&

command: & [=] synonym: @set = :[]

sets the attribute named on to . if is not a predefined attribute (like ofail or va), then it is created. attributes so created are called user-named attributes. attribute names may only contain letters, numbers, and the characters < -_.@#$^&*~?=+| >, and must start with a letter. the names of user-named attributes may not be abbreviated (an attempt to get the value of the attribute will fail, and an attempt to set will create a new attribute). the & command may be used to set predefined attributes (in this instance, '& =' is equivalent to '@ =').

related topics: @set.