Bump to 2.7

Change failed message 'No fuck given' to the more popular 'No fucks g…

.travis.yml

@@ -13,6 +13,7 @@ addons:
       - fish
       - tcsh
       - pandoc
+      - git
 env:
   - FUNCTIONAL=true BARE=true
 install:

README.md

@@ -14,7 +14,7 @@ E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied)
 E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?
 
 ➜ fuck
-sudo apt-get install vim [enter/ctrl+c]
+sudo apt-get install vim [enter/↑/↓/ctrl+c]
 [sudo] password for nvbn:
 Reading package lists... Done
 ...
@@ -29,7 +29,7 @@ To push the current branch and set the remote as upstream, use
 
 
 ➜ fuck
-git push --set-upstream origin master [enter/ctrl+c]
+git push --set-upstream origin master [enter/↑/↓/ctrl+c]
 Counting objects: 9, done.
 ...
 ```
@@ -42,7 +42,7 @@ No command 'puthon' found, did you mean:
 zsh: command not found: puthon
 
 ➜ fuck
-python [enter/ctrl+c]
+python [enter/↑/↓/ctrl+c]
 Python 3.4.2 (default, Oct  8 2014, 13:08:17)
 ...
 ```
@@ -55,7 +55,7 @@ Did you mean this?
 	branch
 
 ➜ fuck
-git branch [enter/ctrl+c]
+git branch [enter/↑/↓/ctrl+c]
 * master
 ```
 
@@ -67,7 +67,7 @@ Did you mean this?
          repl
 
 ➜ fuck
-lein repl [enter/ctrl+c]
+lein repl [enter/↑/↓/ctrl+c]
 nREPL server started on port 54848 on host 127.0.0.1 - nrepl://127.0.0.1:54848
 REPL-y 0.3.1
 ...
@@ -107,9 +107,9 @@ sudo pip install thefuck
 You should place this command in your `.bash_profile`, `.bashrc`, `.zshrc` or other startup script:
 
 ```bash
-eval "$(thefuck-alias)"
+eval "$(thefuck --alias)"
 # You can use whatever you want as an alias, like for Mondays:
-eval "$(thefuck-alias FUCK)"
+eval "$(thefuck --alias FUCK)"
 ```
 
 [Or in your shell config (Bash, Zsh, Fish, Powershell, tcsh).](https://github.com/nvbn/thefuck/wiki/Shell-aliases)
@@ -213,7 +213,7 @@ in `~/.thefuck/rules`. The rule should contain two functions:
 
 ```python
 match(command: Command, settings: Settings) -> bool
-get_new_command(command: Command, settings: Settings) -> str
+get_new_command(command: Command, settings: Settings) -> str | list[str]
 ```
 
 Also the rule can contain an optional function `side_effect(command: Command, settings: Settings) -> None`

setup.py

@@ -20,7 +20,7 @@ elif (3, 0) < version < (3, 3):
           ' ({}.{} detected).'.format(*version))
     sys.exit(-1)
 
-VERSION = '2.6'
+VERSION = '2.7'
 
 install_requires = ['psutil', 'colorama', 'six']
 extras_require = {':python_version<"3.4"': ['pathlib']}

tests/functional/plots.py

@@ -1,10 +1,17 @@
+from time import sleep
 from pexpect import TIMEOUT
 
 
+def _set_confirmation(proc, require):
+    proc.sendline(u'mkdir -p ~/.thefuck')
+    proc.sendline(
+        u'echo "require_confirmation = {}" > ~/.thefuck/settings.py'.format(
+            require))
+
+
 def with_confirmation(proc):
     """Ensures that command can be fixed when confirmation enabled."""
-    proc.sendline(u'mkdir -p ~/.thefuck')
-    proc.sendline(u'echo "require_confirmation = True" > ~/.thefuck/settings.py')
+    _set_confirmation(proc, True)
 
     proc.sendline(u'ehco test')
 
@@ -17,10 +24,10 @@ def with_confirmation(proc):
     assert proc.expect([TIMEOUT, u'test'])
 
 
-def history_changed(proc):
+def history_changed(proc, to):
     """Ensures that history changed."""
     proc.send('\033[A')
-    assert proc.expect([TIMEOUT, u'echo test'])
+    assert proc.expect([TIMEOUT, to])
 
 
 def history_not_changed(proc):
@@ -29,10 +36,29 @@ def history_not_changed(proc):
     assert proc.expect([TIMEOUT, u'fuck'])
 
 
+def select_command_with_arrows(proc):
+    """Ensures that command can be selected with arrow keys."""
+    _set_confirmation(proc, True)
+
+    proc.sendline(u'git h')
+    assert proc.expect([TIMEOUT, u"git: 'h' is not a git command."])
+
+    proc.sendline(u'fuck')
+    assert proc.expect([TIMEOUT, u'git show'])
+    proc.send('\033[B')
+    assert proc.expect([TIMEOUT, u'git push'])
+    proc.send('\033[B')
+    assert proc.expect([TIMEOUT, u'git help'])
+    proc.send('\033[A')
+    assert proc.expect([TIMEOUT, u'git push'])
+    proc.send('\n')
+
+    assert proc.expect([TIMEOUT, u'Not a git repository'])
+
+
 def refuse_with_confirmation(proc):
     """Ensures that fix can be refused when confirmation enabled."""
-    proc.sendline(u'mkdir -p ~/.thefuck')
-    proc.sendline(u'echo "require_confirmation = True" > ~/.thefuck/settings.py')
+    _set_confirmation(proc, True)
 
     proc.sendline(u'ehco test')
 
@@ -47,8 +73,7 @@ def refuse_with_confirmation(proc):
 
 def without_confirmation(proc):
     """Ensures that command can be fixed when confirmation disabled."""
-    proc.sendline(u'mkdir -p ~/.thefuck')
-    proc.sendline(u'echo "require_confirmation = False" > ~/.thefuck/settings.py')
+    _set_confirmation(proc, False)
 
     proc.sendline(u'ehco test')
 

tests/functional/test_bash.py

@@ -1,51 +1,53 @@
 import pytest
 from tests.functional.plots import with_confirmation, without_confirmation, \
-    refuse_with_confirmation, history_changed, history_not_changed
+    refuse_with_confirmation, history_changed, history_not_changed, \
+    select_command_with_arrows
 from tests.functional.utils import spawn, functional, images
 
 containers = images(('ubuntu-python3-bash', u'''
 FROM ubuntu:latest
 RUN apt-get update
-RUN apt-get install -yy python3 python3-pip python3-dev
+RUN apt-get install -yy python3 python3-pip python3-dev git
 RUN pip3 install -U setuptools
 RUN ln -s /usr/bin/pip3 /usr/bin/pip
 '''),
                     ('ubuntu-python2-bash', u'''
 FROM ubuntu:latest
 RUN apt-get update
-RUN apt-get install -yy python python-pip python-dev
+RUN apt-get install -yy python python-pip python-dev git
 RUN pip2 install -U pip setuptools
 '''))
 
 
-@functional
-@pytest.mark.parametrize('tag, dockerfile', containers)
-def test_with_confirmation(tag, dockerfile):
-    with spawn(tag, dockerfile, u'bash') as proc:
-        proc.sendline(u"export PS1='$ '")
-        proc.sendline(u'eval $(thefuck-alias)')
-        proc.sendline(u'touch $HISTFILE')
-        with_confirmation(proc)
-        history_changed(proc)
+@pytest.fixture(params=containers)
+def proc(request):
+    tag, dockerfile = request.param
+    proc = spawn(request, tag, dockerfile, u'bash')
+    proc.sendline(u"export PS1='$ '")
+    proc.sendline(u'eval $(thefuck-alias)')
+    proc.sendline(u'echo > $HISTFILE')
+    return proc
 
 
 @functional
-@pytest.mark.parametrize('tag, dockerfile', containers)
-def test_refuse_with_confirmation(tag, dockerfile):
-    with spawn(tag, dockerfile, u'bash') as proc:
-        proc.sendline(u"export PS1='$ '")
-        proc.sendline(u'eval $(thefuck-alias)')
-        proc.sendline(u'touch $HISTFILE')
-        refuse_with_confirmation(proc)
-        history_not_changed(proc)
+def test_with_confirmation(proc):
+    with_confirmation(proc)
+    history_changed(proc, u'echo test')
 
 
 @functional
-@pytest.mark.parametrize('tag, dockerfile', containers)
-def test_without_confirmation(tag, dockerfile):
-    with spawn(tag, dockerfile, u'bash') as proc:
-        proc.sendline(u"export PS1='$ '")
-        proc.sendline(u'eval $(thefuck-alias)')
-        proc.sendline(u'touch $HISTFILE')
-        without_confirmation(proc)
-        history_changed(proc)
+def test_select_command_with_arrows(proc):
+    select_command_with_arrows(proc)
+    history_changed(proc, u'git push')
+
+
+@functional
+def test_refuse_with_confirmation(proc):
+    refuse_with_confirmation(proc)
+    history_not_changed(proc)
+
+
+@functional
+def test_without_confirmation(proc):
+    without_confirmation(proc)
+    history_changed(proc, u'echo test')

tests/functional/test_fish.py

@@ -1,53 +1,59 @@
 import pytest
 from tests.functional.plots import with_confirmation, without_confirmation, \
-    refuse_with_confirmation
+    refuse_with_confirmation, select_command_with_arrows
 from tests.functional.utils import spawn, functional, images, bare
 
 containers = images(('ubuntu-python3-fish', u'''
 FROM ubuntu:latest
 RUN apt-get update
-RUN apt-get install -yy python3 python3-pip python3-dev fish
+RUN apt-get install -yy python3 python3-pip python3-dev fish git
 RUN pip3 install -U setuptools
 RUN ln -s /usr/bin/pip3 /usr/bin/pip
+RUN apt-get install -yy fish
 '''),
                     ('ubuntu-python2-fish', u'''
 FROM ubuntu:latest
 RUN apt-get update
-RUN apt-get install -yy python python-pip python-dev fish
+RUN apt-get install -yy python python-pip python-dev git
 RUN pip2 install -U pip setuptools
+RUN apt-get install -yy fish
 '''))
 
 
-@functional
-@pytest.mark.skipif(
-    bool(bare), reason='https://github.com/travis-ci/apt-source-whitelist/issues/71')
-@pytest.mark.parametrize('tag, dockerfile', containers)
-def test_with_confirmation(tag, dockerfile):
-    with spawn(tag, dockerfile, u'fish') as proc:
-        proc.sendline(u'thefuck-alias > ~/.config/fish/config.fish')
-        proc.sendline(u'fish')
-        with_confirmation(proc)
+@pytest.fixture(params=containers)
+def proc(request):
+    tag, dockerfile = request.param
+    proc = spawn(request, tag, dockerfile, u'fish')
+    proc.sendline(u'thefuck-alias > ~/.config/fish/config.fish')
+    proc.sendline(u'fish')
+    return proc
 
 
 @functional
 @pytest.mark.skipif(
     bool(bare), reason='https://github.com/travis-ci/apt-source-whitelist/issues/71')
-@pytest.mark.parametrize('tag, dockerfile', containers)
-def test_refuse_with_confirmation(tag, dockerfile):
-    with spawn(tag, dockerfile, u'fish') as proc:
-        proc.sendline(u'thefuck-alias > ~/.config/fish/config.fish')
-        proc.sendline(u'fish')
-        refuse_with_confirmation(proc)
+def test_with_confirmation(proc):
+    with_confirmation(proc)
 
 
 @functional
 @pytest.mark.skipif(
     bool(bare), reason='https://github.com/travis-ci/apt-source-whitelist/issues/71')
-@pytest.mark.parametrize('tag, dockerfile', containers)
-def test_without_confirmation(tag, dockerfile):
-    with spawn(tag, dockerfile, u'fish') as proc:
-        proc.sendline(u'thefuck-alias > ~/.config/fish/config.fish')
-        proc.sendline(u'fish')
-        without_confirmation(proc)
+def test_select_command_with_arrows(proc):
+    select_command_with_arrows(proc)
+
+
+@functional
+@pytest.mark.skipif(
+    bool(bare), reason='https://github.com/travis-ci/apt-source-whitelist/issues/71')
+def test_refuse_with_confirmation(proc):
+    refuse_with_confirmation(proc)
+
+
+@functional
+@pytest.mark.skipif(
+    bool(bare), reason='https://github.com/travis-ci/apt-source-whitelist/issues/71')
+def test_without_confirmation(proc):
+    without_confirmation(proc)
 
 # TODO: ensure that history changes.

tests/functional/test_tcsh.py

@@ -1,47 +1,51 @@
 import pytest
 from tests.functional.utils import spawn, functional, images
 from tests.functional.plots import with_confirmation, without_confirmation, \
-    refuse_with_confirmation
+    refuse_with_confirmation, select_command_with_arrows
 
 containers = images(('ubuntu-python3-tcsh', u'''
 FROM ubuntu:latest
 RUN apt-get update
-RUN apt-get install -yy python3 python3-pip python3-dev tcsh
+RUN apt-get install -yy python3 python3-pip python3-dev git
 RUN pip3 install -U setuptools
 RUN ln -s /usr/bin/pip3 /usr/bin/pip
+RUN apt-get install -yy tcsh
 '''),
                     ('ubuntu-python2-tcsh', u'''
 FROM ubuntu:latest
 RUN apt-get update
-RUN apt-get install -yy python python-pip python-dev tcsh
+RUN apt-get install -yy python python-pip python-dev git
 RUN pip2 install -U pip setuptools
+RUN apt-get install -yy tcsh
 '''))
 
 
-@functional
-@pytest.mark.parametrize('tag, dockerfile', containers)
-def test_with_confirmation(tag, dockerfile):
-    with spawn(tag, dockerfile, u'tcsh') as proc:
-        proc.sendline(u'tcsh')
-        proc.sendline(u'eval `thefuck-alias`')
-        with_confirmation(proc)
+@pytest.fixture(params=containers)
+def proc(request):
+    tag, dockerfile = request.param
+    proc = spawn(request, tag, dockerfile, u'tcsh')
+    proc.sendline(u'tcsh')
+    proc.sendline(u'eval `thefuck-alias`')
+    return proc
 
 
 @functional
-@pytest.mark.parametrize('tag, dockerfile', containers)
-def test_refuse_with_confirmation(tag, dockerfile):
-    with spawn(tag, dockerfile, u'tcsh') as proc:
-        proc.sendline(u'tcsh')
-        proc.sendline(u'eval `thefuck-alias`')
-        refuse_with_confirmation(proc)
+def test_with_confirmation(proc):
+    with_confirmation(proc)
 
 
 @functional
-@pytest.mark.parametrize('tag, dockerfile', containers)
-def test_without_confirmation(tag, dockerfile):
-    with spawn(tag, dockerfile, u'tcsh') as proc:
-        proc.sendline(u'tcsh')
-        proc.sendline(u'eval `thefuck-alias`')
-        without_confirmation(proc)
+def test_select_command_with_arrows(proc):
+    select_command_with_arrows(proc)
+
+
+@functional
+def test_refuse_with_confirmation(proc):
+    refuse_with_confirmation(proc)
+
+
+@functional
+def test_without_confirmation(proc):
+    without_confirmation(proc)
 
 # TODO: ensure that history changes.

tests/functional/test_zsh.py

@@ -1,51 +1,57 @@
 import pytest
 from tests.functional.utils import spawn, functional, images
 from tests.functional.plots import with_confirmation, without_confirmation, \
-    refuse_with_confirmation, history_changed, history_not_changed
+    refuse_with_confirmation, history_changed, history_not_changed, select_command_with_arrows
 
 containers = images(('ubuntu-python3-zsh', u'''
 FROM ubuntu:latest
 RUN apt-get update
-RUN apt-get install -yy python3 python3-pip python3-dev zsh
+RUN apt-get install -yy python3 python3-pip python3-dev git
 RUN pip3 install -U setuptools
 RUN ln -s /usr/bin/pip3 /usr/bin/pip
+RUN apt-get install -yy zsh
 '''),
                     ('ubuntu-python2-zsh', u'''
 FROM ubuntu:latest
 RUN apt-get update
-RUN apt-get install -yy python python-pip python-dev zsh
+RUN apt-get install -yy python python-pip python-dev git
 RUN pip2 install -U pip setuptools
+RUN apt-get install -yy zsh
 '''))
 
 
-@functional
-@pytest.mark.parametrize('tag, dockerfile', containers)
-def test_with_confirmation(tag, dockerfile):
-    with spawn(tag, dockerfile, u'zsh') as proc:
-        proc.sendline(u'eval $(thefuck-alias)')
-        proc.sendline(u'export HISTFILE=~/.zsh_history')
-        proc.sendline(u'touch $HISTFILE')
-        with_confirmation(proc)
-        history_changed(proc)
+@pytest.fixture(params=containers)
+def proc(request):
+    tag, dockerfile = request.param
+    proc = spawn(request, tag, dockerfile, u'zsh')
+    proc.sendline(u'eval $(thefuck-alias)')
+    proc.sendline(u'export HISTFILE=~/.zsh_history')
+    proc.sendline(u'echo > $HISTFILE')
+    proc.sendline(u'export SAVEHIST=100')
+    proc.sendline(u'export HISTSIZE=100')
+    proc.sendline(u'setopt INC_APPEND_HISTORY')
+    return proc
 
 
 @functional
-@pytest.mark.parametrize('tag, dockerfile', containers)
-def test_refuse_with_confirmation(tag, dockerfile):
-    with spawn(tag, dockerfile, u'zsh') as proc:
-        proc.sendline(u'eval $(thefuck-alias)')
-        proc.sendline(u'export HISTFILE=~/.zsh_history')
-        proc.sendline(u'touch $HISTFILE')
-        refuse_with_confirmation(proc)
-        history_not_changed(proc)
+def test_with_confirmation(proc):
+    with_confirmation(proc)
+    history_changed(proc, u'echo test')
 
 
 @functional
-@pytest.mark.parametrize('tag, dockerfile', containers)
-def test_without_confirmation(tag, dockerfile):
-    with spawn(tag, dockerfile, u'zsh') as proc:
-        proc.sendline(u'eval $(thefuck-alias)')
-        proc.sendline(u'export HISTFILE=~/.zsh_history')
-        proc.sendline(u'touch $HISTFILE')
-        without_confirmation(proc)
-        history_changed(proc)
+def test_select_command_with_arrows(proc):
+    select_command_with_arrows(proc)
+    history_changed(proc, u'git push')
+
+
+@functional
+def test_refuse_with_confirmation(proc):
+    refuse_with_confirmation(proc)
+    history_not_changed(proc)
+
+
+@functional
+def test_without_confirmation(proc):
+    without_confirmation(proc)
+    history_changed(proc, u'echo test')

tests/functional/utils.py

@@ -1,5 +1,4 @@
 import os
-from contextlib import contextmanager
 import subprocess
 import shutil
 from tempfile import mkdtemp
@@ -15,16 +14,17 @@ enabled = os.environ.get('FUNCTIONAL')
 
 def build_container(tag, dockerfile):
     tmpdir = mkdtemp()
-    with Path(tmpdir).joinpath('Dockerfile').open('w') as file:
-        file.write(dockerfile)
-    if subprocess.call(['docker', 'build', '--tag={}'.format(tag), tmpdir],
-                       cwd=root) != 0:
-        raise Exception("Can't build a container")
-    shutil.rmtree(tmpdir)
+    try:
+        with Path(tmpdir).joinpath('Dockerfile').open('w') as file:
+            file.write(dockerfile)
+        if subprocess.call(['docker', 'build', '--tag={}'.format(tag), tmpdir],
+                           cwd=root) != 0:
+            raise Exception("Can't build a container")
+    finally:
+        shutil.rmtree(tmpdir)
 
 
-@contextmanager
-def spawn(tag, dockerfile, cmd):
+def spawn(request, tag, dockerfile, cmd):
     if bare:
         proc = pexpect.spawnu(cmd)
     else:
@@ -33,13 +33,12 @@ def spawn(tag, dockerfile, cmd):
         proc = pexpect.spawnu('docker run --volume {}:/src --tty=true '
                               '--interactive=true {} {}'.format(root, tag, cmd))
         proc.sendline('pip install /src')
+    proc.sendline('cd /')
 
     proc.logfile = sys.stdout
 
-    try:
-        yield proc
-    finally:
-        proc.terminate(force=bare)
+    request.addfinalizer(proc.terminate)
+    return proc
 
 
 def images(*items):

tests/rules/test_brew_unknown_command.py

@@ -22,7 +22,7 @@ def test_match(brew_unknown_cmd):
 
 def test_get_new_command(brew_unknown_cmd, brew_unknown_cmd2):
     assert get_new_command(Command('brew inst', stderr=brew_unknown_cmd),
-                           None) == 'brew list'
+                           None) == ['brew list', 'brew install', 'brew uninstall']
 
     assert get_new_command(Command('brew instaa', stderr=brew_unknown_cmd2),
-                           None) == 'brew install'
+                           None) == ['brew install', 'brew uninstall', 'brew list']

tests/rules/test_docker_not_command.py

@@ -122,8 +122,8 @@ def test_not_match(script, stderr):
 
 @pytest.mark.usefixtures('docker_help')
 @pytest.mark.parametrize('wrong, fixed', [
-    ('pes', 'ps'),
-    ('tags', 'tag')])
+    ('pes', ['ps', 'push', 'pause']),
+    ('tags', ['tag', 'stats', 'images'])])
 def test_get_new_command(wrong, fixed):
     command = Command('docker {}'.format(wrong), stderr=stderr(wrong))
-    assert get_new_command(command, None) == 'docker {}'.format(fixed)
+    assert get_new_command(command, None) == ['docker {}'.format(x) for x in fixed]

tests/rules/test_git_not_command.py

@@ -50,8 +50,8 @@ def test_match(git_not_command, git_command, git_not_command_one_of_this):
 def test_get_new_command(git_not_command, git_not_command_one_of_this,
                          git_not_command_closest):
     assert get_new_command(Command('git brnch', stderr=git_not_command), None) \
-           == 'git branch'
+           == ['git branch']
     assert get_new_command(Command('git st', stderr=git_not_command_one_of_this),
-                           None) == 'git status'
+                           None) == ['git stats', 'git stash', 'git stage']
     assert get_new_command(Command('git tags', stderr=git_not_command_closest),
-                           None) == 'git tag'
+                           None) == ['git tag', 'git stage']

tests/rules/test_gulp_not_task.py

@@ -25,4 +25,4 @@ def test_get_new_command(mocker):
     mocker.patch('thefuck.rules.gulp_not_task.get_gulp_tasks', return_value=[
         'serve', 'build', 'default'])
     command = Command('gulp srve', stdout('srve'))
-    assert get_new_command(command, None) == 'gulp serve'
+    assert get_new_command(command, None) == ['gulp serve', 'gulp default']

tests/rules/test_heroku_not_command.py

@@ -27,8 +27,8 @@ def test_not_match(script, stderr):
 
 
 @pytest.mark.parametrize('cmd, result', [
-    ('log', 'heroku logs'),
-    ('pge', 'heroku pg')])
+    ('log', ['heroku logs', 'heroku pg']),
+    ('pge', ['heroku pg', 'heroku logs'])])
 def test_get_new_command(cmd, result):
     command = Command('heroku {}'.format(cmd), stderr=suggest_stderr(cmd))
     assert get_new_command(command, None) == result

tests/rules/test_lein_not_task.py

@@ -9,6 +9,7 @@ def is_not_task():
 
 Did you mean this?
          repl
+         jar
 '''
 
 
@@ -19,4 +20,4 @@ def test_match(is_not_task):
 
 def test_get_new_command(is_not_task):
     assert get_new_command(Mock(script='lein rpl --help', stderr=is_not_task),
-                           None) == 'lein repl --help'
+                           None) == ['lein repl --help', 'lein jar --help']

tests/rules/test_man.py

@@ -23,7 +23,7 @@ def test_not_match(command):
 
 
 @pytest.mark.parametrize('command, new_command', [
-    (Command('man read'), 'man 3 read'),
+    (Command('man read'), ['man 3 read', 'man 2 read']),
     (Command('man 2 read'), 'man 3 read'),
     (Command('man 3 read'), 'man 2 read'),
     (Command('man -s2 read'), 'man -s3 read'),

tests/rules/test_no_command.py

@@ -22,8 +22,8 @@ def test_get_new_command():
     assert get_new_command(
         Command(stderr='vom: not found',
                 script='vom file.py'),
-        None) == 'vim file.py'
+        None) == ['vim file.py']
     assert get_new_command(
         Command(stderr='fucck: not found',
                 script='fucck'),
-        Command) == 'fsck'
+        Command) == ['fsck']

tests/rules/test_pacman.py

@@ -7,17 +7,13 @@ from tests.utils import Command
 
 pacman_cmd = getattr(pacman, 'pacman', 'pacman')
 
-PKGFILE_OUTPUT_CONVERT = '''
-extra/imagemagick 6.9.1.0-1\t/usr/bin/convert
-'''
+PKGFILE_OUTPUT_CONVERT = 'extra/imagemagick 6.9.1.0-1\t/usr/bin/convert'
 
-PKGFILE_OUTPUT_VIM = '''
-extra/gvim 7.4.712-1        \t/usr/bin/vim
+PKGFILE_OUTPUT_VIM = '''extra/gvim 7.4.712-1        \t/usr/bin/vim
 extra/gvim-python3 7.4.712-1\t/usr/bin/vim
 extra/vim 7.4.712-1         \t/usr/bin/vim
 extra/vim-minimal 7.4.712-1 \t/usr/bin/vim
-extra/vim-python3 7.4.712-1 \t/usr/bin/vim
-'''
+extra/vim-python3 7.4.712-1 \t/usr/bin/vim'''
 
 
 @pytest.mark.skipif(not getattr(pacman, 'enabled_by_default', True),
@@ -46,22 +42,37 @@ def test_not_match(command):
     assert not match(command, None)
 
 
+sudo_vim_possibilities = ['{} -S extra/gvim && sudo vim',
+                          '{} -S extra/gvim-python3 && sudo vim',
+                          '{} -S extra/vim && sudo vim',
+                          '{} -S extra/vim-minimal && sudo vim',
+                          '{} -S extra/vim-python3 && sudo vim']
+sudo_vim_possibilities = [s.format(pacman_cmd) for s in sudo_vim_possibilities]
+
+vim_possibilities = ['{} -S extra/gvim && vim',
+                     '{} -S extra/gvim-python3 && vim',
+                     '{} -S extra/vim && vim',
+                     '{} -S extra/vim-minimal && vim',
+                     '{} -S extra/vim-python3 && vim']
+vim_possibilities = [s.format(pacman_cmd) for s in vim_possibilities]
+
+
 @pytest.mark.skipif(not getattr(pacman, 'enabled_by_default', True),
                     reason='Skip if pacman is not available')
 @pytest.mark.parametrize('command, new_command', [
-    (Command('vim'), '{} -S extra/gvim && vim'.format(pacman_cmd)),
-    (Command('sudo vim'), '{} -S extra/gvim && sudo vim'.format(pacman_cmd)),
-    (Command('convert'), '{} -S extra/imagemagick && convert'.format(pacman_cmd)),
-    (Command('sudo convert'), '{} -S extra/imagemagick && sudo convert'.format(pacman_cmd))])
+    (Command('vim'), vim_possibilities),
+    (Command('sudo vim'), sudo_vim_possibilities),
+    (Command('convert'), ['{} -S extra/imagemagick && convert'.format(pacman_cmd)]),
+    (Command('sudo convert'), ['{} -S extra/imagemagick && sudo convert'.format(pacman_cmd)])])
 def test_get_new_command(command, new_command, mocker):
     assert get_new_command(command, None) == new_command
 
 
 @pytest.mark.parametrize('command, new_command, return_value', [
-    (Command('vim'), '{} -S extra/gvim && vim'.format(pacman_cmd), PKGFILE_OUTPUT_VIM),
-    (Command('sudo vim'), '{} -S extra/gvim && sudo vim'.format(pacman_cmd), PKGFILE_OUTPUT_VIM),
-    (Command('convert'), '{} -S extra/imagemagick && convert'.format(pacman_cmd), PKGFILE_OUTPUT_CONVERT),
-    (Command('sudo convert'), '{} -S extra/imagemagick && sudo convert'.format(pacman_cmd), PKGFILE_OUTPUT_CONVERT)])
+    (Command('vim'), vim_possibilities, PKGFILE_OUTPUT_VIM),
+    (Command('sudo vim'), sudo_vim_possibilities, PKGFILE_OUTPUT_VIM),
+    (Command('convert'), ['{} -S extra/imagemagick && convert'.format(pacman_cmd)], PKGFILE_OUTPUT_CONVERT),
+    (Command('sudo convert'), ['{} -S extra/imagemagick && sudo convert'.format(pacman_cmd)], PKGFILE_OUTPUT_CONVERT)])
 @patch('thefuck.rules.pacman.subprocess')
 @patch.multiple(pacman, create=True, pacman=pacman_cmd)
 def test_get_new_command_mocked(subp_mock, command, new_command, return_value):

tests/rules/test_sudo.py

@@ -21,5 +21,9 @@ def test_not_match():
     assert not match(Command(), None)
 
 
-def test_get_new_command():
-    assert get_new_command(Command('ls'), None) == 'sudo ls'
+@pytest.mark.parametrize('before, after', [
+    ('ls', 'sudo ls'),
+    ('echo a > b', 'sudo sh -c "echo a > b"'),
+    ('echo "a" >> b', 'sudo sh -c "echo \\"a\\" >> b"')])
+def test_get_new_command(before, after):
+    assert get_new_command(Command(before), None) == after

tests/rules/test_tmux.py

@@ -16,4 +16,4 @@ def test_match(tmux_ambiguous):
 
 def test_get_new_command(tmux_ambiguous):
     assert get_new_command(Command('tmux list', stderr=tmux_ambiguous), None)\
-        == 'tmux list-keys'
+        == ['tmux list-keys', 'tmux list-panes', 'tmux list-windows']

tests/rules/test_tsuru_not_command.py

@@ -61,30 +61,30 @@ def test_not_match(command):
     assert not match(command, None)
 
 
-@pytest.mark.parametrize('command, new_command', [
+@pytest.mark.parametrize('command, new_commands', [
     (Command('tsuru log', stderr=(
         'tsuru: "log" is not a tsuru command. See "tsuru help".\n'
         '\nDid you mean?\n'
         '\tapp-log\n'
         '\tlogin\n'
         '\tlogout\n'
-    )), 'tsuru login'),
+    )), ['tsuru login', 'tsuru logout', 'tsuru app-log']),
     (Command('tsuru app-l', stderr=(
         'tsuru: "app-l" is not a tsuru command. See "tsuru help".\n'
         '\nDid you mean?\n'
         '\tapp-list\n'
         '\tapp-log\n'
-    )), 'tsuru app-log'),
+    )), ['tsuru app-log', 'tsuru app-list']),
     (Command('tsuru user-list', stderr=(
         'tsuru: "user-list" is not a tsuru command. See "tsuru help".\n'
         '\nDid you mean?\n'
         '\tteam-user-list\n'
-    )), 'tsuru team-user-list'),
+    )), ['tsuru team-user-list']),
     (Command('tsuru targetlist', stderr=(
         'tsuru: "targetlist" is not a tsuru command. See "tsuru help".\n'
         '\nDid you mean?\n'
         '\ttarget-list\n'
-    )), 'tsuru target-list'),
+    )), ['tsuru target-list']),
 ])
-def test_get_new_command(command, new_command):
-    assert get_new_command(command, None) == new_command
+def test_get_new_command(command, new_commands):
+    assert get_new_command(command, None) == new_commands

tests/rules/test_whois.py

@@ -6,7 +6,7 @@ from tests.utils import Command
 @pytest.mark.parametrize('command', [
     Command(script='whois https://en.wikipedia.org/wiki/Main_Page'),
     Command(script='whois https://en.wikipedia.org/'),
-    Command(script='whois en.wikipedia.org')])
+    Command(script='whois meta.unix.stackexchange.com')])
 def test_match(command):
     assert match(command, None)
 
@@ -15,9 +15,12 @@ def test_not_match():
     assert not match(Command(script='whois'), None)
 
 
+# `whois com` actually makes sense
 @pytest.mark.parametrize('command, new_command', [
     (Command('whois https://en.wikipedia.org/wiki/Main_Page'), 'whois en.wikipedia.org'),
     (Command('whois https://en.wikipedia.org/'), 'whois en.wikipedia.org'),
-    (Command('whois en.wikipedia.org'), 'whois wikipedia.org')])
+    (Command('whois meta.unix.stackexchange.com'), ['whois unix.stackexchange.com',
+                                                    'whois stackexchange.com',
+                                                    'whois com'])])
 def test_get_new_command(command, new_command):
     assert get_new_command(command, None) == new_command

tests/test_corrector.py

@@ -0,0 +1,97 @@
+import pytest
+from pathlib import PosixPath, Path
+from mock import Mock
+from thefuck import corrector, conf, types
+from tests.utils import Rule, Command, CorrectedCommand
+from thefuck.corrector import make_corrected_commands, get_corrected_commands, remove_duplicates
+
+
+def test_load_rule(mocker):
+    match = object()
+    get_new_command = object()
+    load_source = mocker.patch(
+        'thefuck.corrector.load_source',
+        return_value=Mock(match=match,
+                          get_new_command=get_new_command,
+                          enabled_by_default=True,
+                          priority=900,
+                          requires_output=True))
+    assert corrector.load_rule(Path('/rules/bash.py'), settings=Mock(priority={})) \
+           == Rule('bash', match, get_new_command, priority=900)
+    load_source.assert_called_once_with('bash', '/rules/bash.py')
+
+
+class TestGetRules(object):
+    @pytest.fixture(autouse=True)
+    def glob(self, mocker):
+        return mocker.patch('thefuck.corrector.Path.glob', return_value=[])
+
+    def _compare_names(self, rules, names):
+        return [r.name for r in rules] == names
+
+    @pytest.mark.parametrize('conf_rules, rules', [
+        (conf.DEFAULT_RULES, ['bash', 'lisp', 'bash', 'lisp']),
+        (types.RulesNamesList(['bash']), ['bash', 'bash'])])
+    def test_get(self, monkeypatch, glob, conf_rules, rules):
+        glob.return_value = [PosixPath('bash.py'), PosixPath('lisp.py')]
+        monkeypatch.setattr('thefuck.corrector.load_source',
+                            lambda x, _: Rule(x))
+        assert self._compare_names(
+            corrector.get_rules(Path('~'), Mock(rules=conf_rules, priority={})),
+            rules)
+
+
+class TestGetMatchedRules(object):
+    def test_no_match(self):
+        assert list(corrector.get_matched_rules(
+            Command('ls'), [Rule('', lambda *_: False)],
+            Mock(no_colors=True))) == []
+
+    def test_match(self):
+        rule = Rule('', lambda x, _: x.script == 'cd ..')
+        assert list(corrector.get_matched_rules(
+            Command('cd ..'), [rule], Mock(no_colors=True))) == [rule]
+
+    def test_when_rule_failed(self, capsys):
+        all(corrector.get_matched_rules(
+            Command('ls'), [Rule('test', Mock(side_effect=OSError('Denied')),
+                                 requires_output=False)],
+            Mock(no_colors=True, debug=False)))
+        assert capsys.readouterr()[1].split('\n')[0] == '[WARN] Rule test:'
+
+
+class TestGetCorrectedCommands(object):
+    def test_with_rule_returns_list(self):
+        rule = Rule(get_new_command=lambda x, _: [x.script + '!', x.script + '@'],
+                    priority=100)
+        assert list(make_corrected_commands(Command(script='test'), [rule], None)) \
+               == [CorrectedCommand(script='test!', priority=100),
+                   CorrectedCommand(script='test@', priority=200)]
+
+    def test_with_rule_returns_command(self):
+        rule = Rule(get_new_command=lambda x, _: x.script + '!',
+                    priority=100)
+        assert list(make_corrected_commands(Command(script='test'), [rule], None)) \
+               == [CorrectedCommand(script='test!', priority=100)]
+
+
+def test_remove_duplicates():
+    side_effect = lambda *_: None
+    assert set(remove_duplicates([CorrectedCommand('ls', priority=100),
+                                  CorrectedCommand('ls', priority=200),
+                                  CorrectedCommand('ls', side_effect, 300)])) \
+           == {CorrectedCommand('ls', priority=100),
+               CorrectedCommand('ls', side_effect, 300)}
+
+
+def test_get_corrected_commands(mocker):
+    command = Command('test', 'test', 'test')
+    rules = [Rule(match=lambda *_: False),
+             Rule(match=lambda *_: True,
+                  get_new_command=lambda x, _: x.script + '!', priority=100),
+             Rule(match=lambda *_: True,
+                  get_new_command=lambda x, _: [x.script + '@', x.script + ';'],
+                  priority=60)]
+    mocker.patch('thefuck.corrector.get_rules', return_value=rules)
+    assert [cmd.script for cmd in get_corrected_commands(command, None, Mock(debug=False))] \
+           == ['test@', 'test!', 'test;']

tests/test_main.py

@@ -1,61 +1,8 @@
 import pytest
 from subprocess import PIPE
-from pathlib import PosixPath, Path
 from mock import Mock
-from thefuck import main, conf, types
-from tests.utils import Rule, Command
-
-
-def test_load_rule(mocker):
-    match = object()
-    get_new_command = object()
-    load_source = mocker.patch(
-        'thefuck.main.load_source',
-        return_value=Mock(match=match,
-                          get_new_command=get_new_command,
-                          enabled_by_default=True,
-                          priority=900,
-                          requires_output=True))
-    assert main.load_rule(Path('/rules/bash.py')) \
-           == Rule('bash', match, get_new_command, priority=900)
-    load_source.assert_called_once_with('bash', '/rules/bash.py')
-
-
-class TestGetRules(object):
-    @pytest.fixture(autouse=True)
-    def glob(self, mocker):
-        return mocker.patch('thefuck.main.Path.glob', return_value=[])
-
-    def _compare_names(self, rules, names):
-        return [r.name for r in rules] == names
-
-    @pytest.mark.parametrize('conf_rules, rules', [
-        (conf.DEFAULT_RULES, ['bash', 'lisp', 'bash', 'lisp']),
-        (types.RulesNamesList(['bash']), ['bash', 'bash'])])
-    def test_get(self, monkeypatch, glob, conf_rules, rules):
-        glob.return_value = [PosixPath('bash.py'), PosixPath('lisp.py')]
-        monkeypatch.setattr('thefuck.main.load_source',
-                            lambda x, _: Rule(x))
-        assert self._compare_names(
-            main.get_rules(Path('~'), Mock(rules=conf_rules, priority={})),
-            rules)
-
-    @pytest.mark.parametrize('priority, unordered, ordered', [
-        ({},
-         [Rule('bash', priority=100), Rule('python', priority=5)],
-         ['python', 'bash']),
-        ({},
-         [Rule('lisp', priority=9999), Rule('c', priority=conf.DEFAULT_PRIORITY)],
-         ['c', 'lisp']),
-        ({'python': 9999},
-         [Rule('bash', priority=100), Rule('python', priority=5)],
-         ['bash', 'python'])])
-    def test_ordered_by_priority(self, monkeypatch, priority, unordered, ordered):
-        monkeypatch.setattr('thefuck.main._get_loaded_rules',
-                            lambda *_: unordered)
-        assert self._compare_names(
-            main.get_rules(Path('~'), Mock(priority=priority)),
-            ordered)
+from thefuck import main
+from tests.utils import Command
 
 
 class TestGetCommand(object):
@@ -79,7 +26,7 @@ class TestGetCommand(object):
 
     def test_get_command_calls(self, Popen):
         assert main.get_command(Mock(env={}),
-            ['thefuck', 'apt-get', 'search', 'vim']) \
+                                ['thefuck', 'apt-get', 'search', 'vim']) \
                == Command('apt-get search vim', 'stdout', 'stderr')
         Popen.assert_called_once_with('apt-get search vim',
                                       shell=True,
@@ -95,80 +42,3 @@ class TestGetCommand(object):
             assert main.get_command(Mock(env={}), args).script == result
         else:
             assert main.get_command(Mock(env={}), args) is None
-
-
-class TestGetMatchedRule(object):
-    def test_no_match(self):
-        assert main.get_matched_rule(
-            Command('ls'), [Rule('', lambda *_: False)],
-            Mock(no_colors=True)) is None
-
-    def test_match(self):
-        rule = Rule('', lambda x, _: x.script == 'cd ..')
-        assert main.get_matched_rule(
-            Command('cd ..'), [rule], Mock(no_colors=True)) == rule
-
-    def test_when_rule_failed(self, capsys):
-        main.get_matched_rule(
-            Command('ls'), [Rule('test', Mock(side_effect=OSError('Denied')))],
-            Mock(no_colors=True, debug=False))
-        assert capsys.readouterr()[1].split('\n')[0] == '[WARN] Rule test:'
-
-
-class TestRunRule(object):
-    @pytest.fixture(autouse=True)
-    def confirm(self, mocker):
-        return mocker.patch('thefuck.main.confirm', return_value=True)
-
-    def test_run_rule(self, capsys):
-        main.run_rule(Rule(get_new_command=lambda *_: 'new-command'),
-                      Command(), None)
-        assert capsys.readouterr() == ('new-command\n', '')
-
-    def test_run_rule_with_side_effect(self, capsys):
-        side_effect = Mock()
-        settings = Mock(debug=False)
-        command = Command()
-        main.run_rule(Rule(get_new_command=lambda *_: 'new-command',
-                           side_effect=side_effect),
-                      command, settings)
-        assert capsys.readouterr() == ('new-command\n', '')
-        side_effect.assert_called_once_with(command, settings)
-
-    def test_when_not_comfirmed(self, capsys, confirm):
-        confirm.return_value = False
-        main.run_rule(Rule(get_new_command=lambda *_: 'new-command'),
-                      Command(), None)
-        assert capsys.readouterr() == ('', '')
-
-
-class TestConfirm(object):
-    @pytest.fixture
-    def stdin(self, mocker):
-        return mocker.patch('sys.stdin.read', return_value='\n')
-
-    def test_when_not_required(self, capsys):
-        assert main.confirm('command', None, Mock(require_confirmation=False))
-        assert capsys.readouterr() == ('', 'command\n')
-
-    def test_with_side_effect_and_without_confirmation(self, capsys):
-        assert main.confirm('command', Mock(), Mock(require_confirmation=False))
-        assert capsys.readouterr() == ('', 'command (+side effect)\n')
-
-    # `stdin` fixture should be applied after `capsys`
-    def test_when_confirmation_required_and_confirmed(self, capsys, stdin):
-        assert main.confirm('command', None, Mock(require_confirmation=True,
-                                                  no_colors=True))
-        assert capsys.readouterr() == ('', 'command [enter/ctrl+c]')
-
-    # `stdin` fixture should be applied after `capsys`
-    def test_when_confirmation_required_and_confirmed_with_side_effect(self, capsys, stdin):
-        assert main.confirm('command', Mock(), Mock(require_confirmation=True,
-                                                    no_colors=True))
-        assert capsys.readouterr() == ('', 'command (+side effect) [enter/ctrl+c]')
-
-    def test_when_confirmation_required_and_aborted(self, capsys, stdin):
-        stdin.side_effect = KeyboardInterrupt
-        assert not main.confirm('command', None, Mock(require_confirmation=True,
-                                                      no_colors=True))
-        assert capsys.readouterr() == ('', 'command [enter/ctrl+c]Aborted\n')

tests/test_ui.py

@@ -0,0 +1,124 @@
+# -*- encoding: utf-8 -*-
+
+from mock import Mock
+import pytest
+from itertools import islice
+from thefuck import ui
+from thefuck.types import CorrectedCommand
+
+
+@pytest.fixture
+def patch_getch(monkeypatch):
+    def patch(vals):
+        def getch():
+            for val in vals:
+                if val == KeyboardInterrupt:
+                    raise val
+                else:
+                    yield val
+
+        getch_gen = getch()
+        monkeypatch.setattr('thefuck.ui.getch', lambda: next(getch_gen))
+
+    return patch
+
+
+def test_read_actions(patch_getch):
+    patch_getch([  # Enter:
+                   '\n',
+                   # Enter:
+                   '\r',
+                   # Ignored:
+                   'x', 'y',
+                   # Up:
+                   '\x1b', '[', 'A',
+                   # Down:
+                   '\x1b', '[', 'B',
+                   # Ctrl+C:
+                   KeyboardInterrupt], )
+    assert list(islice(ui.read_actions(), 5)) \
+           == [ui.SELECT, ui.SELECT, ui.PREVIOUS, ui.NEXT, ui.ABORT]
+
+
+def test_command_selector():
+    selector = ui.CommandSelector([1, 2, 3])
+    assert selector.value == 1
+    changes = []
+    selector.on_change(changes.append)
+    selector.next()
+    assert selector.value == 2
+    selector.next()
+    assert selector.value == 3
+    selector.next()
+    assert selector.value == 1
+    selector.previous()
+    assert selector.value == 3
+    assert changes == [1, 2, 3, 1, 3]
+
+
+class TestSelectCommand(object):
+    @pytest.fixture
+    def commands_with_side_effect(self):
+        return [CorrectedCommand('ls', lambda *_: None, 100),
+                CorrectedCommand('cd', lambda *_: None, 100)]
+
+    @pytest.fixture
+    def commands(self):
+        return [CorrectedCommand('ls', None, 100),
+                CorrectedCommand('cd', None, 100)]
+
+    def test_without_commands(self, capsys):
+        assert ui.select_command([], Mock(debug=False, no_color=True)) is None
+        assert capsys.readouterr() == ('', 'No fucks given\n')
+
+    def test_without_confirmation(self, capsys, commands):
+        assert ui.select_command(commands,
+                                 Mock(debug=False, no_color=True,
+                                      require_confirmation=False)) == commands[0]
+        assert capsys.readouterr() == ('', 'ls\n')
+
+    def test_without_confirmation_with_side_effects(self, capsys,
+                                                    commands_with_side_effect):
+        assert ui.select_command(commands_with_side_effect,
+                                 Mock(debug=False, no_color=True,
+                                      require_confirmation=False)) \
+               == commands_with_side_effect[0]
+        assert capsys.readouterr() == ('', 'ls (+side effect)\n')
+
+    def test_with_confirmation(self, capsys, patch_getch, commands):
+        patch_getch(['\n'])
+        assert ui.select_command(commands,
+                                 Mock(debug=False, no_color=True,
+                                      require_confirmation=True)) == commands[0]
+        assert capsys.readouterr() == ('', u'\x1b[1K\rls [enter/↑/↓/ctrl+c]\n')
+
+    def test_with_confirmation_one_match(self, capsys, patch_getch, commands):
+        patch_getch(['\n'])
+        assert ui.select_command((commands[0],),
+                                 Mock(debug=False, no_color=True,
+                                      require_confirmation=True)) == commands[0]
+        assert capsys.readouterr() == ('', u'\x1b[1K\rls [enter/ctrl+c]\n')
+
+    def test_with_confirmation_abort(self, capsys, patch_getch, commands):
+        patch_getch([KeyboardInterrupt])
+        assert ui.select_command(commands,
+                                 Mock(debug=False, no_color=True,
+                                      require_confirmation=True)) is None
+        assert capsys.readouterr() == ('', u'\x1b[1K\rls [enter/↑/↓/ctrl+c]\nAborted\n')
+
+    def test_with_confirmation_with_side_effct(self, capsys, patch_getch,
+                                               commands_with_side_effect):
+        patch_getch(['\n'])
+        assert ui.select_command(commands_with_side_effect,
+                                 Mock(debug=False, no_color=True,
+                                      require_confirmation=True))\
+               == commands_with_side_effect[0]
+        assert capsys.readouterr() == ('', u'\x1b[1K\rls (+side effect) [enter/↑/↓/ctrl+c]\n')
+
+    def test_with_confirmation_select_second(self, capsys, patch_getch, commands):
+        patch_getch(['\x1b', '[', 'B', '\n'])
+        assert ui.select_command(commands,
+                                 Mock(debug=False, no_color=True,
+                                      require_confirmation=True)) == commands[1]
+        assert capsys.readouterr() == (
+            '', u'\x1b[1K\rls [enter/↑/↓/ctrl+c]\x1b[1K\rcd [enter/↑/↓/ctrl+c]\n')

tests/test_utils.py

@@ -18,6 +18,7 @@ def test_wrap_settings(override, old, new):
 @pytest.mark.parametrize('return_value, command, called, result', [
     ('ls -lah', 'sudo ls', 'ls', 'sudo ls -lah'),
     ('ls -lah', 'ls', 'ls', 'ls -lah'),
+    (['ls -lah'], 'sudo ls', 'ls', ['sudo ls -lah']),
     (True, 'sudo ls', 'ls', True),
     (True, 'ls', 'ls', True),
     (False, 'sudo ls', 'ls', False),

tests/utils.py

@@ -15,3 +15,7 @@ def Rule(name='', match=lambda *_: True,
     return types.Rule(name, match, get_new_command,
                       enabled_by_default, side_effect,
                       priority, requires_output)
+
+
+def CorrectedCommand(script='', side_effect=None, priority=DEFAULT_PRIORITY):
+    return types.CorrectedCommand(script, side_effect, priority)

thefuck/corrector.py

@@ -0,0 +1,87 @@
+import sys
+from imp import load_source
+from pathlib import Path
+from . import conf, types, logs
+from .utils import eager
+
+
+def load_rule(rule, settings):
+    """Imports rule module and returns it."""
+    name = rule.name[:-3]
+    rule_module = load_source(name, str(rule))
+    priority = getattr(rule_module, 'priority', conf.DEFAULT_PRIORITY)
+    return types.Rule(name, rule_module.match,
+                      rule_module.get_new_command,
+                      getattr(rule_module, 'enabled_by_default', True),
+                      getattr(rule_module, 'side_effect', None),
+                      settings.priority.get(name, priority),
+                      getattr(rule_module, 'requires_output', True))
+
+
+def get_loaded_rules(rules, settings):
+    """Yields all available rules."""
+    for rule in rules:
+        if rule.name != '__init__.py':
+            loaded_rule = load_rule(rule, settings)
+            if loaded_rule in settings.rules:
+                yield loaded_rule
+
+
+@eager
+def get_rules(user_dir, settings):
+    """Returns all enabled rules."""
+    bundled = Path(__file__).parent \
+        .joinpath('rules') \
+        .glob('*.py')
+    user = user_dir.joinpath('rules').glob('*.py')
+    return get_loaded_rules(sorted(bundled) + sorted(user), settings)
+
+
+@eager
+def get_matched_rules(command, rules, settings):
+    """Returns first matched rule for command."""
+    script_only = command.stdout is None and command.stderr is None
+
+    for rule in rules:
+        if script_only and rule.requires_output:
+            continue
+
+        try:
+            with logs.debug_time(u'Trying rule: {};'.format(rule.name),
+                                 settings):
+                if rule.match(command, settings):
+                    yield rule
+        except Exception:
+            logs.rule_failed(rule, sys.exc_info(), settings)
+
+
+def make_corrected_commands(command, rules, settings):
+    for rule in rules:
+        new_commands = rule.get_new_command(command, settings)
+        if not isinstance(new_commands, list):
+            new_commands = [new_commands]
+        for n, new_command in enumerate(new_commands):
+            yield types.CorrectedCommand(script=new_command,
+                                         side_effect=rule.side_effect,
+                                         priority=(n + 1) * rule.priority)
+
+
+def remove_duplicates(corrected_commands):
+    commands = {(command.script, command.side_effect): command
+                for command in sorted(corrected_commands,
+                                      key=lambda command: -command.priority)}
+    return commands.values()
+
+
+def get_corrected_commands(command, user_dir, settings):
+    rules = get_rules(user_dir, settings)
+    logs.debug(
+        u'Loaded rules: {}'.format(', '.join(rule.name for rule in rules)),
+        settings)
+    matched = get_matched_rules(command, rules, settings)
+    logs.debug(
+        u'Matched rules: {}'.format(', '.join(rule.name for rule in matched)),
+        settings)
+    corrected_commands = make_corrected_commands(command, matched, settings)
+    return sorted(remove_duplicates(corrected_commands),
+                  key=lambda corrected_command: corrected_command.priority)

thefuck/logs.py

@@ -1,3 +1,5 @@
+# -*- encoding: utf-8 -*-
+
 from contextlib import contextmanager
 from datetime import datetime
 import sys
@@ -28,27 +30,6 @@ def rule_failed(rule, exc_info, settings):
     exception('Rule {}'.format(rule.name), exc_info, settings)
 
 
-def show_command(new_command, side_effect, settings):
-    sys.stderr.write('{bold}{command}{reset}{side_effect}\n'.format(
-        command=new_command,
-        side_effect=' (+side effect)' if side_effect else '',
-        bold=color(colorama.Style.BRIGHT, settings),
-        reset=color(colorama.Style.RESET_ALL, settings)))
-
-
-def confirm_command(new_command, side_effect, settings):
-    sys.stderr.write(
-        '{bold}{command}{reset}{side_effect} '
-        '[{green}enter{reset}/{red}ctrl+c{reset}]'.format(
-            command=new_command,
-            side_effect=' (+side effect)' if side_effect else '',
-            bold=color(colorama.Style.BRIGHT, settings),
-            green=color(colorama.Fore.GREEN, settings),
-            red=color(colorama.Fore.RED, settings),
-            reset=color(colorama.Style.RESET_ALL, settings)))
-    sys.stderr.flush()
-
-
 def failed(msg, settings):
     sys.stderr.write('{red}{msg}{reset}\n'.format(
         msg=msg,
@@ -56,6 +37,33 @@ def failed(msg, settings):
         reset=color(colorama.Style.RESET_ALL, settings)))
 
 
+def show_corrected_command(corrected_command, settings):
+    sys.stderr.write('{bold}{script}{reset}{side_effect}\n'.format(
+        script=corrected_command.script,
+        side_effect=' (+side effect)' if corrected_command.side_effect else '',
+        bold=color(colorama.Style.BRIGHT, settings),
+        reset=color(colorama.Style.RESET_ALL, settings)))
+
+
+def confirm_text(corrected_command, multiple_cmds, settings):
+    if multiple_cmds:
+        arrows = '{blue}↑{reset}/{blue}↓{reset}/'
+    else:
+        arrows = ''
+
+    sys.stderr.write(
+        ('{clear}{bold}{script}{reset}{side_effect} '
+         '[{green}enter{reset}/' + arrows + '{red}ctrl+c{reset}]').format(
+            script=corrected_command.script,
+            side_effect=' (+side effect)' if corrected_command.side_effect else '',
+            clear='\033[1K\r',
+            bold=color(colorama.Style.BRIGHT, settings),
+            green=color(colorama.Fore.GREEN, settings),
+            red=color(colorama.Fore.RED, settings),
+            reset=color(colorama.Style.RESET_ALL, settings),
+            blue=color(colorama.Fore.BLUE, settings)))
+
+
 def debug(msg, settings):
     if settings.debug:
         sys.stderr.write(u'{blue}{bold}DEBUG:{reset} {msg}\n'.format(
@@ -71,4 +79,4 @@ def debug_time(msg, settings):
     try:
         yield
     finally:
-        debug('{} took: {}'.format(msg, datetime.now() - started), settings)
+        debug(u'{} took: {}'.format(msg, datetime.now() - started), settings)

thefuck/main.py

@@ -1,7 +1,9 @@
-from imp import load_source
+from argparse import ArgumentParser
+from warnings import warn
 from pathlib import Path
 from os.path import expanduser
 from pprint import pformat
+import pkg_resources
 from subprocess import Popen, PIPE
 import os
 import sys
@@ -9,6 +11,8 @@ from psutil import Process, TimeoutExpired
 import colorama
 import six
 from . import logs, conf, types, shells
+from .corrector import get_corrected_commands
+from .ui import select_command
 
 
 def setup_user_dir():
@@ -21,37 +25,6 @@ def setup_user_dir():
     return user_dir
 
 
-def load_rule(rule):
-    """Imports rule module and returns it."""
-    rule_module = load_source(rule.name[:-3], str(rule))
-    return types.Rule(rule.name[:-3], rule_module.match,
-                      rule_module.get_new_command,
-                      getattr(rule_module, 'enabled_by_default', True),
-                      getattr(rule_module, 'side_effect', None),
-                      getattr(rule_module, 'priority', conf.DEFAULT_PRIORITY),
-                      getattr(rule_module, 'requires_output', True))
-
-
-def _get_loaded_rules(rules, settings):
-    """Yields all available rules."""
-    for rule in rules:
-        if rule.name != '__init__.py':
-            loaded_rule = load_rule(rule)
-            if loaded_rule in settings.rules:
-                yield loaded_rule
-
-
-def get_rules(user_dir, settings):
-    """Returns all enabled rules."""
-    bundled = Path(__file__).parent \
-        .joinpath('rules') \
-        .glob('*.py')
-    user = user_dir.joinpath('rules').glob('*.py')
-    rules = _get_loaded_rules(sorted(bundled) + sorted(user), settings)
-    return sorted(rules, key=lambda rule: settings.priority.get(
-        rule.name, rule.priority))
-
-
 def wait_output(settings, popen):
     """Returns `True` if we can get output of the command in the
     `wait_command` time.
@@ -100,51 +73,17 @@ def get_command(settings, args):
             return types.Command(script, None, None)
 
 
-def get_matched_rule(command, rules, settings):
-    """Returns first matched rule for command."""
-    script_only = command.stdout is None and command.stderr is None
-
-    for rule in rules:
-        if script_only and rule.requires_output:
-            continue
-
-        try:
-            with logs.debug_time(u'Trying rule: {};'.format(rule.name),
-                                 settings):
-                if rule.match(command, settings):
-                    return rule
-        except Exception:
-            logs.rule_failed(rule, sys.exc_info(), settings)
-
-
-def confirm(new_command, side_effect, settings):
-    """Returns `True` when running of new command confirmed."""
-    if not settings.require_confirmation:
-        logs.show_command(new_command, side_effect, settings)
-        return True
-
-    logs.confirm_command(new_command, side_effect, settings)
-    try:
-        sys.stdin.read(1)
-        return True
-    except KeyboardInterrupt:
-        logs.failed('Aborted', settings)
-        return False
-
-
-def run_rule(rule, command, settings):
+def run_command(command, settings):
     """Runs command from rule for passed command."""
-    new_command = shells.to_shell(rule.get_new_command(command, settings))
-    if confirm(new_command, rule.side_effect, settings):
-        if rule.side_effect:
-            rule.side_effect(command, settings)
-        shells.put_to_history(new_command)
-        print(new_command)
+    if command.side_effect:
+        command.side_effect(command, settings)
+    shells.put_to_history(command.script)
+    print(command.script)
 
 
 # Entry points:
 
-def main():
+def fix_command():
     colorama.init()
     user_dir = setup_user_dir()
     settings = conf.get_settings(user_dir)
@@ -152,22 +91,41 @@ def main():
         logs.debug(u'Run with settings: {}'.format(pformat(settings)), settings)
 
         command = get_command(settings, sys.argv)
-        rules = get_rules(user_dir, settings)
-        logs.debug(
-            u'Loaded rules: {}'.format(', '.join(rule.name for rule in rules)),
-            settings)
-
-        matched_rule = get_matched_rule(command, rules, settings)
-        if matched_rule:
-            logs.debug(u'Matched rule: {}'.format(matched_rule.name), settings)
-            run_rule(matched_rule, command, settings)
-            return
-
-        logs.failed('No fuck given', settings)
+        corrected_commands = get_corrected_commands(command, user_dir, settings)
+        selected_command = select_command(corrected_commands, settings)
+        if selected_command:
+            run_command(selected_command, settings)
 
 
-def print_alias():
+def print_alias(entry_point=True):
+    if entry_point:
+        warn('`thefuck-alias` is deprecated, us `thefuck --alias` instead.')
+        position = 1
+    else:
+        position = 2
+
     alias = shells.thefuck_alias()
-    if len(sys.argv) > 1:
-        alias = sys.argv[1]
+    if len(sys.argv) > position:
+        alias = sys.argv[position]
     print(shells.app_alias(alias))
+
+
+def main():
+    parser = ArgumentParser(prog='The Fuck')
+    parser.add_argument('-v', '--version',
+                        action='version',
+                        version='%(prog)s {}'.format(
+                            pkg_resources.require('thefuck')[0].version))
+    parser.add_argument('-a', '--alias',
+                        action='store_true',
+                        help='[custom-alias-name] prints alias for current shell')
+    parser.add_argument('command',
+                        nargs='*',
+                        help='command that should be fixed')
+    known_args = parser.parse_args(sys.argv[1:2])
+    if known_args.alias:
+        print_alias(False)
+    elif known_args.command:
+        fix_command()
+    else:
+        parser.print_usage()

thefuck/rules/brew_unknown_command.py

@@ -1,7 +1,7 @@
 import os
 import re
 import subprocess
-from thefuck.utils import get_closest, replace_argument
+from thefuck.utils import get_closest, replace_command
 
 BREW_CMD_PATH = '/Library/Homebrew/cmd'
 TAP_PATH = '/Library/Taps'
@@ -77,10 +77,6 @@ if brew_path_prefix:
         pass
 
 
-def _get_similar_command(command):
-    return get_closest(command, brew_commands)
-
-
 def match(command, settings):
     is_proper_command = ('brew' in command.script and
                          'Unknown command' in command.stderr)
@@ -89,7 +85,7 @@ def match(command, settings):
     if is_proper_command:
         broken_cmd = re.findall(r'Error: Unknown command: ([a-z]+)',
                                 command.stderr)[0]
-        has_possible_commands = bool(_get_similar_command(broken_cmd))
+        has_possible_commands = bool(get_closest(broken_cmd, brew_commands))
 
     return has_possible_commands
 
@@ -97,6 +93,4 @@ def match(command, settings):
 def get_new_command(command, settings):
     broken_cmd = re.findall(r'Error: Unknown command: ([a-z]+)',
                             command.stderr)[0]
-    new_cmd = _get_similar_command(broken_cmd)
-
-    return replace_argument(command.script, broken_cmd, new_cmd)
+    return replace_command(command, broken_cmd, brew_commands)

thefuck/rules/docker_not_command.py

@@ -1,7 +1,7 @@
 from itertools import dropwhile, takewhile, islice
 import re
 import subprocess
-from thefuck.utils import get_closest, sudo_support, replace_argument
+from thefuck.utils import get_closest, sudo_support, replace_argument, replace_command
 
 
 @sudo_support
@@ -23,5 +23,4 @@ def get_docker_commands():
 def get_new_command(command, settings):
     wrong_command = re.findall(
         r"docker: '(\w+)' is not a docker command.", command.stderr)[0]
-    fixed_command = get_closest(wrong_command, get_docker_commands())
-    return replace_argument(command.script, wrong_command, fixed_command)
+    return replace_command(command, wrong_command, get_docker_commands())

thefuck/rules/git_not_command.py

@@ -1,6 +1,6 @@
 import re
-from thefuck.utils import (get_closest, git_support, replace_argument,
-                           get_all_matched_commands)
+from thefuck.utils import (git_support,
+                           get_all_matched_commands, replace_command)
 
 
 @git_support
@@ -13,7 +13,5 @@ def match(command, settings):
 def get_new_command(command, settings):
     broken_cmd = re.findall(r"git: '([^']*)' is not a git command",
                             command.stderr)[0]
-    new_cmd = get_closest(broken_cmd,
-                          get_all_matched_commands(command.stderr))
-    return replace_argument(command.script, broken_cmd, new_cmd)
-
+    matched = get_all_matched_commands(command.stderr)
+    return replace_command(command, broken_cmd, matched)

thefuck/rules/gulp_not_task.py

@@ -1,6 +1,6 @@
 import re
 import subprocess
-from thefuck.utils import get_closest, replace_argument
+from thefuck.utils import replace_command
 
 
 def match(command, script):
@@ -18,5 +18,4 @@ def get_gulp_tasks():
 def get_new_command(command, script):
     wrong_task = re.findall(r"Task '(\w+)' is not in your gulpfile",
                             command.stdout)[0]
-    fixed_task = get_closest(wrong_task, get_gulp_tasks())
-    return replace_argument(command.script, wrong_task, fixed_task)
+    return replace_command(command, wrong_task, get_gulp_tasks())

thefuck/rules/heroku_not_command.py

@@ -1,5 +1,5 @@
 import re
-from thefuck.utils import get_closest, replace_argument
+from thefuck.utils import replace_command
 
 
 def match(command, settings):
@@ -16,5 +16,4 @@ def _get_suggests(stderr):
 
 def get_new_command(command, settings):
     wrong = re.findall(r'`(\w+)` is not a heroku command', command.stderr)[0]
-    correct = get_closest(wrong, _get_suggests(command.stderr))
-    return replace_argument(command.script, wrong, correct)
+    return replace_command(command, wrong, _get_suggests(command.stderr))

thefuck/rules/lein_not_task.py

@@ -1,5 +1,6 @@
 import re
-from thefuck.utils import sudo_support, replace_argument
+from thefuck.utils import sudo_support,\
+    replace_command, get_all_matched_commands
 
 
 @sudo_support
@@ -13,6 +14,5 @@ def match(command, settings):
 def get_new_command(command, settings):
     broken_cmd = re.findall(r"'([^']*)' is not a task",
                             command.stderr)[0]
-    new_cmd = re.findall(r'Did you mean this\?\n\s*([^\n]*)',
-                         command.stderr)[0]
-    return replace_argument(command.script, broken_cmd, new_cmd)
+    new_cmds = get_all_matched_commands(command.stderr, 'Did you mean this?')
+    return replace_command(command, broken_cmd, new_cmds)

thefuck/rules/man.py

@@ -8,6 +8,10 @@ def get_new_command(command, settings):
     if '2' in command.script:
         return command.script.replace("2", "3")
 
-    split_cmd = command.script.split()
-    split_cmd.insert(1, ' 3 ')
-    return "".join(split_cmd)
+    split_cmd2 = command.script.split()
+    split_cmd3 = split_cmd2[:]
+
+    split_cmd2.insert(1, ' 2 ')
+    split_cmd3.insert(1, ' 3 ')
+
+    return ["".join(split_cmd3), "".join(split_cmd2)]

thefuck/rules/no_command.py

@@ -1,5 +1,5 @@
 from difflib import get_close_matches
-from thefuck.utils import sudo_support, get_all_executables, get_closest
+from thefuck.utils import sudo_support, get_all_executables
 
 
 @sudo_support
@@ -12,8 +12,9 @@ def match(command, settings):
 @sudo_support
 def get_new_command(command, settings):
     old_command = command.script.split(' ')[0]
-    new_command = get_closest(old_command, get_all_executables())
-    return ' '.join([new_command] + command.script.split(' ')[1:])
+    new_cmds = get_close_matches(old_command, get_all_executables(), cutoff=0.1)
+    return [' '.join([new_command] + command.script.split(' ')[1:])
+            for new_command in new_cmds]
 
 
 priority = 3000

thefuck/rules/pacman.py

@@ -14,10 +14,12 @@ def __get_pkgfile(command):
 
         command = command.split(" ")[0]
 
-        return subprocess.check_output(
+        packages = subprocess.check_output(
             ['pkgfile', '-b', '-v', command],
             universal_newlines=True, stderr=DEVNULL
-        ).split()
+        ).splitlines()
+
+        return [package.split()[0] for package in packages]
     except subprocess.CalledProcessError:
         return None
 
@@ -27,10 +29,11 @@ def match(command, settings):
 
 
 def get_new_command(command, settings):
-    package = __get_pkgfile(command)[0]
+    packages = __get_pkgfile(command)
 
     formatme = shells.and_('{} -S {}', '{}')
-    return formatme.format(pacman, package, command.script)
+    return [formatme.format(pacman, package, command.script)
+            for package in packages]
 
 
 if not which('pkgfile'):

thefuck/rules/sudo.py

@@ -9,6 +9,7 @@ patterns = ['permission denied',
             'This operation requires root.',
             'requested operation requires superuser privilege',
             'must be run as root',
+            'must run as root',
             'must be superuser',
             'must be root',
             'need to be root',
@@ -27,4 +28,7 @@ def match(command, settings):
 
 
 def get_new_command(command, settings):
-    return u'sudo {}'.format(command.script)
+    if '>' in command.script:
+        return u'sudo sh -c "{}"'.format(command.script.replace('"', '\\"'))
+    else:
+        return u'sudo {}'.format(command.script)

thefuck/rules/tmux.py

@@ -1,4 +1,4 @@
-from thefuck.utils import get_closest, replace_argument
+from thefuck.utils import get_closest, replace_command
 import re
 
 
@@ -15,6 +15,4 @@ def get_new_command(command, settings):
     old_cmd = cmd.group(1)
     suggestions = [cmd.strip() for cmd in cmd.group(2).split(',')]
 
-    new_cmd = get_closest(old_cmd, suggestions)
-
-    return replace_argument(command.script, old_cmd, new_cmd)
+    return replace_command(command, old_cmd, suggestions)

thefuck/rules/tsuru_not_command.py

@@ -1,6 +1,6 @@
 import re
 from thefuck.utils import (get_closest, replace_argument,
-                           get_all_matched_commands)
+                           get_all_matched_commands, replace_command)
 
 
 def match(command, settings):
@@ -12,7 +12,6 @@ def match(command, settings):
 def get_new_command(command, settings):
     broken_cmd = re.findall(r'tsuru: "([^"]*)" is not a tsuru command',
                             command.stderr)[0]
-    new_cmd = get_closest(broken_cmd,
-                          get_all_matched_commands(command.stderr))
-    return replace_argument(command.script, broken_cmd, new_cmd)
+    return replace_command(command, broken_cmd,
+                           get_all_matched_commands(command.stderr))
 

thefuck/rules/whois.py

@@ -19,7 +19,7 @@ def match(command, settings):
         - www.google.fr → subdomain: www, domain: 'google.fr';
         - google.co.uk → subdomain: None, domain; 'google.co.uk'.
     """
-    return 'whois' in command.script and len(command.script.split()) > 1
+    return 'whois ' in command.script.strip()
 
 
 def get_new_command(command, settings):
@@ -28,4 +28,5 @@ def get_new_command(command, settings):
     if '/' in command.script:
         return 'whois ' + urlparse(url).netloc
     elif '.' in command.script:
-        return 'whois ' + '.'.join(urlparse(url).path.split('.')[1:])
+        path = urlparse(url).path.split('.')
+        return ['whois ' + '.'.join(path[n:]) for n in range(1, len(path))]

thefuck/types.py

@@ -3,6 +3,8 @@ from collections import namedtuple
 
 Command = namedtuple('Command', ('script', 'stdout', 'stderr'))
 
+CorrectedCommand = namedtuple('CorrectedCommand', ('script', 'side_effect', 'priority'))
+
 Rule = namedtuple('Rule', ('name', 'match', 'get_new_command',
                            'enabled_by_default', 'side_effect',
                            'priority', 'requires_output'))

thefuck/ui.py

@@ -0,0 +1,104 @@
+# -*- encoding: utf-8 -*-
+
+import sys
+from . import logs
+
+try:
+    from msvcrt import getch
+except ImportError:
+    def getch():
+        import tty
+        import termios
+
+        fd = sys.stdin.fileno()
+        old = termios.tcgetattr(fd)
+        try:
+            tty.setraw(fd)
+            ch = sys.stdin.read(1)
+            if ch == '\x03':  # For compatibility with msvcrt.getch
+                raise KeyboardInterrupt
+            return ch
+        finally:
+            termios.tcsetattr(fd, termios.TCSADRAIN, old)
+
+SELECT = 0
+ABORT = 1
+PREVIOUS = 2
+NEXT = 3
+
+
+def read_actions():
+    """Yields actions for pressed keys."""
+    buffer = []
+    while True:
+        try:
+            ch = getch()
+        except KeyboardInterrupt:  # Ctrl+C
+            yield ABORT
+
+        if ch in ('\n', '\r'):  # Enter
+            yield SELECT
+
+        buffer.append(ch)
+        buffer = buffer[-3:]
+
+        if buffer == ['\x1b', '[', 'A']:  # ↑
+            yield PREVIOUS
+        elif buffer == ['\x1b', '[', 'B']:  # ↓
+            yield NEXT
+
+
+class CommandSelector(object):
+    def __init__(self, commands):
+        self._commands = commands
+        self._index = 0
+        self._on_change = lambda x: x
+
+    def next(self):
+        self._index = (self._index + 1) % len(self._commands)
+        self._on_change(self.value)
+
+    def previous(self):
+        self._index = (self._index - 1) % len(self._commands)
+        self._on_change(self.value)
+
+    @property
+    def value(self):
+        return self._commands[self._index]
+
+    def on_change(self, fn):
+        self._on_change = fn
+        fn(self.value)
+
+
+def select_command(corrected_commands, settings):
+    """Returns:
+
+     - the first command when confirmation disabled;
+     - None when ctrl+c pressed;
+     - selected command.
+
+    """
+    if not corrected_commands:
+        logs.failed('No fucks given', settings)
+        return
+
+    selector = CommandSelector(corrected_commands)
+    if not settings.require_confirmation:
+        logs.show_corrected_command(selector.value, settings)
+        return selector.value
+
+    multiple_cmds = len(corrected_commands) > 1
+
+    selector.on_change(lambda val: logs.confirm_text(val, multiple_cmds, settings))
+    for action in read_actions():
+        if action == SELECT:
+            sys.stderr.write('\n')
+            return selector.value
+        elif action == ABORT:
+            logs.failed('\nAborted', settings)
+            return
+        elif action == PREVIOUS:
+            selector.previous()
+        elif action == NEXT:
+            selector.next()

thefuck/utils.py

@@ -69,6 +69,8 @@ def sudo_support(fn):
 
         if result and isinstance(result, six.string_types):
             return u'sudo {}'.format(result)
+        elif isinstance(result, list):
+            return [u'sudo {}'.format(x) for x in result]
         else:
             return result
     return wrapper
@@ -161,6 +163,14 @@ def replace_argument(script, from_, to):
             u' {} '.format(from_), u' {} '.format(to), 1)
 
 
+def eager(fn):
+    @wraps(fn)
+    def wrapper(*args, **kwargs):
+        return list(fn(*args, **kwargs))
+    return wrapper
+
+
+@eager
 def get_all_matched_commands(stderr, separator='Did you mean'):
     should_yield = False
     for line in stderr.split('\n'):
@@ -168,3 +178,10 @@ def get_all_matched_commands(stderr, separator='Did you mean'):
             should_yield = True
         elif should_yield and line:
             yield line.strip()
+
+
+def replace_command(command, broken, matched):
+    """Helper for *_no_command rules."""
+    new_cmds = get_close_matches(broken, matched, cutoff=0.1)
+    return [replace_argument(command.script, broken, new_cmd.strip())
+            for new_cmd in new_cmds]