query: Empty variable print '' when quoted
positive_passages.docid: 23333
positive_passages.text: How can I expand a quoted variable to nothing if it's empty?
negative_passages.docid: 149251
negative_passages.text: Quoting / escaping / expansion issue in "command in a variable"
negative_passages.docid: 4060
negative_passages.text: How to escape quotes in shell?
negative_passages.docid: 66980
negative_passages.text: Using simple quotes "" instead of \text{}
negative_passages.docid: 17356
negative_passages.text: Quotation marks inside a string
negative_passages.docid: 104468
negative_passages.text: Clear complains that a subscripted variable is not a symbol or a string?
negative_passages.docid: 4332
negative_passages.text: Why does parameter expansion with spaces without quotes work inside double brackets "[[" but not inside single brackets "["?
negative_passages.docid: 245
negative_passages.text: Why are my quotation marks causing an “unexpected token” error with this command?
negative_passages.docid: 89588
negative_passages.text: Why do I need to quote variable for if, but not for echo?
negative_passages.docid: 22659
negative_passages.text: Print a string including single quotes and other special characters
negative_passages.docid: 131930
negative_passages.text: How does storing the regular expression in a shell variable avoid problems with quoting characters that are special to the shell?
negative_passages.docid: 99771
negative_passages.text: Quotes inside a variable are ignored
negative_passages.docid: 128255
negative_passages.text: Empty Strings: Why or when is '' equal to ' '?
negative_passages.docid: 86489
negative_passages.text: What is the difference between object keys with quotes and without quotes?
negative_passages.docid: 64769
negative_passages.text: What is the difference between \empty and \@empty?
negative_passages.docid: 72212
negative_passages.text: Bash script prints "Command Not Found" on empty lines
negative_passages.docid: 125502
negative_passages.text: Empty set literal?