Variable: nnmail-split-header-length-limit
nnmail-split-header-length-limit is a customizable variable defined in
nnmail.el.gz.
Value
2048
Documentation
Header lines longer than this limit are excluded from the split function.
This variable was added, or its default value changed, in Emacs 21.1.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/nnmail.el.gz
(defcustom nnmail-split-header-length-limit 2048
"Header lines longer than this limit are excluded from the split function."
:version "21.1"
:group 'nnmail
:type 'integer)