diff --git a/Mac/Tools/IDE/PyBrowser.py b/Mac/Tools/IDE/PyBrowser.py
index 19319a17572..c8e5066c4d1 100644
--- a/Mac/Tools/IDE/PyBrowser.py
+++ b/Mac/Tools/IDE/PyBrowser.py
@@ -13,7 +13,7 @@ opensolidid = struct.pack('h', 471)
 
 arrows = (nullid, closedid, openid, closedsolidid, opensolidid)
 
-has_ctlcharsRE = re.compile('[\000-\037\177-\377]')
+has_ctlcharsRE = re.compile(r'[\000-\037\177-\377]')
 def ctlcharsREsearch(str):
 	if has_ctlcharsRE.search(str) is None:
 		return -1
diff --git a/Mac/Tools/IDE/PyEdit.py b/Mac/Tools/IDE/PyEdit.py
index ac6cc0e428f..10f583faee0 100644
--- a/Mac/Tools/IDE/PyEdit.py
+++ b/Mac/Tools/IDE/PyEdit.py
@@ -790,7 +790,7 @@ def _escape(where, what) :
 
 def _makewholewordpattern(word):
 	# first, escape special regex chars
-	for esc in "\\[]().*^+$?":
+	for esc in "\\[]()|.*^+$?":
 		word = _escape(word, esc)
 	notwordcharspat = '[^' + _wordchars + ']'
 	pattern = '(' + word + ')'
@@ -1166,7 +1166,7 @@ def execstring(pytext, globals, locals, filename="<string>", debugging=0,
 		PyDebugger.stop()
 
 
-_identifieRE = re.compile("[A-Za-z_][A-Za-z_0-9]*")
+_identifieRE = re.compile(r"[A-Za-z_][A-Za-z_0-9]*")
 
 def identifieRE_match(str):
 	match = _identifieRE.match(str)
diff --git a/Mac/Tools/IDE/PyFontify.py b/Mac/Tools/IDE/PyFontify.py
index b5d61027771..5680aa871ac 100644
--- a/Mac/Tools/IDE/PyFontify.py
+++ b/Mac/Tools/IDE/PyFontify.py
@@ -19,15 +19,16 @@ sublist is not used, hence always None.
 # Many thanks for regular expression debugging & authoring are due to:
 #	Tim (the-incredib-ly y'rs) Peters and Cristian Tismer
 # So, who owns the copyright? ;-) How about this:
-# Copyright 1996-2000: 
+# Copyright 1996-2001: 
 #	Mitchell S. Chapman,
 #	Zachary Roadhouse,
 #	Tim Peters,
 #	Just van Rossum
 
-__version__ = "0.3.3"
+__version__ = "0.4"
 
-import string, re
+import string
+import re
 
 # First a little helper, since I don't like to repeat things. (Tismer speaking)
 import string
@@ -43,50 +44,47 @@ keywordsList = [
 	"break", "else", "if", "or", "while",
 	"class", "except", "import", "pass",
 	"continue", "finally", "in", "print",
-	"def", "for", "is", "raise"]
+	"def", "for", "is", "raise", "yield"]
 
 # Build up a regular expression which will match anything
 # interesting, including multi-line triple-quoted strings.
-commentPat = "#.*"
+commentPat = r"#[^\n]*"
 
-pat = "q[^\q\n]*\(\\\\[\000-\377][^\q\n]*\)*q"
-quotePat = replace(pat, "q", "'") + "\|" + replace(pat, 'q', '"')
+pat = r"q[^\\q\n]*(\\[\000-\377][^\\q\n]*)*q"
+quotePat = replace(pat, "q", "'") + "|" + replace(pat, 'q', '"')
 
 # Way to go, Tim!
-pat = """
+pat = r"""
 	qqq
 	[^\\q]*
-	\(
-		\(	\\\\[\000-\377]
-		\|	q
-			\(	\\\\[\000-\377]
-			\|	[^\\q]
-			\|	q
-				\(	\\\\[\000-\377]
-				\|	[^\\q]
-				\)
-			\)
-		\)
+	(
+		(	\\[\000-\377]
+		|	q
+			(	\\[\000-\377]
+			|	[^\q]
+			|	q
+				(	\\[\000-\377]
+				|	[^\\q]
+				)
+			)
+		)
 		[^\\q]*
-	\)*
+	)*
 	qqq
 """
 pat = string.join(string.split(pat), '')	# get rid of whitespace
-tripleQuotePat = replace(pat, "q", "'") + "\|" + replace(pat, 'q', '"')
+tripleQuotePat = replace(pat, "q", "'") + "|" + replace(pat, 'q', '"')
 
 # Build up a regular expression which matches all and only
 # Python keywords. This will let us skip the uninteresting
 # identifier references.
 # nonKeyPat identifies characters which may legally precede
 # a keyword pattern.
-nonKeyPat = "\(^\|[^a-zA-Z0-9_.\"']\)"
+nonKeyPat = r"(^|[^a-zA-Z0-9_.\"'])"
 
-keyPat = nonKeyPat + "\("
-for keyword in keywordsList:
-	keyPat = keyPat + keyword + "\|"
-keyPat = keyPat[:-2] + "\)" + nonKeyPat
+keyPat = nonKeyPat + "(" + "|".join(keywordsList) + ")" + nonKeyPat
 
-matchPat = commentPat + "\|" + keyPat + "\|" + tripleQuotePat + "\|" + quotePat
+matchPat = commentPat + "|" + keyPat + "|" + tripleQuotePat + "|" + quotePat
 matchRE = re.compile(matchPat)
 
 idKeyPat = "[ \t]*[A-Za-z_][A-Za-z_0-9.]*"	# Ident w. leading whitespace.
@@ -111,7 +109,10 @@ def fontify(pytext, searchfrom = 0, searchto = None):
 	end = searchfrom
 	while 1:
 		m = search(pytext, end)
-		if not m or m.start() >= searchto:
+		if m is None:
+			break	# EXIT LOOP
+		start = m.start()
+		if start >= searchto:
 			break	# EXIT LOOP
 		match = m.group(0)
 		end = start + len(match)
@@ -132,10 +133,12 @@ def fontify(pytext, searchfrom = 0, searchto = None):
 			# following identifier.
 			if match in ["def", "class"]:
 				m = idSearch(pytext, end)
-				if m and m.start() == end:
-					match = m.group(0)
-					end = start + len(match)
-					tags_append((identifierTag, start, end, None))
+				if m is not None:
+					start = m.start()
+					if start == end:
+						match = m.group(0)
+						end = start + len(match)
+						tags_append((identifierTag, start, end, None))
 		elif c == "#":
 			tags_append((commentTag, start, end, None))
 		else:
diff --git a/Mac/Tools/IDE/Wcontrols.py b/Mac/Tools/IDE/Wcontrols.py
index 7a88ccad6d8..739408408b1 100644
--- a/Mac/Tools/IDE/Wcontrols.py
+++ b/Mac/Tools/IDE/Wcontrols.py
@@ -381,14 +381,6 @@ class Scrollbar(ControlWidget):
 			return self._value
 	
 
-class __xxxx_PopupControl(ControlWidget):
-	
-	def __init__(self, possize, title = "Button", callback = None):
-		procID = Controls.popupMenuProc	# | Controls.useWFont
-		ControlWidget.__init__(self, possize, title, procID, callback, 0, 0, 1)
-		self._isdefault = 0
-	
-
 def _scalebarvalue(absmin, absmax, curmin, curmax):
 	if curmin <= absmin and curmax >= absmax:
 		return None