diff --git a/Mac/scripts/MkDistr.py b/Mac/scripts/MkDistr.py
index a8728ab94fd..f446b343c51 100644
--- a/Mac/scripts/MkDistr.py
+++ b/Mac/scripts/MkDistr.py
@@ -16,7 +16,7 @@
 #
 from MkDistr_ui import *
 import fnmatch
-import regex
+import re
 import os
 import sys
 import macfs
@@ -187,7 +187,7 @@ class ExcMatcher(Matcher):
 		pat = fnmatch.translate(src)
 		if DEBUG:
 			print 'PATTERN', `src`, 'REGEX', `pat`
-		self.relist.append(regex.compile(pat))
+		self.relist.append(re.compile(pat))
 		
 	def unrebuild1(self, num, src):
 		del self.relist[num]
@@ -196,7 +196,7 @@ class ExcMatcher(Matcher):
 		comps = os.path.split(path)
 		file = comps[-1]
 		for pat in self.relist:
-			if pat and pat.match(file) == len(file):
+			if pat and pat.match(file):
 				if DEBUG:
 					print 'excmatch', file, pat
 				return 1
diff --git a/Mac/scripts/fullbuild.py b/Mac/scripts/fullbuild.py
index 73ccc8f27b2..4f718fd0bad 100644
--- a/Mac/scripts/fullbuild.py
+++ b/Mac/scripts/fullbuild.py
@@ -16,7 +16,7 @@ import sys
 import macfs
 import MacOS
 import EasyDialogs
-import regex
+import re
 import string
 
 import aetools
@@ -278,11 +278,11 @@ def incbuildno(filename):
 	line = fp.readline()
 	fp.close()
 	
-	pat = regex.compile('#define BUILD \([0-9][0-9]*\)')
-	pat.match(line)
-	buildno = pat.group(1)
-	if not buildno:
+	pat = re.compile('#define BUILD ([0-9]+)')
+	m = pat.search(line)
+	if not m or not m.group(1):
 		raise 'Incorrect macbuildno.h line', line
+	buildno = m.group(1)
 	new = string.atoi(buildno) + 1
 	fp = open(filename, 'w')
 	fp.write('#define BUILD %d\n'%new)
diff --git a/Mac/scripts/mkestrres.py b/Mac/scripts/mkestrres.py
index c19e6d0ba29..3ed3b34f6df 100644
--- a/Mac/scripts/mkestrres.py
+++ b/Mac/scripts/mkestrres.py
@@ -1,6 +1,6 @@
 """Parse sys/errno.h and Errors.h and create Estr resource"""
 
-import regex
+import re
 import macfs
 import string
 import Res
@@ -11,25 +11,25 @@ WRITE = 2
 smAllScripts = -3
 
 ERRNO_PROG="#define[ \t]+" \
-		   "\([A-Z0-9a-z_]+\)" \
+		   "([A-Z0-9a-z_]+)" \
 		   "[ \t]+" \
-		   "\([0-9]+\)" \
+		   "([0-9]+)" \
 		   "[ \t]*/\*[ \t]*" \
-		   "\(.*\)" \
+		   "(.*)" \
 		   "[ \t]*\*/"
 		   
 ERRORS_PROG="[ \t]*" \
-			"\([A-Z0-9a-z_]+\)" \
+			"([A-Z0-9a-z_]+)" \
 			"[ \t]*=[ \t]*" \
-			"\([-0-9]+\)" \
+			"([-0-9]+)" \
 			"[, \t]*/\*[ \t]*" \
-			"\(.*\)" \
+			"(.*)" \
 			"[ \t]*\*/"
 		   
 ERRORS_PROG_2="[ \t]*" \
-			"\([A-Z0-9a-z_]+\)" \
+			"([A-Z0-9a-z_]+)" \
 			"[ \t]*=[ \t]*" \
-			"\([-0-9]+\)" \
+			"([-0-9]+)" \
 			"[, \t]*"
 
 def Pstring(str):
@@ -58,12 +58,13 @@ def writepython(fp, dict):
 	
 
 def parse_errno_h(fp, dict):
-	errno_prog = regex.compile(ERRNO_PROG)
+	errno_prog = re.compile(ERRNO_PROG)
 	for line in fp.readlines():
-		if errno_prog.match(line) > 0:
-			number = string.atoi(errno_prog.group(2))
-			name = errno_prog.group(1)
-			desc = string.strip(errno_prog.group(3))
+		m = errno_prog.match(line)
+		if m:
+			number = string.atoi(m.group(2))
+			name = m.group(1)
+			desc = string.strip(m.group(3))
 			
 			if not dict.has_key(number):
 				dict[number] = desc, name
@@ -73,18 +74,20 @@ def parse_errno_h(fp, dict):
 				print '\t', (desc, name)
 								
 def parse_errors_h(fp, dict):
-	errno_prog = regex.compile(ERRORS_PROG)
-	errno_prog_2 = regex.compile(ERRORS_PROG_2)
+	errno_prog = re.compile(ERRORS_PROG)
+	errno_prog_2 = re.compile(ERRORS_PROG_2)
 	for line in fp.readlines():
 		match = 0
-		if errno_prog.match(line) > 0:
-			number = string.atoi(errno_prog.group(2))
-			name = errno_prog.group(1)
-			desc = string.strip(errno_prog.group(3))
+		m = errno_prog.match(line)
+		m2 = errno_prog_2.match(line)
+		if m:
+			number = string.atoi(m.group(2))
+			name = m.group(1)
+			desc = string.strip(m.group(3))
 			match=1
-		elif errno_prog_2.match(line) > 0:
-			number = string.atoi(errno_prog_2.group(2))
-			name = errno_prog_2.group(1)
+		elif m2:
+			number = string.atoi(m2.group(2))
+			name = m2.group(1)
 			desc = name
 			match=1
 		if match: