Add prescient

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+;;; oni-prescient.el --- Configuration for prescient  -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2020  Tom Willemse
+
+;; Author: Tom Willemse <tom@ryuslash.org>
+;; Keywords: local
+;; Version: 2020.0224.224020
+;; Package-Requires: (prescient oni-data-dir)
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; Configuration for the ‘prescient’ package. It enables
+;; ‘prescient-persist-mode’ and adds an idle timer that calls ‘prescient--save’
+;; so that even when Emacs server crashes, the data is still persisted.
+
+;;; Code:
+
+(require 'oni-data-dir)
+(require 'prescient)
+
+(setq prescient-save-file (oni-data-dir-locate "prescient-save.el"))
+
+(run-with-idle-timer 10 t 'prescient--save)
+
+(prescient-persist-mode)
+
+;;;###autoload(with-eval-after-load 'prescient (require 'oni-prescient))
+
+(provide 'oni-prescient)
+;;; oni-prescient.el ends here