Fragment fixes (and workarounds)

fragments.py: add more parent offsets. blacken buffer
parser3.py: additional grammar rules for fragment parser

Misc small typos and corrections

uncompyle6/parsers/parse3.py

@@ -68,6 +68,11 @@ class Python3Parser(PythonParser):
         set_comp_func ::= BUILD_SET_0 LOAD_FAST FOR_ITER store comp_iter
                           JUMP_BACK RETURN_VALUE RETURN_LAST
 
+        # FIXME: This is used only in the fragment parser
+        # Fix the fragment parser so that it adds RETURN_LAST
+        set_comp_func ::= BUILD_SET_0 LOAD_FAST FOR_ITER store comp_iter
+                          JUMP_BACK RETURN_VALUE
+
         set_comp_func ::= BUILD_SET_0 LOAD_FAST FOR_ITER store comp_iter
                           COME_FROM JUMP_BACK RETURN_VALUE RETURN_LAST
 
@@ -341,6 +346,10 @@ class Python3Parser(PythonParser):
         stmt ::= return_closure
         return_closure ::= LOAD_CLOSURE RETURN_VALUE RETURN_LAST
 
+        # FIXME: This is used only in the fragment parser
+        # Fix the fragment parser so that it adds RETURN_LAST
+        return_closure ::= LOAD_CLOSURE RETURN_VALUE
+
         stmt ::= whileTruestmt
         ifelsestmt ::= testexpr c_stmts_opt JUMP_FORWARD else_suite _come_froms
         """

uncompyle6/semantics/consts.py

@@ -418,7 +418,6 @@ TABLE_DIRECT = {
     'except_suite_finalize':     ( '%+%c%-%C', 1, (3, maxint, '') ),
 
     'pass':	            ( '%|pass\n', ),
-    'STORE_FAST':	    ( '%{pattr}', ),
     'kv':		    ( '%c: %c', 3, 1 ),
     'kv2':		    ( '%c: %c', 1, 2 ),
     'import':               ( '%|import %c\n', 2),

uncompyle6/semantics/pysource.py

@@ -1443,7 +1443,7 @@ class SourceWalker(GenericASTTraversal, object):
         list_if = None
         assert n == "comp_iter"
 
-        # find innermost node
+        # find inner-most node
         while n == "comp_iter":
             n = n[0]  # recurse one step
             # FIXME: adjust for set comprehension