support clear filename:function

Author: cocolato

Lib/pdb.py

@@ -1692,7 +1692,7 @@ def do_clear(self, arg):
                     if find_res:
                         _, filename, lineno = find_res
                     else:
-                        err = "Invalid line number or function name:(%r)" % arg
+                        err = "Invalid line number or function name:(%s)" % arg
             if not err:
                 bplist = self.get_breaks(filename, lineno)[:]
                 err = self.clear_break(filename, lineno)

Lib/test/test_pdb.py

@@ -4629,10 +4629,12 @@ def foo():
         """
         commands = """
             break main:foo
+            clear main:foo
             quit
         """
         stdout, stderr = self.run_pdb_script(script, commands)
         self.assertRegex(stdout, r"Breakpoint 1 at .*main\.py:3")
+        self.assertRegex(stdout, r"Deleted breakpoint 1 at .*main\.py:3")
 
 
 class ChecklineTests(unittest.TestCase):