From b1d0848701e358d1a9f2b99314a0bcd4478a9b63 Mon Sep 17 00:00:00 2001
From: Richard Hansen <rhansen@rhansen.org>
Date: Mon, 13 Dec 2021 01:29:00 -0500
Subject: [PATCH] Pad: Improve readability of `appendText`

---
 src/node/db/Pad.js | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/node/db/Pad.js b/src/node/db/Pad.js
index 45f8ad6af..b7bbdb867 100644
--- a/src/node/db/Pad.js
+++ b/src/node/db/Pad.js
@@ -264,16 +264,16 @@ Pad.prototype.setText = async function (newText) {
   await this.appendRevision(changeset);
 };
 
+/**
+ * Appends text to the pad.
+ *
+ * @param {string} newText - Text to insert just BEFORE the pad's existing terminating newline.
+ */
 Pad.prototype.appendText = async function (newText) {
-  // clean the new text
   newText = exports.cleanText(newText);
-
-  const oldText = this.text();
-
-  // create the changeset
-  const changeset = Changeset.makeSplice(oldText, oldText.length, 0, newText);
-
-  // append the changeset
+  const orig = this.text();
+  assert(orig.endsWith('\n'));
+  const changeset = Changeset.makeSplice(orig, orig.length - 1, 0, newText);
   await this.appendRevision(changeset);
 };