From bfd7092effaf344d13e7365eeaf994101df3a32a Mon Sep 17 00:00:00 2001
From: Curzy <cms9597@gmail.com>
Date: Sun, 5 Feb 2017 03:17:49 +0900
Subject: [PATCH] Git pre-commit hook should not check non-python, excluded
 files

This commit fixes two problems that caused by git pre-commit hook

1. flake8 checks non-python files(.md, .txt, ...) and raise errors
```/var/folders/bb/0_8jdgw15f72f18m_fpqwcqr0000gn/T/tmpqbcrt3vn/Users/Curzy/Workspace/flative/hbnn/hbnn/README.md:3:2:
E999 SyntaxError: invalid syntax
/var/folders/bb/0_8jdgw15f72f18m_fpqwcqr0000gn/T/tmpqbcrt3vn/Users/Curzy/Workspace/flative/hbnn/hbnn/README.md:3:20:
E226 missing whitespace around arithmetic operator```
this problem fixed with find_modified_files function
2. flake8 checks excluded files by config(.flake8, config, ...)
```.flake8
[flake8]
ignore = F401
exclude =
    .git,
    __pycache__,
    hbnn/settings.py,
    manage.py,
    */migrations
```
```
./hbnn/settings.py:102:80: E501 line too long (83 > 79 characters)
./user/migrations/0001_initial.py:20:80: E501 line too long (88 > 79 characters)
./user/migrations/0001_initial.py:21:80: E501 line too long (103 > 79 characters)
```
this problem fixed with update_execuldes function should contain both original, temp paths
---
 src/flake8/main/git.py | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/flake8/main/git.py b/src/flake8/main/git.py
index 57701f6..85accc7 100644
--- a/src/flake8/main/git.py
+++ b/src/flake8/main/git.py
@@ -153,7 +153,7 @@ def make_temporary_directory_from(destination, directory):
 def find_modified_files(lazy):
     diff_index_cmd = [
         'git', 'diff-index', '--cached', '--name-only',
-        '--diff-filter=ACMRTUXB', 'HEAD'
+        '--diff-filter=ACMRTUXB', 'HEAD', '|', 'grep', '-e', '\.py$'
     ]
     if lazy:
         diff_index_cmd.remove('--cached')
@@ -206,10 +206,10 @@ def config_for(parameter):
 
 
 def update_excludes(exclude_list, temporary_directory_path):
-    return [
+    return exclude_list + [
         (temporary_directory_path + pattern)
-        if os.path.isabs(pattern) else pattern
         for pattern in exclude_list
+        if os.path.isabs(pattern)
     ]