Functions

:function DisplayName(name)
:  echom "Hello!  My name is:"
:  echom a:name
:endfunction

a: represents that the variable is in the argument scope.

:function Varg2(foo, ...)
:  echom a:foo
:  echom a:0
:  echom a:1
:  echo a:000
:endfunction

:call Varg2("a", "b", "c")

• a:0: number of extra arguments
• a:1: first extra argument
• a:000: list of extra arguments