From 4b444923145dd10e5010464838d3f809a36c28e0 Mon Sep 17 00:00:00 2001
From: Ruben Vereecken <rubenvereecken@gmail.com>
Date: Tue, 14 Apr 2015 22:15:00 +0200
Subject: [PATCH] Added make lint-changed which lints changed files only.

---
 Makefile                | 8 ++++++--
 scripts/lint-changed.sh | 6 ++++++
 scripts/pre-commit      | 1 +
 3 files changed, 13 insertions(+), 2 deletions(-)
 create mode 100755 scripts/lint-changed.sh

diff --git a/Makefile b/Makefile
index 783f691aeb..4363c4e492 100644
--- a/Makefile
+++ b/Makefile
@@ -7,8 +7,12 @@ setup:
 	@chmod +x .git/hooks/pre-commit
 	@echo "Git pre-commit hook installed."
 	
-	@gem install mdl --install-dir .gem
+	@gem install mdl --install-dir .gem --no-rdoc --no-ri
 	@echo "Installed required Ruby gems under .gem"
 	
 lint: 
-	@GEM_PATH=.gem PATH=$(PATH):.gem/bin find pages -exec mdl {} --style ./scripts/markdown-style.rb 1>&2 \;
+	@GEM_PATH=.gem find pages -exec .gem/bin/mdl {} --style ./scripts/markdown-style.rb 1>&2 \;
+	
+lint-changed:
+	@./scripts/lint-changed.sh
+	
diff --git a/scripts/lint-changed.sh b/scripts/lint-changed.sh
new file mode 100755
index 0000000000..022cee27f4
--- /dev/null
+++ b/scripts/lint-changed.sh
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+MD_FILES=`git diff --cached --name-only | tr " " "\n" | egrep ^.*\.md$`
+
+# Execute Markdown lint if any markdown files have been changed and added to git
+[[ -z "$MD_FILES" ]] || GEM_PATH=.gem .gem/bin/mdl "$MD_FILES"
diff --git a/scripts/pre-commit b/scripts/pre-commit
index 3869d9028f..c5d8e6ee05 100644
--- a/scripts/pre-commit
+++ b/scripts/pre-commit
@@ -2,3 +2,4 @@
 
 make index
 git add ./pages/index.json
+make lint-changed