Lines Matching refs:variable
5 # Note the fine distinction between a variable and an expression.
6 # A variable has a name and a value. To access the value, one writes an
9 # variable modifiers such as in ${VAR:Mpattern}.
11 # XXX: Strictly speaking, variable modifiers should be called expression
12 # modifiers instead since they only modify the expression, not the variable.
14 # of the variable.
18 # A defined variable may appear on either side of the comparison.
26 # A variable that appears on the left-hand side must be defined.
32 # A variable that appears on the right-hand side must be defined.
38 # A defined variable may appear as an expression of its own.
42 # An undefined variable on its own generates a parse error.