From 113cc1a0a1cb93d54cdd39082026f56c3e4f8384 Mon Sep 17 00:00:00 2001
From: "Timothy J. Warren" <tim@timshomepage.net>
Date: Fri, 5 Mar 2021 20:47:59 -0500
Subject: [PATCH] Minor tweaks

---
 src/ANSI.php     | 4 +++-
 src/Editor.php   | 4 ++--
 src/Terminal.php | 3 +++
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/ANSI.php b/src/ANSI.php
index 03b80aa..0badbc0 100644
--- a/src/ANSI.php
+++ b/src/ANSI.php
@@ -78,7 +78,9 @@ class ANSI {
 	 */
 	public static function moveCursor(int $line, int $column): string
 	{
-		return self::seq('%d;%dH', $line, $column);
+		// The terminal has a 1-based coordinate system,
+		// add one to each to allow 0-based coordinate system input
+		return self::seq('%d;%dH', $line + 1, $column + 1);
 	}
 
 	/**
diff --git a/src/Editor.php b/src/Editor.php
index ebef264..7e2ef92 100644
--- a/src/Editor.php
+++ b/src/Editor.php
@@ -688,8 +688,8 @@ class Editor {
 
 		// Specify the current cursor position
 		$this->outputBuffer .= ANSI::moveCursor(
-			($this->cursorY - $this->rowOffset) + 1,
-			($this->renderX - $this->colOffset) + 1
+			$this->cursorY - $this->rowOffset,
+			$this->renderX - $this->colOffset
 		);
 
 		$this->outputBuffer .= ANSI::SHOW_CURSOR;
diff --git a/src/Terminal.php b/src/Terminal.php
index 940fd27..9ca646b 100644
--- a/src/Terminal.php
+++ b/src/Terminal.php
@@ -33,6 +33,9 @@ class Terminal {
 		return [25, 80];
 	}
 
+	/**
+	 * Clear the screen and reset the cursor position
+	 */
 	public static function clear(): void
 	{
 		self::write(ANSI::CLEAR_SCREEN . ANSI::RESET_CURSOR);