diff --git a/Cargo.lock b/Cargo.lock
index b3895072..6799495d 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -240,7 +240,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "elasticlunr-rs"
-version = "2.3.4"
+version = "2.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "lazy_static 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -248,8 +248,8 @@ dependencies = [
  "serde 1.0.91 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.91 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_json 1.0.39 (registry+https://github.com/rust-lang/crates.io-index)",
- "strum 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "strum_macros 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "strum 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "strum_macros 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -629,7 +629,7 @@ dependencies = [
  "ammonia 2.1.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "chrono 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "clap 2.33.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "elasticlunr-rs 2.3.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "elasticlunr-rs 2.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "env_logger 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "error-chain 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "handlebars 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1263,12 +1263,12 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "strum"
-version = "0.11.0"
+version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "strum_macros"
-version = "0.11.0"
+version = "0.15.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1674,7 +1674,7 @@ dependencies = [
 "checksum difference 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "524cbf6897b527295dff137cec09ecf3a05f4fddffd7dfcd1585403449e74198"
 "checksum digest 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "05f47366984d3ad862010e22c7ce81a7dbcaebbdfb37241a620f8b6596ee135c"
 "checksum either 1.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5527cfe0d098f36e3f8839852688e63c8fff1c90b2b405aef730615f9a7bcf7b"
-"checksum elasticlunr-rs 2.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "a99a310cd1f9770e7bf8e48810c7bcbb0e078c8fb23a8c7bcf0da4c2bf61a455"
+"checksum elasticlunr-rs 2.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "f66a620976c38dbbbcd6355910432cef8b0911b3af86332029752379f0ff7924"
 "checksum env_logger 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "b61fa891024a945da30a9581546e8cfaf5602c7b3f4c137a2805cf388f92075a"
 "checksum error-chain 0.12.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3ab49e9dcb602294bc42f9a7dfc9bc6e936fca4418ea300dbfb84fe16de0b7d9"
 "checksum failure 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "795bd83d3abeb9220f257e597aa0080a508b27533824adf336529648f6abf7e2"
@@ -1791,8 +1791,8 @@ dependencies = [
 "checksum string_cache_codegen 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1eea1eee654ef80933142157fdad9dd8bc43cf7c74e999e369263496f04ff4da"
 "checksum string_cache_shared 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b1884d1bc09741d466d9b14e6d37ac89d6909cbcac41dd9ae982d4d063bbedfc"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
-"checksum strum 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "f6c3a2071519ab6a48f465808c4c1ffdd00dfc8e93111d02b4fc5abab177676e"
-"checksum strum_macros 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8baacebd7b7c9b864d83a6ba7a246232983e277b86fa5cdec77f565715a4b136"
+"checksum strum 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e5d1c33039533f051704951680f1adfd468fd37ac46816ded0d9ee068e60f05f"
+"checksum strum_macros 0.15.0 (registry+https://github.com/rust-lang/crates.io-index)" = "47cd23f5c7dee395a00fa20135e2ec0fffcdfa151c56182966d7a3261343432e"
 "checksum syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d3b891b9015c88c576343b9b3e41c2c11a51c219ef067b264bd9c8aa9b441dad"
 "checksum syn 0.15.34 (registry+https://github.com/rust-lang/crates.io-index)" = "a1393e4a97a19c01e900df2aec855a29f71cf02c402e2f443b8d2747c25c5dbe"
 "checksum synom 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a393066ed9010ebaed60b9eafa373d4b1baac186dd7e008555b0f702b51945b6"
diff --git a/tests/dummy_book/src/SUMMARY.md b/tests/dummy_book/src/SUMMARY.md
index f14f4e21..ee559df6 100644
--- a/tests/dummy_book/src/SUMMARY.md
+++ b/tests/dummy_book/src/SUMMARY.md
@@ -8,6 +8,7 @@
     - [Includes](first/includes.md)
     - [Recursive](first/recursive.md)
     - [Markdown](first/markdown.md)
+    - [Unicode](first/unicode.md)
 - [Second Chapter](second.md)
     - [Nested Chapter](second/nested.md)
 
diff --git a/tests/dummy_book/src/first/unicode.md b/tests/dummy_book/src/first/unicode.md
new file mode 100644
index 00000000..160cc367
--- /dev/null
+++ b/tests/dummy_book/src/first/unicode.md
@@ -0,0 +1,21 @@
+# Unicode stress tests
+
+Please be careful editing, this contains carefully crafted characters.
+
+Two byte character: spatiëring
+
+Combining character: spatiëring
+
+Three byte character: 书こんにちは
+
+Four byte character: 𐌀‮𐌁‮𐌂‮𐌃‮𐌄‮𐌅‮𐌆‮𐌇‮𐌈‬
+
+Right-to-left: مرحبا
+
+Emoticons: 🔊 😍 💜 1️⃣
+
+right-to-left mark: hello באמת!‏
+
+
+Zalgo: ǫ̛̖̱̗̝͈̋͒͋̏ͥͫ̒̆ͩ̏͌̾͊͐ͪ̾̚
+
diff --git a/tests/rendered_output.rs b/tests/rendered_output.rs
index 1a10b4e7..51bf4154 100644
--- a/tests/rendered_output.rs
+++ b/tests/rendered_output.rs
@@ -31,6 +31,7 @@ const TOC_SECOND_LEVEL: &[&str] = &[
     "1.2. Includes",
     "1.3. Recursive",
     "1.4. Markdown",
+    "1.5. Unicode",
     "2.1. Nested Chapter",
 ];
 
@@ -513,7 +514,7 @@ mod search {
         assert_eq!(docs[&some_section]["body"], "");
         assert_eq!(
             docs[&summary]["body"],
-            "Dummy Book Introduction First Chapter Nested Chapter Includes Recursive Markdown Second Chapter Nested Chapter Conclusion"
+            "Dummy Book Introduction First Chapter Nested Chapter Includes Recursive Markdown Unicode Second Chapter Nested Chapter Conclusion"
         );
         assert_eq!(docs[&summary]["breadcrumbs"], "First Chapter » Summary");
         assert_eq!(docs[&conclusion]["body"], "I put <HTML> in here!");
diff --git a/tests/searchindex_fixture.json b/tests/searchindex_fixture.json
index 96831673..e3bd772d 100644
--- a/tests/searchindex_fixture.json
+++ b/tests/searchindex_fixture.json
@@ -13,6 +13,7 @@
     "first/markdown.html#footnotes",
     "first/markdown.html#strikethrough",
     "first/markdown.html#tasklisks",
+    "first/unicode.html#unicode-stress-tests",
     "second.html#second-chapter",
     "second/nested.html#testing-relative-links-for-the-print-page",
     "second/nested.html#some-section",
@@ -47,21 +48,26 @@
           "title": 1
         },
         "13": {
+          "body": 29,
+          "breadcrumbs": 5,
+          "title": 3
+        },
+        "14": {
           "body": 20,
           "breadcrumbs": 2,
           "title": 2
         },
-        "14": {
+        "15": {
           "body": 18,
           "breadcrumbs": 7,
           "title": 5
         },
-        "15": {
+        "16": {
           "body": 0,
           "breadcrumbs": 3,
           "title": 1
         },
-        "16": {
+        "17": {
           "body": 3,
           "breadcrumbs": 1,
           "title": 1
@@ -92,7 +98,7 @@
           "title": 1
         },
         "7": {
-          "body": 15,
+          "body": 16,
           "breadcrumbs": 3,
           "title": 1
         },
@@ -139,27 +145,33 @@
           "title": "Tasklisks"
         },
         "13": {
-          "body": "This makes sure you can insert runnable Rust files. fn main() { println!(\"Hello World!\");\n#\n# // You can even hide lines! :D\n# println!(\"I am hidden! Expand the code snippet to see me\");\n}",
-          "breadcrumbs": "Second Chapter",
+          "body": "Please be careful editing, this contains carefully crafted characters. Two byte character: spatiëring Combining character: spatiëring Three byte character: 书こんにちは Four byte character: 𐌀‮𐌁‮𐌂‮𐌃‮𐌄‮𐌅‮𐌆‮𐌇‮𐌈‬ Right-to-left: مرحبا Emoticons: 🔊 😍 💜 1️⃣ right-to-left mark: hello באמת!‏ Zalgo: ǫ̛̖̱̗̝͈̋͒͋̏ͥͫ̒̆ͩ̏͌̾͊͐ͪ̾̚",
+          "breadcrumbs": "First Chapter » Unicode stress tests",
           "id": "13",
-          "title": "Second Chapter"
+          "title": "Unicode stress tests"
         },
         "14": {
-          "body": "When we link to the first section , it should work on both the print page and the non-print page. A fragment link should work. Link outside . Some image HTML Link",
-          "breadcrumbs": "Second Chapter » Testing relative links for the print page",
+          "body": "This makes sure you can insert runnable Rust files. fn main() { println!(\"Hello World!\");\n#\n# // You can even hide lines! :D\n# println!(\"I am hidden! Expand the code snippet to see me\");\n}",
+          "breadcrumbs": "Second Chapter",
           "id": "14",
-          "title": "Testing relative links for the print page"
+          "title": "Second Chapter"
         },
         "15": {
-          "body": "",
-          "breadcrumbs": "Second Chapter » Some section",
+          "body": "When we link to the first section , it should work on both the print page and the non-print page. A fragment link should work. Link outside . Some image HTML Link",
+          "breadcrumbs": "Second Chapter » Testing relative links for the print page",
           "id": "15",
-          "title": "Some section"
+          "title": "Testing relative links for the print page"
         },
         "16": {
+          "body": "",
+          "breadcrumbs": "Second Chapter » Some section",
+          "id": "16",
+          "title": "Some section"
+        },
+        "17": {
           "body": "I put <HTML> in here!",
           "breadcrumbs": "Conclusion",
-          "id": "16",
+          "id": "17",
           "title": "Conclusion"
         },
         "2": {
@@ -193,7 +205,7 @@
           "title": "Includes"
         },
         "7": {
-          "body": "Dummy Book Introduction First Chapter Nested Chapter Includes Recursive Markdown Second Chapter Nested Chapter Conclusion",
+          "body": "Dummy Book Introduction First Chapter Nested Chapter Includes Recursive Markdown Unicode Second Chapter Nested Chapter Conclusion",
           "breadcrumbs": "First Chapter » Summary",
           "id": "7",
           "title": "Summary"
@@ -211,7 +223,7 @@
           "title": "Tables"
         }
       },
-      "length": 17,
+      "length": 18,
       "save": true
     },
     "fields": [
@@ -223,10 +235,13 @@
       "body": {
         "root": {
           "1": {
-            "df": 1,
+            "df": 2,
             "docs": {
               "10": {
                 "tf": 1.0
+              },
+              "13": {
+                "tf": 1.0
               }
             }
           },
@@ -364,7 +379,7 @@
                 "h": {
                   "df": 1,
                   "docs": {
-                    "14": {
+                    "15": {
                       "tf": 1.0
                     }
                   }
@@ -402,6 +417,22 @@
                 "df": 0,
                 "docs": {}
               }
+            },
+            "y": {
+              "df": 0,
+              "docs": {},
+              "t": {
+                "df": 0,
+                "docs": {},
+                "e": {
+                  "df": 1,
+                  "docs": {
+                    "13": {
+                      "tf": 1.7320508075688772
+                    }
+                  }
+                }
+              }
             }
           },
           "c": {
@@ -411,6 +442,38 @@
               "r": {
                 "df": 0,
                 "docs": {},
+                "e": {
+                  "df": 1,
+                  "docs": {
+                    "13": {
+                      "tf": 1.0
+                    }
+                  },
+                  "f": {
+                    "df": 0,
+                    "docs": {},
+                    "u": {
+                      "df": 0,
+                      "docs": {},
+                      "l": {
+                        "df": 0,
+                        "docs": {},
+                        "l": {
+                          "df": 0,
+                          "docs": {},
+                          "i": {
+                            "df": 1,
+                            "docs": {
+                              "13": {
+                                "tf": 1.0
+                              }
+                            }
+                          }
+                        }
+                      }
+                    }
+                  }
+                },
                 "r": {
                   "df": 0,
                   "docs": {},
@@ -459,7 +522,7 @@
                       "r": {
                         "df": 4,
                         "docs": {
-                          "13": {
+                          "14": {
                             "tf": 1.0
                           },
                           "2": {
@@ -475,6 +538,26 @@
                       }
                     }
                   }
+                },
+                "r": {
+                  "a": {
+                    "c": {
+                      "df": 0,
+                      "docs": {},
+                      "t": {
+                        "df": 1,
+                        "docs": {
+                          "13": {
+                            "tf": 2.23606797749979
+                          }
+                        }
+                      }
+                    },
+                    "df": 0,
+                    "docs": {}
+                  },
+                  "df": 0,
+                  "docs": {}
                 }
               },
               "df": 0,
@@ -487,7 +570,7 @@
                 "e": {
                   "df": 2,
                   "docs": {
-                    "13": {
+                    "14": {
                       "tf": 1.0
                     },
                     "4": {
@@ -498,6 +581,26 @@
               },
               "df": 0,
               "docs": {},
+              "m": {
+                "b": {
+                  "df": 0,
+                  "docs": {},
+                  "i": {
+                    "df": 0,
+                    "docs": {},
+                    "n": {
+                      "df": 1,
+                      "docs": {
+                        "13": {
+                          "tf": 1.0
+                        }
+                      }
+                    }
+                  }
+                },
+                "df": 0,
+                "docs": {}
+              },
               "n": {
                 "c": {
                   "df": 0,
@@ -511,7 +614,7 @@
                       "s": {
                         "df": 2,
                         "docs": {
-                          "16": {
+                          "17": {
                             "tf": 1.0
                           },
                           "7": {
@@ -523,14 +626,54 @@
                   }
                 },
                 "df": 0,
-                "docs": {}
+                "docs": {},
+                "t": {
+                  "a": {
+                    "df": 0,
+                    "docs": {},
+                    "i": {
+                      "df": 0,
+                      "docs": {},
+                      "n": {
+                        "df": 1,
+                        "docs": {
+                          "13": {
+                            "tf": 1.0
+                          }
+                        }
+                      }
+                    }
+                  },
+                  "df": 0,
+                  "docs": {}
+                }
               }
+            },
+            "r": {
+              "a": {
+                "df": 0,
+                "docs": {},
+                "f": {
+                  "df": 0,
+                  "docs": {},
+                  "t": {
+                    "df": 1,
+                    "docs": {
+                      "13": {
+                        "tf": 1.0
+                      }
+                    }
+                  }
+                }
+              },
+              "df": 0,
+              "docs": {}
             }
           },
           "d": {
             "df": 1,
             "docs": {
-              "13": {
+              "14": {
                 "tf": 1.0
               }
             },
@@ -561,8 +704,56 @@
           "df": 0,
           "docs": {},
           "e": {
+            "d": {
+              "df": 0,
+              "docs": {},
+              "i": {
+                "df": 0,
+                "docs": {},
+                "t": {
+                  "df": 1,
+                  "docs": {
+                    "13": {
+                      "tf": 1.0
+                    }
+                  }
+                }
+              }
+            },
             "df": 0,
             "docs": {},
+            "m": {
+              "df": 0,
+              "docs": {},
+              "o": {
+                "df": 0,
+                "docs": {},
+                "t": {
+                  "df": 0,
+                  "docs": {},
+                  "i": {
+                    "c": {
+                      "df": 0,
+                      "docs": {},
+                      "o": {
+                        "df": 0,
+                        "docs": {},
+                        "n": {
+                          "df": 1,
+                          "docs": {
+                            "13": {
+                              "tf": 1.0
+                            }
+                          }
+                        }
+                      }
+                    },
+                    "df": 0,
+                    "docs": {}
+                  }
+                }
+              }
+            },
             "v": {
               "df": 0,
               "docs": {},
@@ -572,7 +763,7 @@
                 "n": {
                   "df": 1,
                   "docs": {
-                    "13": {
+                    "14": {
                       "tf": 1.0
                     }
                   }
@@ -613,7 +804,7 @@
                     "d": {
                       "df": 1,
                       "docs": {
-                        "13": {
+                        "14": {
                           "tf": 1.0
                         }
                       }
@@ -642,7 +833,7 @@
                     "0": {
                       "tf": 1.0
                     },
-                    "13": {
+                    "14": {
                       "tf": 1.0
                     },
                     "4": {
@@ -660,7 +851,7 @@
                   "t": {
                     "df": 3,
                     "docs": {
-                      "14": {
+                      "15": {
                         "tf": 1.0
                       },
                       "2": {
@@ -677,7 +868,7 @@
             "n": {
               "df": 1,
               "docs": {
-                "13": {
+                "14": {
                   "tf": 1.0
                 }
               }
@@ -712,6 +903,18 @@
                     }
                   }
                 }
+              },
+              "u": {
+                "df": 0,
+                "docs": {},
+                "r": {
+                  "df": 1,
+                  "docs": {
+                    "13": {
+                      "tf": 1.0
+                    }
+                  }
+                }
               }
             },
             "r": {
@@ -733,7 +936,7 @@
                         "t": {
                           "df": 1,
                           "docs": {
-                            "14": {
+                            "15": {
                               "tf": 1.0
                             }
                           }
@@ -773,6 +976,22 @@
             "e": {
               "df": 0,
               "docs": {},
+              "l": {
+                "df": 0,
+                "docs": {},
+                "l": {
+                  "df": 0,
+                  "docs": {},
+                  "o": {
+                    "df": 1,
+                    "docs": {
+                      "13": {
+                        "tf": 1.0
+                      }
+                    }
+                  }
+                }
+              },
               "r": {
                 "df": 0,
                 "docs": {},
@@ -790,7 +1009,7 @@
                     "0": {
                       "tf": 1.0
                     },
-                    "16": {
+                    "17": {
                       "tf": 1.0
                     }
                   }
@@ -808,7 +1027,7 @@
                     "n": {
                       "df": 1,
                       "docs": {
-                        "13": {
+                        "14": {
                           "tf": 1.0
                         }
                       }
@@ -820,7 +1039,7 @@
                 "e": {
                   "df": 1,
                   "docs": {
-                    "13": {
+                    "14": {
                       "tf": 1.0
                     }
                   }
@@ -838,7 +1057,7 @@
                 "l": {
                   "df": 1,
                   "docs": {
-                    "14": {
+                    "15": {
                       "tf": 1.0
                     }
                   }
@@ -856,7 +1075,7 @@
                 "g": {
                   "df": 1,
                   "docs": {
-                    "14": {
+                    "15": {
                       "tf": 1.0
                     }
                   }
@@ -919,7 +1138,7 @@
                     "t": {
                       "df": 1,
                       "docs": {
-                        "13": {
+                        "14": {
                           "tf": 1.0
                         }
                       }
@@ -1007,6 +1226,22 @@
           "l": {
             "df": 0,
             "docs": {},
+            "e": {
+              "df": 0,
+              "docs": {},
+              "f": {
+                "df": 0,
+                "docs": {},
+                "t": {
+                  "df": 1,
+                  "docs": {
+                    "13": {
+                      "tf": 1.4142135623730951
+                    }
+                  }
+                }
+              }
+            },
             "i": {
               "df": 0,
               "docs": {},
@@ -1019,7 +1254,7 @@
                     "10": {
                       "tf": 1.4142135623730951
                     },
-                    "13": {
+                    "14": {
                       "tf": 1.0
                     }
                   }
@@ -1027,7 +1262,7 @@
                 "k": {
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