Variable: nnheader-max-head-length
nnheader-max-head-length is a customizable variable defined in
nnheader.el.gz.
Value
8192
Documentation
Max length of the head of articles.
Value is an integer, nil, or t. nil means read in chunks of a file
indefinitely until a complete head is found; t means always read the
entire file immediately, disregarding nnheader-head-chop-length.
Integer values will in effect be rounded up to the nearest multiple of
nnheader-head-chop-length.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/nnheader.el.gz
(defcustom nnheader-max-head-length 8192
"Max length of the head of articles.
Value is an integer, nil, or t. nil means read in chunks of a file
indefinitely until a complete head is found; t means always read the
entire file immediately, disregarding `nnheader-head-chop-length'.
Integer values will in effect be rounded up to the nearest multiple of
`nnheader-head-chop-length'."
:group 'gnus-article-various ; FIXME?
:type '(choice integer (const :tag "Read chunks" nil)
(const :tag "Read entire file" t)))