Add support for switch_lang for Korean. (#981)

* switch korean letters to english

* revised according to recent changes

* Fix typo in tests/test_switch_lang.py

* Add a test case for coverage

* Change: Moved decomposing logic which changes command.script to get_new_command instead of match.

* Fix: changed unicode characters to unicode string for python2 compatibility.

* Fix: Modified to change request.

@ik1ne @yangkyeongmo

tests/rules/test_switch_lang.py

@@ -1,6 +1,7 @@
 # -*- encoding: utf-8 -*-
 
 import pytest
+
 from thefuck.rules import switch_lang
 from thefuck.types import Command
 
@@ -9,7 +10,8 @@ from thefuck.types import Command
     Command(u'фзе-пуе', 'command not found: фзе-пуе'),
     Command(u'λσ', 'command not found: λσ'),
     Command(u'שפא-עקא', 'command not found: שפא-עקא'),
-    Command(u'ךד', 'command not found: ךד')])
+    Command(u'ךד', 'command not found: ךד'),
+    Command(u'녀애 ㅣㄴ', 'command not found: 녀애 ㅣㄴ')])
 def test_match(command):
     assert switch_lang.match(command)
 
@@ -19,7 +21,8 @@ def test_match(command):
     Command(u'ls', 'command not found: ls'),
     Command(u'агсл', 'command not found: агсл'),
     Command(u'фзе-пуе', 'some info'),
-    Command(u'שפא-עקא', 'some info')])
+    Command(u'שפא-עקא', 'some info'),
+    Command(u'녀애 ㅣㄴ', 'some info')])
 def test_not_match(command):
     assert not switch_lang.match(command)
 
@@ -28,6 +31,9 @@ def test_not_match(command):
     (Command(u'фзе-пуе штыефдд мшь', ''), 'apt-get install vim'),
     (Command(u'λσ -λα', ''), 'ls -la'),
     (Command(u'שפא-עקא ןמדאשךך הןצ', ''), 'apt-get install vim'),
-    (Command(u'ךד -ךש', ''), 'ls -la')])
+    (Command(u'ךד -ךש', ''), 'ls -la'),
+    (Command(u'멧-ㅎㄷㅅ ㅑㅜㄴㅅ미ㅣ 퍄ㅡ', ''), 'apt-get install vim'),
+    (Command(u'ㅣㄴ -ㅣㅁ', ''), 'ls -la'),
+    (Command(u'ㅔㅁㅅ촤', ''), 'patchk'), ])
 def test_get_new_command(command, new_command):
     assert switch_lang.get_new_command(command) == new_command