From 340dc459f5f0c809de88527be2d522f82e9170e1 Mon Sep 17 00:00:00 2001
From: "Timothy J. Warren" <tim@timshomepage.net>
Date: Wed, 16 Oct 2019 22:14:30 -0400
Subject: [PATCH] Don't refresh until there's a keypress

---
 kilo           | 13 ++++++++++---
 src/Editor.php | 10 ++++++++--
 2 files changed, 18 insertions(+), 5 deletions(-)

diff --git a/kilo b/kilo
index d8b5f64..1fa1c2b 100755
--- a/kilo
+++ b/kilo
@@ -13,7 +13,6 @@ function main(int $argc, array $argv): int
 
 	enableRawMode();
 
-	// ob_start();
 	$editor = Editor::new($ffi);
 
 	if ($argc >= 2)
@@ -27,8 +26,16 @@ function main(int $argc, array $argv): int
 	while (true)
 	{
 		$editor->refreshScreen();
-		$editor->processKeypress();
-		// ob_flush();
+		$char = $editor->processKeypress();
+		while ($char === '')
+		{
+			$char = $editor->processKeypress();
+		}
+		
+		if ($char === NULL)
+		{
+			break;
+		}
 	}
 
 	return 0;
diff --git a/src/Editor.php b/src/Editor.php
index 3e768ee..38c538c 100644
--- a/src/Editor.php
+++ b/src/Editor.php
@@ -534,9 +534,15 @@ class Editor {
 		}
 	}
 
-	public function processKeypress(): string
+	public function processKeypress(): ?string
 	{
 		$c = $this->readKey();
+
+		if ($c === "\0")
+		{
+			return '';
+		}
+
 		switch ($c)
 		{
 			case Key::HOME_KEY:
@@ -565,7 +571,7 @@ class Editor {
 			case chr(ctrl_key('q')):
 				write_stdout("\x1b[2J"); // Clear the screen
 				write_stdout("\x1b[H"); // Reposition cursor to top-left
-				exit(0);
+				return NULL;
 			break;
 		}