`yield`, `break`, and `continue` automatically dedent

Previously `return`, `raise`, and `pass` did; now these do as well.  The tests
for these were copied from the tests for those.

IPython/core/inputsplitter.py

@@ -115,7 +115,11 b" dedent_re = re.compile('|'.join(["
     r'^\s+raise\([^\)]*\).*$', # wacky raise with immediate open paren
     r'^\s+return(\s.*)?$', # normal return (+ space + other stuff, maybe)
     r'^\s+return\([^\)]*\).*$', # wacky return with immediate open paren
-    r'^\s+pass\s*$' # pass (optionally followed by trailing spaces)
+    r'^\s+yield(\s.*)?$', # normal yield (+ space + other stuff, maybe)
+    r'^\s+yield\([^\)]*\).*$', # wacky yield with immediate open paren
+    r'^\s+pass\s*$', # pass (optionally followed by trailing spaces)
+    r'^\s+break\s*$', # break (optionally followed by trailing spaces)
+    r'^\s+continue\s*$', # continue (optionally followed by trailing spaces)
 ]))
 ini_spaces_re = re.compile(r'^([ \t\r\f\v]+)')
 

IPython/core/tests/test_inputsplitter.py

@@ -227,6 +227,26 b' class InputSplitterTestCase(unittest.TestCase):'
         isp.push('if 1:\n     pass   ')
         self.assertEqual(isp.indent_spaces, 0)
 
+    def test_dedent_break(self):
+        isp = self.isp # shorthand
+        # should NOT cause dedent
+        isp.push('while 1:\n    breaks = 5')
+        self.assertEqual(isp.indent_spaces, 4)
+        isp.push('while 1:\n     break')
+        self.assertEqual(isp.indent_spaces, 0)
+        isp.push('while 1:\n     break   ')
+        self.assertEqual(isp.indent_spaces, 0)
+
+    def test_dedent_continue(self):
+        isp = self.isp # shorthand
+        # should NOT cause dedent
+        isp.push('while 1:\n    continues = 5')
+        self.assertEqual(isp.indent_spaces, 4)
+        isp.push('while 1:\n     continue')
+        self.assertEqual(isp.indent_spaces, 0)
+        isp.push('while 1:\n     continue   ')
+        self.assertEqual(isp.indent_spaces, 0)
+
     def test_dedent_raise(self):
         isp = self.isp # shorthand
         # should NOT cause dedent
@@ -253,6 +273,20 b' class InputSplitterTestCase(unittest.TestCase):'
         isp.push('if 1:\n     return(0)')
         self.assertEqual(isp.indent_spaces, 0)
 
+    def test_dedent_yield(self):
+        isp = self.isp # shorthand
+        # should NOT cause dedent
+        isp.push('if 1:\n    yielding = 4')
+        self.assertEqual(isp.indent_spaces, 4)
+        isp.push('if 1:\n     yield 5 + 493')
+        self.assertEqual(isp.indent_spaces, 0)
+        isp.push('if 1:\n     yield')
+        self.assertEqual(isp.indent_spaces, 0)
+        isp.push('if 1:\n     yield      ')
+        self.assertEqual(isp.indent_spaces, 0)
+        isp.push('if 1:\n     yield(0)')
+        self.assertEqual(isp.indent_spaces, 0)
+
     def test_push(self):
         isp = self.isp
         self.assertTrue(isp.push('x=1'))