12.5.7         concat

Description:   Join lists together.

Syntax:         concat ?arg arg ...?


Argument:      lists, elements, data,

Returns:        string containing list of arguments separated by spaces

See Also:       lappend, list, append


Examples:      concat a b {c d e} {f {g h}}

The Concat command concatenates the arguments into a single list. It also eliminates leading and trailing spaces in the arg’s and adds a single separator space between arg’s. If no args are supplied, the result is an empty string.