[nongnu] elpa/goto-chg 5c057c8 22/27: Turn undo-tree into a soft dependency

[Philip Kaludercic]

branch: elpa/goto-chg
commit 5c057c8623abadf7fd57ce625843435d231f2739
Author: Vasilij Schneidermann <mail@vasilij.de>
Commit: Vasilij Schneidermann <mail@vasilij.de>

    Turn undo-tree into a soft dependency
---
 goto-chg.el | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/goto-chg.el b/goto-chg.el
index c912c71..31cf016 100644
--- a/goto-chg.el
+++ b/goto-chg.el
@@ -24,7 +24,6 @@
 ;; Maintainer: Vasilij Schneidermann <mail@vasilij.de>
 ;; Created: 16 May 2002
 ;; Version: 1.7.3
-;; Package-Requires: ((undo-tree "0.1.3"))
 ;; Keywords: convenience, matching
 ;; URL: https://github.com/emacs-evil/goto-chg
 ;;
@@ -98,8 +97,6 @@
 
 ;;; Code:
 
-(require 'undo-tree)
-
 (defvar glc-default-span 8 "*goto-last-change don't visit the same point 
twice. glc-default-span tells how far around a visited point not to visit 
again.")
 (defvar glc-current-span 8 "Internal for goto-last-change.\nA copy of 
glc-default-span or the ARG passed to goto-last-change.")
 (defvar glc-probe-depth 0 "Internal for goto-last-change.\nIt is non-zero 
between successive goto-last-change.")
@@ -232,6 +229,13 @@ Return nil if E represents no real change.
 that is, it was previously saved or unchanged. Nil otherwise."
   (and (listp e) (eq (car e) t)))
 
+(declare-function undo-tree-current "undo-tree")
+(declare-function undo-tree-node-p "undo-tree")
+(declare-function undo-tree-node-previous "undo-tree")
+(declare-function undo-tree-node-undo "undo-tree")
+(declare-function undo-list-transfer-to-tree "undo-tree")
+(defvar buffer-undo-tree)
+
 ;;;###autoload
 (defun goto-last-change (arg)
 "Go to the point where the last edit was made in the current buffer.