refactors

--HG--
branch : pmacs2

application.py

@@ -8,37 +8,11 @@ import bufferlist, color, completer, keyinput, method, minibuffer, mode
 import util, window
 from point import Point
 
-def run(buffers, jump_to_line=None, init_mode=None):
-    # save terminal state so we can restore it when the program exits
-    attr = termios.tcgetattr(sys.stdin)
-    keyinput.disable_control_chars()
-
-    retval = 1
-    try:
-        retval = curses.wrapper(run_app, buffers, jump_to_line, init_mode)
-    except:
-        traceback.print_exc()
-
-    # restore terminal state
-    termios.tcsetattr(sys.stdin, termios.TCSANOW, attr)
-    return retval
-
-def run_app(stdscr, buffers, jump_to_line=None, init_mode=None):
-    curses.def_shell_mode()
-    a = Application(stdscr, buffers, jump_to_line, init_mode)
-    a.run()
-
-MAX_ERROR_DISPLAY = 128
-KILL_RING_LIMIT = 128
-WORD_LETTERS = list(string.letters + string.digits)
-ERROR_TIMEOUT = -1
-#ERROR_TIMEOUT = 2
-
 class Application(object):
     def __init__(self, stdscr, buffers=[], jump_to_line=None, init_mode=None):
         # initalize curses primitives
         self.stdscr = stdscr
-        (self.y, self.x) = self.stdscr.getmaxyx()
+        self.y, self.x = self.stdscr.getmaxyx()
 
         # initialize some basic stuff
         # a highlighted_range contains three things: (window, start_p, end_p)
@@ -51,7 +25,15 @@ class Application(object):
         self.mini_prompt        = ""
         self.error_string       = ""
         self.error_timestamp    = None
+        self.need_draw          = True
         self.input              = keyinput.Handler()
+
+        # some constants
+        self.error_timeout    = -1
+        self.max_error_len    = 192
+        self.max_num_kills    = 64
+        self.def_word_letters = string.letters + string.digits
+
         # let's prepopulate some default token colors
         self.token_colors       = {
             'comment':        ('red', 'default', 'bold'),
@@ -544,7 +526,8 @@ class Application(object):
                 self.kill_ring[-1] = self.kill_ring[-1] + s
             else:
                 self.kill_ring.append(s)
-        if KILL_RING_LIMIT and len(self.kill_ring) > KILL_RING_LIMIT:
+        #if KILL_RING_LIMIT and len(self.kill_ring) > KILL_RING_LIMIT:
+        if self.max_num_kills and len(self.kill_ring) > self.max_num_kills:
             self.kill_ring.pop(0)
     def pop_kill(self):
         return self.kill_ring.pop(-1)
@@ -605,16 +588,22 @@ class Application(object):
                 while i == curses.KEY_RESIZE:
                     i = self.win.getch()
                 self.resize_event()
+                self.need_draw = True
             err = ''
             try:
                 self.input.parse(i)
             except Exception, e:
                 err = str(e)
-            while len(self.input.tokens):
+
+            if self.input.tokens:
+                self.need_draw = True
+            while self.input.tokens:
                 t = self.input.tokens.pop(0)
                 self.active_window().mode.handle_token(t)
 
+            if self.need_draw:
                 self.draw(err)
+                self.need_draw = False
 
         # clear the error line; it might look confusing to the user
         try:
@@ -667,8 +656,8 @@ class Application(object):
             self.resize_event()
         if err:
             self.set_error(err)
-        if self.error_timestamp is not None and ERROR_TIMEOUT > 0 and \
+        if self.error_timestamp is not None and self.error_timeout > 0 and \
-            time.time() - self.error_timestamp > ERROR_TIMEOUT:
+            time.time() - self.error_timestamp > self.error_timeout:
             self.clear_error()
         (y, x) = self.stdscr.getmaxyx()
         if y != self.y or x != self.x:
@@ -861,10 +850,10 @@ class Application(object):
     def get_minibuffer_lines(self):
         lines, lines2 = [], []
         if self.error_string:
-            if len(self.error_string) < MAX_ERROR_DISPLAY:
+            if len(self.error_string) < self.max_error_len:
                 s = self.error_string
             else:
-                s = self.error_string[:MAX_ERROR_DISPLAY] + '...'
+                s = self.error_string[:self.max_error_len] + '...'
         elif self.mini_buffer_is_open():
             s = self.mini_prompt + self.mini_buffer.lines[0]
             lines2 = self.mini_buffer.lines[1:]
@@ -895,6 +884,11 @@ def open_plain_file(path, name=None, binary=False):
     else:
         raise Exception, "can't open %r; unsupported file type" % path
 
+def run_app(stdscr, buffers, jump_to_line=None, init_mode=None):
+    curses.def_shell_mode()
+    a = Application(stdscr, buffers, jump_to_line, init_mode)
+    a.run()
+
 if __name__ == "__main__":
     ciphers   = {
         'none': open_plain_file,
@@ -986,5 +980,17 @@ if __name__ == "__main__":
         paths.add(path)
         names.add(name)
 
+    # save terminal state so we can restore it when the program exits
+    attr = termios.tcgetattr(sys.stdin)
+    keyinput.disable_control_chars()
+
     # ok, now run our app
-    run(buffers, opts.goto, opts.mode)
+    retval = 1
+    try:
+        retval = curses.wrapper(run_app, buffers, opts.goto, opts.mode)
+    except:
+        traceback.print_exc()
+
+    # restore terminal state
+    termios.tcsetattr(sys.stdin, termios.TCSANOW, attr)
+    sys.exit(retval)

buffer/__init__.py

@@ -1,4 +1,4 @@
-import codecs, datetime, grp, md5, os, pwd, re, sets, shutil, stat, string
+import codecs, datetime, grp, md5, os, pwd, re, shutil, stat, string
 import fcntl, select, pty, threading
 import aes, dirutil, regex, highlight, lex, term
 from point import Point

buffer/emul.py

@@ -10,9 +10,10 @@ class XTermBuffer(Buffer, XTerm):
     modename = 'pipe'
     termtype = 'xterm'
     #termtype = 'vt100'
-    def __init__(self, cmd, args, name=None):
+    def __init__(self, app, cmd, args, name=None):
         XTerm.__init__(self)
         Buffer.__init__(self)
+        self.application = app
         self._name = name or '*XTerm*'
         self._pid, self._pty = pty.fork()
         if self._pid == 0:
@@ -102,6 +103,7 @@ class XTermBuffer(Buffer, XTerm):
                 if ifd:
                     data = os.read(ifd[0], 1024)
                     self.term_receive(data)
+                    self.application.need_draw = True
                 if ofd:
                     self._lock.acquire()
                     n = os.write(ofd[0], self._towrite)

completer.py

@@ -1,4 +1,4 @@
-import glob, os, pwd, sets
+import glob, os, pwd
 import method, util
 
 def find_common_string(candidates):
@@ -78,7 +78,7 @@ class CommandCompleter(Completer):
     def get_candidates(self, s, w=None):
         path = os.getenv('PATH')
         path_dirs = path.split(':')
-        candidates = sets.Set()
+        candidates = set()
         for d in path_dirs:
             if (not os.path.isdir(d) or not os.access(d, os.R_OK)):
                 continue

method/__init__.py

@@ -1,4 +1,4 @@
-import os, commands, re, sets, tempfile
+import os, commands, re, tempfile
 from subprocess import Popen, PIPE, STDOUT
 
 import buffer, default, dirutil, regex, util, window
@@ -216,7 +216,9 @@ class KillRegion(Method):
 class Copy(Method):
     '''Copy the contents of the current line'''
     def _execute(self, w, **vargs):
-        w.copy_line()
+        result = w.copy_line()
+        if result is None:
+            w.set_error("Empty kill region")
 class CopyRegion(Method):
     '''Copy the region between the mark and the cursor'''
     def _execute(self, w, **vargs):
@@ -1017,23 +1019,3 @@ class SetModeTabWidth(Method):
             return
         app.modes[mode].tabwidth = vargs['width']
         w.set_error('Default tab width set to %d' % app.modes[mode].tabwidth)
-
-#class HideRange(Method):
-#    def _execute(self, w, **vargs):
-#        cursor = w.logical_cursor()
-#        if cursor.y < w.mark.y:
-#            y1, y2 = cursor.y, w.mark.y
-#        elif w.mark.y < cursor.y:
-#            y1, y2 = w.mark.y, cursor.y
-#        else:
-#            w.set_error("No line range selected")
-#        w.hide(y1, y2)
-#        w.set_error("Lines %d through %d hidden" % (y1, y2))
-#class UnhideLine(Method):
-#    def _execute(self, w, **vargs):
-#        cursor = w.logical_cursor()
-#        if w.ishidden(cursor.y):
-#            w.unhide(cursor.y)
-#            w.set_error("Line %d is no longer hidden" % cursor.y)
-#        else:
-#            w.set_error("Line %d is not hidden" % cursor.y)

method/buffers.py

@@ -1,4 +1,4 @@
-import os, commands, re, sets, tempfile
+import os, commands, re, tempfile
 from subprocess import Popen, PIPE, STDOUT
 
 import buffer, default, dirutil, regex, util, window

method/cvs.py

@@ -1,4 +1,4 @@
-import os, commands, re, sets, tempfile
+import os, commands, re, tempfile
 from subprocess import Popen, PIPE, STDOUT
 
 import buffer, default, dirutil, lex, regex, util, window

method/help.py

@@ -1,4 +1,4 @@
-import os, commands, re, sets, tempfile
+import os, commands, re, tempfile
 from subprocess import Popen, PIPE, STDOUT
 
 import buffer, buffer.about

method/introspect.py

@@ -1,4 +1,4 @@
-import os, commands, re, sets, tempfile
+import os, commands, re, tempfile
 from subprocess import Popen, PIPE, STDOUT
 
 import buffer, buffer.console

method/move.py

@@ -1,4 +1,4 @@
-import os, commands, re, sets, tempfile
+import os, commands, re, tempfile
 from subprocess import Popen, PIPE, STDOUT
 
 import buffer, default, dirutil, regex, util, window

method/search.py

@@ -1,4 +1,4 @@
-import os, commands, re, sets, tempfile
+import os, commands, re, tempfile
 from subprocess import Popen, PIPE, STDOUT
 
 import buffer, default, dirutil, regex, util, window

method/shell.py

@@ -1,4 +1,4 @@
-import os, commands, re, sets, tempfile
+import os, commands, re, tempfile
 from subprocess import Popen, PIPE, STDOUT
 
 import buffer, default, dirutil, regex, term, util, window

method/svn.py

@@ -1,4 +1,4 @@
-import os, commands, re, sets, tempfile
+import os, commands, re, tempfile
 from subprocess import Popen, PIPE, STDOUT
 
 import buffer, default, dirutil, lex, regex, util, window

mode/__init__.py

@@ -1,4 +1,4 @@
-import math, os, sets, string
+import math, os, string
 import color, method
 from lex import Lexer
 from point import Point
@@ -88,6 +88,7 @@ class Fundamental(Handler):
     tabber       = None
     context      = None
     colors       = {}
+    word_letters = None
 
     # config settings installed/modified by the mode
     config  = {}
@@ -124,7 +125,7 @@ class Fundamental(Handler):
             for val2 in val:
                 app.config[key].append(val2)
         for (key, val) in cls.sconfig.iteritems():
-            app.config.setdefault(key, sets.Set())
+            app.config.setdefault(key, set())
             app.config[key].add(val)
         for (key, d) in cls.dconfig.iteritems():
             app.config.setdefault(key, {})
@@ -231,6 +232,10 @@ class Fundamental(Handler):
         self.add_bindings('insert-text2', ('C-c M-i',))
         self.add_bindings('insert-multiline-text', ('C-c m',))
 
+        # used for all word operations
+        if not self.word_letters:
+            self.word_letters = w.application.def_word_letters
+
         # create all the insert actions for the basic text input
         for c in string.letters + string.digits + string.punctuation:
             self.add_binding('insert-string-%s' % c, c)
@@ -259,8 +264,6 @@ class Fundamental(Handler):
         c, fg, bg = " ", "red", "default"
         if cont:
             c = "\\"
-        if w.hiddenindicator(y):
-            bg = "green"
         return [RenderString(s=c, attrs=color.build(fg, bg))]
     def get_lmargin(self, w, y, x, ended=False, cont=False):
         lm = self.lmargin
@@ -342,10 +345,10 @@ class Fundamental(Handler):
                 self.window.application.last_action = act.name
         except ActionError, e:
             #XYZ: HACK--should fix
-            if t not in ('C-]', 'C-g'):
+            if t in ('C-]', 'C-g'):
-                self.window.set_error(str(e))
-            else:
                 self.window.set_error('Cancelled')
+            else:
+                self.window.set_error(str(e))
         except Exception, e:
             if DEBUG:
                 raise

mode/brm.py

@@ -1,4 +1,4 @@
-import re, sets, string
+import re, string
 
 import color, method, minibuffer, mode, searchutil
 from point import Point

mode/elisp.py

@@ -1,4 +1,4 @@
-import commands, os.path, sets, string, sys, traceback
+import commands, os.path, string, sys, traceback
 import color, completer, default, mode, method, regex, tab
 from point import Point
 from lex import Grammar, PatternRule, RegionRule, OverridePatternRule

mode/erlang.py

@@ -1,4 +1,4 @@
-import commands, os.path, sets, string, sys, traceback
+import commands, os.path, string, sys, traceback
 import color, completer, default, mode, method, regex, tab
 from point import Point
 from lex import Grammar, PatternRule, RegionRule, OverridePatternRule, NocasePatternRule

mode/haskell.py

@@ -1,4 +1,4 @@
-import commands, os.path, sets, string, sys, traceback
+import commands, os.path, string, sys, traceback
 import color, completer, default, mode, method, regex, tab
 from point import Point
 from lex import Grammar, PatternRule, RegionRule, OverridePatternRule, NocasePatternRule

mode/lisp.py

@@ -1,4 +1,4 @@
-import commands, os.path, sets, string, sys, traceback
+import commands, os.path, string, sys, traceback
 import color, completer, default, mode, method, regex, tab
 from point import Point
 from lex import Grammar, PatternRule, RegionRule, OverridePatternRule

mode/ocaml.py

@@ -1,4 +1,4 @@
-import commands, os.path, sets, string, sys, traceback
+import commands, os.path, string, sys, traceback
 import color, completer, default, mode, method, regex, tab
 from point import Point
 from lex import Grammar, PatternRule, RegionRule, NocasePatternRule

mode/perl.py

@@ -1,4 +1,4 @@
-import os, re, sets, string, sys
+import os, re, string, sys
 import buffer, color, commands, completer, context, default, method, mode, regex, tab
 from point import Point
 from lex import Grammar, PatternRule, ContextPatternRule, RegionRule, \

mode/python.py

@@ -1,4 +1,4 @@
-import commands, os.path, sets, string, sys, traceback
+import commands, os.path, string, sys, traceback
 import color, completer, context, default, mode, method, regex, tab, method.introspect
 from point import Point
 from lex import Grammar, PatternRule, RegionRule, OverridePatternRule

mode/replace.py

@@ -1,4 +1,4 @@
-import re, sets, string
+import re, string
 
 import color, method, minibuffer, mode, searchutil
 from point import Point

mode/scheme.py

@@ -1,4 +1,4 @@
-import commands, os.path, sets, string, sys, traceback
+import commands, os.path, string, sys, traceback
 import color, completer, default, mode, method, regex, tab
 from point import Point
 from lex import Grammar, PatternRule, RegionRule, OverridePatternRule

mode/search.py

@@ -1,4 +1,4 @@
-import re, sets, string
+import re, string
 
 import color, method, minibuffer, mode, searchutil
 from point import Point

mode/shellmini.py

@@ -123,7 +123,7 @@ class OpenShell(Method):
         a = w.application
         if not a.has_buffer_name('*Shell*'):
             #b = buffer.pipe.PipeBuffer('/bin/bash', [], name="*Shell*", term='xterm')
-            b = buffer.emul.XTermBuffer('/bin/bash', [], name="*Shell*")
+            b = buffer.emul.XTermBuffer(a, '/bin/bash', [], name="*Shell*")
             a.add_buffer(b)
             window.Window(b, a)
         b = a.bufferlist.get_buffer_by_name('*Shell*')

window.py

@@ -3,8 +3,6 @@ import color, highlight, regex
 from point import Point
 from render import RenderString
 
-WORD_LETTERS = list(string.letters + string.digits)
-
 # note about the cursor: the cursor position will insert in front of the
 # character it highlights. to this end, it needs to be able to highlight behind
 # the last character on a line. thus, the x coordinate of the (logical) cursor
@@ -26,15 +24,12 @@ class Window(object):
         self.application  = a
         self.height       = height
         self.width        = width
-
         self.first        = Point(0, 0)
         self.last         = None
         self.cursor       = Point(0, 0)
         self.mark         = None
         self.active_point = None
         self.input_line   = ""
-        self.hidden_ranges = {}
-        self.hidden_lines  = {}
 
         if mode_name is not None:
             pass
@@ -311,14 +306,14 @@ class Window(object):
             x = len(self.buffer.lines[y])
         else:
             x -= 1
-        while (y, x) >= start and self.xy_char(x, y) not in WORD_LETTERS:
+        while (y, x) >= start and self.xy_char(x, y) not in self.mode.word_letters:
             if x == 0:
                 y -= 1
                 x = len(self.buffer.lines[y])
             else:
                 x -= 1
         found_word = False
-        while (y, x) >= start and self.xy_char(x, y) in WORD_LETTERS:
+        while (y, x) >= start and self.xy_char(x, y) in self.mode.word_letters:
             found_word = True
             if x == 0:
                 y -= 1
@@ -339,13 +334,13 @@ class Window(object):
         else:
             (x, y) = p.xy()
         end = self.buffer.get_buffer_end()
-        while (y, x) < end and self.xy_char(x, y) not in WORD_LETTERS:
+        while (y, x) < end and self.xy_char(x, y) not in self.mode.word_letters:
             if x == len(self.buffer.lines[y]):
                 x = 0
                 y += 1
             else:
                 x += 1
-        while (y, x) < end and self.xy_char(x, y) in WORD_LETTERS:
+        while (y, x) < end and self.xy_char(x, y) in self.mode.word_letters:
             if x == len(self.buffer.lines[y]):
                 x = 0
                 y += 1
@@ -360,27 +355,27 @@ class Window(object):
         p = self.find_right_word()
         if p is not None:
             self.goto(p)
-    def get_word_bounds_at_point(self, p, wl=WORD_LETTERS):
+    def get_word_bounds_at_point(self, p):
         if len(self.buffer.lines[p.y]) == 0:
             return None
         elif self.cursor_char() not in wl:
             return None
         x1 = x2 = p.x
-        while x1 > 0 and self.xy_char(x1 - 1, p.y) in wl:
+        while x1 > 0 and self.xy_char(x1 - 1, p.y) in self.mode.word_letters:
             x1 -= 1
         while x2 < len(self.buffer.lines[p.y]) and self.xy_char(x2, p.y) in wl:
             x2 += 1
         return (Point(x1, p.y), Point(x2, p.y))
-    def get_word_at_point(self, p, wl=WORD_LETTERS):
+    def get_word_at_point(self, p):
-        bounds = self.get_word_bounds_at_point(p, wl)
+        bounds = self.get_word_bounds_at_point(p)
         if bounds is None:
             return None
         else:
             return self.buffer.get_substring(bounds[0], bounds[1])
-    def get_word_bounds(self, wl=WORD_LETTERS):
+    def get_word_bounds(self):
-        return self.get_word_bounds_at_point(self.logical_cursor(), wl)
+        return self.get_word_bounds_at_point(self.logical_cursor())
-    def get_word(self, wl=WORD_LETTERS):
+    def get_word(self):
-        return self.get_word_at_point(self.logical_cursor(), wl)
+        return self.get_word_at_point(self.logical_cursor())
 
     # page up/down
     def _pshift_up(self, p, num):
@@ -496,69 +491,111 @@ class Window(object):
             self.set_mark_point(self.logical_cursor())
             self.goto(p)
 
-    # deletion
+    # finding (used by deletion, killing, and copying)
-    def left_delete(self):
+    def get_line(self):
-        self.buffer.left_delete(self.logical_cursor())
+        (x, y) = self.logical_cursor().xy()
-    def right_delete(self):
+        lines = self.buffer.lines
-        self.buffer.right_delete(self.logical_cursor())
+        if y < len(lines) - 1:
-    def delete(self, p1, p2):
+            return (Point(0, y), Point(0, y + 1))
-        self.buffer.delete(p1, p2)
+        elif y > 0:
-        
+            return (Point(len(lines[y - 1]), y - 1), Point(len(lines[y]), y))
-    # killing
+        else:
-    def kill_line(self):
+            return (None, None)
-        return self.copy_line(kill=True)
+    def get_line_left(self):
-    def kill_region(self):
+        cursor = self.logical_cursor()
-        return self.copy_region(kill=True)
+        (x, y) = cursor.xy()
-    def kill_left_word(self):
+        lines = self.buffer.lines
-        p1 = self.find_left_word()
+        if (x > 0) and not regex.whitespace.match(lines[y][:x]):
-        p2 = self.logical_cursor()
+            return (Point(0, y), cursor)
-        if p1 == p2:
+        elif y > 0:
-            return
+            return (Point(len(lines[y - 1]), y - 1), cursor)
-        return self.kill(p1, p2)
+        else:
-    def kill_right_word(self):
+            return (None, None)
-        p1 = self.logical_cursor()
+    def get_line_right(self):
-        p2 = self.find_right_word()
-        if p1 == p2:
-            return
-        return self.kill(p1, p2)
-    def copy_line(self, kill=False):
         cursor = self.logical_cursor()
         (x, y) = cursor.xy()
         lines = self.buffer.lines
         if (x < len(lines[y]) and not regex.whitespace.match(lines[y][x:])):
-            limit = Point(len(lines[y]), y)
+            return (cursor, Point(len(lines[y]), y))
         elif y < len(lines) - 1:
-            limit = Point(0, y + 1)
+            return (cursor, Point(0, y + 1))
         else:
-            return
+            return (None, None)
-        if kill:
+    def get_region(self):
-            return self.kill(cursor, limit)
-        else:
-            return self.copy(cursor, limit)
-    def copy_region(self, kill=False):
         cursor = self.logical_cursor()
+        p1, p2 = None, None
         if cursor < self.mark:
             p1 = cursor
             p2 = self.mark
         elif self.mark < cursor:
             p1 = self.mark
             p2 = cursor
+        return (p1, p2)
+    def get_left_word(self):
+        p1 = self.find_left_word()
+        p2 = self.logical_cursor()
+        if p1 == p2:
+            return (None, None)
         else:
-            self.input_line = "Empty kill region"
+            return (p1, p2)
-            return
+    def get_right_word(self):
-        if kill:
+        p1 = self.logical_cursor()
-            return self.kill(p1, p2)
+        p2 = self.find_right_word()
+        if p1 == p2:
+            return (None, None)
         else:
-            return self.copy(p1, p2)
+            return (p1, p2)
+
+    # deletion
+    def delete(self, p1, p2):
+        self.buffer.delete(p1, p2)
+    def delete_line(self):
+        (p1, p2) = self.get_line_right()
+        if p1 is not None: self.delete(p1, p2)
+    def delete_region(self):
+        (p1, p2) = self.get_region()
+        if p1 is not None: self.delete(p1, p2)
+    def delete_left_word(self):
+        (p1, p2) = self.get_left_word()
+        if p1 is not None: self.delete(p1, p2)
+    def delete_right_word(self):
+        (p1, p2) = self.get_right_word()
+        if p1 is not None: self.delete(p1, p2)
+    def left_delete(self):
+        self.buffer.left_delete(self.logical_cursor())
+    def right_delete(self):
+        self.buffer.right_delete(self.logical_cursor())
+        
+    # killing
     def kill(self, p1, p2):
         killed = self.buffer.get_substring(p1, p2)
         self.buffer.delete(p1, p2)
         self.application.push_kill(killed)
         return killed
+    def kill_line(self):
+        (p1, p2) = self.get_line_right()
+        if p1 is not None: self.kill(p1, p2)
+    def kill_region(self):
+        (p1, p2) = self.get_region()
+        if p1 is not None: self.kill(p1, p2)
+    def kill_left_word(self):
+        (p1, p2) = self.get_left_word()
+        if p1 is not None: self.kill(p1, p2)
+    def kill_right_word(self):
+        (p1, p2) = self.get_right_word()
+        if p1 is not None: self.kill(p1, p2)
+
+    # copying
     def copy(self, p1, p2):
         copied = self.buffer.get_substring(p1, p2)
         self.application.push_kill(copied)
         return copied
+    def copy_line(self):
+        (p1, p2) = self.get_line_right()
+        if p1 is not None: return self.copy(p1, p2)
+    def copy_region(self, kill=False):
+        (p1, p2) = self.get_region()
+        if p1 is not None: return self.copy(p1, p2)
 
     # overwriting
     def overwrite_char_at_cursor(self, c):
@@ -610,31 +647,6 @@ class Window(object):
         else:
             return self.buffer.lines[y][x]
 
-    # hiding stuff
-    def hide(self, y1, y2):
-        if y2 == 0:
-            return
-        for (py1, py2) in self.hidden_ranges.itervalues():
-            if ((y1 >= py1 and y1 < py2) or
-                (y2 >= py1 and y2 < py2) or
-                (y1 <= py1 and y2 >= py2)):
-                return
-        for i in range(y1, y2):
-            self.hidden_lines[i] = y2
-        self.hidden_ranges[y2] = (y1, y2)
-    def ishidden(self, y):
-        return self.hidden_lines.setdefault(y, False)
-    def hiddenindicator(self, y):
-        return y in self.hidden_ranges
-    def unhide(self, y):
-        py2 = self.ishidden(y)
-        if not py2:
-            return
-        py1 = self.hidden_ranges[py2][0]
-        del self.hidden_ranges[py2]
-        for i in range(py1, py2):
-            self.hidden_lines[i] = False
-
     # undo/redo
     def undo(self):
         p = self.buffer.undo()