Should (defvar ...) be required to create global variables?

[BrentSeidel]

Currently (setq var ...) will create var as a global variable if it has not already been defined. This is incompatible with Common Lisp which will throw an error in this case.

I am opening this to comment. Does anyone have an opinion on this? Please report in a comment. Pro: More compatible with Common Lisp Con: More work for me to do.