From 93af13e8f07c271d9f7573c2de9afcc22e27c3be Mon Sep 17 00:00:00 2001
From: Josh Holtrop <jholtrop@gmail.com>
Date: Thu, 15 Nov 2018 13:48:29 -0500
Subject: [PATCH] add fix-trailing-empty-lines

---
 fix-trailing-empty-lines | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
 create mode 100755 fix-trailing-empty-lines

diff --git a/fix-trailing-empty-lines b/fix-trailing-empty-lines
new file mode 100755
index 0000000..83ea13f
--- /dev/null
+++ b/fix-trailing-empty-lines
@@ -0,0 +1,17 @@
+#!/usr/bin/env ruby
+
+def rm_trailing_empty_lines(fname)
+  file = File.read(fname, mode: "rb")
+  new_file = file.sub(%r{(?:(\r\n)(?:\r\n)*|(\n)\n*)\z}, '\1\2')
+  if file != new_file
+    File.open(fname, "wb") do |fh|
+      fh.write(new_file)
+    end
+  end
+end
+
+ARGV.each do |arg|
+  if File.file?(arg)
+    rm_trailing_empty_lines(arg)
+  end
+end