Support Ruby 3.4's new error message format

Author: hsbt

test/console/debugger_local_test.rb

@@ -34,7 +34,7 @@ def test_raised_is_accessible_from_repl
             type "catch Exception"
             type "c"
             type "_raised"
-            assert_line_text(/undefined local variable or method `foo' for main/)
+            assert_line_text(/undefined local variable or method [`']foo' for main/)
             type "c"
           end
         end
@@ -43,7 +43,7 @@ def test_raised_is_accessible_from_command
           debug_code(program) do
             type "catch Exception pre: p _raised"
             type "c"
-            assert_line_text(/undefined local variable or method `foo' for main/)
+            assert_line_text(/undefined local variable or method [`']foo' for main/)
             type "c"
           end
         end
@@ -96,7 +96,7 @@ def test_raised_doesnt_leak_to_program_binding
 
             # stops for NoMethodError because _raised is not defined in the program
             type "_raised"
-            assert_line_text(/undefined local variable or method `_raised' for main/)
+            assert_line_text(/undefined local variable or method [`']_raised' for main/)
             type "c"
           end
         end
@@ -155,7 +155,7 @@ def test_raised_doesnt_leak_to_program_binding
             type "c"
             # stops for NoMethodError because _return is not defined in the program
             type "_raised"
-            assert_line_text(/undefined local variable or method `_return' for main/)
+            assert_line_text(/undefined local variable or method [`']_return' for main/)
             type "c"
           end
         end

test/console/info_test.rb

@@ -257,7 +257,7 @@ def test_info_constant_with_expression_errors
 
         type "info constants foo"
         assert_line_text([
-          /eval error: undefined local variable or method `foo' for main/,
+          /eval error: undefined local variable or method [`']foo' for main/,
         ])
 
         type "c"