Whitespace normalization.  Ran reindent.py over the entire source tree.
diff --git a/Demo/scripts/mboxconvert.py b/Demo/scripts/mboxconvert.py
index 996537d..ba1f734 100755
--- a/Demo/scripts/mboxconvert.py
+++ b/Demo/scripts/mboxconvert.py
@@ -13,111 +13,111 @@
 import regex
 
 def main():
-	dofile = mmdf
-	try:
-		opts, args = getopt.getopt(sys.argv[1:], 'f')
-	except getopt.error, msg:
-		sys.stderr.write('%s\n' % msg)
-		sys.exit(2)
-	for o, a in opts:
-		if o == '-f':
-			dofile = message
-	if not args:
-		args = ['-']
-	sts = 0
-	for arg in args:
-		if arg == '-' or arg == '':
-			sts = dofile(sys.stdin) or sts
-		elif os.path.isdir(arg):
-			sts = mh(arg) or sts
-		elif os.path.isfile(arg):
-			try:
-				f = open(arg)
-			except IOError, msg:
-				sys.stderr.write('%s: %s\n' % (arg, msg))
-				sts = 1
-				continue
-			sts = dofile(f) or sts
-			f.close()
-		else:
-			sys.stderr.write('%s: not found\n' % arg)
-			sts = 1
-	if sts:
-		sys.exit(sts)
+    dofile = mmdf
+    try:
+        opts, args = getopt.getopt(sys.argv[1:], 'f')
+    except getopt.error, msg:
+        sys.stderr.write('%s\n' % msg)
+        sys.exit(2)
+    for o, a in opts:
+        if o == '-f':
+            dofile = message
+    if not args:
+        args = ['-']
+    sts = 0
+    for arg in args:
+        if arg == '-' or arg == '':
+            sts = dofile(sys.stdin) or sts
+        elif os.path.isdir(arg):
+            sts = mh(arg) or sts
+        elif os.path.isfile(arg):
+            try:
+                f = open(arg)
+            except IOError, msg:
+                sys.stderr.write('%s: %s\n' % (arg, msg))
+                sts = 1
+                continue
+            sts = dofile(f) or sts
+            f.close()
+        else:
+            sys.stderr.write('%s: not found\n' % arg)
+            sts = 1
+    if sts:
+        sys.exit(sts)
 
 numeric = regex.compile('[1-9][0-9]*')
 
 def mh(dir):
-	sts = 0
-	msgs = os.listdir(dir)
-	for msg in msgs:
-		if numeric.match(msg) != len(msg):
-			continue
-		fn = os.path.join(dir, msg)
-		try:
-			f = open(fn)
-		except IOError, msg:
-			sys.stderr.write('%s: %s\n' % (fn, msg))
-			sts = 1
-			continue
-		sts = message(f) or sts
-	return sts
+    sts = 0
+    msgs = os.listdir(dir)
+    for msg in msgs:
+        if numeric.match(msg) != len(msg):
+            continue
+        fn = os.path.join(dir, msg)
+        try:
+            f = open(fn)
+        except IOError, msg:
+            sys.stderr.write('%s: %s\n' % (fn, msg))
+            sts = 1
+            continue
+        sts = message(f) or sts
+    return sts
 
 def mmdf(f):
-	sts = 0
-	while 1:
-		line = f.readline()
-		if not line:
-			break
-		if line == '\1\1\1\1\n':
-			sts = message(f, line) or sts
-		else:
-			sys.stderr.write(
-				'Bad line in MMFD mailbox: %r\n' % (line,))
-	return sts
+    sts = 0
+    while 1:
+        line = f.readline()
+        if not line:
+            break
+        if line == '\1\1\1\1\n':
+            sts = message(f, line) or sts
+        else:
+            sys.stderr.write(
+                    'Bad line in MMFD mailbox: %r\n' % (line,))
+    return sts
 
 counter = 0 # for generating unique Message-ID headers
 
 def message(f, delimiter = ''):
-	sts = 0
-	# Parse RFC822 header
-	m = rfc822.Message(f)
-	# Write unix header line
-	fullname, email = m.getaddr('From')
-	tt = m.getdate('Date')
-	if tt:
-		t = time.mktime(tt)
-	else:
-		sys.stderr.write(
-			'Unparseable date: %r\n' % (m.getheader('Date'),))
-		t = os.fstat(f.fileno())[stat.ST_MTIME]
-	print 'From', email, time.ctime(t)
-	# Copy RFC822 header
-	for line in m.headers:
-		print line,
-	# Invent Message-ID header if none is present
-	if not m.has_key('message-id'):
-		global counter
-		counter = counter + 1
-		msgid = "<%s.%d>" % (hex(t), counter)
-		sys.stderr.write("Adding Message-ID %s (From %s)\n" %
-				 (msgid, email))
-		print "Message-ID:", msgid
-	print
-	# Copy body
-	while 1:
-		line = f.readline()
-		if line == delimiter:
-			break
-		if not line:
-			sys.stderr.write('Unexpected EOF in message\n')
-			sts = 1
-			break
-		if line[:5] == 'From ':
-			line = '>' + line
-		print line,
-	# Print trailing newline
-	print
-	return sts
+    sts = 0
+    # Parse RFC822 header
+    m = rfc822.Message(f)
+    # Write unix header line
+    fullname, email = m.getaddr('From')
+    tt = m.getdate('Date')
+    if tt:
+        t = time.mktime(tt)
+    else:
+        sys.stderr.write(
+                'Unparseable date: %r\n' % (m.getheader('Date'),))
+        t = os.fstat(f.fileno())[stat.ST_MTIME]
+    print 'From', email, time.ctime(t)
+    # Copy RFC822 header
+    for line in m.headers:
+        print line,
+    # Invent Message-ID header if none is present
+    if not m.has_key('message-id'):
+        global counter
+        counter = counter + 1
+        msgid = "<%s.%d>" % (hex(t), counter)
+        sys.stderr.write("Adding Message-ID %s (From %s)\n" %
+                         (msgid, email))
+        print "Message-ID:", msgid
+    print
+    # Copy body
+    while 1:
+        line = f.readline()
+        if line == delimiter:
+            break
+        if not line:
+            sys.stderr.write('Unexpected EOF in message\n')
+            sts = 1
+            break
+        if line[:5] == 'From ':
+            line = '>' + line
+        print line,
+    # Print trailing newline
+    print
+    return sts
 
 main()