From e4ffe8eb9866e632ac879066cdc3ad4eeffad22e Mon Sep 17 00:00:00 2001
From: Timothy Warren <tim@timshomepage.net>
Date: Tue, 9 Mar 2021 11:05:23 -0500
Subject: [PATCH] Correct syntax highlighting when adding a new line in the
 middle of the file

---
 src/Editor.php | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/src/Editor.php b/src/Editor.php
index 7e2ef92..9dcb779 100644
--- a/src/Editor.php
+++ b/src/Editor.php
@@ -207,6 +207,12 @@ class Editor {
 				$row,
 				...array_slice($this->rows, $at),
 			];
+
+			// Update indexes of each row so that correct highlighting is done
+			for ($idx = $at; $idx < $this->numRows; $idx++)
+			{
+				$this->rows[$idx]->idx = $idx;
+			}
 		}
 
 		ksort($this->rows);
@@ -236,7 +242,7 @@ class Editor {
 		$this->rows = array_values($this->rows);
 		for ($i = $at; $i < $this->numRows; $i++)
 		{
-			$this->rows[$i]->idx--;
+			$this->rows[$i]->idx = $i;
 		}
 
 		// Re-tokenize the file
@@ -673,8 +679,6 @@ class Editor {
 
 	public function refreshScreen(): void
 	{
-		Terminal::clear();
-
 		$this->scroll();
 
 		$this->outputBuffer = '';