old_contents: #! /ufs/guido/bin/sgi/python
  #! /usr/local/python
  
  # xxci
  #
  # check in files for which rcsdiff returns nonzero exit status
  
  import sys
  import os
  from stat import *
  import commands
  import fnmatch
  import string
  
  EXECMAGIC = '\001\140\000\010'
  
  MAXSIZE = 200*1024 # Files this big must be binaries and are skipped.
  
  def getargs():
  	args = sys.argv[1:]
  	if args:
  		return args
  	print 'No arguments, checking almost *, in "ls -t" order'
  	list = []
  	for file in os.listdir(os.curdir):
  		if not skipfile(file):
  			list.append((getmtime(file), file))
  	list.sort()
  	if not list:
  		print 'Nothing to do -- exit 1'
  		sys.exit(1)
  	list.sort()
  	list.reverse()
  	for mtime, file in list: args.append(file)
  	return args
  
  def getmtime(file):
  	try:
  		st = os.stat(file)
  		return st[ST_MTIME]
  	except os.error:
  		return -1
  
  badnames = ['tags', 'TAGS', 'xyzzy', 'nohup.out', 'core']
  badprefixes = ['.', ',', '@', '#', 'o.']
  badsuffixes = \
  	['~', '.a', '.o', '.old', '.bak', '.orig', '.new', '.prev', '.not', \
  	 '.pyc', '.elc']
  
  def setup():
  	global ignore
  	ignore = badnames[:]
  	for p in badprefixes:
  		ignore.append(p + '*')
  	for p in badsuffixes:
  		ignore.append('*' + p)
  	try:
  		f = open('.xxcign', 'r')
  	except IOError:
  		return
  	ignore = ignore + string.split(f.read())
  
  def skipfile(file):
  	for p in ignore:
  		if fnmatch.fnmatch(file, p): return 1
  	try:
  		st = os.lstat(file)
  	except os.error:
  		return 1 # Doesn't exist -- skip it
  	# Skip non-plain files.
  	if not S_ISREG(st[ST_MODE]): return 1
  	# Skip huge files -- probably binaries.
  	if st[ST_SIZE] >= MAXSIZE: return 1
  	# Skip executables
  	try:
  		data = open(file, 'r').read(len(EXECMAGIC))
  		if data == EXECMAGIC: return 1
  	except:
  		pass
  	return 0
  
  def badprefix(file):
  	for bad in badprefixes:
  		if file[:len(bad)] == bad: return 1
  	return 0
  
  def badsuffix(file):
  	for bad in badsuffixes:
  		if file[-len(bad):] == bad: return 1
  	return 0
  
  def go(args):
  	for file in args:
  		print file + ':'
  		if differing(file):
  			showdiffs(file)
  			if askyesno('Check in ' + file + ' ? '):
  				sts = os.system('rcs -l ' + file) # ignored
  				sts = os.system('ci -l ' + file)
  
  def differing(file):
  	cmd = 'co -p ' + file + ' 2>/dev/null | cmp -s - ' + file
  	sts = os.system(cmd)
  	return sts != 0
  
  def showdiffs(file):
  	cmd = 'rcsdiff ' + file + ' 2>&1 | ${PAGER-more}'
  	sts = os.system(cmd)
  
  def askyesno(prompt):
  	s = raw_input(prompt)
  	return s in ['y', 'yes']
  
  setup()
  go(getargs())
  
new_contents: #! /ufs/guido/bin/sgi/python
  #! /usr/local/python
  
  # xxci
  #
  # check in files for which rcsdiff returns nonzero exit status
  
  import sys
  import os
  from stat import *
  import commands
  import fnmatch
  import string
  
  EXECMAGIC = '\001\140\000\010'
  
  MAXSIZE = 200*1024 # Files this big must be binaries and are skipped.
  
  def getargs():
  	args = sys.argv[1:]
  	if args:
  		return args
  	print 'No arguments, checking almost *, in "ls -t" order'
  	list = []
  	for file in os.listdir(os.curdir):
  		if not skipfile(file):
  			list.append((getmtime(file), file))
  	list.sort()
  	if not list:
  		print 'Nothing to do -- exit 1'
  		sys.exit(1)
  	list.sort()
  	list.reverse()
  	for mtime, file in list: args.append(file)
  	return args
  
  def getmtime(file):
  	try:
  		st = os.stat(file)
  		return st[ST_MTIME]
  	except os.error:
  		return -1
  
  badnames = ['tags', 'TAGS', 'xyzzy', 'nohup.out', 'core']
  badprefixes = ['.', ',', '@', '#', 'o.']
  badsuffixes = \
  	['~', '.a', '.o', '.old', '.bak', '.orig', '.new', '.prev', '.not', \
  	 '.pyc', '.elc']
  ignore = []
  
  def setup():
  	ignore[:] = badnames
  	for p in badprefixes:
  		ignore.append(p + '*')
  	for p in badsuffixes:
  		ignore.append('*' + p)
  	try:
  		f = open('.xxcign', 'r')
  	except IOError:
  		return
  	ignore[:] = ignore + string.split(f.read())
  
  def skipfile(file):
  	for p in ignore:
  		if fnmatch.fnmatch(file, p): return 1
  	try:
  		st = os.lstat(file)
  	except os.error:
  		return 1 # Doesn't exist -- skip it
  	# Skip non-plain files.
  	if not S_ISREG(st[ST_MODE]): return 1
  	# Skip huge files -- probably binaries.
  	if st[ST_SIZE] >= MAXSIZE: return 1
  	# Skip executables
  	try:
  		data = open(file, 'r').read(len(EXECMAGIC))
  		if data == EXECMAGIC: return 1
  	except:
  		pass
  	return 0
  
  def badprefix(file):
  	for bad in badprefixes:
  		if file[:len(bad)] == bad: return 1
  	return 0
  
  def badsuffix(file):
  	for bad in badsuffixes:
  		if file[-len(bad):] == bad: return 1
  	return 0
  
  def go(args):
  	for file in args:
  		print file + ':'
  		if differing(file):
  			showdiffs(file)
  			if askyesno('Check in ' + file + ' ? '):
  				sts = os.system('rcs -l ' + file) # ignored
  				sts = os.system('ci -l ' + file)
  
  def differing(file):
  	cmd = 'co -p ' + file + ' 2>/dev/null | cmp -s - ' + file
  	sts = os.system(cmd)
  	return sts != 0
  
  def showdiffs(file):
  	cmd = 'rcsdiff ' + file + ' 2>&1 | ${PAGER-more}'
  	sts = os.system(cmd)
  
  def askyesno(prompt):
  	s = raw_input(prompt)
  	return s in ['y', 'yes']
  
  setup()
  go(getargs())
  
subject: Change the way ignore is assigned to