From 65d9eb6f7e01e298ed52db0c2fb2bd7a8b48ecbd Mon Sep 17 00:00:00 2001
From: FrankHB <frankhb1989@gmail.com>
Date: Sat, 25 Jul 2020 13:02:44 +0800
Subject: [PATCH 1/3] Handled UTF-8 BOM

Fixed #1155 .
---
 src/book/book.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/book/book.rs b/src/book/book.rs
index 071d1589..369c6a07 100644
--- a/src/book/book.rs
+++ b/src/book/book.rs
@@ -264,6 +264,10 @@ fn load_chapter<P: AsRef<Path>>(
             format!("Unable to read \"{}\" ({})", link.name, location.display())
         })?;
 
+        if content.as_bytes().starts_with(b"\xef\xbb\xbf") {
+            content = content[3..].to_string()
+        }
+
         let stripped = location
             .strip_prefix(&src_dir)
             .expect("Chapters are always inside a book");

From 780fb979a0462feca19ba3bb6d0e3c1ccc7fe9dc Mon Sep 17 00:00:00 2001
From: FrankHB <frankhb1989@gmail.com>
Date: Tue, 29 Sep 2020 18:01:06 +0800
Subject: [PATCH 2/3] Avoided the redundant allocation.

Signed-off-by: FrankHB <frankhb1989@gmail.com>
---
 src/book/book.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/book/book.rs b/src/book/book.rs
index 369c6a07..09b51888 100644
--- a/src/book/book.rs
+++ b/src/book/book.rs
@@ -265,7 +265,7 @@ fn load_chapter<P: AsRef<Path>>(
         })?;
 
         if content.as_bytes().starts_with(b"\xef\xbb\xbf") {
-            content = content[3..].to_string()
+            content.replace_range(..3, "");
         }
 
         let stripped = location

From 9e9cf49c503a9d7a47ec57457d0d5875f100b987 Mon Sep 17 00:00:00 2001
From: FrankHB <frankhb1989@gmail.com>
Date: Wed, 7 Oct 2020 22:50:25 +0800
Subject: [PATCH 3/3] Added a test.

Signed-off-by: FrankHB <frankhb1989@gmail.com>
---
 src/book/book.rs | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/src/book/book.rs b/src/book/book.rs
index 09b51888..35f66438 100644
--- a/src/book/book.rs
+++ b/src/book/book.rs
@@ -397,6 +397,29 @@ And here is some \
         assert_eq!(got, should_be);
     }
 
+    #[test]
+    fn load_a_single_chapter_with_utf8_bom_from_disk() {
+        let temp_dir = TempFileBuilder::new().prefix("book").tempdir().unwrap();
+
+        let chapter_path = temp_dir.path().join("chapter_1.md");
+        File::create(&chapter_path)
+            .unwrap()
+            .write_all(("\u{feff}".to_owned() + DUMMY_SRC).as_bytes())
+            .unwrap();
+
+        let link = Link::new("Chapter 1", chapter_path);
+
+        let should_be = Chapter::new(
+            "Chapter 1",
+            DUMMY_SRC.to_string(),
+            "chapter_1.md",
+            Vec::new(),
+        );
+
+        let got = load_chapter(&link, temp_dir.path(), Vec::new()).unwrap();
+        assert_eq!(got, should_be);
+    }
+
     #[test]
     fn cant_load_a_nonexistent_chapter() {
         let link = Link::new("Chapter 1", "/foo/bar/baz.md");