From 51dbc4c879160c1ee4cf159595368676ced09500 Mon Sep 17 00:00:00 2001
From: Georg Brandl <georg@python.org>
Date: Fri, 31 Mar 2006 15:59:13 +0000
Subject: [PATCH] traceback now shows error position for all SyntaxError
 subclasses, e.g. IndentationError. (bug #1447885)

---
 Lib/test/test_traceback.py | 10 ++++++++++
 Lib/traceback.py           |  2 +-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/Lib/test/test_traceback.py b/Lib/test/test_traceback.py
index 29a120f532..269c6283c1 100644
--- a/Lib/test/test_traceback.py
+++ b/Lib/test/test_traceback.py
@@ -23,6 +23,9 @@ class TracebackCases(unittest.TestCase):
     def syntax_error_without_caret(self):
         # XXX why doesn't compile raise the same traceback?
         import test.badsyntax_nocaret
+    
+    def syntax_error_bad_indentation(self):
+        compile("def spam():\n  print 1\n print 2", "?", "exec")
 
     def test_caret(self):
         err = self.get_exception_format(self.syntax_error_with_caret,
@@ -40,6 +43,13 @@ class TracebackCases(unittest.TestCase):
         self.assert_(len(err) == 3)
         self.assert_(err[1].strip() == "[x for x in x] = x")
 
+    def test_bad_indentation(self):
+        err = self.get_exception_format(self.syntax_error_bad_indentation,
+                                        IndentationError)
+        self.assert_(len(err) == 4)
+        self.assert_("^" in err[2])
+        self.assert_(err[1].strip() == "print 2")
+
     def test_bug737473(self):
         import sys, os, tempfile, time
 
diff --git a/Lib/traceback.py b/Lib/traceback.py
index d4a40114ea..4047ca5711 100644
--- a/Lib/traceback.py
+++ b/Lib/traceback.py
@@ -165,7 +165,7 @@ def format_exception_only(etype, value):
     if value is None:
         list.append(str(stype) + '\n')
     else:
-        if etype is SyntaxError:
+        if issubclass(etype, SyntaxError):
             try:
                 msg, (filename, lineno, offset, line) = value
             except:
-- 
2.40.0