From 3e40a48332d8c2882de1305cabe1aec4fec7e4f1 Mon Sep 17 00:00:00 2001
From: practicalswift <practicalswift@users.noreply.github.com>
Date: Mon, 22 Jan 2018 10:49:30 +0100
Subject: [PATCH] Add lightning spell check

---
 Makefile                | 5 ++++-
 tools/check-spelling.sh | 8 ++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)
 create mode 100755 tools/check-spelling.sh

diff --git a/Makefile b/Makefile
index 43aed7c8d..8ce869b66 100644
--- a/Makefile
+++ b/Makefile
@@ -225,7 +225,10 @@ check-whitespace: check-whitespace/Makefile check-whitespace/tools/check-bolt.c
 check-markdown:
 	@tools/check-markdown.sh
 
-check-source: check-makefile check-source-bolt check-whitespace check-markdown
+check-spelling:
+	@tools/check-spelling.sh
+
+check-source: check-makefile check-source-bolt check-whitespace check-markdown check-spelling
 
 full-check: check check-source
 
diff --git a/tools/check-spelling.sh b/tools/check-spelling.sh
new file mode 100755
index 000000000..082ddf709
--- /dev/null
+++ b/tools/check-spelling.sh
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+git grep -iE 'l[ightn]{6}g|l[ightn]{8}g|ilghtning|lgihtning|lihgtning|ligthning|lighnting|lightinng|lightnnig|lightnign' -- . ':!tools/check-spelling.sh'
+if [[ $? == 0 ]]; then
+    echo "Identified a likely misspelling of the word \"lightning\" (see above). Please fix."
+    echo "Is this warning incorrect? Please teach tools/check-spelling.sh about the exciting new word."
+    exit 1
+fi