Display toasts when using push_error() or push_warning() in a script

This only applies to scripts running within the editor itself, such as
editor plugins and `@tool` scripts.

Text-based logging will also display those errors as userspace errors,
as opposed to internal engine errors.

Author: Calinou

core/variant/variant_utility.cpp

@@ -902,7 +902,8 @@ struct VariantUtilityFunctions {
 			}
 		}
 
-		ERR_PRINT(s);
+		// Display a toast for editor plugins or `@tool` scripts.
+		ERR_PRINT_ED(s);
 		r_error.error = Callable::CallError::CALL_OK;
 	}
 
@@ -922,7 +923,8 @@ struct VariantUtilityFunctions {
 			}
 		}
 
-		WARN_PRINT(s);
+		// Display a toast for editor plugins or `@tool` scripts.
+		WARN_PRINT_ED(s);
 		r_error.error = Callable::CallError::CALL_OK;
 	}
 

doc/classes/@GlobalScope.xml

@@ -908,7 +908,7 @@
 		</method>
 		<method name="push_error" qualifiers="vararg">
 			<description>
-				Pushes an error message to Godot's built-in debugger and to the OS terminal.
+				Pushes an error message to Godot's built-in debugger and to the OS terminal. When used in an [EditorPlugin] or [code]@tool[/code] script, this also displays an error toast in the editor.
 				[codeblocks]
 				[gdscript]
 				push_error("test error") # Prints "test error" to debugger and terminal as error call
@@ -922,7 +922,7 @@
 		</method>
 		<method name="push_warning" qualifiers="vararg">
 			<description>
-				Pushes a warning message to Godot's built-in debugger and to the OS terminal.
+				Pushes a warning message to Godot's built-in debugger and to the OS terminal. When used in an [EditorPlugin] or [code]@tool[/code] script, this also displays a warning toast in the editor.
 				[codeblocks]
 				[gdscript]
 				push_warning("test warning") # Prints "test warning" to debugger and terminal as warning call