Pass args to a custom vim command
Custom commands are easy in vim:
:command HelloWorld echo "hello world" :HelloWorld " outputs hello world
But what if I want to pass an arg to the command?
First you have to specify that you want args with the
-narg flag. Then you need to have declare where the args would go with
:command! -narg=1 Say :echo "hello" <q-args> :Say world " outputs hello world