Variable: eshell-history-append
eshell-history-append is a customizable variable defined in
em-hist.el.gz.
Value
nil
Documentation
If non-nil, append new entries to the history file when saving history.
This variable was added, or its default value changed, in Emacs 30.1.
Probably introduced at or before Emacs version 30.1.
Source Code
;; Defined in /usr/src/emacs/lisp/eshell/em-hist.el.gz
(defcustom eshell-history-append nil
"If non-nil, append new entries to the history file when saving history."
:type '(choice (const :tag "Overwrite history file" nil)
(const :tag "Append new entries to file" t))
:version "30.1")