From 6fc9337cd8ea192d9bc6c44201910342fd67d9aa Mon Sep 17 00:00:00 2001
From: PROP 65 <132837123+PROP65@users.noreply.github.com>
Date: Sun, 7 May 2023 18:25:41 +0000
Subject: [PATCH] Update raygui.h (#279)

fix for #278
---
 src/raygui.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/raygui.h b/src/raygui.h
index b81e71d..bfa7fd2 100644
--- a/src/raygui.h
+++ b/src/raygui.h
@@ -2229,8 +2229,12 @@ bool GuiTextBox(Rectangle bounds, char *text, int bufferSize, bool editMode)
                     // Move backward text from cursor position
                     for (int i = (textBoxCursorIndex - prevCodepointSize); i < textLength; i++) text[i] = text[i + prevCodepointSize];
 
-                    textBoxCursorIndex -= codepointSize;
-                    textLength -= codepointSize;
+                    // Prevent textBoxCursorIndex from decrementing past 0
+                    if(textBoxCursorIndex > 0)
+                    {
+                        textBoxCursorIndex -= codepointSize;
+                        textLength -= codepointSize;
+                    }
 
                     // Make sure text last character is EOL
                     text[textLength] = '\0';