xactions.py

# TODO: weird name to avoid init issues with state.py::State.
import sublime
import sublime_plugin

import re
import logging

from Vintageous import local_logger
from Vintageous.state import _init_vintageous
from Vintageous.state import State
from Vintageous.vi import inputs
from Vintageous.vi import motions
from Vintageous.vi import utils
from Vintageous.vi.cmd_defs import cmd_defs
from Vintageous.vi.cmd_defs import cmd_types
from Vintageous.vi.cmd_defs import cmds
from Vintageous.vi.constants import regions_transformer_reversed
from Vintageous.vi.core import ViTextCommandBase
from Vintageous.vi.core import ViWindowCommandBase
from Vintageous.vi.keys import mappings
from Vintageous.vi.keys import KeySequenceTokenizer
from Vintageous.vi.keys import to_bare_command_name
from Vintageous.vi.keys import user_mappings
from Vintageous.vi.mappings import Mappings
from Vintageous.vi.utils import gluing_undo_groups
from Vintageous.vi.utils import IrreversibleTextCommand
from Vintageous.vi.utils import is_view
from Vintageous.vi.utils import jump_directions
from Vintageous.vi.utils import modes
from Vintageous.vi.utils import regions_transformer

_logger = local_logger(__name__)


class _vi_g_big_u(ViTextCommandBase):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

    def run(self, edit, mode=None, count=1, motion=None):
        def f(view, s):
            view.replace(edit, s, view.substr(s).upper())
            # reverse the resulting region so that _enter_normal_mode collapses the
            # selection as we want it.
            return sublime.Region(s.b, s.a)

        if mode != modes.INTERNAL_NORMAL:
            raise ValueError('bad mode: ' + mode)

        if motion is None:
            raise ValueError('motion data required')

        self.save_sel()

        self.view.run_command(motion['motion'], motion['motion_args'])

        if self.has_sel_changed():
            regions_transformer(self.view, f)
        else:
            utils.blink()

        self.enter_normal_mode(mode)


class _vi_gu(ViTextCommandBase):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

    def run(self, edit, mode=None, count=1, motion=None):
        def f(view, s):
            view.replace(edit, s, view.substr(s).lower())
            # reverse the resulting region so that _enter_normal_mode collapses the
            # selection as we want it.
            return sublime.Region(s.b, s.a)

        if mode != modes.INTERNAL_NORMAL:
            raise ValueError('bad mode: ' + mode)

        if motion is None:
            raise ValueError('motion data required')

        self.save_sel()

        self.view.run_command(motion['motion'], motion['motion_args'])

        if self.has_sel_changed():
            regions_transformer(self.view, f)
        else:
            utils.blink()

        self.enter_normal_mode(mode)


class _vi_gq(ViTextCommandBase):
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)

    def run(self, edit, mode=None, count=1, motion=None):
        def f(view, s):
            return sublime.Region(s.begin(), s.end())
            # reverse the resulting region so that _enter_normal_mode foo bar foo
            # collapses the selection as we want it.

        if mode != modes.INTERNAL_NORMAL:
            raise ValueError('bad mode: ' + mode)

        if motion is None:
            raise ValueError('motion data required')

        self.save_sel()

        self.view.run_command(motion['motion'], motion['motion_args'])

        if self.has_sel_changed():
            self.save_sel()
            self.view.run_command('wrap_lines')
            self.view.sel().clear()
            self.view.sel().add_all(self.old_sel)
        else:
            utils.blink()

        self.enter_normal_mode(mode)


class _vi_u(IrreversibleTextCommand):
    def run(self, count=1):
        for i in range(count):
            self.view.run_command('undo')

        if self.view.has_non_empty_selection_region():
            def reverse(view, s):
                return sublime.Region(s.end(), s.begin())

            # TODO: xpos is misaligned after this.
            regions_transformer(self.view, reverse)
            self.view.window().run_command('_enter_normal_mode', {'mode': modes.VISUAL})


class _vi_ctrl_r(IrreversibleTextCommand):
    def run(self, count=1, mode=None):
        for i in range(count):
            self.view.run_command('redo')


class _vi_a(sublime_plugin.TextCommand):
    def run(self, edit, count=1, mode=None):
        def f(view, s):
            if mode == modes.INTERNAL_NORMAL:
                return sublime.Region(s.b + 1)
            if mode == modes.VISUAL:
                return sublime.Region(s.b)
            return s

        if mode is None:
            raise ValueError('mode required')

        regions_transformer(self.view, f)
        self.view.window().run_command('_enter_insert_mode')


class _vi_c(ViTextCommandBase):
    def run(self, edit, count=1, mode=None, motion=None):
        if mode is None:
            raise ValueError('mode required')

        if mode == modes.INTERNAL_NORMAL and motion is None:
            raise ValueError('motion required')

        if mode == modes.INTERNAL_NORMAL and motion['motion'] == '_vi_w':
            motion['motion'] = '_vi_e'

        self.save_sel()

        if motion:
            self.view.run_command(motion['motion'], motion['motion_args'])

            if not self.has_sel_changed():
                self.enter_insert_mode(mode)
                return

        self.view.run_command('right_delete')

        self.enter_insert_mode(mode)


class _enter_normal_mode(ViTextCommandBase):
    """
    The equivalent of pressing the Esc key in Vim.

    @mode
      The mode we're coming from, which should still be the current mode.

    @from_init
      Whether _enter_normal_mode has been called from _init_vintageous. This
      is important to know in order to not hide output panels when the user
      is only navigating files or clicking around, not pressing Esc.
    """
    def run(self, edit, mode=None, from_init=False):
        state = self.state

        self.view.window().run_command('hide_auto_complete')
        self.view.window().run_command('hide_overlay')

        if ((not from_init and (mode == modes.NORMAL) and not state.sequence) or
             not is_view(self.view)):
            # When _enter_normal_mode is requested from _init_vintageous, we
            # should not hide output panels; hide them only if the user
            # pressed Esc and we're not cancelling partial state data, or if a
            # panel has the focus.
            # XXX: We are assuming that state.sequence will always be empty
            #      when we do the check above. Is that so?
            # XXX: The 'not is_view(self.view)' check above seems to be
            #      redundant, since those views should be ignored by
            #      Vintageous altogether.
            self.view.window().run_command('hide_panel', {'cancel': True})

        self.view.settings().set('command_mode', True)
        self.view.settings().set('inverse_caret_state', True)

        # Exit replace mode.
        self.view.set_overwrite_status(False)

        state.enter_normal_mode()
        # XXX: st bug? if we don't do this, selections won't be redrawn
        self.view.run_command('_enter_normal_mode_impl', {'mode': mode})

        if state.glue_until_normal_mode and not state.gluing_sequence:
            if self.view.is_dirty():
                self.view.window().run_command('glue_marked_undo_groups')
                # We're exiting from insert mode or replace mode. Capture
                # the last native command as repeat data.
                state.repeat_data = ('native', self.view.command_history(0)[:2], mode, None)
            else:
                self.view.window().run_command('unmark_undo_groups_for_gluing')
            state.glue_until_normal_mode = False

        if mode == modes.INSERT and int(state.normal_insert_count) > 1:
            # TODO: Calculate size the view has grown by and place the caret
            # after the newly inserted text.
            sels = list(self.view.sel())
            times = int(state.normal_insert_count) - 1
            state.normal_insert_count = '1'
            self.view.window().run_command('_vi_dot', {
                                'count': times,
                                'mode': mode,
                                'repeat_data': state.repeat_data,
                                })
            self.view.sel().clear()
            self.view.sel().add_all(sels)
        state.xpos = self.view.rowcol(self.view.sel()[0].b)[1]
        sublime.status_message('')
class _enter_normal_mode_impl(sublime_plugin.TextCommand):
    def run(self, edit, mode=None):
        def f(view, s):
            _logger().info('[_enter_normal_mode_impl] entering normal mode from {0}'.format(mode))
            if mode == modes.INSERT:
                if view.line(s.b).a != s.b:
                    return sublime.Region(s.b - 1)

                return sublime.Region(s.b)

            if mode == modes.INTERNAL_NORMAL:
                return sublime.Region(s.b)

            if mode == modes.VISUAL:
                # save selections for gv
                # But only if there are non-empty sels. We might be in visual mode and not have
                # non-empty sels because we've just existed from an action.
                if self.view.has_non_empty_selection_region():
                    self.view.add_regions('visual_sel', list(self.view.sel()))
                if s.a < s.b:
                    r =  sublime.Region(s.b - 1)
                    if view.substr(r.b) == '\n':
                        r.b -= 1
                    return sublime.Region(r.b)
                return sublime.Region(s.b)

            if mode in (modes.VISUAL_LINE, modes.VISUAL_BLOCK):
                # save selections for gv
                # But only if there are non-empty sels. We might be in visual mode and not have
                # non-empty sels because we've just existed from an action.
                if self.view.has_non_empty_selection_region():
                    self.view.add_regions('visual_sel', list(self.view.sel()))

                if s.a < s.b:
                    pt = s.b - 1
                    if (view.substr(pt) == '\n') and not view.line(pt).empty():
                        pt -= 1
                    return sublime.Region(pt)
                else:
                    return sublime.Region(s.b)

            if mode == modes.SELECT:
                return sublime.Region(s.begin())

            return sublime.Region(s.b)

        if mode == modes.UNKNOWN:
            return
        if len(self.view.sel()) > 1 and mode == modes.NORMAL:
            sel = self.view.sel()[0]
            self.view.sel().clear()
            self.view.sel().add(sel)

        regions_transformer(self.view, f)

        self.view.erase_regions('vi_search')
        self.view.run_command('_vi_adjust_carets', {'mode': mode})


class _enter_select_mode(ViWindowCommandBase):
    def run(self, mode=None, count=1):
        self.state.enter_select_mode()

        view = self.window.active_view()

        # If there are no visual selections, do some work work for the user.
        if not view.has_non_empty_selection_region():
            self.window.run_command('find_under_expand')

        state = State(view)
        state.display_status()

class _select_search_results(ViWindowCommandBase):
    def run(self, mode=None, count=1):
        self.state.enter_select_mode()

        view = self.window.active_view()

        view.sel().add_all(view.get_regions('vi_search'))

        state = State(view)
        state.display_status()


class _enter_insert_mode(ViTextCommandBase):
    def run(self, edit, mode=None, count=1):
        self.view.settings().set('inverse_caret_state', False)
        self.view.settings().set('command_mode', False)

        self.state.enter_insert_mode()
        self.state.normal_insert_count = str(count)
        self.state.display_status()


class _enter_visual_mode(ViTextCommandBase):
    def run(self, edit, mode=None):

        state = self.state
        if state.mode == modes.VISUAL:
            self.view.run_command('_enter_normal_mode', {'mode': mode})
            return
        self.view.run_command('_enter_visual_mode_impl', {'mode': mode})
        state.enter_visual_mode()
        state.display_status()


class _enter_visual_mode_impl(sublime_plugin.TextCommand):
    """
    Transforms the view's selections. We don't do this inside the EnterVisualMode
    window command because ST seems to neglect to repaint the selections. (bug?)
    """
    def run(self, edit, mode=None):
        def f(view, s):
            if mode == modes.VISUAL_LINE:
                return sublime.Region(s.a, s.b)
            else:
                return sublime.Region(s.b, s.b + 1)

        regions_transformer(self.view, f)


class _enter_visual_line_mode(ViTextCommandBase):
    def run(self, edit, mode=None):

        state = self.state
        if state.mode == modes.VISUAL_LINE:
            self.view.run_command('_enter_normal_mode', {'mode': mode})
            return
        self.view.run_command('_enter_visual_line_mode_impl', {'mode': mode})
        state.enter_visual_line_mode()
        state.display_status()
class _enter_visual_line_mode_impl(sublime_plugin.TextCommand):
    """
    Transforms the view's selections.
    """
    def run(self, edit, mode=None):
        def f(view, s):
            if mode == modes.VISUAL:
                if s.a < s.b:
                    if view.substr(s.b - 1) != '\n':
                        return sublime.Region(view.line(s.a).a,
                                              view.full_line(s.b - 1).b)
                    else:
                        return sublime.Region(view.line(s.a).a, s.b)
                else:
                    if view.substr(s.a - 1 ) != '\n':
                        return sublime.Region(view.full_line(s.a - 1).b,
                                              view.line(s.b).a)
                    else:
                        return sublime.Region(s.a, view.line(s.b).a)
            else:
                return view.full_line(s.b)

        regions_transformer(self.view, f)


class _enter_replace_mode(ViTextCommandBase):
    def run(self, edit):
        def f(view, s):
            return sublime.Region(s.b)

        state = self.state
        state.settings.view['command_mode'] = False
        state.settings.view['inverse_caret_state'] = False
        state.view.set_overwrite_status(True)
        state.enter_replace_mode()
        regions_transformer(self.view, f)
        state.display_status()
        state.reset()


# TODO: Remove this command once we don't need it any longer.
class ToggleMode(ViWindowCommandBase):
    def run(self):
        value = self.window.active_view().settings().get('command_mode')
        self.window.active_view().settings().set('command_mode', not value)
        self.window.active_view().settings().set('inverse_caret_state', not value)
        print("command_mode status:", not value)

        state = self.state
        if not self.window.active_view().settings().get('command_mode'):
            state.mode = modes.INSERT
        sublime.status_message('command mode status: %s' % (not value))


class PressKeys(ViWindowCommandBase):
    """
    Runs sequences of keys representing Vim commands.

    For example: fngU5l

    @keys
        Key sequence to be run.
    @repeat_count
        Count to be applied when repeating through the '.' command.
    """
    def run(self, keys, repeat_count=None, check_user_mappings=True):
        # First, run any leading motions coming before the first action. We
        # don't keep these in the undo stack, but they will still be repeated
        # via '.'. This ensures that undoing will leave the caret where the
        # sequence's first editing action started. For example, lldl would
        # skip ll in the undo history, but store the full sequence for '.' to
        # use.
        state = self.state
        initial_mode = state.mode

        _logger().info("[PressKeys] seq received: {0} mode: {1}".format(keys, state.mode))

        # Disable interactive prompts. For example, to supress interactive
        # input collection in /foo<CR>.
        state.non_interactive = True
        leading_motions = ''
        for key in KeySequenceTokenizer(keys).iter_tokenize():
            self.window.run_command('press_key', {'key': key,
                                                  'do_eval': False,
                                                  'repeat_count': repeat_count,
                                                  'check_user_mappings': check_user_mappings})
            if state.action:
                _logger().info('[PressKeys] first action found, no more leading motions in {0}'.format(state.sequence))
                # The last key press has caused an action to be primed. That
                # means there are no (more) leading motions. Break out of
                # here.
                state.reset_command_data()
                break

            elif state.runnable():
                leading_motions += state.sequence
                state.eval()
                state.reset_command_data()

            elif state.input_parsers:
                pass
                # leading_motions += key

            else:
                state.eval()

        # Strip the already run commands.
        if leading_motions:
            if (len(leading_motions) == len(keys)) and (not state.input_parsers):
                return
            _logger().info('[PressKeys] original seq: {0}'.format(keys))
            _logger().info('[PressKeys] leading motions seq: {0}'.format(leading_motions))
            keys = keys[len(leading_motions):]
            _logger().info('[PressKeys] seq stripped to {0}'.format(keys))

        if not (state.motion and not state.action):
            with gluing_undo_groups(self.window.active_view(), state):
                try:
                    for key in KeySequenceTokenizer(keys).iter_tokenize():
                        if key.lower() == '<esc>':
                            self.window.run_command('_enter_normal_mode')
                            continue

                        elif state.mode not in (modes.INSERT, modes.REPLACE):
                            self.window.run_command('press_key', {'key': key,
                                                                  'repeat_count': repeat_count,
                                                                  'check_user_mappings': check_user_mappings})
                        else:
                            self.window.active_view().run_command('insert',
                                                                  {'characters': key})
                    if not state.input_parsers:
                        return
                finally:
                    state.non_interactive = False
                    # Ensure we set the full command for '.' to use, but don't
                    # store '.' alone.
                    if (leading_motions + keys) not in ('.', 'u', '<ctrl+r>'):
                            state.repeat_data = ('vi', leading_motions + keys, initial_mode, None)

        # We'll reach this point if we have a command that requests input
        # whose input parser isn't satistied. For example, `/foo`. Note that
        # `/foo<CR>`, on the contrary, would have satisfied the parser.
        #
        # Assume that:
        #   * a command `_ + parser_name` exists that accepts a 'default'
        #     parameter. This command should be the panel that would have run
        #     in interactive mode to collect data from the user.
        #
        #   * the motion is the one receiving data.
        #
        _logger().info('[PressKeys] unsatisfied parser: {0} {1}'.format(state.action, state.motion))
        if state.action and state.motion:
            # we have a parser an a motion that can collect data. Collect data interactively.
            motion_func = getattr(motions, state.motion['name'], None)
            if motion_func is None:
                utils.blink()
                state.reset_command_data()
                return
            motion_data = motion_func(state)
            motion_data['motion_args']['default'] = state.user_input
            self.window.run_command(motion_data['motion'], motion_data['motion_args'])
            return
        try:
            parser_def = inputs.get(state, state.input_parsers[-1])
            _logger().info('[PressKeys] last attemp to collect input: {0}'.format(parser_def.command))
            self.window.run_command(parser_def.command, {'default': state.user_input})
        except IndexError:
            _logger().info('[Vintageous] parser unsatisfied command not found')
            utils.blink()
        finally:
            state.non_interactive = False


class PressKey(ViWindowCommandBase):
    """
    Core command. It interacts with the global state each time a key is
    pressed.

    @key
        Key pressed.
    @repeat_count
        count to be used when repeating through the '.' command.
    @do_eval
        whether to evaluate the global state when it's in a runnable
        state. Most of the time, the default value of `True` should be
        used. Set to `False` when you want to manually control
        the global state's evaluation. For example, this is what the
        PressKeys command does.
    """
    def run(self, key, repeat_count=None, do_eval=True, check_user_mappings=True):
        _logger().info("[PressKey] pressed: {0}".format(key))

        state = self.state

        # If the user has made selections with the mouse, we may be in an
        # inconsistent state. Try to remedy that.
        if (state.view.has_non_empty_selection_region() and
            state.mode not in (modes.VISUAL,
                               modes.VISUAL_LINE,
                               modes.VISUAL_BLOCK,
                               modes.SELECT)):
                _init_vintageous(state.view)


        if key.lower() == '<esc>':
            self.window.run_command('_enter_normal_mode', {'mode': state.mode})
            state.reset_command_data()
            return

        state.sequence += key
        if not state.recording_macro:
            state.display_status()
            # sublime.status_message(state.sequence)
        else:
            sublime.status_message('[Vintageous] Recording')
        if state.capture_register:
            state.register = key
            state.partial_sequence = ''
            return

        # if capturing input, we shall not pass this point
        if state.input_parsers:
            if state.process_user_input(key):
                if state.runnable():
                    _logger().info('[PressKey] state holds complete command: {0} motion: {1} user input: {2}'.format(state.action,
                                                                                                 state.motion,
                                                                                                 state.user_input))
                    if do_eval:
                        _logger().info('[PressKey] evaluating complete command')
                        state.eval()
                        state.reset_command_data()
                return

        if repeat_count:
            state.action_count = str(repeat_count)

        if self.handle_counts(key, repeat_count):
            return

        state.partial_sequence += key
        _logger().info("[PressKey] sequence {0}".format(state.sequence))
        _logger().info("[PressKey] partial sequence {0}".format(state.partial_sequence))

        # key_mappings = KeyMappings(self.window.active_view())
        key_mappings = Mappings(state)
        if check_user_mappings and key_mappings.incomplete_user_mapping():
            _logger().info("[PressKey] incomplete user mapping: {0}".format(state.partial_sequence))
            # for example, we may have typed 'aa' and there's an 'aaa' mapping.
            # we need to keep collecting input.
            return

        _logger().info('[PressKey] getting cmd for seq/partial seq: {0} / {1}'.format(state.sequence, state.partial_sequence))
        command = key_mappings.get_current(check_user_mappings=check_user_mappings)

        if command['name'] == cmds.OPEN_REGISTERS:
            _logger().info('[PressKey] requesting register name')
            state.capture_register = True
            return

        # XXX: This doesn't seem to be correct. If we are in OPERATOR_PENDING mode, we should
        # most probably not have to wipe the state.
        if command['type'] == cmd_types.USER:
            if do_eval:
                new_keys = command['name']
                if state.mode == modes.OPERATOR_PENDING:
                    command_name = command['name']
                    new_keys = state.sequence[:-len(state.partial_sequence)] + command['name']
                state.reset_command_data()
                _logger().info('[PressKey] running user mapping {0} via press_keys'.format(new_keys))
                self.window.run_command('press_keys', {'keys': new_keys, 'check_user_mappings': False})
            return

        if command['name'] == cmds.OPEN_NAME_SPACE:
            # Keep collecing input to complete the sequence. For example, we
            # may have typed 'g'.
            _logger().info("[PressKey] opening namespace: {0}".format(state.partial_sequence))
            return

        elif command['name'] == cmds.MISSING:
            actual_seq = to_bare_command_name(state.sequence)

            if state.mode == modes.OPERATOR_PENDING:
                # We might be looking at a command like 'dd'. The first 'd' is
                # mapped for normal mode, but the second is missing in
                # operator pending mode, so we get a missing command. Try to
                # build the full command now.
                command = key_mappings.get_current(sequence=actual_seq,
                                                   mode=modes.NORMAL)
            else:
                command = key_mappings.get_current(sequence=actual_seq)

            if command['name'] == cmds.MISSING:
                _logger().info('[PressKey] unmapped sequence: {0}'.format(state.sequence))
                utils.blink()
                state.reset_command_data()
                return

        if (state.mode == modes.OPERATOR_PENDING and
            command['type'] == cmd_types.ACTION):
                # TODO: This may be unreachable code by now. ?????????????????
                # we're expecting a motion, but we could still get an action.
                # For example, dd, g~g~ or g~~
                # remove counts
                action_seq = to_bare_command_name(state.sequence)
                _logger().info('[PressKey] action seq: {0}'.format(action_seq))
                command = key_mappings.get_current(sequence=action_seq, mode=modes.NORMAL)
                if command['name'] == cmds.MISSING:
                    _logger().info("[PressKey] unmapped sequence: {0}".format(state.sequence))
                    state.reset_command_data()
                    return

                if not command['motion_required']:
                    state.mode = modes.NORMAL

        state.set_command(command)

        _logger().info("[PressKey] '{0}'' mapped to '{1}'".format(state.partial_sequence, command))

        if state.mode == modes.OPERATOR_PENDING:
            state.reset_partial_sequence()

        if do_eval:
            state.eval()

    def handle_counts(self, key, repeat_count):
        """
        Returns `True` if the processing of the current key needs to stop.
        """
        state = State(self.window.active_view())
        if not state.action and key.isdigit():
            if not repeat_count and (key != '0' or state.action_count) :
                _logger().info('[PressKey] action count digit: {0}'.format(key))
                state.action_count += key
                return True

        if (state.action and (state.mode == modes.OPERATOR_PENDING) and
            key.isdigit()):
                if not repeat_count and (key != '0' or state.motion_count):
                    _logger().info('[PressKey] motion count digit: {0}'.format(key))
                    state.motion_count += key
                    return True


class _vi_dot(ViWindowCommandBase):
    def run(self, mode=None, count=None, repeat_data=None):
        state = self.state
        state.reset_command_data()
        if state.mode == modes.INTERNAL_NORMAL:
            state.mode = modes.NORMAL

        if repeat_data is None:
            _logger().info('[_vi_dot] nothing to repeat')
            return

        # TODO: Find out if the user actually meant '1'.
        if count and count == 1:
            count = None

        type_, seq_or_cmd, old_mode, visual_data = repeat_data
        _logger().info('[_vi_dot] type: {0} seq or cmd: {1} old mode: {2}'.format(type_, seq_or_cmd, old_mode))

        if visual_data and (mode != modes.VISUAL):
            s0 = state.view.sel()[0]
            if (visual_data[0] > 0):
                end = state.view.text_point(
                                state.view.rowcol(s0.b)[0] + visual_data[0],
                                visual_data[1])
            else:
                end = s0.b + visual_data[1]
            state.view.sel().add(sublime.Region(s0.b, end))
            state.mode = modes.VISUAL
        elif not visual_data and (mode == modes.VISUAL):
            # Can't repeat normal mode commands in visual mode.
            utils.blink()
            return
        elif mode not in (modes.VISUAL, modes.VISUAL_LINE, modes.NORMAL,
                          modes.INTERNAL_NORMAL, modes.INSERT):
            utils.blink()
            return

        if type_ == 'vi':
            self.window.run_command('press_keys', {'keys': seq_or_cmd,
                                                   'repeat_count': count})
        elif type_ == 'native':
            sels = list(self.window.active_view().sel())
            # FIXME: We're not repeating as we should. It's the motion that
            # should receive this count.
            for i in range(count or 1):
                self.window.run_command(*seq_or_cmd)
            # FIXME: What happens in visual mode?
            self.window.active_view().sel().clear()
            self.window.active_view().sel().add_all(sels)
        else:
            raise ValueError('bad repeat data')

        self.window.run_command('_enter_normal_mode', {'mode': mode})
        state.repeat_data = repeat_data


class _vi_dd_action(ViTextCommandBase):

    _can_yank = True
    _synthetize_new_line_at_eof = True
    _yanks_linewise = False
    _populates_small_delete_register = False

    def run(self, edit, mode=None, count=1):
        def f(view, s):
            # We've made a selection with _vi_cc_motion just before this.
            if mode == modes.INTERNAL_NORMAL:
                view.erase(edit, s)
                if utils.row_at(self.view, s.a) != utils.row_at(self.view, self.view.size()):
                    pt = utils.next_non_white_space_char(view, s.a, white_space=' \t')
                else:
                    pt = utils.next_non_white_space_char(view,
                                                         self.view.line(s.a).a,
                                                         white_space=' \t')

                return sublime.Region(pt, pt)
            return s

        self.view.run_command('_vi_dd_motion', {'mode': mode, 'count': count})

        state = self.state
        state.registers.yank(self)

        row = [self.view.rowcol(s.begin())[0] for s in self.view.sel()][0]
        regions_transformer_reversed(self.view, f)
        self.view.sel().clear()
        self.view.sel().add(sublime.Region(self.view.text_point(row, 0)))


class _vi_dd_motion(sublime_plugin.TextCommand):
    def run(self, edit, mode=None, count=1):
        def f(view, s):
            if mode == modes.INTERNAL_NORMAL:
                end = view.text_point(utils.row_at(self.view, s.b) + (count - 1), 0)
                begin = view.line(s.b).a
                if ((utils.row_at(self.view, end) == utils.row_at(self.view, view.size())) and
                    (view.substr(begin - 1) == '\n')):
                        begin -= 1

                return sublime.Region(begin, view.full_line(end).b)

            return s

        regions_transformer(self.view, f)


class _vi_cc_motion(ViTextCommandBase):
    def run(self, edit, mode=None, count=1):
        def f(view, s):
            if mode == modes.INTERNAL_NORMAL:
                end = view.text_point(utils.row_at(self.view, s.b) + (count - 1), 0)
                begin = view.line(s.b).a
                begin = utils.next_non_white_space_char(view, begin, white_space=' \t')
                return sublime.Region(begin, view.line(end).b)

            return s

        regions_transformer(self.view, f)


class _vi_cc_action(ViTextCommandBase):

    _can_yank = True
    _synthetize_new_line_at_eof = True
    _yanks_linewise = False
    _populates_small_delete_register = False

    def run(self, edit, mode=None, count=1):
        self.view.run_command('_vi_cc_motion', {'mode': mode, 'count': count})

        state = self.state
        state.registers.yank(self)

        self.view.run_command('right_delete')

        self.enter_insert_mode(mode)
        self.set_xpos(state)


class _vi_visual_o(sublime_plugin.TextCommand):
    def run(self, edit, mode=None, count=1):
        def f(view, s):
            # FIXME: In Vim, o doesn't work in modes.VISUAL_LINE, but ST can't move the caret while
            # in modes.VISUAL_LINE, so we enable this for convenience. Change when/if ST can move
            # the caret while in modes.VISUAL_LINE.
            if mode in (modes.VISUAL, modes.VISUAL_LINE):
                return sublime.Region(s.b, s.a)
            return s

        regions_transformer(self.view, f)
        self.view.show(self.view.sel()[0].b, False)


class _vi_yy(ViTextCommandBase):

    _can_yank = True
    _synthetize_new_line_at_eof = True

    def run(self, edit, mode=None, count=1, register=None):
        def select(view, s):
            if count > 1:
                row, col = self.view.rowcol(s.b)
                end = view.text_point(row + count - 1, 0)
                return sublime.Region(view.line(s.a).a, view.full_line(end).b)

            return view.full_line(s.b)

        def restore():
            self.view.sel().clear()
            self.view.sel().add_all(list(self.old_sel))

        if mode != modes.INTERNAL_NORMAL:
            utils.blink()
            raise ValueError('wrong mode')

        self.save_sel()
        regions_transformer(self.view, select)

        state = self.state
        self.outline_target()
        state.registers.yank(self, register)
        restore()
        self.enter_normal_mode(mode)


class _vi_y(ViTextCommandBase):

    _can_yank = True
    _populates_small_delete_register = True

    def run(self, edit, mode=None, count=1, motion=None, register=None):
        def f(view, s):
            return sublime.Region(s.end(), s.begin())

        if mode == modes.INTERNAL_NORMAL:
            if motion is None:
                raise ValueError('bad args')
            self.view.run_command(motion['motion'], motion['motion_args'])
            self.outline_target()

        elif mode not in (modes.VISUAL, modes.VISUAL_LINE, modes.VISUAL_BLOCK):
            return

        state = self.state
        state.registers.yank(self, register)
        regions_transformer(self.view, f)
        self.enter_normal_mode(mode)


class _vi_d(ViTextCommandBase):

    _can_yank = True
    _populates_small_delete_register = True

    def run(self, edit, mode=None, count=1, motion=None, register=None):
        def reverse(view, s):
            return sublime.Region(s.end(), s.begin())

        if mode not in (modes.INTERNAL_NORMAL, modes.VISUAL,
                        modes.VISUAL_LINE):
            raise ValueError('wrong mode')

        if mode == modes.INTERNAL_NORMAL and not motion:
            raise ValueError('missing motion')

        if motion:
            self.save_sel()

            self.view.run_command(motion['motion'], motion['motion_args'])

            # The motion has failed, so abort.
            if not self.has_sel_changed():
                utils.blink()
                self.enter_normal_mode(mode)
                return

        state = self.state
        state.registers.yank(self, register)

        self.view.run_command('left_delete')
        self.view.run_command('_vi_adjust_carets')

        self.enter_normal_mode(mode)


class _vi_big_a(ViTextCommandBase):
    def run(self, edit, mode=None, count=1):
        def f(view, s):
            if mode == modes.VISUAL_BLOCK:
                if self.view.substr(s.b - 1) == '\n':
                    return sublime.Region(s.end() - 1)
                return sublime.Region(s.end())

            elif mode == modes.VISUAL:
                pt = s.b
                if self.view.substr(s.b - 1) == '\n':
                    pt -= 1
                if s.a > s.b:
                    pt = view.line(s.a).a
                return sublime.Region(pt)

            elif mode == modes.VISUAL_LINE:
                if s.a < s.b:
                    if s.b < view.size():
                        return sublime.Region(s.end() - 1)
                    return sublime.Region(s.end())
                return sublime.Region(s.begin())

            elif mode != modes.INTERNAL_NORMAL:
                return s

            hard_eol = self.view.line(s.b).end()
            return sublime.Region(hard_eol, hard_eol)

        if mode == modes.SELECT:
            self.view.window().run_command('find_all_under')
            return

        regions_transformer(self.view, f)

        self.enter_insert_mode(mode)


class _vi_big_i(ViTextCommandBase):
    def run(self, edit, count=1, mode=None):
        def f(view, s):
            if mode == modes.VISUAL_BLOCK:
                return sublime.Region(s.begin())
            elif mode == modes.VISUAL:
                pt = view.line(s.a).a
                if s.a > s.b:
                    pt = s.b
                return sublime.Region(pt)
            elif mode == modes.VISUAL_LINE:
                line = view.line(s.a)
                pt = utils.next_non_white_space_char(view, line.a)
                return sublime.Region(pt)
            elif mode != modes.INTERNAL_NORMAL:
                return s
            line = view.line(s.b)
            pt = utils.next_non_white_space_char(view, line.a)
            return sublime.Region(pt, pt)

        regions_transformer(self.view, f)

        self.enter_insert_mode(mode)


class _vi_m(ViTextCommandBase):
    def run(self, edit, mode=None, count=1, character=None):
        state = self.state
        state.marks.add(character, self.view)

        # TODO: What if we are in visual mode?
        self.enter_normal_mode(mode)


class _vi_quote(ViTextCommandBase):
    def run(self, edit, mode=None, character=None, count=1):
        def f(view, s):
            if mode == modes.VISUAL:
                if s.a <= s.b:
                    if address.b < s.b:
                        return sublime.Region(s.a + 1, address.b)
                    else:
                        return sublime.Region(s.a, address.b)
                else:
                    return sublime.Region(s.a + 1, address.b)
            elif mode == modes.NORMAL:
                return address
            elif mode == modes.INTERNAL_NORMAL:
                return sublime.Region(view.line(s.a).a, view.full_line(address.b).b)

            return s

        state = self.state

        address = state.marks.get_as_encoded_address(character)

        if address is None:
            return

        if isinstance(address, str):
            if not address.startswith('<command'):
                self.view.window().open_file(address, sublime.ENCODED_POSITION)
            else:
                # We get a command in this form: <command _vi_double_quote>
                self.view.run_command(address.split(' ')[1][:-1])
            return

        # This is a motion in a composite command.
        regions_transformer(self.view, f)


class _vi_backtick(ViTextCommandBase):
    def run(self, edit, count=1, mode=None, character=None):
        def f(view, s):
            if mode == modes.VISUAL:
                if s.a <= s.b:
                    if address.b < s.b:
                        return sublime.Region(s.a + 1, address.b)
                    else:
                        return sublime.Region(s.a, address.b)
                else:
                    return sublime.Region(s.a + 1, address.b)
            elif mode == modes.NORMAL:
                return address
            elif mode == modes.INTERNAL_NORMAL:
                return sublime.Region(s.a, address.b)

            return s

        state = self.state
        address = state.marks.get_as_encoded_address(character, exact=True)

        if address is None:
            return

        if isinstance(address, str):
            if not address.startswith('<command'):
                self.view.window().open_file(address, sublime.ENCODED_POSITION)
            return

        # This is a motion in a composite command.
        regions_transformer(self.view, f)


class _vi_quote_quote(IrreversibleTextCommand):
    next_command = 'jump_back'
    def run(self):
        current = _vi_quote_quote.next_command
        self.view.window().run_command(current)
        _vi_quote_quote.next_command = ('jump_forward' if (current ==
                                                            'jump_back')
                                                       else 'jump_back')


class _vi_big_d(ViTextCommandBase):

    _can_yank = True
    _synthetize_new_line_at_eof = True

    def run(self, edit, mode=None, count=1):
        def f(view, s):
            if mode == modes.INTERNAL_NORMAL:
                if count == 1:
                    if view.line(s.b).size() > 0:
                        eol = view.line(s.b).b
                        return sublime.Region(s.b, eol)
                    return s
            return s

        self.save_sel()
        regions_transformer(self.view, f)

        state = self.state
        state.registers.yank(self)

        self.view.run_command('left_delete')

        self.enter_normal_mode(mode)


class _vi_big_c(ViTextCommandBase):

    _can_yank = True
    _synthetize_new_line_at_eof = True

    def run(self, edit, mode=None, count=1):
        def f(view, s):
            if mode == modes.INTERNAL_NORMAL:
                if count == 1:
                    if view.line(s.b).size() > 0:
                        eol = view.line(s.b).b
                        return sublime.Region(s.b, eol)
                    return s
            return s

        self.save_sel()
        regions_transformer(self.view, f)

        state = self.state
        state.registers.yank(self)

        empty = [s for s  in list(self.view.sel()) if s.empty()]
        self.view.add_regions('vi_empty_sels', empty)
        for r in empty:
            self.view.sel().subtract(r)

        self.view.run_command('right_delete')

        self.view.sel().add_all(self.view.get_regions('vi_empty_sels'))
        self.view.erase_regions('vi_empty_sels')

        self.enter_insert_mode(mode)


class _vi_big_s_action(ViTextCommandBase):

    _can_yank = True
    _synthetize_new_line_at_eof = True

    def run(self, edit, mode=None, count=1, register=None):
        def sel_line(view, s):
            if mode == modes.INTERNAL_NORMAL:
                if count == 1:
                    if view.line(s.b).size() > 0:
                        eol = view.line(s.b).b
                        begin = view.line(s.b).a
                        begin = utils.next_non_white_space_char(view, begin, white_space=' \t')
                        return sublime.Region(begin, eol)
                    return s
            return s

        regions_transformer(self.view, sel_line)

        state = self.state
        state.registers.yank(self, register)

        empty = [s for s  in list(self.view.sel()) if s.empty()]
        self.view.add_regions('vi_empty_sels', empty)
        for r in empty:
            self.view.sel().subtract(r)

        self.view.run_command('right_delete')

        self.view.sel().add_all(self.view.get_regions('vi_empty_sels'))
        self.view.erase_regions('vi_empty_sels')

        self.enter_insert_mode(mode)


class _vi_s(ViTextCommandBase):
    """
    Implementation of Vim's 's' action.
    """
    # Yank config data.
    _can_yank = True
    _populates_small_delete_register = True
    def run(self, edit, mode=None, count=1, register=None):
        def select(view, s):
            if view.line(s.b).empty():
                return sublime.Region(s.b)
            return sublime.Region(s.b, s.b + 1)

        self.save_sel()

        if mode not in (modes.VISUAL, modes.VISUAL_LINE, modes.VISUAL_BLOCK):
            regions_transformer(self.view, select)

            if not self.has_sel_changed():
                self.enter_insert_mode(mode)
                return

        state = self.state

        state.registers.yank(self, register)
        self.view.run_command('right_delete')

        self.enter_insert_mode(mode)


class _vi_x(ViTextCommandBase):
    """
    Implementation of Vim's x action.
    """
    _can_yank = True
    _populates_small_delete_register = True

    def run(self, edit, mode=None, count=1, register=None):
        state = self.state

        if mode not in (modes.VISUAL, modes.VISUAL_LINE, modes.VISUAL_BLOCK):
            self.view.run_command('_vi_l', {'mode': mode, 'count': count})

        state.registers.yank(self, register)
        self.view.run_command('right_delete')

        self.enter_normal_mode(mode)

class _vi_r(ViTextCommandBase):

    _can_yank = True
    _synthetize_new_line_at_eof = True
    _populates_small_delete_register = True

    def run(self, edit, mode=None, count=1, register=None, char=None):
        def f(view, s):
            if mode == modes.INTERNAL_NORMAL:
                pt = s.b + count
                fragments = view.split_by_newlines(sublime.Region(s.a, pt))

                new_framents = []
                for fr in fragments:
                    new_framents.append(char * len(fr))
                text = '\n'.join(new_framents)

                view.replace(edit, sublime.Region(s.a, pt), text)

                if char == '\n':
                    return sublime.Region(s.b + 1)
                else:
                    return sublime.Region(s.b)

            if mode == modes.VISUAL:
                fragments = view.split_by_newlines(s)

                new_framents = []
                for fr in fragments:
                    new_framents.append(char * len(fr))
                text = '\n'.join(new_framents)

                view.replace(edit, s, text)

                if char == '\n':
                    return sublime.Region(s.begin() + 1)
                else:
                    return sublime.Region(s.begin())

        if char is None:
            raise ValueError('bad parameters')

        char = utils.translate_char(char)

        state = self.state
        state.registers.yank(self, register)
        regions_transformer(self.view, f)

        self.enter_normal_mode(mode)


class _vi_less_than_less_than_motion(sublime_plugin.TextCommand):
    def run(self, edit, count=None, mode=None):
        def f(view, s):
            if mode == modes.INTERNAL_NORMAL:
                if count > 1:
                    begin = view.line(s.begin()).a
                    pt = view.text_point(view.rowcol(begin)[0] + (count - 1), 0)
                    end = view.line(pt).b
                    return sublime.Region(begin, end)
            return s

        regions_transformer(self.view, f)


class _vi_less_than_less_than(sublime_plugin.TextCommand):
    def run(self, edit, mode=None, count=None):
        def f(view, s):
            bol = view.line(s.begin()).a
            pt = utils.next_non_white_space_char(view, bol, white_space='\t ')
            return sublime.Region(pt)

        self.view.run_command('_vi_less_than_less_than_motion', {'mode': mode, 'count': count})
        self.view.run_command('unindent')
        regions_transformer(self.view, f)


class _vi_equal_equal(ViTextCommandBase):
    def run(self, edit, mode=None, count=1):
        def f(view, s):
            return sublime.Region(s.begin())

        def select():
            s0 = self.view.sel()[0]
            end_row = utils.row_at(self.view, s0.b) + (count - 1)
            self.view.sel().clear()
            self.view.sel().add(sublime.Region(s0.begin(),
                                self.view.text_point(end_row, 1)))

        if count > 1:
            select()

        self.view.run_command('reindent', {'force_indent': False})

        regions_transformer(self.view, f)
        self.enter_normal_mode(mode)


class _vi_greater_than_greater_than(ViTextCommandBase):
    def run(self, edit, mode=None, count=1):
        def f(view, s):
            return sublime.Region(s.begin())

        def select():
            s0 = self.view.sel()[0]
            end_row = utils.row_at(self.view, s0.b) + (count - 1)
            self.view.sel().clear()
            self.view.sel().add(sublime.Region(s0.begin(),
                                self.view.text_point(end_row, 1)))

        if count > 1:
            select()

        self.view.run_command('indent')

        regions_transformer(self.view, f)
        self.enter_normal_mode(mode)


class _vi_greater_than(ViTextCommandBase):
    def run(self, edit, mode=None, count=1, motion=None):
        def f(view, s):
            return sublime.Region(s.begin())

        if motion:
            self.view.run_command(motion['motion'], motion['motion_args'])
        elif mode not in (modes.VISUAL, modes.VISUAL_LINE):
            utils.blink()
            return

        self.view.run_command('indent')

        regions_transformer(self.view, f)
        self.enter_normal_mode(mode)


class _vi_less_than(ViTextCommandBase):
    def run(self, edit, mode=None, count=1, motion=None):
        def f(view, s):
            return sublime.Region(s.begin())

        if motion:
            self.view.run_command(motion['motion'], motion['motion_args'])
        elif mode not in (modes.VISUAL, modes.VISUAL_LINE):
            utils.blink()
            return

        self.view.run_command('unindent')

        regions_transformer(self.view, f)
        self.enter_normal_mode(mode)


class _vi_equal(ViTextCommandBase):
    def run(self, edit, mode=None, count=1, motion=None):
        def f(view, s):
            return sublime.Region(s.begin())

        if motion:
            self.view.run_command(motion['motion'], motion['motion_args'])
        elif mode not in (modes.VISUAL, modes.VISUAL_LINE):
            utils.blink()
            return

        self.view.run_command('reindent', {'force_indent': False})

        regions_transformer(self.view, f)
        self.enter_normal_mode(mode)



class _vi_big_o(ViTextCommandBase):
    def run(self, edit, count=1, mode=None):
        if mode == modes.INTERNAL_NORMAL:
            self.view.run_command('run_macro_file', {'file': 'res://Packages/Default/Add Line Before.sublime-macro'})

        self.enter_insert_mode(mode)


class _vi_o(ViTextCommandBase):
    def run(self, edit, count=1, mode=None):
        if mode == modes.INTERNAL_NORMAL:
            self.view.run_command('run_macro_file', {'file': 'res://Packages/Default/Add Line.sublime-macro'})

        self.enter_insert_mode(mode)


class _vi_big_x(ViTextCommandBase):

    _can_yank = True
    _populates_small_delete_register = True

    def run(self, edit, mode=None, count=1, register=None):
        def select(view, s):
            if mode == modes.INTERNAL_NORMAL:
                return sublime.Region(s.b, s.b - count)
            elif mode == modes.VISUAL:
                if s.a < s.b:
                    return sublime.Region(view.full_line(s.b - 1).b,
                                          view.line(s.a).a)
                return sublime.Region(view.line(s.b).a,
                                      view.full_line(s.a - 1).b)
            return sublme.Region(s.begin(), s.end())

        regions_transformer(self.view, select)

        state = self.state
        state.registers.yank(self, register)

        self.view.run_command('left_delete')

        self.enter_normal_mode(mode)

class _vi_big_p(ViTextCommandBase):

    _can_yank = True
    _synthetize_new_line_at_eof = True
    _yanks_linewise = True

    def run(self, edit, register=None, count=1, mode=None):
        state = self.state

        if state.mode == modes.VISUAL:
            # force register population. We have to do it here
            # vi_cmd_data = {
            #     "synthetize_new_line_at_eof": True,
            #     "yanks_linewise": False,
            # }
            prev_text = state.registers.get_selected_text(self)

        if register:
            fragments = state.registers[register]
        else:
            # TODO: There should be a simpler way of getting the unnamed register's content.
            fragments = state.registers['"']

        if state.mode == modes.VISUAL:
            # Populate registers with the text we're about to paste.
            state.registers['"'] = prev_text

        sels = list(self.view.sel())
        if len(sels) == len(fragments):
            sel_frag = zip(sels, fragments)
        else:
            sel_frag = zip(sels, [fragments[0],] * len(sels))

        pasting_linewise = True
        offset = 0
        paste_locations = []
        for s, text in sel_frag:
            row = self.view.rowcol(s.begin())[0]
            row = max(0, row - 1)
            if text.endswith('\n'):
                if utils.is_at_eol(self.view, s) or utils.is_at_bol(self.view, s):
                    l = self.paste_all(edit, s, self.view.line(s.b).a, text, count)
                    paste_locations.append(l)
                else:
                    l = self.paste_all(edit, s, self.view.line(s.b - 1).a, text, count)
                    paste_locations.append(l)
            else:
                pasting_linewise = False
                l = self.paste_all(edit, s, s.b + offset, text, count)
                paste_locations.append(l)
                offset += len(text) * count

        if pasting_linewise:
            self.reset_carets_linewise()
        else:
            self.reset_carets_charwise(paste_locations, len(text))

    def paste_all(self, edit, sel, at, text, count):
        # for x in range(count):
        #     self.view.insert(edit, at, text)
        state = self.state
        if state.mode not in (modes.VISUAL, modes.VISUAL_LINE):
            for x in range(count):
                self.view.insert(edit, at, text)
            return at + (len(text) * (count - 1))

        else:
            if text.endswith('\n'):
                text = text * count
                if not text.startswith('\n'):
                    text = '\n' + text
            else:
                text = text * count
            self.view.replace(edit, sel, text)
            return sel.begin()

    def reset_carets_charwise(self, paste_locations, paste_len):
        # FIXME: Won't work for multiple jagged pastes...
        b_pts = [s.b for s in list(self.view.sel())]
        if len(b_pts) > 1:
            self.view.sel().clear()
            self.view.sel().add_all([sublime.Region(ploc + paste_len - 1,
                                                    ploc + paste_len - 1)
                                            for ploc in paste_locations])
        else:
            self.view.sel().clear()
            self.view.sel().add(sublime.Region(paste_locations[0] + paste_len - 1,
                                               paste_locations[0] + paste_len - 1))

    def reset_carets_linewise(self):
        # FIXME: Won't work well for visual selections...
        # FIXME: This might not work for cmdline paste command (the target row isn't necessarily
        #        the next one.
        def deselect_visual_line(view, s):
            return sublime.Region(s.a)
        state = self.state
        if state.mode == modes.VISUAL_LINE:
            regions_transformer(self.view, deselect_visual_line)
        else:
            # After pasting linewise, we should move the caret one line down.
            b_pts = [s.b for s in list(self.view.sel())]
            new_rows = [self.view.rowcol(b)[0] + 1 for b in b_pts]
            row_starts = [self.view.text_point(r, 0) for r in new_rows]
            self.view.sel().clear()
            self.view.sel().add_all([sublime.Region(pt, pt) for pt in row_starts])


class _vi_p(ViTextCommandBase):

    _can_yank = True
    _synthetize_new_line_at_eof = True
    _yanks_linewise = True

    def run(self, edit, register=None, count=1, mode=None):
        state = self.state
        register = register or '"'
        fragments = state.registers[register]
        if not fragments:
            print("Vintageous: Nothing in register \".")
            return

        if state.mode == modes.VISUAL:
            # force register population. We have to do it here
            # vi_cmd_data = {
            #     "synthetize_new_line_at_eof": True,
            #     "yanks_linewise": False,
            # }
            prev_text = state.registers.get_selected_text(self)
            state.registers['"'] = prev_text

        sels = list(self.view.sel())
        # If we have the same number of pastes and selections, map 1:1. Otherwise paste paste[0]
        # to all target selections.
        if len(sels) == len(fragments):
            sel_to_frag_mapped = zip(sels, fragments)
        else:
            sel_to_frag_mapped = zip(sels, [fragments[0],] * len(sels))

        # FIXME: Fix this mess. Separate linewise from charwise pasting.
        pasting_linewise = True
        offset = 0
        paste_locations = []
        for selection, fragment in reversed(list(sel_to_frag_mapped)):
            fragment = self.prepare_fragment(fragment)
            if fragment.startswith('\n'):
                # Pasting linewise...
                # If pasting at EOL or BOL, make sure we paste before the newline character.
                if (utils.is_at_eol(self.view, selection) or
                    utils.is_at_bol(self.view, selection)):
                    l = self.paste_all(edit, selection,
                                       self.view.line(selection.b).b,
                                       fragment,
                                       count)
                    paste_locations.append(l)
                else:
                    l = self.paste_all(edit, selection,
                                   self.view.line(selection.b - 1).b,
                                   fragment,
                                   count)
                    paste_locations.append(l)
            else:
                pasting_linewise = False
                # Pasting charwise...
                # If pasting at EOL, make sure we don't paste after the newline character.
                if self.view.substr(selection.b) == '\n':
                    l = self.paste_all(edit, selection, selection.b + offset,
                                   fragment, count)
                    paste_locations.append(l)
                else:
                    l = self.paste_all(edit, selection, selection.b + offset + 1,
                                   fragment, count)
                    paste_locations.append(l)
                offset += len(fragment) * count

        if pasting_linewise:
            self.reset_carets_linewise()
        else:
            self.reset_carets_charwise(paste_locations, len(fragment))

        self.enter_normal_mode(mode)

    def reset_carets_charwise(self, paste_locations, paste_len):
        # FIXME: Won't work for multiple jagged pastes...
        b_pts = [s.b for s in list(self.view.sel())]
        if len(b_pts) > 1:
            self.view.sel().clear()
            self.view.sel().add_all([sublime.Region(ploc + paste_len - 1,
                                                    ploc + paste_len - 1)
                                            for ploc in paste_locations])
        else:
            self.view.sel().clear()
            self.view.sel().add(sublime.Region(paste_locations[0] + paste_len - 1,
                                               paste_locations[0] + paste_len - 1))

    def reset_carets_linewise(self):
        # FIXME: Won't work well for visual selections...
        # FIXME: This might not work for cmdline paste command (the target row isn't necessarily
        #        the next one.
        def deselect_visual_line(view, s):
            return sublime.Region(s.a)

        state = self.state
        if state.mode == modes.VISUAL_LINE:
            regions_transformer(self.view, deselect_visual_line)
        else:
            # After pasting linewise, we should move the caret one line down.
            b_pts = [s.b for s in list(self.view.sel())]
            new_rows = [self.view.rowcol(b)[0] + 1 for b in b_pts]
            row_starts = [self.view.text_point(r, 0) for r in new_rows]
            self.view.sel().clear()
            self.view.sel().add_all([sublime.Region(pt, pt) for pt in row_starts])

    def prepare_fragment(self, text):
        if text.endswith('\n') and text != '\n':
            text = '\n' + text[0:-1]
        return text

    # TODO: Improve this signature.
    def paste_all(self, edit, sel, at, text, count):
        state = self.state
        if state.mode not in (modes.VISUAL, modes.VISUAL_LINE):
            # TODO: generate string first, then insert?
            # Make sure we can paste at EOF.
            at = at if at <= self.view.size() else self.view.size()
            for x in range(count):
                self.view.insert(edit, at, text)
                # Return position at which we have just pasted.
            return at
        else:
            if text.startswith('\n'):
                text = text * count
                if not text.endswith('\n'):
                    text = text + '\n'
            else:
                text = text * count

            if state.mode == modes.VISUAL_LINE:
                if text.startswith('\n'):
                    text = text[1:]

            self.view.replace(edit, sel, text)
            # Return position at which we have just pasted.
            return sel.a


class _vi_gt(ViWindowCommandBase):
    def run(self, count=1, mode=None):
        self.window.run_command('tab_control', {'command': 'next'})
        self.window.run_command('_enter_normal_mode', {'mode': mode})


class _vi_g_big_t(ViWindowCommandBase):
    def run(self, count=1, mode=None):
        self.window.run_command('tab_control', {'command': 'prev'})
        self.window.run_command('_enter_normal_mode', {'mode': mode})


class _vi_ctrl_w_q(IrreversibleTextCommand):
    def run(self, count=1, mode=None):
        if self.view.is_dirty():
            sublime.status_message('Unsaved changes.')
            return

        self.view.close()


class _vi_ctrl_w_v(IrreversibleTextCommand):
    def run(self, count=1, mode=None):
        self.view.window().run_command('ex_vsplit')


class _vi_ctrl_w_l(IrreversibleTextCommand):
    # TODO: Should be a window command instead.
    # TODO: Should focus the group to the right only, not the 'next' group.
    def run(self, mode=None, count=None):
        w = self.view.window()
        current_group = w.active_group()
        if w.num_groups() > 1:
            w.focus_group(current_group + 1)


class _vi_ctrl_w_big_l(IrreversibleTextCommand):
    def run(self, mode=None, count=1):
        w = self.view.window()
        current_group = w.active_group()
        if w.num_groups() > 1:
            w.set_view_index(self.view, current_group + 1, 0)
            w.focus_group(current_group + 1)


class _vi_ctrl_w_h(IrreversibleTextCommand):
    # TODO: Should be a window command instead.
    # TODO: Should focus the group to the left only, not the 'previous' group.
    def run(self, mode=None, count=1):
        w = self.view.window()
        current_group = w.active_group()
        if current_group > 0:
            w.focus_group(current_group - 1)


class _vi_ctrl_w_big_h(IrreversibleTextCommand):
    def run(self, mode=None, count=1):
        w = self.view.window()
        current_group = w.active_group()
        if current_group > 0:
            w.set_view_index(self.view, current_group - 1, 0)
            w.focus_group(current_group - 1)


class _vi_z_enter(IrreversibleTextCommand):
    def __init__(self, view):
        IrreversibleTextCommand.__init__(self, view)

    def run(self, count=1, mode=None):
        first_sel = self.view.sel()[0]
        current_row = self.view.rowcol(first_sel.b)[0] - 1

        topmost_visible_row, _ = self.view.rowcol(self.view.visible_region().a)

        self.view.run_command('scroll_lines', {'amount': (topmost_visible_row - current_row)})


class _vi_z_minus(IrreversibleTextCommand):
    def __init__(self, view):
        IrreversibleTextCommand.__init__(self, view)

    def run(self, count=1, mode=None):
        first_sel = self.view.sel()[0]
        current_row = self.view.rowcol(first_sel.b)[0]

        bottommost_visible_row, _ = self.view.rowcol(self.view.visible_region().b)

        number_of_lines = (bottommost_visible_row - current_row) - 1

        if number_of_lines > 1:
            self.view.run_command('scroll_lines', {'amount': number_of_lines})


class _vi_zz(IrreversibleTextCommand):
    def __init__(self, view):
        IrreversibleTextCommand.__init__(self, view)

    def run(self, count=1, mode=None):
        first_sel = self.view.sel()[0]
        current_row = self.view.rowcol(first_sel.b)[0]

        topmost_visible_row, _ = self.view.rowcol(self.view.visible_region().a)
        bottommost_visible_row, _ = self.view.rowcol(self.view.visible_region().b)

        middle_row = (topmost_visible_row + bottommost_visible_row) / 2

        self.view.run_command('scroll_lines', {'amount': (middle_row - current_row)})


class _vi_modify_numbers(sublime_plugin.TextCommand):
    """
    Base class for Ctrl-x and Ctrl-a.
    """
    DIGIT_PAT = re.compile('(\D+?)?(-)?(\d+)(\D+)?')
    NUM_PAT = re.compile('\d')

    def get_editable_data(self, pt):
        sign = -1 if (self.view.substr(pt - 1) == '-') else 1
        end = pt
        while self.view.substr(end).isdigit():
            end += 1
        return (sign, int(self.view.substr(sublime.Region(pt, end))),
                sublime.Region(end, self.view.line(pt).b))


    def find_next_num(self, regions):
        # Modify selections that are inside a number already.
        for i, r in enumerate(regions):
            a = r.b
            if self.view.substr(r.b).isdigit():
                while self.view.substr(a).isdigit():
                    a -=1
                regions[i] = sublime.Region(a)

        lines = [self.view.substr(sublime.Region(r.b, self.view.line(r.b).b)) for r in regions]
        matches = [_vi_modify_numbers.NUM_PAT.search(text) for text in lines]
        if all(matches):
            return [(reg.b + ma.start()) for (reg, ma) in zip(regions, matches)]
        return []

    def run(self, edit, count=1, mode=None, subtract=False):
        if mode != modes.INTERNAL_NORMAL:
            return

        # TODO: Deal with octal, hex notations.
        # TODO: Improve detection of numbers.
        regs = list(self.view.sel())

        pts = self.find_next_num(regs)
        if not pts:
            utils.utils.blink()
            return

        count = count if not subtract else -count
        end_sels = []
        for pt in reversed(pts):
            sign, num, tail = self.get_editable_data(pt)

            num_as_text = str((sign * num) + count)
            new_text = num_as_text + self.view.substr(tail)

            offset = 0
            if sign == -1:
                offset = -1
                self.view.replace(edit, sublime.Region(pt - 1, tail.b), new_text)
            else:
                self.view.replace(edit, sublime.Region(pt, tail.b), new_text)

            rowcol = self.view.rowcol(pt + len(num_as_text) - 1 + offset)
            end_sels.append(rowcol)

        self.view.sel().clear()
        for (row, col) in end_sels:
            self.view.sel().add(sublime.Region(self.view.text_point(row, col)))


class _vi_select_big_j(IrreversibleTextCommand):
    """
    Active in select mode. Clears multiple selections and returns to normal
    mode. Should be more convenient than having to reach for Esc.
    """
    def run(self, mode=None, count=1):
        s = self.view.sel()[0]
        self.view.sel().clear()
        self.view.sel().add(s)
        self.view.run_command('_enter_normal_mode', {'mode': mode})


class _vi_big_j(sublime_plugin.TextCommand):
    WHITE_SPACE = ' \t'

    def run(self, edit, mode=None, separator=' ', count=1):
        sels = self.view.sel()
        s = sublime.Region(sels[0].a, sels[-1].b)
        if mode == modes.INTERNAL_NORMAL:
            end_pos = self.view.line(s.b).b
            start = end = s.b
            if count > 2:
                end = self.view.text_point(utils.row_at(self.view, s.b) + (count - 1), 0)
                end = self.view.line(end).b
            else:
                # Join current line and the next.
                end = self.view.text_point(utils.row_at(self.view, s.b) + 1, 0)
                end = self.view.line(end).b
        elif mode in [modes.VISUAL, modes.VISUAL_LINE, modes.VISUAL_BLOCK]:
            if s.a < s.b:
                end_pos = self.view.line(s.a).b
                start = s.a
                if utils.row_at(self.view, s.b - 1) == utils.row_at(self.view, s.a):
                    end = self.view.text_point(utils.row_at(self.view, s.a) + 1, 0)
                else:
                    end = self.view.text_point(utils.row_at(self.view, s.b - 1), 0)
                end = self.view.line(end).b
            else:
                end_pos = self.view.line(s.b).b
                start = s.b
                if utils.row_at(self.view, s.b) == utils.row_at(self.view, s.a - 1):
                    end = self.view.text_point(utils.row_at(self.view, s.a - 1) + 1, 0)
                else:
                    end = self.view.text_point(utils.row_at(self.view, s.a - 1), 0)
                end = self.view.line(end).b
        else:
            return s

        text_to_join = self.view.substr(sublime.Region(start, end))
        lines = text_to_join.split('\n')

        if separator:
            # J
            joined_text = lines[0]
            for line in lines[1:]:
                line = line.lstrip()
                if joined_text and joined_text[-1] not in self.WHITE_SPACE:
                    line = ' ' + line
                joined_text += line
        else:
            # gJ
            joined_text = ''.join(lines)

        self.view.replace(edit, sublime.Region(start, end), joined_text)
        sels.clear()
        sels.add(sublime.Region(end_pos))


class _vi_gv(IrreversibleTextCommand):
    def run(self, mode=None, count=None):
        sels = self.view.get_regions('visual_sel')
        if not sels:
            return

        self.view.window().run_command('_enter_visual_mode', {'mode': mode})
        self.view.sel().clear()
        self.view.sel().add_all(sels)


class _vi_ctrl_e(sublime_plugin.TextCommand):
    def run(self, edit, mode=None, count=1):
        # TODO: Implement this motion properly; don't use built-in commands.
        # We're using an action because we don't care too much right now and we don't want the
        # motion to utils.blink every time we issue it (it does because the selections don't change and
        # Vintageous rightfully thinks it has failed.)
        if mode == modes.VISUAL_LINE:
            return
        extend = True if mode == modes.VISUAL else False
        self.view.run_command('scroll_lines', {'amount': -1, 'extend': extend})


class _vi_ctrl_y(sublime_plugin.TextCommand):
    def run(self, edit, mode=None, count=1):
        # TODO: Implement this motion properly; don't use built-in commands.
        # We're using an action because we don't care too much right now and we don't want the
        # motion to utils.blink every time we issue it (it does because the selections don't change and
        # Vintageous rightfully thinks it has failed.)
        if mode == modes.VISUAL_LINE:
            return
        extend = True if mode == modes.VISUAL else False
        self.view.run_command('scroll_lines', {'amount': 1, 'extend': extend})


class _vi_big_y(ViTextCommandBase):

    _can_yank = True
    _synthetize_new_line_at_eof = True

    def run(self, edit, count=1, mode=None, register=None):
        def select(view, s):
            if mode == modes.INTERNAL_NORMAL:
                pt = view.text_point(view.rowcol(s.b)[0] + (count - 1), 0)
                return sublime.Region(view.full_line(pt).b, view.line(s.b).a)

            elif mode == modes.VISUAL:
                # TODO: Restore xpos after yanking.
                if s.a < s.b:
                    return sublime.Region(view.full_line(s.b - 1).b,
                                          view.line(s.a).a)
                return sublime.Region(view.line(s.b).a,
                                      view.full_line(s.a - 1).b)

            raise ValueError('unsupported mode')

        try:
            regions_transformer(self.view, select)
        except ValueError:
            utils.blink()
            self.enter_normal_mode(mode)
            return

        self.outline_target()
        self.state.registers.yank(self, register)

        self.enter_normal_mode(mode)


class _vi_ctrl_r_equal(sublime_plugin.TextCommand):
    def run(self, edit, insert=False, next_mode=None):
        def on_done(s):
            state = State(self.view)
            try:
                rv = [str(eval(s, None, None)),]
                if not insert:
                    state.registers[REG_EXPRESSION] = rv
                else:
                    self.view.run_command('insert_snippet', {'contents': str(rv[0])})
                    state.reset()
            except:
                sublime.status_message("Vintageous: Invalid expression.")
                on_cancel()

        def on_cancel():
            state = VintageState(self.view)
            state.reset()

        self.view.window().show_input_panel('', '', on_done, None, on_cancel)


class _vi_q(IrreversibleTextCommand):
    def run(self, name=None, mode=None, count=1):
        # TODO: We ignore the name.
        state = State(self.view)

        if state.recording_macro:
            self.view.run_command('toggle_record_macro')
            cmds = []
            for c in sublime.get_macro():
                cmds.append([c['command'], c['args']])
            state.last_macro = cmds
            state.recording_macro = False
            sublime.status_message('')
            return
        self.view.run_command('toggle_record_macro')
        state.recording_macro = True
        sublime.status_message('[Vintageous] Recording macro...')


class _vi_at(IrreversibleTextCommand):
    def run(self, name=None, mode=None, count=1):
        # TODO: We ignore the name.
        state = State(self.view)

        if not (state.gluing_sequence or state.recording_macro):
            self.view.run_command('mark_undo_groups_for_gluing')

        cmds = state.last_macro
        for i in range(count):

            self.view.run_command('sequence', {'commands': cmds})

        if not (state.gluing_sequence or state.recording_macro):
            self.view.run_command('glue_marked_undo_groups')


class _enter_visual_block_mode(ViTextCommandBase):
    def run(self, edit, mode=None):
        def f(view, s):
            return sublime.Region(s.b, s.b + 1)
        # Handling multiple visual blocks seems quite hard, so ensure we only
        # have one.
        first = list(self.view.sel())[0]
        self.view.sel().clear()
        self.view.sel().add(first)

        state = State(self.view)
        state.enter_visual_block_mode()

        if not self.view.has_non_empty_selection_region():
            regions_transformer(self.view, f)


class _vi_select_j(ViWindowCommandBase):
    def run(self, count=1, mode=None):
        if mode != modes.SELECT:
            raise ValueError('wrong mode')

        for i in range(count):
            self.window.run_command('find_under_expand')


class _vi_tilde(ViTextCommandBase):
    """
    Implemented as if 'notildeopt' was `True`.
    """
    def run(self, edit, count=1, mode=None, motion=None):
        def select(view, s):
            if mode == modes.VISUAL:
                return sublime.Region(s.end(), s.begin())
            return sublime.Region(s.begin(), s.end() + count)

        def after(view, s):
            return sublime.Region(s.begin())

        regions_transformer(self.view, select)
        self.view.run_command('swap_case')

        if mode in (modes.VISUAL, modes.VISUAL_LINE, modes.VISUAL_BLOCK):
            regions_transformer(self.view, after)

        self.enter_normal_mode(mode)


class _vi_g_tilde(ViTextCommandBase):
    def run(self, edit, count=1, mode=None, motion=None):
        def f(view, s):
            return sublime.Region(s.end(), s.begin())

        if motion:
            self.save_sel()

            self.view.run_command(motion['motion'], motion['motion_args'])

            if not self.has_sel_changed():
                utils.blink()
                self.enter_normal_mode(mode)
                return

        self.view.run_command('swap_case')

        if motion:
            regions_transformer(self.view, f)

        self.enter_normal_mode(mode)


class _vi_visual_u(ViTextCommandBase):
    """
    'u' action in visual modes.
    """
    def run(self, edit, mode=None, count=1):
        for s in self.view.sel():
            self.view.replace(edit, s, self.view.substr(s).lower())

        def after(view, s):
            return sublime.Region(s.begin())

        regions_transformer(self.view, after)

        self.enter_normal_mode(mode)


class _vi_visual_big_u(ViTextCommandBase):
    """
    'U' action in visual modes.
    """
    def run(self, edit, mode=None, count=1):
        for s in self.view.sel():
            self.view.replace(edit, s, self.view.substr(s).upper())

        def after(view, s):
            return sublime.Region(s.begin())

        regions_transformer(self.view, after)

        self.enter_normal_mode(mode)


class _vi_g_tilde_g_tilde(ViTextCommandBase):
    def run(self, edit, count=1, mode=None):
        def select(view, s):
            l =  view.line(s.b)
            return sublime.Region(l.end(), l.begin())

        if mode != modes.INTERNAL_NORMAL:
            raise ValueError('wrong mode')

        regions_transformer(self.view, select)
        self.view.run_command('swap_case')
        # Ensure we leave the sel .b end where we want it.
        regions_transformer(self.view, select)

        self.enter_normal_mode(mode)


class _vi_g_big_u_big_u(ViTextCommandBase):
    def run(self, edit, mode=None, count=1):
        def select(view, s):
            l = view.line(s.b)
            return sublime.Region(l.end(), l.begin())

        def to_upper(view, s):
            view.replace(edit, s, view.substr(s).upper())
            return s

        regions_transformer(self.view, select)
        regions_transformer(self.view, to_upper)
        self.enter_normal_mode(mode)


class _vi_guu(ViTextCommandBase):
    def run(self, edit, mode=None, count=1):
        def select(view, s):
            l = view.line(s.b)
            return sublime.Region(l.end(), l.begin())

        def to_lower(view, s):
            view.replace(edit, s, view.substr(s).lower())
            return s

        regions_transformer(self.view, select)
        regions_transformer(self.view, to_lower)
        self.enter_normal_mode(mode)