diff --git a/mode/rust/index.html b/mode/rust/index.html
index 407e84f2cf161dd473bcdcc12b2b7b55e8e5fe2d..c8eac943ce10ca0e3fc28058cddc356069571e63 100644
--- a/mode/rust/index.html
+++ b/mode/rust/index.html
@@ -6,6 +6,7 @@
 
 <link rel="stylesheet" href="../../lib/codemirror.css">
 <script src="../../lib/codemirror.js"></script>
+<script src="../../addon/mode/simple.js"></script>
 <script src="rust.js"></script>
 <style type="text/css">.CodeMirror {border-top: 1px solid black; border-bottom: 1px solid black;}</style>
 <div id=nav>
@@ -52,7 +53,12 @@ fn check_crate(x: int) {
 
     <script>
       var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
-        lineNumbers: true
+        lineNumbers: true,
+        lineWrapping: true,
+        indentUnit: 4,
+        tabSize: 2,
+        autofocus: true,
+        mode: "rust"
       });
     </script>
 
diff --git a/mode/rust/rust.js b/mode/rust/rust.js
index 4970b2f7cba8e7061fd2bd43cb8e0b07aa672249..df8d2447180a0a1282795cba547a845a75b182a6 100644
--- a/mode/rust/rust.js
+++ b/mode/rust/rust.js
@@ -11,441 +11,44 @@
 })(function(CodeMirror) {
 "use strict";
 
-CodeMirror.defineMode("rust", function() {
-  var indentUnit = 4, altIndentUnit = 2;
-  var valKeywords = {
-    "if": "if-style", "while": "if-style", "loop": "else-style", "else": "else-style",
-    "do": "else-style", "ret": "else-style", "fail": "else-style",
-    "break": "atom", "cont": "atom", "const": "let", "resource": "fn",
-    "let": "let", "fn": "fn", "for": "for", "alt": "alt", "iface": "iface",
-    "impl": "impl", "type": "type", "enum": "enum", "mod": "mod",
-    "as": "op", "true": "atom", "false": "atom", "assert": "op", "check": "op",
-    "claim": "op", "native": "ignore", "unsafe": "ignore", "import": "else-style",
-    "export": "else-style", "copy": "op", "log": "op", "log_err": "op",
-    "use": "op", "bind": "op", "self": "atom", "struct": "enum"
-  };
-  var typeKeywords = function() {
-    var keywords = {"fn": "fn", "block": "fn", "obj": "obj"};
-    var atoms = "bool i8 i16 i32 i64 u8 u16 u32 u64 f32 f64 str char isize usize".split(" ");
-    for (var i = 0, e = atoms.length; i < e; ++i) keywords[atoms[i]] = "atom";
-    return keywords;
-  }();
-  var operatorChar = /[+\-*&%=<>!?|\.@]/;
-
-  // Tokenizer
-
-  // Used as scratch variable to communicate multiple values without
-  // consing up tons of objects.
-  var tcat, content;
-  function r(tc, style) {
-    tcat = tc;
-    return style;
-  }
-
-  function tokenBase(stream, state) {
-    var ch = stream.next();
-    if (ch == '"') {
-      state.tokenize = tokenString;
-      return state.tokenize(stream, state);
-    }
-    if (ch == "'") {
-      tcat = "atom";
-      if (stream.eat("\\")) {
-        if (stream.skipTo("'")) { stream.next(); return "string"; }
-        else { return "error"; }
-      } else {
-        stream.next();
-        return stream.eat("'") ? "string" : "error";
-      }
-    }
-    if (ch == "/") {
-      if (stream.eat("/")) { stream.skipToEnd(); return "comment"; }
-      if (stream.eat("*")) {
-        state.tokenize = tokenComment(1);
-        return state.tokenize(stream, state);
-      }
-    }
-    if (ch == "#") {
-      if (stream.eat("[")) { tcat = "open-attr"; return null; }
-      stream.eatWhile(/\w/);
-      return r("macro", "meta");
-    }
-    if (ch == ":" && stream.match(":<")) {
-      return r("op", null);
-    }
-    if (ch.match(/\d/) || (ch == "." && stream.eat(/\d/))) {
-      var flp = false;
-      if (!stream.match(/^x[\da-f]+/i) && !stream.match(/^b[01]+/)) {
-        stream.eatWhile(/\d/);
-        if (stream.eat(".")) { flp = true; stream.eatWhile(/\d/); }
-        if (stream.match(/^e[+\-]?\d+/i)) { flp = true; }
-      }
-      if (flp) stream.match(/^f(?:32|64)/);
-      else stream.match(/^[ui](?:8|16|32|64)/);
-      return r("atom", "number");
-    }
-    if (ch.match(/[()\[\]{}:;,]/)) return r(ch, null);
-    if (ch == "-" && stream.eat(">")) return r("->", null);
-    if (ch.match(operatorChar)) {
-      stream.eatWhile(operatorChar);
-      return r("op", null);
-    }
-    stream.eatWhile(/\w/);
-    content = stream.current();
-    if (stream.match(/^::\w/)) {
-      stream.backUp(1);
-      return r("prefix", "variable-2");
-    }
-    if (state.keywords.propertyIsEnumerable(content))
-      return r(state.keywords[content], content.match(/true|false/) ? "atom" : "keyword");
-    return r("name", "variable");
-  }
-
-  function tokenString(stream, state) {
-    var ch, escaped = false;
-    while (ch = stream.next()) {
-      if (ch == '"' && !escaped) {
-        state.tokenize = tokenBase;
-        return r("atom", "string");
-      }
-      escaped = !escaped && ch == "\\";
-    }
-    // Hack to not confuse the parser when a string is split in
-    // pieces.
-    return r("op", "string");
-  }
-
-  function tokenComment(depth) {
-    return function(stream, state) {
-      var lastCh = null, ch;
-      while (ch = stream.next()) {
-        if (ch == "/" && lastCh == "*") {
-          if (depth == 1) {
-            state.tokenize = tokenBase;
-            break;
-          } else {
-            state.tokenize = tokenComment(depth - 1);
-            return state.tokenize(stream, state);
-          }
-        }
-        if (ch == "*" && lastCh == "/") {
-          state.tokenize = tokenComment(depth + 1);
-          return state.tokenize(stream, state);
-        }
-        lastCh = ch;
-      }
-      return "comment";
-    };
-  }
-
-  // Parser
-
-  var cx = {state: null, stream: null, marked: null, cc: null};
-  function pass() {
-    for (var i = arguments.length - 1; i >= 0; i--) cx.cc.push(arguments[i]);
-  }
-  function cont() {
-    pass.apply(null, arguments);
-    return true;
-  }
-
-  function pushlex(type, info) {
-    var result = function() {
-      var state = cx.state;
-      state.lexical = {indented: state.indented, column: cx.stream.column(),
-                       type: type, prev: state.lexical, info: info};
-    };
-    result.lex = true;
-    return result;
-  }
-  function poplex() {
-    var state = cx.state;
-    if (state.lexical.prev) {
-      if (state.lexical.type == ")")
-        state.indented = state.lexical.indented;
-      state.lexical = state.lexical.prev;
-    }
-  }
-  function typecx() { cx.state.keywords = typeKeywords; }
-  function valcx() { cx.state.keywords = valKeywords; }
-  poplex.lex = typecx.lex = valcx.lex = true;
-
-  function commasep(comb, end) {
-    function more(type) {
-      if (type == ",") return cont(comb, more);
-      if (type == end) return cont();
-      return cont(more);
-    }
-    return function(type) {
-      if (type == end) return cont();
-      return pass(comb, more);
-    };
-  }
-
-  function stat_of(comb, tag) {
-    return cont(pushlex("stat", tag), comb, poplex, block);
-  }
-  function block(type) {
-    if (type == "}") return cont();
-    if (type == "let") return stat_of(letdef1, "let");
-    if (type == "fn") return stat_of(fndef);
-    if (type == "type") return cont(pushlex("stat"), tydef, endstatement, poplex, block);
-    if (type == "enum") return stat_of(enumdef);
-    if (type == "mod") return stat_of(mod);
-    if (type == "iface") return stat_of(iface);
-    if (type == "impl") return stat_of(impl);
-    if (type == "open-attr") return cont(pushlex("]"), commasep(expression, "]"), poplex);
-    if (type == "ignore" || type.match(/[\]\);,]/)) return cont(block);
-    return pass(pushlex("stat"), expression, poplex, endstatement, block);
-  }
-  function endstatement(type) {
-    if (type == ";") return cont();
-    return pass();
-  }
-  function expression(type) {
-    if (type == "atom" || type == "name") return cont(maybeop);
-    if (type == "{") return cont(pushlex("}"), exprbrace, poplex);
-    if (type.match(/[\[\(]/)) return matchBrackets(type, expression);
-    if (type.match(/[\]\)\};,]/)) return pass();
-    if (type == "if-style") return cont(expression, expression);
-    if (type == "else-style" || type == "op") return cont(expression);
-    if (type == "for") return cont(pattern, maybetype, inop, expression, expression);
-    if (type == "alt") return cont(expression, altbody);
-    if (type == "fn") return cont(fndef);
-    if (type == "macro") return cont(macro);
-    return cont();
-  }
-  function maybeop(type) {
-    if (content == ".") return cont(maybeprop);
-    if (content == "::<"){return cont(typarams, maybeop);}
-    if (type == "op" || content == ":") return cont(expression);
-    if (type == "(" || type == "[") return matchBrackets(type, expression);
-    return pass();
-  }
-  function maybeprop() {
-    if (content.match(/^\w+$/)) {cx.marked = "variable"; return cont(maybeop);}
-    return pass(expression);
-  }
-  function exprbrace(type) {
-    if (type == "op") {
-      if (content == "|") return cont(blockvars, poplex, pushlex("}", "block"), block);
-      if (content == "||") return cont(poplex, pushlex("}", "block"), block);
-    }
-    if (content == "mutable" || (content.match(/^\w+$/) && cx.stream.peek() == ":"
-                                 && !cx.stream.match("::", false)))
-      return pass(record_of(expression));
-    return pass(block);
-  }
-  function record_of(comb) {
-    function ro(type) {
-      if (content == "mutable" || content == "with") {cx.marked = "keyword"; return cont(ro);}
-      if (content.match(/^\w*$/)) {cx.marked = "variable"; return cont(ro);}
-      if (type == ":") return cont(comb, ro);
-      if (type == "}") return cont();
-      return cont(ro);
-    }
-    return ro;
-  }
-  function blockvars(type) {
-    if (type == "name") {cx.marked = "def"; return cont(blockvars);}
-    if (type == "op" && content == "|") return cont();
-    return cont(blockvars);
-  }
-
-  function letdef1(type) {
-    if (type.match(/[\]\)\};]/)) return cont();
-    if (content == "=") return cont(expression, letdef2);
-    if (type == ",") return cont(letdef1);
-    return pass(pattern, maybetype, letdef1);
-  }
-  function letdef2(type) {
-    if (type.match(/[\]\)\};,]/)) return pass(letdef1);
-    else return pass(expression, letdef2);
-  }
-  function maybetype(type) {
-    if (type == ":") return cont(typecx, rtype, valcx);
-    return pass();
+CodeMirror.defineSimpleMode("rust",{
+  start:[
+    // string and byte string
+    {regex: /b?"(?:[^\\]|\\.)*?"/, token: "string"},
+    // raw string and raw byte string
+    {regex: /(b?r)(#*)(".*)("\2)/, token: ["string", "string", "string", "string"]},
+    // character
+    {regex: /'(?:[^'\\]|\\(?:[nrt0'"]|x[\da-fA-F]{2}|u\{[\da-fA-F]{6}\}))'/, token: "string-2"},
+    // byte
+    {regex: /b'(?:[^']|\\(?:['\\nrt0]|x[\da-fA-F]{2}))'/, token: "string-2"},
+
+    {regex: /(?:(?:[0-9][0-9_]*)(?:(?:[Ee][+-]?[0-9_]+)|\.[0-9_]+(?:[Ee][+-]?[0-9_]+)?)(?:f32|f64)?)|(?:0(?:b[01_]+|(?:o[0-7_]+)|(?:x[0-9a-fA-F_]+))|(?:[0-9][0-9_]*))(?:u8|u16|u32|u64|i8|i16|i32|i64|isize|usize)?/,
+     token: "number"},
+    {regex: /(let\s+(?:mut\s+)?)([a-zA-Z_][a-zA-Z0-9_]*)/, token: ["keyword", "def"]},
+    {regex: /(?:abstract|alignof|as|box|break|continue|const|crate|do|else|enum|extern|for|final|if|impl|in|loop|macro|match|mod|move|offsetof|override|priv|proc|pub|pure|ref|return|self|sizeof|static|struct|super|trait|type|typeof|unsafe|unsized|use|virtual|where|while|yield)\b/, token: "keyword"},
+    {regex: /\b(?:Self|isize|usize|char|bool|u8|u16|u32|u64|f16|f32|f64|i8|i16|i32|i64|str|Option)\b/, token: "atom"},
+    {regex: /\b(?:true|false|Some|None|Ok|Err)\b/, token: "builtin"},
+    {regex: /\b(fn)(\s+)([a-zA-Z_][a-zA-Z0-9_]*)/,
+     token: ["keyword", null ,"def"]},
+    {regex: /#!?\[.*\]/, token: "attribute"},
+    {regex: /\/\/.*/, token: "comment"},
+    {regex: /\/\*/, token: "comment", next: "comment"},
+    {regex: /[-+\/*=<>!]+/, token: "operator"},
+    {regex: /[a-zA-Z_]\w*!/,token: "variable-3"},
+    {regex: /[a-zA-Z_]\w*/, token: "variable"},
+    {regex: /[\{\[\(]/, indent: true},
+    {regex: /[\}\]\)]/, dedent: true},
+  ],
+  comment: [
+    {regex: /.*?\*\//, token: "comment", next: "start"},
+    {regex: /.*/, token: "comment"}
+  ],
+  meta: {
+    dontIndentStates: ["comment"],
+    lineComment: "//"
   }
-  function inop(type) {
-    if (type == "name" && content == "in") {cx.marked = "keyword"; return cont();}
-    return pass();
-  }
-  function fndef(type) {
-    if (content == "@" || content == "~") {cx.marked = "keyword"; return cont(fndef);}
-    if (type == "name") {cx.marked = "def"; return cont(fndef);}
-    if (content == "<") return cont(typarams, fndef);
-    if (type == "{") return pass(expression);
-    if (type == "(") return cont(pushlex(")"), commasep(argdef, ")"), poplex, fndef);
-    if (type == "->") return cont(typecx, rtype, valcx, fndef);
-    if (type == ";") return cont();
-    return cont(fndef);
-  }
-  function tydef(type) {
-    if (type == "name") {cx.marked = "def"; return cont(tydef);}
-    if (content == "<") return cont(typarams, tydef);
-    if (content == "=") return cont(typecx, rtype, valcx);
-    return cont(tydef);
-  }
-  function enumdef(type) {
-    if (type == "name") {cx.marked = "def"; return cont(enumdef);}
-    if (content == "<") return cont(typarams, enumdef);
-    if (content == "=") return cont(typecx, rtype, valcx, endstatement);
-    if (type == "{") return cont(pushlex("}"), typecx, enumblock, valcx, poplex);
-    return cont(enumdef);
-  }
-  function enumblock(type) {
-    if (type == "}") return cont();
-    if (type == "(") return cont(pushlex(")"), commasep(rtype, ")"), poplex, enumblock);
-    if (content.match(/^\w+$/)) cx.marked = "def";
-    return cont(enumblock);
-  }
-  function mod(type) {
-    if (type == "name") {cx.marked = "def"; return cont(mod);}
-    if (type == "{") return cont(pushlex("}"), block, poplex);
-    return pass();
-  }
-  function iface(type) {
-    if (type == "name") {cx.marked = "def"; return cont(iface);}
-    if (content == "<") return cont(typarams, iface);
-    if (type == "{") return cont(pushlex("}"), block, poplex);
-    return pass();
-  }
-  function impl(type) {
-    if (content == "<") return cont(typarams, impl);
-    if (content == "of" || content == "for") {cx.marked = "keyword"; return cont(rtype, impl);}
-    if (type == "name") {cx.marked = "def"; return cont(impl);}
-    if (type == "{") return cont(pushlex("}"), block, poplex);
-    return pass();
-  }
-  function typarams() {
-    if (content == ">") return cont();
-    if (content == ",") return cont(typarams);
-    if (content == ":") return cont(rtype, typarams);
-    return pass(rtype, typarams);
-  }
-  function argdef(type) {
-    if (type == "name") {cx.marked = "def"; return cont(argdef);}
-    if (type == ":") return cont(typecx, rtype, valcx);
-    return pass();
-  }
-  function rtype(type) {
-    if (type == "name") {cx.marked = "variable-3"; return cont(rtypemaybeparam); }
-    if (content == "mutable") {cx.marked = "keyword"; return cont(rtype);}
-    if (type == "atom") return cont(rtypemaybeparam);
-    if (type == "op" || type == "obj") return cont(rtype);
-    if (type == "fn") return cont(fntype);
-    if (type == "{") return cont(pushlex("{"), record_of(rtype), poplex);
-    return matchBrackets(type, rtype);
-  }
-  function rtypemaybeparam() {
-    if (content == "<") return cont(typarams);
-    return pass();
-  }
-  function fntype(type) {
-    if (type == "(") return cont(pushlex("("), commasep(rtype, ")"), poplex, fntype);
-    if (type == "->") return cont(rtype);
-    return pass();
-  }
-  function pattern(type) {
-    if (type == "name") {cx.marked = "def"; return cont(patternmaybeop);}
-    if (type == "atom") return cont(patternmaybeop);
-    if (type == "op") return cont(pattern);
-    if (type.match(/[\]\)\};,]/)) return pass();
-    return matchBrackets(type, pattern);
-  }
-  function patternmaybeop(type) {
-    if (type == "op" && content == ".") return cont();
-    if (content == "to") {cx.marked = "keyword"; return cont(pattern);}
-    else return pass();
-  }
-  function altbody(type) {
-    if (type == "{") return cont(pushlex("}", "alt"), altblock1, poplex);
-    return pass();
-  }
-  function altblock1(type) {
-    if (type == "}") return cont();
-    if (type == "|") return cont(altblock1);
-    if (content == "when") {cx.marked = "keyword"; return cont(expression, altblock2);}
-    if (type.match(/[\]\);,]/)) return cont(altblock1);
-    return pass(pattern, altblock2);
-  }
-  function altblock2(type) {
-    if (type == "{") return cont(pushlex("}", "alt"), block, poplex, altblock1);
-    else return pass(altblock1);
-  }
-
-  function macro(type) {
-    if (type.match(/[\[\(\{]/)) return matchBrackets(type, expression);
-    return pass();
-  }
-  function matchBrackets(type, comb) {
-    if (type == "[") return cont(pushlex("]"), commasep(comb, "]"), poplex);
-    if (type == "(") return cont(pushlex(")"), commasep(comb, ")"), poplex);
-    if (type == "{") return cont(pushlex("}"), commasep(comb, "}"), poplex);
-    return cont();
-  }
-
-  function parse(state, stream, style) {
-    var cc = state.cc;
-    // Communicate our context to the combinators.
-    // (Less wasteful than consing up a hundred closures on every call.)
-    cx.state = state; cx.stream = stream; cx.marked = null, cx.cc = cc;
-
-    while (true) {
-      var combinator = cc.length ? cc.pop() : block;
-      if (combinator(tcat)) {
-        while(cc.length && cc[cc.length - 1].lex)
-          cc.pop()();
-        return cx.marked || style;
-      }
-    }
-  }
-
-  return {
-    startState: function() {
-      return {
-        tokenize: tokenBase,
-        cc: [],
-        lexical: {indented: -indentUnit, column: 0, type: "top", align: false},
-        keywords: valKeywords,
-        indented: 0
-      };
-    },
-
-    token: function(stream, state) {
-      if (stream.sol()) {
-        if (!state.lexical.hasOwnProperty("align"))
-          state.lexical.align = false;
-        state.indented = stream.indentation();
-      }
-      if (stream.eatSpace()) return null;
-      tcat = content = null;
-      var style = state.tokenize(stream, state);
-      if (style == "comment") return style;
-      if (!state.lexical.hasOwnProperty("align"))
-        state.lexical.align = true;
-      if (tcat == "prefix") return style;
-      if (!content) content = stream.current();
-      return parse(state, stream, style);
-    },
-
-    indent: function(state, textAfter) {
-      if (state.tokenize != tokenBase) return 0;
-      var firstChar = textAfter && textAfter.charAt(0), lexical = state.lexical,
-          type = lexical.type, closing = firstChar == type;
-      if (type == "stat") return lexical.indented + indentUnit;
-      if (lexical.align) return lexical.column + (closing ? 0 : 1);
-      return lexical.indented + (closing ? 0 : (lexical.info == "alt" ? altIndentUnit : indentUnit));
-    },
-
-    electricChars: "{}",
-    blockCommentStart: "/*",
-    blockCommentEnd: "*/",
-    lineComment: "//",
-    fold: "brace"
-  };
 });
 
-CodeMirror.defineMIME("text/x-rustsrc", "rust");
 
+CodeMirror.defineMIME("text/x-rustsrc", "rust");
 });
diff --git a/mode/rust/test.js b/mode/rust/test.js
new file mode 100644
index 0000000000000000000000000000000000000000..858c6be0f59480ea4ac5cb158624b1e2eece09bf
--- /dev/null
+++ b/mode/rust/test.js
@@ -0,0 +1,38 @@
+
+(function() {
+  var mode = CodeMirror.getMode({indentUnit: 4}, "rust");
+  function MT(name) {test.mode(name, mode, Array.prototype.slice.call(arguments, 1));}
+
+  MT('integer_test',
+     '[number 123i32]',
+     '[number 123u32]',
+     '[number 123_u32]',
+     '[number 0xff_u8]',
+     '[number 0o70_i16]',
+     '[number 0b1111_1111_1001_0000_i32]',
+     '[number 0usize]');
+
+  MT('float_test',
+     '[number 123.0f64]',
+     '[number 0.1f64]',
+     '[number 0.1f32]',
+     '[number 12E+99_f64]');
+
+  MT('string-literals-test',
+     '[string "foo"]',
+     '[string r"foo"]',
+     '[string "\\"foo\\""]',
+     '[string r#""foo""#]',
+     '[string "foo #\\"# bar"]',
+     '[string r##"foo #"# bar"##]',
+
+     '[string b"foo"]',
+     '[string br"foo"]',
+     '[string b"\\"foo\\""]',
+     '[string br#""foo""#]',
+     '[string br##"foo #" bar"##]',
+
+     "[string-2 'h']",
+     "[string-2 b'h']");
+
+})();
diff --git a/test/index.html b/test/index.html
index eb7412645e9445930a272f45dd51b099f138cb91..310e88519d167b03c4045c4dae30d189226883c6 100644
--- a/test/index.html
+++ b/test/index.html
@@ -15,6 +15,7 @@
 <script src="../addon/edit/matchbrackets.js"></script>
 <script src="../addon/hint/sql-hint.js"></script>
 <script src="../addon/comment/comment.js"></script>
+<script src="../addon/mode/simple.js"></script>
 <script src="../mode/css/css.js"></script>
 <script src="../mode/clike/clike.js"></script>
 <!-- clike must be after css or vim and sublime tests will fail -->
@@ -36,6 +37,7 @@
 <script src="../keymap/emacs.js"></script>
 <script src="../keymap/sublime.js"></script>
 <script src="../keymap/vim.js"></script>
+<script src="../mode/rust/rust.js"></script>
 
 <style type="text/css">
   .ok {color: #090;}
@@ -113,6 +115,7 @@
     <script src="../mode/verilog/test.js"></script>
     <script src="../mode/xml/test.js"></script>
     <script src="../mode/xquery/test.js"></script>
+    <script src="../mode/rust/test.js"></script>
     <script src="../addon/mode/multiplex_test.js"></script>
     <script src="emacs_test.js"></script>
     <script src="sql-hint-test.js"></script>