mh-iterate-on-messages-in-region

mh-iterate-on-messages-in-region is an autoloaded Lisp macro in `mh-acros.el'.

(mh-iterate-on-messages-in-region VAR BEGIN END &rest BODY)

Iterate over region.

VAR is bound to the message on the current line as we loop
starting from BEGIN till END. In each step BODY is executed.

If VAR is nil then the loop is executed without any binding.