Whitespace normalization.

1 files changed, 113 insertions, 113 deletions

diff --git a/Lib/pty.py b/Lib/pty.py
index 12c9093..ef2113b 100644
--- a/Lib/pty.py
+++ b/Lib/pty.py
@@ -1,9 +1,9 @@
 """Pseudo terminal utilities."""
 
 # Bugs: No signal handling.  Doesn't set slave termios and window size.
-#	Only tested on Linux.
-# See:  W. Richard Stevens. 1992.  Advanced Programming in the 
-#	UNIX Environment.  Chapter 19.
+#       Only tested on Linux.
+# See:  W. Richard Stevens. 1992.  Advanced Programming in the
+#       UNIX Environment.  Chapter 19.
 # Author: Steen Lumholt -- with additions by Guido.
 
 from select import select
@@ -17,133 +17,133 @@ STDERR_FILENO = 2
 CHILD = 0
 
 def openpty():
-	"""openpty() -> (master_fd, slave_fd)
-	Open a pty master/slave pair, using os.openpty() if possible."""
+    """openpty() -> (master_fd, slave_fd)
+    Open a pty master/slave pair, using os.openpty() if possible."""
 
-	try:
-		return os.openpty()
-	except (AttributeError, OSError):
-		pass
-	master_fd, slave_name = _open_terminal()
-	slave_fd = slave_open(slave_name)
-	return master_fd, slave_fd
+    try:
+        return os.openpty()
+    except (AttributeError, OSError):
+        pass
+    master_fd, slave_name = _open_terminal()
+    slave_fd = slave_open(slave_name)
+    return master_fd, slave_fd
 
 def master_open():
-	"""master_open() -> (master_fd, slave_name)
-	Open a pty master and return the fd, and the filename of the slave end.
-	Deprecated, use openpty() instead."""
+    """master_open() -> (master_fd, slave_name)
+    Open a pty master and return the fd, and the filename of the slave end.
+    Deprecated, use openpty() instead."""
 
-	try:
-		master_fd, slave_fd = os.openpty()
-	except (AttributeError, OSError):
-		pass
-	else:
-		slave_name = os.ttyname(slave_fd)
-		os.close(slave_fd)
-		return master_fd, slave_name
+    try:
+        master_fd, slave_fd = os.openpty()
+    except (AttributeError, OSError):
+        pass
+    else:
+        slave_name = os.ttyname(slave_fd)
+        os.close(slave_fd)
+        return master_fd, slave_name
 
-	return _open_terminal()
+    return _open_terminal()
 
 def _open_terminal():
-	"""Open pty master and return (master_fd, tty_name).
-	SGI and generic BSD version, for when openpty() fails."""
-	try:
-		import sgi
-	except ImportError:
-		pass
-	else:
-		try:
-		    tty_name, master_fd = sgi._getpty(FCNTL.O_RDWR, 0666, 0)
-		except IOError, msg:
-			raise os.error, msg
-		return master_fd, tty_name
-	for x in 'pqrstuvwxyzPQRST':
-		for y in '0123456789abcdef':
-			pty_name = '/dev/pty' + x + y
-			try:
-				fd = os.open(pty_name, FCNTL.O_RDWR)
-			except os.error:
-				continue
-			return (fd, '/dev/tty' + x + y)
-	raise os.error, 'out of pty devices'
+    """Open pty master and return (master_fd, tty_name).
+    SGI and generic BSD version, for when openpty() fails."""
+    try:
+        import sgi
+    except ImportError:
+        pass
+    else:
+        try:
+            tty_name, master_fd = sgi._getpty(FCNTL.O_RDWR, 0666, 0)
+        except IOError, msg:
+            raise os.error, msg
+        return master_fd, tty_name
+    for x in 'pqrstuvwxyzPQRST':
+        for y in '0123456789abcdef':
+            pty_name = '/dev/pty' + x + y
+            try:
+                fd = os.open(pty_name, FCNTL.O_RDWR)
+            except os.error:
+                continue
+            return (fd, '/dev/tty' + x + y)
+    raise os.error, 'out of pty devices'
 
 def slave_open(tty_name):
-	"""slave_open(tty_name) -> slave_fd
-	Open the pty slave and acquire the controlling terminal, returning
-	opened filedescriptor.
-	Deprecated, use openpty() instead."""
+    """slave_open(tty_name) -> slave_fd
+    Open the pty slave and acquire the controlling terminal, returning
+    opened filedescriptor.
+    Deprecated, use openpty() instead."""
 
-	return os.open(tty_name, FCNTL.O_RDWR)
+    return os.open(tty_name, FCNTL.O_RDWR)
 
 def fork():
-	"""fork() -> (pid, master_fd)
-	Fork and make the child a session leader with a controlling terminal."""
-
-	try:
-		pid, fd = os.forkpty()
-	except (AttributeError, OSError):
-		pass
-	else:
-		if pid == CHILD:
-			try:
-				os.setsid()
-			except OSError:
-				# os.forkpty() already set us session leader
-				pass
-		return pid, fd
-
-	master_fd, slave_fd = openpty() 
-	pid = os.fork()
-	if pid == CHILD:
-		# Establish a new session.
-		os.setsid()
-		os.close(master_fd)
-
-		# Slave becomes stdin/stdout/stderr of child.
-		os.dup2(slave_fd, STDIN_FILENO)
-		os.dup2(slave_fd, STDOUT_FILENO)
-		os.dup2(slave_fd, STDERR_FILENO)
-		if (slave_fd > STDERR_FILENO):
-			os.close (slave_fd)
-
-	# Parent and child process.
-	return pid, master_fd
+    """fork() -> (pid, master_fd)
+    Fork and make the child a session leader with a controlling terminal."""
+
+    try:
+        pid, fd = os.forkpty()
+    except (AttributeError, OSError):
+        pass
+    else:
+        if pid == CHILD:
+            try:
+                os.setsid()
+            except OSError:
+                # os.forkpty() already set us session leader
+                pass
+        return pid, fd
+
+    master_fd, slave_fd = openpty()
+    pid = os.fork()
+    if pid == CHILD:
+        # Establish a new session.
+        os.setsid()
+        os.close(master_fd)
+
+        # Slave becomes stdin/stdout/stderr of child.
+        os.dup2(slave_fd, STDIN_FILENO)
+        os.dup2(slave_fd, STDOUT_FILENO)
+        os.dup2(slave_fd, STDERR_FILENO)
+        if (slave_fd > STDERR_FILENO):
+            os.close (slave_fd)
+
+    # Parent and child process.
+    return pid, master_fd
 
 def _writen(fd, data):
-	"""Write all the data to a descriptor."""
-	while data != '':
-		n = os.write(fd, data)
-		data = data[n:]
+    """Write all the data to a descriptor."""
+    while data != '':
+        n = os.write(fd, data)
+        data = data[n:]
 
 def _read(fd):
-	"""Default read function."""
-	return os.read(fd, 1024)
+    """Default read function."""
+    return os.read(fd, 1024)
 
 def _copy(master_fd, master_read=_read, stdin_read=_read):
-	"""Parent copy loop.
-	Copies  
-	  	pty master -> standard output	(master_read)
-	  	standard input -> pty master	(stdin_read)"""
-	while 1:
-		rfds, wfds, xfds = select(
-			[master_fd, STDIN_FILENO], [], [])
-		if master_fd in rfds:
-			data = master_read(master_fd)
-			os.write(STDOUT_FILENO, data)
-		if STDIN_FILENO in rfds:
-			data = stdin_read(STDIN_FILENO)
-			_writen(master_fd, data)
+    """Parent copy loop.
+    Copies
+            pty master -> standard output   (master_read)
+            standard input -> pty master    (stdin_read)"""
+    while 1:
+        rfds, wfds, xfds = select(
+                [master_fd, STDIN_FILENO], [], [])
+        if master_fd in rfds:
+            data = master_read(master_fd)
+            os.write(STDOUT_FILENO, data)
+        if STDIN_FILENO in rfds:
+            data = stdin_read(STDIN_FILENO)
+            _writen(master_fd, data)
 
 def spawn(argv, master_read=_read, stdin_read=_read):
-	"""Create a spawned process."""
-	if type(argv) == type(''):
-		argv = (argv,)
-	pid, master_fd = fork()
-	if pid == CHILD:
-		apply(os.execlp, (argv[0],) + argv)
-	mode = tty.tcgetattr(STDIN_FILENO)
-	tty.setraw(STDIN_FILENO)
-	try:
-		_copy(master_fd, master_read, stdin_read)
-	except:
-		tty.tcsetattr(STDIN_FILENO, tty.TCSAFLUSH, mode)
+    """Create a spawned process."""
+    if type(argv) == type(''):
+        argv = (argv,)
+    pid, master_fd = fork()
+    if pid == CHILD:
+        apply(os.execlp, (argv[0],) + argv)
+    mode = tty.tcgetattr(STDIN_FILENO)
+    tty.setraw(STDIN_FILENO)
+    try:
+        _copy(master_fd, master_read, stdin_read)
+    except:
+        tty.tcsetattr(STDIN_FILENO, tty.TCSAFLUSH, mode)