Add handler for "is not a git command"

README.md

@@ -36,6 +36,15 @@ zsh: command not found: puthon
 ➜ fuck
 Python 3.4.2 (default, Oct  8 2014, 13:08:17)
 ...
+
+➜ git brnch
+git: 'brnch' is not a git command. See 'git --help'.
+
+Did you mean this?
+	branch
+
+➜ fuck
+* master
 ```
 
 ## Installation

setup.py

@@ -2,7 +2,7 @@ from setuptools import setup, find_packages
 
 
 setup(name='thefuck',
-      version=1.2,
+      version=1.3,
       description="Magnificent app which corrects your previous console command",
       author='Vladimir Iakovlev',
       author_email='nvbn.rm@gmail.com',

tests/rules/test_git_not_command.py

@@ -0,0 +1,28 @@
+import pytest
+from thefuck.main import Command
+from thefuck.rules.git_not_command import match, get_new_command
+
+
+@pytest.fixture
+def git_not_command():
+    return """git: 'brnch' is not a git command. See 'git --help'.
+
+Did you mean this?
+branch
+"""
+
+
+@pytest.fixture
+def git_command():
+    return "* master"
+
+
+def test_match(git_not_command, git_command):
+    assert match(Command('git brnch', '', git_not_command), None)
+    assert not match(Command('ls brnch', '', git_not_command), None)
+    assert not match(Command('git branch', '', git_command), None)
+
+
+def test_get_new_command(git_not_command):
+    assert get_new_command(Command('git brnch', '', git_not_command), None)\
+        == 'git branch'

thefuck/rules/git_not_command.py

@@ -0,0 +1,16 @@
+import re
+
+
+def match(command, settings):
+    return ('git' in command.script
+            and " is not a git command. See 'git --help'." in command.stderr
+            and 'Did you mean this?' in command.stderr)
+
+
+def get_new_command(command, settings):
+    broken_cmd = re.findall(r"git: '([^']*)' is not a git command",
+                            command.stderr)[0]
+    new_cmd = re.findall(r'Did you mean this\?\n\s*([^\n]*)',
+                         command.stderr)[0]
+    return command.script.replace(broken_cmd, new_cmd, 1)
+

thefuck/rules/no_command.py

@@ -22,4 +22,4 @@ def get_new_command(command, settings):
                              output)[0]
     fixed_name = re.findall(r"Command '([^']*)' from package",
                             output)[0]
-    return command.script.replace(broken_name, fixed_name)
+    return command.script.replace(broken_name, fixed_name, 1)