [[ x"" == x"" ]]; then
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echo ok 5
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else
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echo bad 5
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fi
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case x"" in
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"x") echo ok 6 ;;
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*) echo bad 6;;
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esac
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case x"" in
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"x") echo CTLNUL 7 ;;
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x) echo ok 7 ;;
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*) echo bad 7 ;;
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esac
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