From c5d7ae7920605ef5753f1838e83c015df339929a Mon Sep 17 00:00:00 2001
From: Paulb23 <p_batty@hotmail.co.uk>
Date: Sat, 28 Aug 2021 12:23:51 +0100
Subject: [PATCH] Allow nested complex ops in TextEdit

---
 scene/gui/text_edit.cpp | 13 ++++++++++++-
 scene/gui/text_edit.h   |  1 +
 2 files changed, 13 insertions(+), 1 deletion(-)

diff --git a/scene/gui/text_edit.cpp b/scene/gui/text_edit.cpp
index a731f80741f..560ea5af3ce 100644
--- a/scene/gui/text_edit.cpp
+++ b/scene/gui/text_edit.cpp
@@ -2644,6 +2644,8 @@ void TextEdit::insert_line_at(int p_at, const String &p_text) {
 }
 
 void TextEdit::insert_text_at_caret(const String &p_text) {
+	begin_complex_operation();
+
 	delete_selection();
 
 	int new_column, new_line;
@@ -2653,6 +2655,8 @@ void TextEdit::insert_text_at_caret(const String &p_text) {
 	set_caret_line(new_line, false);
 	set_caret_column(new_column);
 	update();
+
+	end_complex_operation();
 }
 
 void TextEdit::remove_text(int p_from_line, int p_from_column, int p_to_line, int p_to_column) {
@@ -2937,13 +2941,20 @@ void TextEdit::menu_option(int p_option) {
 /* Versioning */
 void TextEdit::begin_complex_operation() {
 	_push_current_op();
-	next_operation_is_complex = true;
+	if (complex_operation_count == 0) {
+		next_operation_is_complex = true;
+	}
+	complex_operation_count++;
 }
 
 void TextEdit::end_complex_operation() {
 	_push_current_op();
 	ERR_FAIL_COND(undo_stack.size() == 0);
 
+	complex_operation_count = MAX(complex_operation_count - 1, 0);
+	if (complex_operation_count > 0) {
+		return;
+	}
 	if (undo_stack.back()->get().chain_forward) {
 		undo_stack.back()->get().chain_forward = false;
 		return;
diff --git a/scene/gui/text_edit.h b/scene/gui/text_edit.h
index ced03e19d06..a9d5f8ec3bb 100644
--- a/scene/gui/text_edit.h
+++ b/scene/gui/text_edit.h
@@ -289,6 +289,7 @@ private:
 	bool undo_enabled = true;
 	int undo_stack_max_size = 50;
 
+	int complex_operation_count = 0;
 	bool next_operation_is_complex = false;
 
 	TextOperation current_op;