mh-mail-header-end
mh-mail-header-end is an autoloaded Lisp function in `mh-utils.el
'.
(mh-mail-header-end)
Substitute for `mail-header-end' that doesn't widen the buffer.
In MH-E we frequently need to find the end of headers in nested
messages, where the buffer has been narrowed. This function works
in this situation.