Append to variable

Synopsis

• append varName ? value value value ... ?

Description

Append all of the value arguments to the current value of variable varName. If varName doesn´t exist, it is given a value equal to the concatenation of all the value arguments. This command provides an efficient way to build up long variables incrementally. For example, "append a $b" is much more efficient than "set a $a$b" if $a is long.

Keywords

append, variable