Bump to 1.44

Conflicts:
	README.md

README.md

@@ -152,7 +152,11 @@ using the matched rule and runs it. Rules enabled by default are as follows:
 * `cp_omitting_directory` – adds `-a` when you `cp` directory;
 * `cpp11` – add missing `-std=c++11` to `g++` or `clang++`;
 * `dry` – fix repetitions like "git git push";
+* `django_south_ghost` – adds `--delete-ghost-migrations` to failed because ghosts django south migration;
+* `django_south_merge` – adds `--merge` to inconsistent django south migration;
 * `fix_alt_space` – replaces Alt+Space with Space character;
+* `javac` – appends missing `.java` when compiling Java files;
+* `java` – removes `.java` extension when running Java programs;
 * `git_add` – fix *"Did you forget to 'git add'?"*;
 * `git_checkout` – creates the branch before checking-out;
 * `git_no_command` – fixes wrong git commands like `git brnch`;
@@ -163,10 +167,12 @@ using the matched rule and runs it. Rules enabled by default are as follows:
 * `has_exists_script` – prepends `./` when script/binary exists;
 * `lein_not_task` – fixes wrong `lein` tasks like `lein rpl`;
 * `ls_lah` – adds -lah to ls;
+* `man` – change manual section;
 * `man_no_space` – fixes man commands without spaces, for example `mandiff`;
 * `mkdir_p` – adds `-p` when you trying to create directory without parent;
 * `no_command` – fixes wrong console commands, for example `vom/vim`;
 * `no_such_file` – creates missing directories with `mv` and `cp` commands;
+* `open` – prepends `http` to address passed to `open`;
 * `pip_unknown_command` – fixes wrong pip commands, for example `pip instatl/pip install`;
 * `python_command` – prepends `python` when you trying to run not executable/without `./` python script;
 * `rm_dir` – adds `-rf` when you trying to remove directory;

setup.py

@@ -1,7 +1,7 @@
 from setuptools import setup, find_packages
 
 
-VERSION = '1.42'
+VERSION = '1.44'
 
 
 setup(name='thefuck',

tests/rules/test_django_south_ghost.py

@@ -0,0 +1,53 @@
+import pytest
+from thefuck.rules.django_south_ghost import match, get_new_command
+from tests.utils import Command
+
+
+@pytest.fixture
+def stderr():
+    return '''Traceback (most recent call last):
+  File "/home/nvbn/work/.../bin/python", line 42, in <module>
+    exec(compile(__file__f.read(), __file__, "exec"))
+  File "/home/nvbn/work/.../app/manage.py", line 34, in <module>
+    execute_from_command_line(sys.argv)
+  File "/home/nvbn/work/.../lib/django/core/management/__init__.py", line 443, in execute_from_command_line
+    utility.execute()
+  File "/home/nvbn/work/.../lib/django/core/management/__init__.py", line 382, in execute
+    self.fetch_command(subcommand).run_from_argv(self.argv)
+  File "/home/nvbn/work/.../lib/django/core/management/base.py", line 196, in run_from_argv
+    self.execute(*args, **options.__dict__)
+  File "/home/nvbn/work/.../lib/django/core/management/base.py", line 232, in execute
+    output = self.handle(*args, **options)
+  File "/home/nvbn/work/.../app/lib/south/management/commands/migrate.py", line 108, in handle
+    ignore_ghosts = ignore_ghosts,
+  File "/home/nvbn/work/.../app/lib/south/migration/__init__.py", line 193, in migrate_app
+    applied_all = check_migration_histories(applied_all, delete_ghosts, ignore_ghosts)
+  File "/home/nvbn/work/.../app/lib/south/migration/__init__.py", line 88, in check_migration_histories
+    raise exceptions.GhostMigrations(ghosts)
+south.exceptions.GhostMigrations: 
+
+ ! These migrations are in the database but not on disk:
+    <app1: 0033_auto__...>
+    <app1: 0034_fill_...>
+    <app1: 0035_rename_...>
+    <app2: 0003_add_...>
+    <app2: 0004_denormalize_...>
+    <app1: 0033_auto....>
+    <app1: 0034_fill...>
+ ! I'm not trusting myself; either fix this yourself by fiddling
+ ! with the south_migrationhistory table, or pass --delete-ghost-migrations
+ ! to South to have it delete ALL of these records (this may not be good).
+'''
+
+
+def test_match(stderr):
+    assert match(Command('./manage.py migrate', stderr=stderr), None)
+    assert match(Command('python manage.py migrate', stderr=stderr), None)
+    assert not match(Command('./manage.py migrate'), None)
+    assert not match(Command('app migrate', stderr=stderr), None)
+    assert not match(Command('./manage.py test', stderr=stderr), None)
+
+
+def test_get_new_command():
+    assert get_new_command(Command('./manage.py migrate auth'), None)\
+        == './manage.py migrate auth --delete-ghost-migrations'

tests/rules/test_django_south_merge.py

@@ -0,0 +1,43 @@
+import pytest
+from thefuck.rules.django_south_merge import match, get_new_command
+from tests.utils import Command
+
+
+@pytest.fixture
+def stderr():
+    return '''Running migrations for app:
+ ! Migration app:0003_auto... should not have been applied before app:0002_auto__add_field_query_due_date_ but was.
+Traceback (most recent call last):
+  File "/home/nvbn/work/.../bin/python", line 42, in <module>
+    exec(compile(__file__f.read(), __file__, "exec"))
+  File "/home/nvbn/work/.../app/manage.py", line 34, in <module>
+    execute_from_command_line(sys.argv)
+  File "/home/nvbn/work/.../lib/django/core/management/__init__.py", line 443, in execute_from_command_line
+    utility.execute()
+  File "/home/nvbn/work/.../lib/django/core/management/__init__.py", line 382, in execute
+    self.fetch_command(subcommand).run_from_argv(self.argv)
+  File "/home/nvbn/work/.../lib/django/core/management/base.py", line 196, in run_from_argv
+    self.execute(*args, **options.__dict__)
+  File "/home/nvbn/work/.../lib/django/core/management/base.py", line 232, in execute
+    output = self.handle(*args, **options)
+  File "/home/nvbn/work/.../app/lib/south/management/commands/migrate.py", line 108, in handle
+    ignore_ghosts = ignore_ghosts,
+  File "/home/nvbn/work/.../app/lib/south/migration/__init__.py", line 207, in migrate_app
+    raise exceptions.InconsistentMigrationHistory(problems)
+south.exceptions.InconsistentMigrationHistory: Inconsistent migration history
+The following options are available:
+    --merge: will just attempt the migration ignoring any potential dependency conflicts.
+'''
+
+
+def test_match(stderr):
+    assert match(Command('./manage.py migrate', stderr=stderr), None)
+    assert match(Command('python manage.py migrate', stderr=stderr), None)
+    assert not match(Command('./manage.py migrate'), None)
+    assert not match(Command('app migrate', stderr=stderr), None)
+    assert not match(Command('./manage.py test', stderr=stderr), None)
+
+
+def test_get_new_command():
+    assert get_new_command(Command('./manage.py migrate auth'), None) \
+           == './manage.py migrate auth --merge'

tests/rules/test_java.py

@@ -0,0 +1,17 @@
+import pytest
+from thefuck.rules.java import match, get_new_command
+from tests.utils import Command
+
+
+@pytest.mark.parametrize('command', [
+	Command(script='java foo.java'),
+	Command(script='java bar.java')])
+def test_match(command):
+	assert match(command, None)
+
+
+@pytest.mark.parametrize('command, new_command', [
+	(Command('java foo.java'), 'java foo'),
+	(Command('java bar.java'), 'java bar')])
+def test_get_new_command(command, new_command):
+	assert get_new_command(command, None) == new_command

tests/rules/test_javac.py

@@ -0,0 +1,17 @@
+import pytest
+from thefuck.rules.javac import match, get_new_command
+from tests.utils import Command
+
+
+@pytest.mark.parametrize('command', [
+	Command(script='javac foo'), 
+	Command(script='javac bar')])
+def test_match(command):
+	assert match(command, None)
+
+
+@pytest.mark.parametrize('command, new_command', [
+	(Command('javac foo'), 'javac foo.java'),
+	(Command('javac bar'), 'javac bar.java')])
+def test_get_new_command(command, new_command):
+	assert get_new_command(command, None) == new_command

tests/rules/test_man.py

@@ -0,0 +1,34 @@
+import pytest
+from thefuck.rules.man import match, get_new_command
+from tests.utils import Command
+
+
+@pytest.mark.parametrize('command', [
+    Command('man read'),
+    Command('man 2 read'),
+    Command('man 3 read'),
+    Command('man -s2 read'),
+    Command('man -s3 read'),
+    Command('man -s 2 read'),
+    Command('man -s 3 read')])
+def test_match(command):
+    assert match(command, None)
+
+
+@pytest.mark.parametrize('command', [
+    Command('man'),
+    Command('man ')])
+def test_not_match(command):
+    assert not match(command, None)
+
+
+@pytest.mark.parametrize('command, new_command', [
+    (Command('man read'), 'man 3 read'),
+    (Command('man 2 read'), 'man 3 read'),
+    (Command('man 3 read'), 'man 2 read'),
+    (Command('man -s2 read'), 'man -s3 read'),
+    (Command('man -s3 read'), 'man -s2 read'),
+    (Command('man -s 2 read'), 'man -s 3 read'),
+    (Command('man -s 3 read'), 'man -s 2 read')])
+def test_get_new_command(command, new_command):
+    assert get_new_command(command, None) == new_command

tests/rules/test_no_command.py

@@ -3,7 +3,7 @@ from thefuck.rules.no_command import match, get_new_command
 
 
 def test_match():
-    with patch('thefuck.rules.no_command._get_all_bins',
+    with patch('thefuck.rules.no_command._get_all_callables',
                return_value=['vim', 'apt-get']):
         assert match(Mock(stderr='vom: not found', script='vom file.py'), None)
         assert not match(Mock(stderr='qweqwe: not found', script='qweqwe'), None)
@@ -11,7 +11,7 @@ def test_match():
 
 
 def test_get_new_command():
-    with patch('thefuck.rules.no_command._get_all_bins',
+    with patch('thefuck.rules.no_command._get_all_callables',
                return_value=['vim', 'apt-get']):
         assert get_new_command(
             Mock(stderr='vom: not found',

tests/rules/test_open.py

@@ -0,0 +1,25 @@
+import pytest
+from thefuck.rules.open import match, get_new_command
+from tests.utils import Command
+
+
+@pytest.mark.parametrize('command', [
+	Command(script='open foo.com'), 
+	Command(script='open foo.ly'), 
+	Command(script='open foo.org'), 
+	Command(script='open foo.net'), 
+	Command(script='open foo.se'), 
+	Command(script='open foo.io')])
+def test_match(command):
+	assert match(command, None)
+
+
+@pytest.mark.parametrize('command, new_command', [
+	(Command('open foo.com'), 'open http://foo.com'),
+	(Command('open foo.ly'), 'open http://foo.ly'),
+	(Command('open foo.org'), 'open http://foo.org'),
+	(Command('open foo.net'), 'open http://foo.net'),
+	(Command('open foo.se'), 'open http://foo.se'),
+	(Command('open foo.io'), 'open http://foo.io')])
+def test_get_new_command(command, new_command):
+	assert get_new_command(command, None) == new_command

tests/rules/test_whois.py

@@ -11,6 +11,10 @@ def test_match(command):
     assert match(command, None)
 
 
+def test_not_match():
+    assert not match(Command(script='whois'), None)
+
+
 @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'),

tests/test_shells.py

@@ -13,19 +13,33 @@ def isfile(mocker):
 
 
 class TestGeneric(object):
-    def test_from_shell(self):
+    @pytest.fixture
-        assert shells.Generic().from_shell('pwd') == 'pwd'
+    def shell(self):
+        return shells.Generic()
 
-    def test_to_shell(self):
+    def test_from_shell(self, shell):
-        assert shells.Generic().to_shell('pwd') == 'pwd'
+        assert shell.from_shell('pwd') == 'pwd'
 
-    def test_put_to_history(self, builtins_open):
+    def test_to_shell(self, shell):
-        assert shells.Generic().put_to_history('ls') is None
+        assert shell.to_shell('pwd') == 'pwd'
+
+    def test_put_to_history(self, builtins_open, shell):
+        assert shell.put_to_history('ls') is None
         assert builtins_open.call_count == 0
 
+    def test_and_(self, shell):
+        assert shell.and_('ls', 'cd') == 'ls && cd'
+
+    def test_get_aliases(self, shell):
+        assert shell.get_aliases() == {}
+
 
 @pytest.mark.usefixtures('isfile')
 class TestBash(object):
+    @pytest.fixture
+    def shell(self):
+        return shells.Bash()
+
     @pytest.fixture(autouse=True)
     def Popen(self, mocker):
         mock = mocker.patch('thefuck.shells.Popen')
@@ -38,42 +52,81 @@ class TestBash(object):
     @pytest.mark.parametrize('before, after', [
         ('pwd', 'pwd'),
         ('ll', 'ls -alF')])
-    def test_from_shell(self, before, after):
+    def test_from_shell(self, before, after, shell):
-        assert shells.Bash().from_shell(before) == after
+        assert shell.from_shell(before) == after
 
-    def test_to_shell(self):
+    def test_to_shell(self, shell):
-        assert shells.Bash().to_shell('pwd') == 'pwd'
+        assert shell.to_shell('pwd') == 'pwd'
 
-    def test_put_to_history(self, builtins_open):
+    def test_put_to_history(self, builtins_open, shell):
-        shells.Bash().put_to_history('ls')
+        shell.put_to_history('ls')
         builtins_open.return_value.__enter__.return_value. \
             write.assert_called_once_with('ls\n')
 
+    def test_and_(self, shell):
+        assert shell.and_('ls', 'cd') == 'ls && cd'
+
+    def test_get_aliases(self, shell):
+        assert shell.get_aliases() == {'l': 'ls -CF',
+                                       'la': 'ls -A',
+                                       'll': 'ls -alF'}
+
 
 @pytest.mark.usefixtures('isfile')
 class TestFish(object):
+    @pytest.fixture
+    def shell(self):
+        return shells.Fish()
+
+    @pytest.fixture(autouse=True)
+    def Popen(self, mocker):
+        mock = mocker.patch('thefuck.shells.Popen')
+        mock.return_value.stdout.read.return_value = (
+            b'fish_config\nfuck\nfunced\nfuncsave\ngrep\nhistory\nll\nmath')
+        return mock
+
     @pytest.mark.parametrize('before, after', [
         ('pwd', 'pwd'),
-        ('ll', 'll')])  # Fish has no aliases but functions
+        ('fuck', 'fish -ic "fuck"'),
-    def test_from_shell(self, before, after):
+        ('find', 'find'),
-        assert shells.Fish().from_shell(before) == after
+        ('funced', 'fish -ic "funced"'),
+        ('awk', 'awk'),
+        ('math "2 + 2"', r'fish -ic "math \"2 + 2\""'),
+        ('vim', 'vim'),
+        ('ll', 'fish -ic "ll"')])  # Fish has no aliases but functions
+    def test_from_shell(self, before, after, shell):
+        assert shell.from_shell(before) == after
 
-    def test_to_shell(self):
+    def test_to_shell(self, shell):
-        assert shells.Fish().to_shell('pwd') == 'pwd'
+        assert shell.to_shell('pwd') == 'pwd'
 
-    def test_put_to_history(self, builtins_open, mocker):
+    def test_put_to_history(self, builtins_open, mocker, shell):
         mocker.patch('thefuck.shells.time',
                      return_value=1430707243.3517463)
-        shells.Fish().put_to_history('ls')
+        shell.put_to_history('ls')
         builtins_open.return_value.__enter__.return_value. \
             write.assert_called_once_with('- cmd: ls\n   when: 1430707243\n')
 
-    def test_and_(self):
+    def test_and_(self, shell):
-        assert shells.Fish().and_('foo', 'bar') == 'foo; and bar'
+        assert shell.and_('foo', 'bar') == 'foo; and bar'
+
+    def test_get_aliases(self, shell):
+        assert shell.get_aliases() == {'fish_config': 'fish_config',
+                                       'fuck': 'fuck',
+                                       'funced': 'funced',
+                                       'funcsave': 'funcsave',
+                                       'grep': 'grep',
+                                       'history': 'history',
+                                       'll': 'll',
+                                       'math': 'math'}
 
 
 @pytest.mark.usefixtures('isfile')
 class TestZsh(object):
+    @pytest.fixture
+    def shell(self):
+        return shells.Zsh()
+
     @pytest.fixture(autouse=True)
     def Popen(self, mocker):
         mock = mocker.patch('thefuck.shells.Popen')
@@ -86,15 +139,23 @@ class TestZsh(object):
     @pytest.mark.parametrize('before, after', [
         ('pwd', 'pwd'),
         ('ll', 'ls -alF')])
-    def test_from_shell(self, before, after):
+    def test_from_shell(self, before, after, shell):
-        assert shells.Zsh().from_shell(before) == after
+        assert shell.from_shell(before) == after
 
-    def test_to_shell(self):
+    def test_to_shell(self, shell):
-        assert shells.Zsh().to_shell('pwd') == 'pwd'
+        assert shell.to_shell('pwd') == 'pwd'
 
-    def test_put_to_history(self, builtins_open, mocker):
+    def test_put_to_history(self, builtins_open, mocker, shell):
         mocker.patch('thefuck.shells.time',
                      return_value=1430707243.3517463)
-        shells.Zsh().put_to_history('ls')
+        shell.put_to_history('ls')
         builtins_open.return_value.__enter__.return_value. \
             write.assert_called_once_with(': 1430707243:0;ls\n')
+
+    def test_and_(self, shell):
+        assert shell.and_('ls', 'cd') == 'ls && cd'
+
+    def test_get_aliases(self, shell):
+        assert shell.get_aliases() == {'l': 'ls -CF',
+                                       'la': 'ls -A',
+                                       'll': 'ls -alF'}

tests/test_utils.py

@@ -1,6 +1,6 @@
 import pytest
 from mock import Mock
-from thefuck.utils import sudo_support, wrap_settings
+from thefuck.utils import sudo_support, wrap_settings, memoize
 from thefuck.types import Settings
 from tests.utils import Command
 
@@ -24,3 +24,11 @@ def test_sudo_support(return_value, command, called, result):
     fn = Mock(return_value=return_value, __name__='')
     assert sudo_support(fn)(Command(command), None) == result
     fn.assert_called_once_with(Command(called), None)
+
+
+def test_memoize():
+    fn = Mock(__name__='fn')
+    memoized = memoize(fn)
+    memoized()
+    memoized()
+    fn.assert_called_once_with()

thefuck/rules/django_south_ghost.py

@@ -0,0 +1,8 @@
+def match(command, settings):
+    return 'manage.py' in command.script and \
+           'migrate' in command.script \
+           and 'or pass --delete-ghost-migrations' in command.stderr
+
+
+def get_new_command(command, settings):
+    return u'{} --delete-ghost-migrations'.format(command.script)

thefuck/rules/django_south_merge.py

@@ -0,0 +1,8 @@
+def match(command, settings):
+    return 'manage.py' in command.script and \
+           'migrate' in command.script \
+           and '--merge: will just attempt the migration' in command.stderr
+
+
+def get_new_command(command, settings):
+    return u'{} --merge'.format(command.script)

thefuck/rules/java.py

@@ -0,0 +1,13 @@
+# Fixes common java command mistake
+# 
+# Example:
+# > java foo.java
+# Error: Could not find or load main class foo.java
+# 
+
+def match(command, settings):
+	return (command.script.startswith ('java ')
+		and command.script.endswith ('.java'))
+
+def get_new_command(command, settings):
+	return command.script[:-5]

thefuck/rules/javac.py

@@ -0,0 +1,15 @@
+# Appends .java when compiling java files
+# 
+# Example:
+# > javac foo
+# error: Class names, 'foo', are only accepted if annotation 
+# processing is explicitly requested
+#
+# 
+
+def match(command, settings):
+	return (command.script.startswith ('javac ')
+			and not command.script.endswith('.java'))
+
+def get_new_command(command, settings):
+	return command.script + '.java'

thefuck/rules/man.py

@@ -0,0 +1,13 @@
+def match(command, settings):
+    return command.script.strip().startswith('man ')
+
+
+def get_new_command(command, settings):
+    if '3' in command.script:
+        return command.script.replace("3", "2")
+    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)

thefuck/rules/no_command.py

@@ -2,6 +2,7 @@ from difflib import get_close_matches
 import os
 from pathlib import Path
 from thefuck.utils import sudo_support
+from thefuck.shells import get_aliases
 
 
 def _safe(fn, fallback):
@@ -11,25 +12,25 @@ def _safe(fn, fallback):
         return fallback
 
 
-def _get_all_bins():
+def _get_all_callables():
     return [exe.name
             for path in os.environ.get('PATH', '').split(':')
             for exe in _safe(lambda: list(Path(path).iterdir()), [])
-            if not _safe(exe.is_dir, True)]
+            if not _safe(exe.is_dir, True)] + get_aliases()
 
 
 @sudo_support
 def match(command, settings):
     return 'not found' in command.stderr and \
            bool(get_close_matches(command.script.split(' ')[0],
-                                  _get_all_bins()))
+                                  _get_all_callables()))
 
 
 @sudo_support
 def get_new_command(command, settings):
     old_command = command.script.split(' ')[0]
     new_command = get_close_matches(old_command,
-                                    _get_all_bins())[0]
+                                    _get_all_callables())[0]
     return ' '.join([new_command] + command.script.split(' ')[1:])
 
 

thefuck/rules/open.py

@@ -0,0 +1,24 @@
+# Opens URL's in the default web browser
+# 
+# Example:
+# > open github.com
+# The file ~/github.com does not exist.
+# Perhaps you meant 'http://github.com'?
+#
+# 
+
+def match(command, settings):
+	return (command.script.startswith ('open')
+			and (
+			# Wanted to use this:
+			# 'http' in command.stderr
+			'.com' in command.script
+			or '.net' in command.script
+			or '.org' in command.script
+			or '.ly' in command.script
+			or '.io' in command.script
+			or '.se' in command.script
+			or '.edu' in command.script))
+
+def get_new_command(command, settings):
+	return 'open http://' + command.script[5:]

thefuck/rules/sudo.py

@@ -11,7 +11,8 @@ patterns = ['permission denied',
             'requested operation requires superuser privilege',
             'must be run as root',
             'must be superuser',
-            'Need to be root']
+            'Need to be root',
+            'you must be root to run this program.']
 
 
 def match(command, settings):

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
+    return 'whois' in command.script and len(command.script.split()) > 1
 
 
 def get_new_command(command, settings):

thefuck/shells.py

@@ -1,5 +1,5 @@
 """Module with shell specific actions, each shell class should
-implement `from_shell`, `to_shell`, `app_alias` and `put_to_history`
+implement `from_shell`, `to_shell`, `app_alias`, `put_to_history` and `get_aliases`
 methods.
 
 """
@@ -8,15 +8,16 @@ from subprocess import Popen, PIPE
 from time import time
 import os
 from psutil import Process
-from .utils import DEVNULL
+from .utils import DEVNULL, memoize
 
 
 class Generic(object):
-    def _get_aliases(self):
+
+    def get_aliases(self):
         return {}
 
     def _expand_aliases(self, command_script):
-        aliases = self._get_aliases()
+        aliases = self.get_aliases()
         binary = command_script.split(' ')[0]
         if binary in aliases:
             return command_script.replace(binary, aliases[binary], 1)
@@ -61,8 +62,10 @@ class Bash(Generic):
             value = value[1:-1]
         return name, value
 
-    def _get_aliases(self):
+    @memoize
-        proc = Popen('bash -ic alias', stdout=PIPE, stderr=DEVNULL, shell=True)
+    def get_aliases(self):
+        proc = Popen('bash -ic alias', stdout=PIPE, stderr=DEVNULL,
+                     shell=True)
         return dict(
             self._parse_alias(alias)
             for alias in proc.stdout.read().decode('utf-8').split('\n')
@@ -91,6 +94,25 @@ class Fish(Generic):
                 "    end\n"
                 "end")
 
+    @memoize
+    def get_aliases(self):
+        proc = Popen('fish -ic functions', stdout=PIPE, stderr=DEVNULL,
+                     shell=True)
+        functions = proc.stdout.read().decode('utf-8').strip().split('\n')
+        return {function: function for function in functions}
+
+    def _expand_aliases(self, command_script):
+        aliases = self.get_aliases()
+        binary = command_script.split(' ')[0]
+        if binary in aliases:
+            return 'fish -ic "{}"'.format(command_script.replace('"', r'\"'))
+        else:
+            return command_script
+
+    def from_shell(self, command_script):
+        """Prepares command before running in app."""
+        return self._expand_aliases(command_script)
+
     def _get_history_file_name(self):
         return os.path.expanduser('~/.config/fish/fish_history')
 
@@ -111,8 +133,10 @@ class Zsh(Generic):
             value = value[1:-1]
         return name, value
 
-    def _get_aliases(self):
+    @memoize
-        proc = Popen('zsh -ic alias', stdout=PIPE, stderr=DEVNULL, shell=True)
+    def get_aliases(self):
+        proc = Popen('zsh -ic alias', stdout=PIPE, stderr=DEVNULL,
+                     shell=True)
         return dict(
             self._parse_alias(alias)
             for alias in proc.stdout.read().decode('utf-8').split('\n')
@@ -134,8 +158,10 @@ class Tcsh(Generic):
         name, value = alias.split("\t", 1)
         return name, value
 
-    def _get_aliases(self):
+    @memoize
-        proc = Popen('tcsh -ic alias', stdout=PIPE, stderr=DEVNULL, shell=True)
+    def get_aliases(self):
+        proc = Popen('tcsh -ic alias', stdout=PIPE, stderr=DEVNULL,
+                     shell=True)
         return dict(
             self._parse_alias(alias)
             for alias in proc.stdout.read().decode('utf-8').split('\n')
@@ -153,16 +179,16 @@ shells = defaultdict(lambda: Generic(), {
     'bash': Bash(),
     'fish': Fish(),
     'zsh': Zsh(),
-    '-csh': Tcsh(),
+    'csh': Tcsh(),
     'tcsh': Tcsh()})
 
 
 def _get_shell():
     try:
-        shell = Process(os.getpid()).parent().cmdline()[0]
+        shell = Process(os.getpid()).parent().name()
     except TypeError:
-        shell = Process(os.getpid()).parent.cmdline[0]
+        shell = Process(os.getpid()).parent.name
-    return shells[os.path.basename(shell)]
+    return shells[shell]
 
 
 def from_shell(command):
@@ -183,3 +209,7 @@ def put_to_history(command):
 
 def and_(*commands):
     return _get_shell().and_(*commands)
+
+
+def get_aliases():
+    return list(_get_shell().get_aliases().keys())

thefuck/utils.py

@@ -1,5 +1,6 @@
 from functools import wraps
 import os
+import pickle
 import six
 from .types import Command
 
@@ -62,3 +63,18 @@ def sudo_support(fn):
         else:
             return result
     return wrapper
+
+
+def memoize(fn):
+    """Caches previous calls to the function."""
+    memo = {}
+
+    @wraps(fn)
+    def wrapper(*args, **kwargs):
+        key = pickle.dumps((args, kwargs))
+        if key not in memo:
+            memo[key] = fn(*args, **kwargs)
+
+        return memo[key]
+
+    return wrapper