diff --git a/gdb-port/parser-type-instrumentation-gdb.py b/gdb-port/parser-type-instrumentation-gdb.py
index eba357ce1d078532b0b989078d3cc85bdb7cb131..62e6310db52f4c6303ecd095eb3976db97634b3d 100644
--- a/gdb-port/parser-type-instrumentation-gdb.py
+++ b/gdb-port/parser-type-instrumentation-gdb.py
@@ -78,12 +78,12 @@ class HParserEnv:
 # parser_array = [top_level_parse.add_or_get_parser(gdb.parse_and_eval("((HSequence*) parser->env)->p_array[" + str(index) +"]")) for index in range(0, num_parsers)]
 # compare pointers for equality
 
-# TODO: consistent naming for member_parser, member_parser_pointers, 
+# TODO: consistent naming for member_parser, member_parser_pointers,
 
 class AttrBoolEnv(HParserEnv):
 	def __init__(self, parser, top_level_parse):
 		self.parser = parser
-	
+
 		member_parser_p =  gdb.parse_and_eval("((HAttrBool *) parser->env)->p")
 		self.member_parser = top_level_parse.add_or_get_parser(member_parser_p)
 		self.predicate_p =  gdb.parse_and_eval("((HAttrBool *) parser->env)->pred")
@@ -91,7 +91,7 @@ class AttrBoolEnv(HParserEnv):
 	
 	def __str__(self):
 		return str(self.member_parser)
-	
+
 class BitsEnv(HParserEnv):
 	def __init__(self, parser, top_level_parse):
 		self.parser = parser
@@ -179,7 +179,7 @@ class ChEnv(HParserEnv):
 
 	def __str__(self):
 		return str(self.ch_value)
-	
+
 class ChoiceEnv(HParserEnv):
 	def __init__(self, parser, top_level_parse):
 		super().__init__(parser, top_level_parse)
@@ -201,7 +201,7 @@ class ChoiceEnv(HParserEnv):
 			if parser_obj.name is None:
 				parser_obj.name_parser( self.name_from_vtable(parser_obj) )
 			self.member_parsers.append(parser_obj)
-	
+
 	def __str__(self):
 		return str([str(parser) for parser in self.member_parsers])
 
@@ -218,11 +218,10 @@ class ManyEnv(HParserEnv):
 	def __str__(self):
 		return "P: " + str(self.p) + ", sep: " + str(self.separator) + ", count: " + str(self.count)
 
-
 class NotEnv(HParserEnv):
 	def __init__(self, parser, top_level_parse):
 		self.parser = parser
-		
+
 		member_p = gdb.parse_and_eval("(HParser*) parser->env")
 		member_obj = top_level_parse.add_or_get_parser(member_p)
 		self.member_parser = member_obj
@@ -233,7 +232,7 @@ class NotEnv(HParserEnv):
 class NothingEnv(HParserEnv):
 	def __init__(self, parser, top_level_parse):
 		self.parser = parser
-		
+
 	def __str__(self):
 		return "[]"
 
@@ -261,7 +260,6 @@ vtable_to_env = {
 	'nothing_vt': NothingEnv,
 	'optional_vt': OptionalEnv
 	}
-	
 
 # When given a Parser object, decompose_parser() deduces its type from the vtable, and returns the appropriate HParserEnv subclass, containing member parsers and args
 # Not sure what to name it. Alternatives: