From 9e1f358f82e5639e04c5aa93307351407426d6d8 Mon Sep 17 00:00:00 2001
From: jack1142 <6032823+jack1142@users.noreply.github.com>
Date: Fri, 14 Feb 2020 15:09:52 +0100
Subject: [PATCH] Add `make stylediff` command and run it in tox (#3535)

* Update Makefile

* Update make.bat

* Update tox.ini
---
 Makefile | 2 ++
 make.bat | 4 ++++
 tox.ini  | 2 +-
 3 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index 89ff453ef..1a1e996d1 100644
--- a/Makefile
+++ b/Makefile
@@ -5,6 +5,8 @@ reformat:
 	$(PYTHON) -m black `git ls-files "*.py"`
 stylecheck:
 	$(PYTHON) -m black --check `git ls-files "*.py"`
+stylediff:
+	$(PYTHON) -m black --check --diff `git ls-files "*.py"`
 
 # Translations
 gettext:
diff --git a/make.bat b/make.bat
index 5f880d235..a02c1391e 100644
--- a/make.bat
+++ b/make.bat
@@ -21,6 +21,10 @@ exit /B %ERRORLEVEL%
 black --check !PYFILES!
 exit /B %ERRORLEVEL%
 
+:stylediff
+black --check --diff !PYFILES!
+exit /B %ERRORLEVEL%
+
 :newenv
 py -3.8 -m venv --clear .venv
 .\.venv\Scripts\python -m pip install -U pip setuptools
diff --git a/tox.ini b/tox.ini
index d532c4727..4ceecff4c 100644
--- a/tox.ini
+++ b/tox.ini
@@ -65,4 +65,4 @@ setenv =
 basepython = python3.8
 extras = style
 commands =
-    make stylecheck
+    make stylediff