4 files changed, 30 insertions, 10 deletions

diff --git a/editor/plugins/script_text_editor.cpp b/editor/plugins/script_text_editor.cpp
index 02168a4c97..1489ea1e27 100644
--- a/editor/plugins/script_text_editor.cpp
+++ b/editor/plugins/script_text_editor.cpp
@@ -980,6 +980,23 @@ void ScriptTextEditor::_lookup_symbol(const String &p_symbol, int p_row, int p_c
 	}
 }
 
+void ScriptTextEditor::_validate_symbol(const String &p_symbol) {
+
+	TextEdit *text_edit = code_editor->get_text_edit();
+
+	Node *base = get_tree()->get_edited_scene_root();
+	if (base) {
+		base = _find_node_for_script(base, base, script);
+	}
+
+	ScriptLanguage::LookupResult result;
+	if (ScriptServer::is_global_class(p_symbol) || p_symbol.is_resource_file() || script->get_language()->lookup_code(code_editor->get_text_edit()->get_text_for_lookup_completion(), p_symbol, script->get_path(), base, result) == OK) {
+		text_edit->set_highlighted_word(p_symbol);
+	} else {
+		text_edit->set_highlighted_word(String());
+	}
+}
+
 void ScriptTextEditor::update_toggle_scripts_button() {
 	if (code_editor != NULL) {
 		code_editor->update_toggle_scripts_button();
@@ -1769,6 +1786,7 @@ ScriptTextEditor::ScriptTextEditor() {
 	code_editor->set_code_complete_func(_code_complete_scripts, this);
 	code_editor->get_text_edit()->connect("breakpoint_toggled", callable_mp(this, &ScriptTextEditor::_breakpoint_toggled));
 	code_editor->get_text_edit()->connect("symbol_lookup", callable_mp(this, &ScriptTextEditor::_lookup_symbol));
+	code_editor->get_text_edit()->connect("symbol_validate", callable_mp(this, &ScriptTextEditor::_validate_symbol));
 	code_editor->get_text_edit()->connect("info_clicked", callable_mp(this, &ScriptTextEditor::_lookup_connections));
 	code_editor->set_v_size_flags(SIZE_EXPAND_FILL);
 	code_editor->show_toggle_scripts_button();
diff --git a/editor/plugins/script_text_editor.h b/editor/plugins/script_text_editor.h
index e23160d029..d2f0b310e6 100644
--- a/editor/plugins/script_text_editor.h
+++ b/editor/plugins/script_text_editor.h
@@ -178,6 +178,7 @@ protected:
 
 	void _goto_line(int p_line) { goto_line(p_line); }
 	void _lookup_symbol(const String &p_symbol, int p_row, int p_column);
+	void _validate_symbol(const String &p_symbol);
 
 	void _lookup_connections(int p_row, String p_method);
 
diff --git a/scene/gui/text_edit.cpp b/scene/gui/text_edit.cpp
index 784a6afc7b..06691d09be 100644
--- a/scene/gui/text_edit.cpp
+++ b/scene/gui/text_edit.cpp
@@ -2529,13 +2529,11 @@ void TextEdit::_gui_input(const Ref<InputEvent> &p_gui_input) {
 
 				String new_word = get_word_at_pos(mm->get_position());
 				if (new_word != highlighted_word) {
-					highlighted_word = new_word;
-					update();
+					emit_signal("symbol_validate", new_word);
 				}
 			} else {
 				if (highlighted_word != String()) {
-					highlighted_word = String();
-					update();
+					set_highlighted_word(String());
 				}
 			}
 		}
@@ -2584,13 +2582,9 @@ void TextEdit::_gui_input(const Ref<InputEvent> &p_gui_input) {
 			if (select_identifiers_enabled) {
 
 				if (k->is_pressed() && !dragging_minimap && !dragging_selection) {
-
-					highlighted_word = get_word_at_pos(get_local_mouse_position());
-					update();
-
+					emit_signal("symbol_validate", get_word_at_pos(get_local_mouse_position()));
 				} else {
-					highlighted_word = String();
-					update();
+					set_highlighted_word(String());
 				}
 			}
 		}
@@ -7008,6 +7002,11 @@ void TextEdit::menu_option(int p_option) {
 	}
 }
 
+void TextEdit::set_highlighted_word(const String &new_word) {
+	highlighted_word = new_word;
+	update();
+}
+
 void TextEdit::set_select_identifiers_on_hover(bool p_enable) {
 
 	select_identifiers_enabled = p_enable;
@@ -7225,6 +7224,7 @@ void TextEdit::_bind_methods() {
 	ADD_SIGNAL(MethodInfo("breakpoint_toggled", PropertyInfo(Variant::INT, "row")));
 	ADD_SIGNAL(MethodInfo("symbol_lookup", PropertyInfo(Variant::STRING, "symbol"), PropertyInfo(Variant::INT, "row"), PropertyInfo(Variant::INT, "column")));
 	ADD_SIGNAL(MethodInfo("info_clicked", PropertyInfo(Variant::INT, "row"), PropertyInfo(Variant::STRING, "info")));
+	ADD_SIGNAL(MethodInfo("symbol_validate", PropertyInfo(Variant::STRING, "symbol")));
 
 	BIND_ENUM_CONSTANT(MENU_CUT);
 	BIND_ENUM_CONSTANT(MENU_COPY);
diff --git a/scene/gui/text_edit.h b/scene/gui/text_edit.h
index 6e267f5a47..3c9d1a5c85 100644
--- a/scene/gui/text_edit.h
+++ b/scene/gui/text_edit.h
@@ -585,6 +585,7 @@ public:
 
 	bool is_insert_text_operation();
 
+	void set_highlighted_word(const String &new_word);
 	void set_text(String p_text);
 	void insert_text_at_cursor(const String &p_text);
 	void insert_at(const String &p_text, int at);