From 283ec875aa06ca548749c99191a54cd6d4d26170 Mon Sep 17 00:00:00 2001
From: Michael Delaney <michael@fusepilot.com>
Date: Wed, 1 Feb 2017 02:10:51 -0800
Subject: [PATCH] Missing search.to_lowercase() in grep_case_insensitive

---
 src/ch13-03-improving-our-io-project.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/ch13-03-improving-our-io-project.md b/src/ch13-03-improving-our-io-project.md
index 57e085b..b10a054 100644
--- a/src/ch13-03-improving-our-io-project.md
+++ b/src/ch13-03-improving-our-io-project.md
@@ -168,6 +168,8 @@ number when we sent you chapter 12, we will fix it. /Carol -->
 
 ```rust
 fn grep_case_insensitive<'a>(search: &str, contents: &'a str) -> Vec<&'a str> {
+    let search = search.to_lowercase();
+
     contents.lines()
         .filter(|line| {
             line.to_lowercase().contains(&search)