From bf83fb7b10091d7c76c489330b46cd0f96682478 Mon Sep 17 00:00:00 2001
From: Max Brunsfeld <maxbrunsfeld@gmail.com>
Date: Fri, 21 Nov 2014 11:06:22 -0800
Subject: [PATCH] :arrow_up: text-buffer@3.7.0 for checkpoints

Also add methods on TextEditor to expose the new checkpoint
functionality
---
 package.json           |  2 +-
 src/text-editor.coffee | 26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

diff --git a/package.json b/package.json
index 4db00fd30..fdd3e62cf 100644
--- a/package.json
+++ b/package.json
@@ -60,7 +60,7 @@
     "serializable": "^1",
     "space-pen": "3.8.2",
     "temp": "0.7.0",
-    "text-buffer": "^3.6.1",
+    "text-buffer": "^3.7.0",
     "theorist": "^1.0.2",
     "underscore-plus": "^1.6.1",
     "vm-compatibility-layer": "0.1.0"
diff --git a/src/text-editor.coffee b/src/text-editor.coffee
index 6701108d0..012666d5d 100644
--- a/src/text-editor.coffee
+++ b/src/text-editor.coffee
@@ -1126,6 +1126,32 @@ class TextEditor extends Model
   # within the transaction.
   abortTransaction: -> @buffer.abortTransaction()
 
+  # Experimental: Create a pointer to the current state of the buffer for use
+  # with {::revertToCheckpoint} and {::groupChangesSinceCheckpoint}.
+  #
+  # Returns a checkpoint value.
+  createCheckpoint: -> @buffer.createCheckpoint()
+
+  # Experimental: Revert the buffer to the state it was in when the given
+  # checkpoint was created.
+  #
+  # The redo stack will be empty following this operation, so changes since the
+  # checkpoint will be lost. If the given checkpoint is no longer present in the
+  # undo history, no changes will be made to the buffer and this method will
+  # return `false`.
+  #
+  # Returns a {Boolean} indicating whether the operation succeeded.
+  revertToCheckpoint: (checkpoint) -> @buffer.revertToCheckpoint(checkpoint)
+
+  # Experimental: Group all changes since the given checkpoint into a single
+  # transaction for purposes of undo/redo.
+  #
+  # If the given checkpoint is no longer present in the undo history, no
+  # grouping will be performed and this method will return `false`.
+  #
+  # Returns a {Boolean} indicating whether the operation succeeded.
+  groupChangesSinceCheckpoint: (checkpoint) -> @buffer.groupChangesSinceCheckpoint(checkpoint)
+
   ###
   Section: TextEditor Coordinates
   ###