[3.11] gh-93883: elide traceback indicators when possible (GH-93994) (GH-94740)

Elide traceback column indicators when the entire line of the
frame is implicated.  This reduces traceback length and draws
more attention to the remaining (very relevant) indicators.

Example:
```
Traceback (most recent call last):
  File "query.py", line 99, in <module>
    bar()
  File "query.py", line 66, in bar
    foo()
  File "query.py", line 37, in foo
    magic_arithmetic('foo')
  File "query.py", line 18, in magic_arithmetic
    return add_counts(x) / 25
           ^^^^^^^^^^^^^
  File "query.py", line 24, in add_counts
    return 25 + query_user(user1) + query_user(user2)
                ^^^^^^^^^^^^^^^^^
  File "query.py", line 32, in query_user
    return 1 + query_count(db, response['a']['b']['c']['user'], retry=True)
                               ~~~~~~~~~~~~~~~~~~^^^^^
TypeError: 'NoneType' object is not subscriptable
```

Automerge-Triggered-By: GH:pablogsal

1 files changed, 2 insertions, 2 deletions

diff --git a/Lib/test/test_cmd_line_script.py b/Lib/test/test_cmd_line_script.py
index d783af6..9e98edf 100644
--- a/Lib/test/test_cmd_line_script.py
+++ b/Lib/test/test_cmd_line_script.py
@@ -549,10 +549,10 @@ class CmdLineTest(unittest.TestCase):
             script_name = _make_test_script(script_dir, 'script', script)
             exitcode, stdout, stderr = assert_python_failure(script_name)
             text = stderr.decode('ascii').split('\n')
-            self.assertEqual(len(text), 6)
+            self.assertEqual(len(text), 5)
             self.assertTrue(text[0].startswith('Traceback'))
             self.assertTrue(text[1].startswith('  File '))
-            self.assertTrue(text[4].startswith('NameError'))
+            self.assertTrue(text[3].startswith('NameError'))
 
     def test_non_ascii(self):
         # Mac OS X denies the creation of a file with an invalid UTF-8 name.