@@ -33,117 +33,117 @@
 new_interpreter = None
 
 def main():
-	global new_interpreter
-	usage = ('usage: %s -i /interpreter file-or-directory ...\n' %
-		 sys.argv[0])
-	try:
-		opts, args = getopt.getopt(sys.argv[1:], 'i:')
-	except getopt.error, msg:
-		err(msg + '\n')
-		err(usage)
-		sys.exit(2)
-	for o, a in opts:
-		if o == '-i':
-			new_interpreter = a
-	if not new_interpreter or new_interpreter[0] != '/' or not args:
-		err('-i option or file-or-directory missing\n')
-		err(usage)
-		sys.exit(2)
-	bad = 0
-	for arg in args:
-		if os.path.isdir(arg):
-			if recursedown(arg): bad = 1
-		elif os.path.islink(arg):
-			err(arg + ': will not process symbolic links\n')
-			bad = 1
-		else:
-			if fix(arg): bad = 1
-	sys.exit(bad)
+    global new_interpreter
+    usage = ('usage: %s -i /interpreter file-or-directory ...\n' %
+             sys.argv[0])
+    try:
+        opts, args = getopt.getopt(sys.argv[1:], 'i:')
+    except getopt.error, msg:
+        err(msg + '\n')
+        err(usage)
+        sys.exit(2)
+    for o, a in opts:
+        if o == '-i':
+            new_interpreter = a
+    if not new_interpreter or new_interpreter[0] != '/' or not args:
+        err('-i option or file-or-directory missing\n')
+        err(usage)
+        sys.exit(2)
+    bad = 0
+    for arg in args:
+        if os.path.isdir(arg):
+            if recursedown(arg): bad = 1
+        elif os.path.islink(arg):
+            err(arg + ': will not process symbolic links\n')
+            bad = 1
+        else:
+            if fix(arg): bad = 1
+    sys.exit(bad)
 
 ispythonprog = regex.compile('^[a-zA-Z0-9_]+\.py$')
 def ispython(name):
-	return ispythonprog.match(name) >= 0
+    return ispythonprog.match(name) >= 0
 
 def recursedown(dirname):
-	dbg('recursedown(' + `dirname` + ')\n')
-	bad = 0
-	try:
-		names = os.listdir(dirname)
-	except os.error, msg:
-		err(dirname + ': cannot list directory: ' + `msg` + '\n')
-		return 1
-	names.sort()
-	subdirs = []
-	for name in names:
-		if name in (os.curdir, os.pardir): continue
-		fullname = os.path.join(dirname, name)
-		if os.path.islink(fullname): pass
-		elif os.path.isdir(fullname):
-			subdirs.append(fullname)
-		elif ispython(name):
-			if fix(fullname): bad = 1
-	for fullname in subdirs:
-		if recursedown(fullname): bad = 1
-	return bad
+    dbg('recursedown(' + `dirname` + ')\n')
+    bad = 0
+    try:
+        names = os.listdir(dirname)
+    except os.error, msg:
+        err(dirname + ': cannot list directory: ' + `msg` + '\n')
+        return 1
+    names.sort()
+    subdirs = []
+    for name in names:
+        if name in (os.curdir, os.pardir): continue
+        fullname = os.path.join(dirname, name)
+        if os.path.islink(fullname): pass
+        elif os.path.isdir(fullname):
+            subdirs.append(fullname)
+        elif ispython(name):
+            if fix(fullname): bad = 1
+    for fullname in subdirs:
+        if recursedown(fullname): bad = 1
+    return bad
 
 def fix(filename):
-##	dbg('fix(' + `filename` + ')\n')
-	try:
-		f = open(filename, 'r')
-	except IOError, msg:
-		err(filename + ': cannot open: ' + `msg` + '\n')
-		return 1
-	line = f.readline()
-	fixed = fixline(line)
-	if line == fixed:
-		rep(filename+': no change\n')
-		f.close()
-		return
-	head, tail = os.path.split(filename)
-	tempname = os.path.join(head, '@' + tail)
-	try:
-		g = open(tempname, 'w')
-	except IOError, msg:
-		f.close()
-		err(tempname+': cannot create: '+`msg`+'\n')
-		return 1
-	rep(filename + ': updating\n')
-	g.write(fixed)
-	BUFSIZE = 8*1024
-	while 1:
-		buf = f.read(BUFSIZE)
-		if not buf: break
-		g.write(buf)
-	g.close()
-	f.close()
+##      dbg('fix(' + `filename` + ')\n')
+    try:
+        f = open(filename, 'r')
+    except IOError, msg:
+        err(filename + ': cannot open: ' + `msg` + '\n')
+        return 1
+    line = f.readline()
+    fixed = fixline(line)
+    if line == fixed:
+        rep(filename+': no change\n')
+        f.close()
+        return
+    head, tail = os.path.split(filename)
+    tempname = os.path.join(head, '@' + tail)
+    try:
+        g = open(tempname, 'w')
+    except IOError, msg:
+        f.close()
+        err(tempname+': cannot create: '+`msg`+'\n')
+        return 1
+    rep(filename + ': updating\n')
+    g.write(fixed)
+    BUFSIZE = 8*1024
+    while 1:
+        buf = f.read(BUFSIZE)
+        if not buf: break
+        g.write(buf)
+    g.close()
+    f.close()
 
-	# Finishing touch -- move files
+    # Finishing touch -- move files
 
-	# First copy the file's mode to the temp file
-	try:
-		statbuf = os.stat(filename)
-		os.chmod(tempname, statbuf[ST_MODE] & 07777)
-	except os.error, msg:
-		err(tempname + ': warning: chmod failed (' + `msg` + ')\n')
-	# Then make a backup of the original file as filename~
-	try:
-		os.rename(filename, filename + '~')
-	except os.error, msg:
-		err(filename + ': warning: backup failed (' + `msg` + ')\n')
-	# Now move the temp file to the original file
-	try:
-		os.rename(tempname, filename)
-	except os.error, msg:
-		err(filename + ': rename failed (' + `msg` + ')\n')
-		return 1
-	# Return succes
-	return 0
+    # First copy the file's mode to the temp file
+    try:
+        statbuf = os.stat(filename)
+        os.chmod(tempname, statbuf[ST_MODE] & 07777)
+    except os.error, msg:
+        err(tempname + ': warning: chmod failed (' + `msg` + ')\n')
+    # Then make a backup of the original file as filename~
+    try:
+        os.rename(filename, filename + '~')
+    except os.error, msg:
+        err(filename + ': warning: backup failed (' + `msg` + ')\n')
+    # Now move the temp file to the original file
+    try:
+        os.rename(tempname, filename)
+    except os.error, msg:
+        err(filename + ': rename failed (' + `msg` + ')\n')
+        return 1
+    # Return succes
+    return 0
 
 def fixline(line):
-	if line[:2] != '#!':
-		return line
-	if string.find(line, "python") < 0:
-		return line
-	return '#! %s\n' % new_interpreter
+    if line[:2] != '#!':
+        return line
+    if string.find(line, "python") < 0:
+        return line
+    return '#! %s\n' % new_interpreter
 
 main()