Merge pull request #13630 from Carreau/longerfail

DEBUG: on pexpect failure show 1000 chars buffer

IPython/core/inputtransformer2.py

@@ -733,8 +733,10 b' class MaybeAsyncCompile(Compile):'
         super().__init__()
         self.flags |= extra_flags
 
-    def __call__(self, *args, **kwds):
-        return compile(*args, **kwds)
+
+    if sys.version_info < (3,8):
+        def __call__(self, *args, **kwds):
+            return compile(*args, **kwds)
 
 
 class MaybeAsyncCommandCompiler(CommandCompiler):

IPython/core/tests/test_debugger.py

@@ -391,6 +391,7 b' def _decorator_skip_setup():'
     child = pexpect.spawn(
         sys.executable, ["-m", "IPython", "--colors=nocolor"], env=env
     )
+    child.str_last_chars = 1000
     child.timeout = 5 * IPYTHON_TESTING_TIMEOUT_SCALE
 
     child.expect("IPython")