diff --git a/web/demo.cc b/web/demo.cc
index daf8255910b3fccf91facee079d171685ff3efc1..e44657eff5439205e3cc4309f8f0f62f0aadecf6 100644
--- a/web/demo.cc
+++ b/web/demo.cc
@@ -1,12 +1,12 @@
 
 // This is a DEMO. You may use any C++17 syntax here. 
 
-// 先用这种语法定义每一个单独的Activity。
+// 先演示一下定义一个Activity的正常语法。
 //                  (ActivityName,   ClassName_In_Our_Code            , DependencyEntityName)
 Activity HaveASleep ("HaveASleep", "FleetAGC.Activities.DelayActivity", "");
 HaveASleep.addInputSetting("Timespan", "60");
 
-// 不想把上面的定义复制粘贴很多遍。那就偷个懒。
+// 但是如果你要定义很多很多Activity,建议用这种方法偷懒。
 #define DEFINE_ACTIVITY(name, entityName) \
         Activity name (#name, "FleetAGC.Activities.DelayActivity", entityName); \
         name.addInputSetting("Timespan", "60");
@@ -26,7 +26,7 @@ DEFINE_ACTIVITY(ODFBSyncClient, "M365Poc.SPO.ODFBSyncClient")
 // 把定义好的Activity组合一下,其中箭头表示串行,竖线表示并行。
 auto block1 = GridManager >> FarmsAndTennats >> (CSC | FastSearch);
 auto block2 = Microservices | MonitorAndAlert;
-auto completeFlow = block1 | AuthAndProvision | block2 | SPOTooling | UXCDNFailover | ODFBSyncClient;
+auto completeFlow = block1 | AuthAndProvision | block2 >> SPOTooling | UXCDNFailover | ODFBSyncClient;
 
 // 最后指定一下workflow的名字就可以了。
 println(completeFlow.generateXaml("FleetAGC.Workflows.SPOBuildoutPOCWorkflow"));
diff --git a/web/index.php b/web/index.php
index f32eac706db012c026800a12581bc5d17b4bce51..9715e647369101a919ce7f78e5bcaed59ea88929 100644
--- a/web/index.php
+++ b/web/index.php
@@ -4,6 +4,7 @@
     <meta charset="UTF-8">
     <link rel="stylesheet" href="lib/codemirror.css">
     <script src="lib/codemirror.js"></script>
+    <script src="lib/clike/clike.js"></script>
 </head>
 <body>
 <h1>Generate cis xaml</h1>
@@ -51,7 +52,7 @@ else {
         var editor = CodeMirror.fromTextArea(document.getElementById("txa_content"), {
           lineNumbers: true,
 //          extraKeys: {"Ctrl-Space": "autocomplete"},
-          mode: "c++", 
+          mode: "text/x-c++src", 
         });
     </script>
 </body>
diff --git a/web/lib/clike/clike.js b/web/lib/clike/clike.js
new file mode 100644
index 0000000000000000000000000000000000000000..15c0fd1196185075ae30abb57e713be87f4332cb
--- /dev/null
+++ b/web/lib/clike/clike.js
@@ -0,0 +1,935 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../../lib/codemirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+"use strict";
+
+function Context(indented, column, type, info, align, prev) {
+  this.indented = indented;
+  this.column = column;
+  this.type = type;
+  this.info = info;
+  this.align = align;
+  this.prev = prev;
+}
+function pushContext(state, col, type, info) {
+  var indent = state.indented;
+  if (state.context && state.context.type == "statement" && type != "statement")
+    indent = state.context.indented;
+  return state.context = new Context(indent, col, type, info, null, state.context);
+}
+function popContext(state) {
+  var t = state.context.type;
+  if (t == ")" || t == "]" || t == "}")
+    state.indented = state.context.indented;
+  return state.context = state.context.prev;
+}
+
+function typeBefore(stream, state, pos) {
+  if (state.prevToken == "variable" || state.prevToken == "type") return true;
+  if (/\S(?:[^- ]>|[*\]])\s*$|\*$/.test(stream.string.slice(0, pos))) return true;
+  if (state.typeAtEndOfLine && stream.column() == stream.indentation()) return true;
+}
+
+function isTopScope(context) {
+  for (;;) {
+    if (!context || context.type == "top") return true;
+    if (context.type == "}" && context.prev.info != "namespace") return false;
+    context = context.prev;
+  }
+}
+
+CodeMirror.defineMode("clike", function(config, parserConfig) {
+  var indentUnit = config.indentUnit,
+      statementIndentUnit = parserConfig.statementIndentUnit || indentUnit,
+      dontAlignCalls = parserConfig.dontAlignCalls,
+      keywords = parserConfig.keywords || {},
+      types = parserConfig.types || {},
+      builtin = parserConfig.builtin || {},
+      blockKeywords = parserConfig.blockKeywords || {},
+      defKeywords = parserConfig.defKeywords || {},
+      atoms = parserConfig.atoms || {},
+      hooks = parserConfig.hooks || {},
+      multiLineStrings = parserConfig.multiLineStrings,
+      indentStatements = parserConfig.indentStatements !== false,
+      indentSwitch = parserConfig.indentSwitch !== false,
+      namespaceSeparator = parserConfig.namespaceSeparator,
+      isPunctuationChar = parserConfig.isPunctuationChar || /[\[\]{}\(\),;\:\.]/,
+      numberStart = parserConfig.numberStart || /[\d\.]/,
+      number = parserConfig.number || /^(?:0x[a-f\d]+|0b[01]+|(?:\d+\.?\d*|\.\d+)(?:e[-+]?\d+)?)(u|ll?|l|f)?/i,
+      isOperatorChar = parserConfig.isOperatorChar || /[+\-*&%=<>!?|\/]/,
+      isIdentifierChar = parserConfig.isIdentifierChar || /[\w\$_\xa1-\uffff]/,
+      // An optional function that takes a {string} token and returns true if it
+      // should be treated as a builtin.
+      isReservedIdentifier = parserConfig.isReservedIdentifier || false;
+
+  var curPunc, isDefKeyword;
+
+  function tokenBase(stream, state) {
+    var ch = stream.next();
+    if (hooks[ch]) {
+      var result = hooks[ch](stream, state);
+      if (result !== false) return result;
+    }
+    if (ch == '"' || ch == "'") {
+      state.tokenize = tokenString(ch);
+      return state.tokenize(stream, state);
+    }
+    if (numberStart.test(ch)) {
+      stream.backUp(1)
+      if (stream.match(number)) return "number"
+      stream.next()
+    }
+    if (isPunctuationChar.test(ch)) {
+      curPunc = ch;
+      return null;
+    }
+    if (ch == "/") {
+      if (stream.eat("*")) {
+        state.tokenize = tokenComment;
+        return tokenComment(stream, state);
+      }
+      if (stream.eat("/")) {
+        stream.skipToEnd();
+        return "comment";
+      }
+    }
+    if (isOperatorChar.test(ch)) {
+      while (!stream.match(/^\/[\/*]/, false) && stream.eat(isOperatorChar)) {}
+      return "operator";
+    }
+    stream.eatWhile(isIdentifierChar);
+    if (namespaceSeparator) while (stream.match(namespaceSeparator))
+      stream.eatWhile(isIdentifierChar);
+
+    var cur = stream.current();
+    if (contains(keywords, cur)) {
+      if (contains(blockKeywords, cur)) curPunc = "newstatement";
+      if (contains(defKeywords, cur)) isDefKeyword = true;
+      return "keyword";
+    }
+    if (contains(types, cur)) return "type";
+    if (contains(builtin, cur)
+        || (isReservedIdentifier && isReservedIdentifier(cur))) {
+      if (contains(blockKeywords, cur)) curPunc = "newstatement";
+      return "builtin";
+    }
+    if (contains(atoms, cur)) return "atom";
+    return "variable";
+  }
+
+  function tokenString(quote) {
+    return function(stream, state) {
+      var escaped = false, next, end = false;
+      while ((next = stream.next()) != null) {
+        if (next == quote && !escaped) {end = true; break;}
+        escaped = !escaped && next == "\\";
+      }
+      if (end || !(escaped || multiLineStrings))
+        state.tokenize = null;
+      return "string";
+    };
+  }
+
+  function tokenComment(stream, state) {
+    var maybeEnd = false, ch;
+    while (ch = stream.next()) {
+      if (ch == "/" && maybeEnd) {
+        state.tokenize = null;
+        break;
+      }
+      maybeEnd = (ch == "*");
+    }
+    return "comment";
+  }
+
+  function maybeEOL(stream, state) {
+    if (parserConfig.typeFirstDefinitions && stream.eol() && isTopScope(state.context))
+      state.typeAtEndOfLine = typeBefore(stream, state, stream.pos)
+  }
+
+  // Interface
+
+  return {
+    startState: function(basecolumn) {
+      return {
+        tokenize: null,
+        context: new Context((basecolumn || 0) - indentUnit, 0, "top", null, false),
+        indented: 0,
+        startOfLine: true,
+        prevToken: null
+      };
+    },
+
+    token: function(stream, state) {
+      var ctx = state.context;
+      if (stream.sol()) {
+        if (ctx.align == null) ctx.align = false;
+        state.indented = stream.indentation();
+        state.startOfLine = true;
+      }
+      if (stream.eatSpace()) { maybeEOL(stream, state); return null; }
+      curPunc = isDefKeyword = null;
+      var style = (state.tokenize || tokenBase)(stream, state);
+      if (style == "comment" || style == "meta") return style;
+      if (ctx.align == null) ctx.align = true;
+
+      if (curPunc == ";" || curPunc == ":" || (curPunc == "," && stream.match(/^\s*(?:\/\/.*)?$/, false)))
+        while (state.context.type == "statement") popContext(state);
+      else if (curPunc == "{") pushContext(state, stream.column(), "}");
+      else if (curPunc == "[") pushContext(state, stream.column(), "]");
+      else if (curPunc == "(") pushContext(state, stream.column(), ")");
+      else if (curPunc == "}") {
+        while (ctx.type == "statement") ctx = popContext(state);
+        if (ctx.type == "}") ctx = popContext(state);
+        while (ctx.type == "statement") ctx = popContext(state);
+      }
+      else if (curPunc == ctx.type) popContext(state);
+      else if (indentStatements &&
+               (((ctx.type == "}" || ctx.type == "top") && curPunc != ";") ||
+                (ctx.type == "statement" && curPunc == "newstatement"))) {
+        pushContext(state, stream.column(), "statement", stream.current());
+      }
+
+      if (style == "variable" &&
+          ((state.prevToken == "def" ||
+            (parserConfig.typeFirstDefinitions && typeBefore(stream, state, stream.start) &&
+             isTopScope(state.context) && stream.match(/^\s*\(/, false)))))
+        style = "def";
+
+      if (hooks.token) {
+        var result = hooks.token(stream, state, style);
+        if (result !== undefined) style = result;
+      }
+
+      if (style == "def" && parserConfig.styleDefs === false) style = "variable";
+
+      state.startOfLine = false;
+      state.prevToken = isDefKeyword ? "def" : style || curPunc;
+      maybeEOL(stream, state);
+      return style;
+    },
+
+    indent: function(state, textAfter) {
+      if (state.tokenize != tokenBase && state.tokenize != null || state.typeAtEndOfLine) return CodeMirror.Pass;
+      var ctx = state.context, firstChar = textAfter && textAfter.charAt(0);
+      var closing = firstChar == ctx.type;
+      if (ctx.type == "statement" && firstChar == "}") ctx = ctx.prev;
+      if (parserConfig.dontIndentStatements)
+        while (ctx.type == "statement" && parserConfig.dontIndentStatements.test(ctx.info))
+          ctx = ctx.prev
+      if (hooks.indent) {
+        var hook = hooks.indent(state, ctx, textAfter, indentUnit);
+        if (typeof hook == "number") return hook
+      }
+      var switchBlock = ctx.prev && ctx.prev.info == "switch";
+      if (parserConfig.allmanIndentation && /[{(]/.test(firstChar)) {
+        while (ctx.type != "top" && ctx.type != "}") ctx = ctx.prev
+        return ctx.indented
+      }
+      if (ctx.type == "statement")
+        return ctx.indented + (firstChar == "{" ? 0 : statementIndentUnit);
+      if (ctx.align && (!dontAlignCalls || ctx.type != ")"))
+        return ctx.column + (closing ? 0 : 1);
+      if (ctx.type == ")" && !closing)
+        return ctx.indented + statementIndentUnit;
+
+      return ctx.indented + (closing ? 0 : indentUnit) +
+        (!closing && switchBlock && !/^(?:case|default)\b/.test(textAfter) ? indentUnit : 0);
+    },
+
+    electricInput: indentSwitch ? /^\s*(?:case .*?:|default:|\{\}?|\})$/ : /^\s*[{}]$/,
+    blockCommentStart: "/*",
+    blockCommentEnd: "*/",
+    blockCommentContinue: " * ",
+    lineComment: "//",
+    fold: "brace"
+  };
+});
+
+  function words(str) {
+    var obj = {}, words = str.split(" ");
+    for (var i = 0; i < words.length; ++i) obj[words[i]] = true;
+    return obj;
+  }
+  function contains(words, word) {
+    if (typeof words === "function") {
+      return words(word);
+    } else {
+      return words.propertyIsEnumerable(word);
+    }
+  }
+  var cKeywords = "auto if break case register continue return default do sizeof " +
+    "static else struct switch extern typedef union for goto while enum const " +
+    "volatile inline restrict asm fortran";
+
+  // Keywords from https://en.cppreference.com/w/cpp/keyword includes C++20.
+  var cppKeywords = "alignas alignof and and_eq audit axiom bitand bitor catch " +
+  "class compl concept constexpr const_cast decltype delete dynamic_cast " +
+  "explicit export final friend import module mutable namespace new noexcept " +
+  "not not_eq operator or or_eq override private protected public " +
+  "reinterpret_cast requires static_assert static_cast template this " +
+  "thread_local throw try typeid typename using virtual xor xor_eq";
+
+  var objCKeywords = "bycopy byref in inout oneway out self super atomic nonatomic retain copy " +
+  "readwrite readonly strong weak assign typeof nullable nonnull null_resettable _cmd " +
+  "@interface @implementation @end @protocol @encode @property @synthesize @dynamic @class " +
+  "@public @package @private @protected @required @optional @try @catch @finally @import " +
+  "@selector @encode @defs @synchronized @autoreleasepool @compatibility_alias @available";
+
+  var objCBuiltins = "FOUNDATION_EXPORT FOUNDATION_EXTERN NS_INLINE NS_FORMAT_FUNCTION " +
+  " NS_RETURNS_RETAINEDNS_ERROR_ENUM NS_RETURNS_NOT_RETAINED NS_RETURNS_INNER_POINTER " +
+  "NS_DESIGNATED_INITIALIZER NS_ENUM NS_OPTIONS NS_REQUIRES_NIL_TERMINATION " +
+  "NS_ASSUME_NONNULL_BEGIN NS_ASSUME_NONNULL_END NS_SWIFT_NAME NS_REFINED_FOR_SWIFT"
+
+  // Do not use this. Use the cTypes function below. This is global just to avoid
+  // excessive calls when cTypes is being called multiple times during a parse.
+  var basicCTypes = words("int long char short double float unsigned signed " +
+    "void bool");
+
+  // Do not use this. Use the objCTypes function below. This is global just to avoid
+  // excessive calls when objCTypes is being called multiple times during a parse.
+  var basicObjCTypes = words("SEL instancetype id Class Protocol BOOL");
+
+  // Returns true if identifier is a "C" type.
+  // C type is defined as those that are reserved by the compiler (basicTypes),
+  // and those that end in _t (Reserved by POSIX for types)
+  // http://www.gnu.org/software/libc/manual/html_node/Reserved-Names.html
+  function cTypes(identifier) {
+    return contains(basicCTypes, identifier) || /.+_t$/.test(identifier);
+  }
+
+  // Returns true if identifier is a "Objective C" type.
+  function objCTypes(identifier) {
+    return cTypes(identifier) || contains(basicObjCTypes, identifier);
+  }
+
+  var cBlockKeywords = "case do else for if switch while struct enum union";
+  var cDefKeywords = "struct enum union";
+
+  function cppHook(stream, state) {
+    if (!state.startOfLine) return false
+    for (var ch, next = null; ch = stream.peek();) {
+      if (ch == "\\" && stream.match(/^.$/)) {
+        next = cppHook
+        break
+      } else if (ch == "/" && stream.match(/^\/[\/\*]/, false)) {
+        break
+      }
+      stream.next()
+    }
+    state.tokenize = next
+    return "meta"
+  }
+
+  function pointerHook(_stream, state) {
+    if (state.prevToken == "type") return "type";
+    return false;
+  }
+
+  // For C and C++ (and ObjC): identifiers starting with __
+  // or _ followed by a capital letter are reserved for the compiler.
+  function cIsReservedIdentifier(token) {
+    if (!token || token.length < 2) return false;
+    if (token[0] != '_') return false;
+    return (token[1] == '_') || (token[1] !== token[1].toLowerCase());
+  }
+
+  function cpp14Literal(stream) {
+    stream.eatWhile(/[\w\.']/);
+    return "number";
+  }
+
+  function cpp11StringHook(stream, state) {
+    stream.backUp(1);
+    // Raw strings.
+    if (stream.match(/^(?:R|u8R|uR|UR|LR)/)) {
+      var match = stream.match(/^"([^\s\\()]{0,16})\(/);
+      if (!match) {
+        return false;
+      }
+      state.cpp11RawStringDelim = match[1];
+      state.tokenize = tokenRawString;
+      return tokenRawString(stream, state);
+    }
+    // Unicode strings/chars.
+    if (stream.match(/^(?:u8|u|U|L)/)) {
+      if (stream.match(/^["']/, /* eat */ false)) {
+        return "string";
+      }
+      return false;
+    }
+    // Ignore this hook.
+    stream.next();
+    return false;
+  }
+
+  function cppLooksLikeConstructor(word) {
+    var lastTwo = /(\w+)::~?(\w+)$/.exec(word);
+    return lastTwo && lastTwo[1] == lastTwo[2];
+  }
+
+  // C#-style strings where "" escapes a quote.
+  function tokenAtString(stream, state) {
+    var next;
+    while ((next = stream.next()) != null) {
+      if (next == '"' && !stream.eat('"')) {
+        state.tokenize = null;
+        break;
+      }
+    }
+    return "string";
+  }
+
+  // C++11 raw string literal is <prefix>"<delim>( anything )<delim>", where
+  // <delim> can be a string up to 16 characters long.
+  function tokenRawString(stream, state) {
+    // Escape characters that have special regex meanings.
+    var delim = state.cpp11RawStringDelim.replace(/[^\w\s]/g, '\\$&');
+    var match = stream.match(new RegExp(".*?\\)" + delim + '"'));
+    if (match)
+      state.tokenize = null;
+    else
+      stream.skipToEnd();
+    return "string";
+  }
+
+  function def(mimes, mode) {
+    if (typeof mimes == "string") mimes = [mimes];
+    var words = [];
+    function add(obj) {
+      if (obj) for (var prop in obj) if (obj.hasOwnProperty(prop))
+        words.push(prop);
+    }
+    add(mode.keywords);
+    add(mode.types);
+    add(mode.builtin);
+    add(mode.atoms);
+    if (words.length) {
+      mode.helperType = mimes[0];
+      CodeMirror.registerHelper("hintWords", mimes[0], words);
+    }
+
+    for (var i = 0; i < mimes.length; ++i)
+      CodeMirror.defineMIME(mimes[i], mode);
+  }
+
+  def(["text/x-csrc", "text/x-c", "text/x-chdr"], {
+    name: "clike",
+    keywords: words(cKeywords),
+    types: cTypes,
+    blockKeywords: words(cBlockKeywords),
+    defKeywords: words(cDefKeywords),
+    typeFirstDefinitions: true,
+    atoms: words("NULL true false"),
+    isReservedIdentifier: cIsReservedIdentifier,
+    hooks: {
+      "#": cppHook,
+      "*": pointerHook,
+    },
+    modeProps: {fold: ["brace", "include"]}
+  });
+
+  def(["text/x-c++src", "text/x-c++hdr"], {
+    name: "clike",
+    keywords: words(cKeywords + " " + cppKeywords),
+    types: cTypes,
+    blockKeywords: words(cBlockKeywords + " class try catch"),
+    defKeywords: words(cDefKeywords + " class namespace"),
+    typeFirstDefinitions: true,
+    atoms: words("true false NULL nullptr"),
+    dontIndentStatements: /^template$/,
+    isIdentifierChar: /[\w\$_~\xa1-\uffff]/,
+    isReservedIdentifier: cIsReservedIdentifier,
+    hooks: {
+      "#": cppHook,
+      "*": pointerHook,
+      "u": cpp11StringHook,
+      "U": cpp11StringHook,
+      "L": cpp11StringHook,
+      "R": cpp11StringHook,
+      "0": cpp14Literal,
+      "1": cpp14Literal,
+      "2": cpp14Literal,
+      "3": cpp14Literal,
+      "4": cpp14Literal,
+      "5": cpp14Literal,
+      "6": cpp14Literal,
+      "7": cpp14Literal,
+      "8": cpp14Literal,
+      "9": cpp14Literal,
+      token: function(stream, state, style) {
+        if (style == "variable" && stream.peek() == "(" &&
+            (state.prevToken == ";" || state.prevToken == null ||
+             state.prevToken == "}") &&
+            cppLooksLikeConstructor(stream.current()))
+          return "def";
+      }
+    },
+    namespaceSeparator: "::",
+    modeProps: {fold: ["brace", "include"]}
+  });
+
+  def("text/x-java", {
+    name: "clike",
+    keywords: words("abstract assert break case catch class const continue default " +
+                    "do else enum extends final finally for goto if implements import " +
+                    "instanceof interface native new package private protected public " +
+                    "return static strictfp super switch synchronized this throw throws transient " +
+                    "try volatile while @interface"),
+    types: words("byte short int long float double boolean char void Boolean Byte Character Double Float " +
+                 "Integer Long Number Object Short String StringBuffer StringBuilder Void"),
+    blockKeywords: words("catch class do else finally for if switch try while"),
+    defKeywords: words("class interface enum @interface"),
+    typeFirstDefinitions: true,
+    atoms: words("true false null"),
+    number: /^(?:0x[a-f\d_]+|0b[01_]+|(?:[\d_]+\.?\d*|\.\d+)(?:e[-+]?[\d_]+)?)(u|ll?|l|f)?/i,
+    hooks: {
+      "@": function(stream) {
+        // Don't match the @interface keyword.
+        if (stream.match('interface', false)) return false;
+
+        stream.eatWhile(/[\w\$_]/);
+        return "meta";
+      }
+    },
+    modeProps: {fold: ["brace", "import"]}
+  });
+
+  def("text/x-csharp", {
+    name: "clike",
+    keywords: words("abstract as async await base break case catch checked class const continue" +
+                    " default delegate do else enum event explicit extern finally fixed for" +
+                    " foreach goto if implicit in interface internal is lock namespace new" +
+                    " operator out override params private protected public readonly ref return sealed" +
+                    " sizeof stackalloc static struct switch this throw try typeof unchecked" +
+                    " unsafe using virtual void volatile while add alias ascending descending dynamic from get" +
+                    " global group into join let orderby partial remove select set value var yield"),
+    types: words("Action Boolean Byte Char DateTime DateTimeOffset Decimal Double Func" +
+                 " Guid Int16 Int32 Int64 Object SByte Single String Task TimeSpan UInt16 UInt32" +
+                 " UInt64 bool byte char decimal double short int long object"  +
+                 " sbyte float string ushort uint ulong"),
+    blockKeywords: words("catch class do else finally for foreach if struct switch try while"),
+    defKeywords: words("class interface namespace struct var"),
+    typeFirstDefinitions: true,
+    atoms: words("true false null"),
+    hooks: {
+      "@": function(stream, state) {
+        if (stream.eat('"')) {
+          state.tokenize = tokenAtString;
+          return tokenAtString(stream, state);
+        }
+        stream.eatWhile(/[\w\$_]/);
+        return "meta";
+      }
+    }
+  });
+
+  function tokenTripleString(stream, state) {
+    var escaped = false;
+    while (!stream.eol()) {
+      if (!escaped && stream.match('"""')) {
+        state.tokenize = null;
+        break;
+      }
+      escaped = stream.next() == "\\" && !escaped;
+    }
+    return "string";
+  }
+
+  function tokenNestedComment(depth) {
+    return function (stream, state) {
+      var ch
+      while (ch = stream.next()) {
+        if (ch == "*" && stream.eat("/")) {
+          if (depth == 1) {
+            state.tokenize = null
+            break
+          } else {
+            state.tokenize = tokenNestedComment(depth - 1)
+            return state.tokenize(stream, state)
+          }
+        } else if (ch == "/" && stream.eat("*")) {
+          state.tokenize = tokenNestedComment(depth + 1)
+          return state.tokenize(stream, state)
+        }
+      }
+      return "comment"
+    }
+  }
+
+  def("text/x-scala", {
+    name: "clike",
+    keywords: words(
+      /* scala */
+      "abstract case catch class def do else extends final finally for forSome if " +
+      "implicit import lazy match new null object override package private protected return " +
+      "sealed super this throw trait try type val var while with yield _ " +
+
+      /* package scala */
+      "assert assume require print println printf readLine readBoolean readByte readShort " +
+      "readChar readInt readLong readFloat readDouble"
+    ),
+    types: words(
+      "AnyVal App Application Array BufferedIterator BigDecimal BigInt Char Console Either " +
+      "Enumeration Equiv Error Exception Fractional Function IndexedSeq Int Integral Iterable " +
+      "Iterator List Map Numeric Nil NotNull Option Ordered Ordering PartialFunction PartialOrdering " +
+      "Product Proxy Range Responder Seq Serializable Set Specializable Stream StringBuilder " +
+      "StringContext Symbol Throwable Traversable TraversableOnce Tuple Unit Vector " +
+
+      /* package java.lang */
+      "Boolean Byte Character CharSequence Class ClassLoader Cloneable Comparable " +
+      "Compiler Double Exception Float Integer Long Math Number Object Package Pair Process " +
+      "Runtime Runnable SecurityManager Short StackTraceElement StrictMath String " +
+      "StringBuffer System Thread ThreadGroup ThreadLocal Throwable Triple Void"
+    ),
+    multiLineStrings: true,
+    blockKeywords: words("catch class enum do else finally for forSome if match switch try while"),
+    defKeywords: words("class enum def object package trait type val var"),
+    atoms: words("true false null"),
+    indentStatements: false,
+    indentSwitch: false,
+    isOperatorChar: /[+\-*&%=<>!?|\/#:@]/,
+    hooks: {
+      "@": function(stream) {
+        stream.eatWhile(/[\w\$_]/);
+        return "meta";
+      },
+      '"': function(stream, state) {
+        if (!stream.match('""')) return false;
+        state.tokenize = tokenTripleString;
+        return state.tokenize(stream, state);
+      },
+      "'": function(stream) {
+        stream.eatWhile(/[\w\$_\xa1-\uffff]/);
+        return "atom";
+      },
+      "=": function(stream, state) {
+        var cx = state.context
+        if (cx.type == "}" && cx.align && stream.eat(">")) {
+          state.context = new Context(cx.indented, cx.column, cx.type, cx.info, null, cx.prev)
+          return "operator"
+        } else {
+          return false
+        }
+      },
+
+      "/": function(stream, state) {
+        if (!stream.eat("*")) return false
+        state.tokenize = tokenNestedComment(1)
+        return state.tokenize(stream, state)
+      }
+    },
+    modeProps: {closeBrackets: {pairs: '()[]{}""', triples: '"'}}
+  });
+
+  function tokenKotlinString(tripleString){
+    return function (stream, state) {
+      var escaped = false, next, end = false;
+      while (!stream.eol()) {
+        if (!tripleString && !escaped && stream.match('"') ) {end = true; break;}
+        if (tripleString && stream.match('"""')) {end = true; break;}
+        next = stream.next();
+        if(!escaped && next == "$" && stream.match('{'))
+          stream.skipTo("}");
+        escaped = !escaped && next == "\\" && !tripleString;
+      }
+      if (end || !tripleString)
+        state.tokenize = null;
+      return "string";
+    }
+  }
+
+  def("text/x-kotlin", {
+    name: "clike",
+    keywords: words(
+      /*keywords*/
+      "package as typealias class interface this super val operator " +
+      "var fun for is in This throw return annotation " +
+      "break continue object if else while do try when !in !is as? " +
+
+      /*soft keywords*/
+      "file import where by get set abstract enum open inner override private public internal " +
+      "protected catch finally out final vararg reified dynamic companion constructor init " +
+      "sealed field property receiver param sparam lateinit data inline noinline tailrec " +
+      "external annotation crossinline const operator infix suspend actual expect setparam value"
+    ),
+    types: words(
+      /* package java.lang */
+      "Boolean Byte Character CharSequence Class ClassLoader Cloneable Comparable " +
+      "Compiler Double Exception Float Integer Long Math Number Object Package Pair Process " +
+      "Runtime Runnable SecurityManager Short StackTraceElement StrictMath String " +
+      "StringBuffer System Thread ThreadGroup ThreadLocal Throwable Triple Void Annotation Any BooleanArray " +
+      "ByteArray Char CharArray DeprecationLevel DoubleArray Enum FloatArray Function Int IntArray Lazy " +
+      "LazyThreadSafetyMode LongArray Nothing ShortArray Unit"
+    ),
+    intendSwitch: false,
+    indentStatements: false,
+    multiLineStrings: true,
+    number: /^(?:0x[a-f\d_]+|0b[01_]+|(?:[\d_]+(\.\d+)?|\.\d+)(?:e[-+]?[\d_]+)?)(u|ll?|l|f)?/i,
+    blockKeywords: words("catch class do else finally for if where try while enum"),
+    defKeywords: words("class val var object interface fun"),
+    atoms: words("true false null this"),
+    hooks: {
+      "@": function(stream) {
+        stream.eatWhile(/[\w\$_]/);
+        return "meta";
+      },
+      '*': function(_stream, state) {
+        return state.prevToken == '.' ? 'variable' : 'operator';
+      },
+      '"': function(stream, state) {
+        state.tokenize = tokenKotlinString(stream.match('""'));
+        return state.tokenize(stream, state);
+      },
+      "/": function(stream, state) {
+        if (!stream.eat("*")) return false;
+        state.tokenize = tokenNestedComment(1);
+        return state.tokenize(stream, state)
+      },
+      indent: function(state, ctx, textAfter, indentUnit) {
+        var firstChar = textAfter && textAfter.charAt(0);
+        if ((state.prevToken == "}" || state.prevToken == ")") && textAfter == "")
+          return state.indented;
+        if ((state.prevToken == "operator" && textAfter != "}" && state.context.type != "}") ||
+          state.prevToken == "variable" && firstChar == "." ||
+          (state.prevToken == "}" || state.prevToken == ")") && firstChar == ".")
+          return indentUnit * 2 + ctx.indented;
+        if (ctx.align && ctx.type == "}")
+          return ctx.indented + (state.context.type == (textAfter || "").charAt(0) ? 0 : indentUnit);
+      }
+    },
+    modeProps: {closeBrackets: {triples: '"'}}
+  });
+
+  def(["x-shader/x-vertex", "x-shader/x-fragment"], {
+    name: "clike",
+    keywords: words("sampler1D sampler2D sampler3D samplerCube " +
+                    "sampler1DShadow sampler2DShadow " +
+                    "const attribute uniform varying " +
+                    "break continue discard return " +
+                    "for while do if else struct " +
+                    "in out inout"),
+    types: words("float int bool void " +
+                 "vec2 vec3 vec4 ivec2 ivec3 ivec4 bvec2 bvec3 bvec4 " +
+                 "mat2 mat3 mat4"),
+    blockKeywords: words("for while do if else struct"),
+    builtin: words("radians degrees sin cos tan asin acos atan " +
+                    "pow exp log exp2 sqrt inversesqrt " +
+                    "abs sign floor ceil fract mod min max clamp mix step smoothstep " +
+                    "length distance dot cross normalize ftransform faceforward " +
+                    "reflect refract matrixCompMult " +
+                    "lessThan lessThanEqual greaterThan greaterThanEqual " +
+                    "equal notEqual any all not " +
+                    "texture1D texture1DProj texture1DLod texture1DProjLod " +
+                    "texture2D texture2DProj texture2DLod texture2DProjLod " +
+                    "texture3D texture3DProj texture3DLod texture3DProjLod " +
+                    "textureCube textureCubeLod " +
+                    "shadow1D shadow2D shadow1DProj shadow2DProj " +
+                    "shadow1DLod shadow2DLod shadow1DProjLod shadow2DProjLod " +
+                    "dFdx dFdy fwidth " +
+                    "noise1 noise2 noise3 noise4"),
+    atoms: words("true false " +
+                "gl_FragColor gl_SecondaryColor gl_Normal gl_Vertex " +
+                "gl_MultiTexCoord0 gl_MultiTexCoord1 gl_MultiTexCoord2 gl_MultiTexCoord3 " +
+                "gl_MultiTexCoord4 gl_MultiTexCoord5 gl_MultiTexCoord6 gl_MultiTexCoord7 " +
+                "gl_FogCoord gl_PointCoord " +
+                "gl_Position gl_PointSize gl_ClipVertex " +
+                "gl_FrontColor gl_BackColor gl_FrontSecondaryColor gl_BackSecondaryColor " +
+                "gl_TexCoord gl_FogFragCoord " +
+                "gl_FragCoord gl_FrontFacing " +
+                "gl_FragData gl_FragDepth " +
+                "gl_ModelViewMatrix gl_ProjectionMatrix gl_ModelViewProjectionMatrix " +
+                "gl_TextureMatrix gl_NormalMatrix gl_ModelViewMatrixInverse " +
+                "gl_ProjectionMatrixInverse gl_ModelViewProjectionMatrixInverse " +
+                "gl_TextureMatrixTranspose gl_ModelViewMatrixInverseTranspose " +
+                "gl_ProjectionMatrixInverseTranspose " +
+                "gl_ModelViewProjectionMatrixInverseTranspose " +
+                "gl_TextureMatrixInverseTranspose " +
+                "gl_NormalScale gl_DepthRange gl_ClipPlane " +
+                "gl_Point gl_FrontMaterial gl_BackMaterial gl_LightSource gl_LightModel " +
+                "gl_FrontLightModelProduct gl_BackLightModelProduct " +
+                "gl_TextureColor gl_EyePlaneS gl_EyePlaneT gl_EyePlaneR gl_EyePlaneQ " +
+                "gl_FogParameters " +
+                "gl_MaxLights gl_MaxClipPlanes gl_MaxTextureUnits gl_MaxTextureCoords " +
+                "gl_MaxVertexAttribs gl_MaxVertexUniformComponents gl_MaxVaryingFloats " +
+                "gl_MaxVertexTextureImageUnits gl_MaxTextureImageUnits " +
+                "gl_MaxFragmentUniformComponents gl_MaxCombineTextureImageUnits " +
+                "gl_MaxDrawBuffers"),
+    indentSwitch: false,
+    hooks: {"#": cppHook},
+    modeProps: {fold: ["brace", "include"]}
+  });
+
+  def("text/x-nesc", {
+    name: "clike",
+    keywords: words(cKeywords + " as atomic async call command component components configuration event generic " +
+                    "implementation includes interface module new norace nx_struct nx_union post provides " +
+                    "signal task uses abstract extends"),
+    types: cTypes,
+    blockKeywords: words(cBlockKeywords),
+    atoms: words("null true false"),
+    hooks: {"#": cppHook},
+    modeProps: {fold: ["brace", "include"]}
+  });
+
+  def("text/x-objectivec", {
+    name: "clike",
+    keywords: words(cKeywords + " " + objCKeywords),
+    types: objCTypes,
+    builtin: words(objCBuiltins),
+    blockKeywords: words(cBlockKeywords + " @synthesize @try @catch @finally @autoreleasepool @synchronized"),
+    defKeywords: words(cDefKeywords + " @interface @implementation @protocol @class"),
+    dontIndentStatements: /^@.*$/,
+    typeFirstDefinitions: true,
+    atoms: words("YES NO NULL Nil nil true false nullptr"),
+    isReservedIdentifier: cIsReservedIdentifier,
+    hooks: {
+      "#": cppHook,
+      "*": pointerHook,
+    },
+    modeProps: {fold: ["brace", "include"]}
+  });
+
+  def("text/x-objectivec++", {
+    name: "clike",
+    keywords: words(cKeywords + " " + objCKeywords + " " + cppKeywords),
+    types: objCTypes,
+    builtin: words(objCBuiltins),
+    blockKeywords: words(cBlockKeywords + " @synthesize @try @catch @finally @autoreleasepool @synchronized class try catch"),
+    defKeywords: words(cDefKeywords + " @interface @implementation @protocol @class class namespace"),
+    dontIndentStatements: /^@.*$|^template$/,
+    typeFirstDefinitions: true,
+    atoms: words("YES NO NULL Nil nil true false nullptr"),
+    isReservedIdentifier: cIsReservedIdentifier,
+    hooks: {
+      "#": cppHook,
+      "*": pointerHook,
+      "u": cpp11StringHook,
+      "U": cpp11StringHook,
+      "L": cpp11StringHook,
+      "R": cpp11StringHook,
+      "0": cpp14Literal,
+      "1": cpp14Literal,
+      "2": cpp14Literal,
+      "3": cpp14Literal,
+      "4": cpp14Literal,
+      "5": cpp14Literal,
+      "6": cpp14Literal,
+      "7": cpp14Literal,
+      "8": cpp14Literal,
+      "9": cpp14Literal,
+      token: function(stream, state, style) {
+        if (style == "variable" && stream.peek() == "(" &&
+            (state.prevToken == ";" || state.prevToken == null ||
+             state.prevToken == "}") &&
+            cppLooksLikeConstructor(stream.current()))
+          return "def";
+      }
+    },
+    namespaceSeparator: "::",
+    modeProps: {fold: ["brace", "include"]}
+  });
+
+  def("text/x-squirrel", {
+    name: "clike",
+    keywords: words("base break clone continue const default delete enum extends function in class" +
+                    " foreach local resume return this throw typeof yield constructor instanceof static"),
+    types: cTypes,
+    blockKeywords: words("case catch class else for foreach if switch try while"),
+    defKeywords: words("function local class"),
+    typeFirstDefinitions: true,
+    atoms: words("true false null"),
+    hooks: {"#": cppHook},
+    modeProps: {fold: ["brace", "include"]}
+  });
+
+  // Ceylon Strings need to deal with interpolation
+  var stringTokenizer = null;
+  function tokenCeylonString(type) {
+    return function(stream, state) {
+      var escaped = false, next, end = false;
+      while (!stream.eol()) {
+        if (!escaped && stream.match('"') &&
+              (type == "single" || stream.match('""'))) {
+          end = true;
+          break;
+        }
+        if (!escaped && stream.match('``')) {
+          stringTokenizer = tokenCeylonString(type);
+          end = true;
+          break;
+        }
+        next = stream.next();
+        escaped = type == "single" && !escaped && next == "\\";
+      }
+      if (end)
+          state.tokenize = null;
+      return "string";
+    }
+  }
+
+  def("text/x-ceylon", {
+    name: "clike",
+    keywords: words("abstracts alias assembly assert assign break case catch class continue dynamic else" +
+                    " exists extends finally for function given if import in interface is let module new" +
+                    " nonempty object of out outer package return satisfies super switch then this throw" +
+                    " try value void while"),
+    types: function(word) {
+        // In Ceylon all identifiers that start with an uppercase are types
+        var first = word.charAt(0);
+        return (first === first.toUpperCase() && first !== first.toLowerCase());
+    },
+    blockKeywords: words("case catch class dynamic else finally for function if interface module new object switch try while"),
+    defKeywords: words("class dynamic function interface module object package value"),
+    builtin: words("abstract actual aliased annotation by default deprecated doc final formal late license" +
+                   " native optional sealed see serializable shared suppressWarnings tagged throws variable"),
+    isPunctuationChar: /[\[\]{}\(\),;\:\.`]/,
+    isOperatorChar: /[+\-*&%=<>!?|^~:\/]/,
+    numberStart: /[\d#$]/,
+    number: /^(?:#[\da-fA-F_]+|\$[01_]+|[\d_]+[kMGTPmunpf]?|[\d_]+\.[\d_]+(?:[eE][-+]?\d+|[kMGTPmunpf]|)|)/i,
+    multiLineStrings: true,
+    typeFirstDefinitions: true,
+    atoms: words("true false null larger smaller equal empty finished"),
+    indentSwitch: false,
+    styleDefs: false,
+    hooks: {
+      "@": function(stream) {
+        stream.eatWhile(/[\w\$_]/);
+        return "meta";
+      },
+      '"': function(stream, state) {
+          state.tokenize = tokenCeylonString(stream.match('""') ? "triple" : "single");
+          return state.tokenize(stream, state);
+        },
+      '`': function(stream, state) {
+          if (!stringTokenizer || !stream.match('`')) return false;
+          state.tokenize = stringTokenizer;
+          stringTokenizer = null;
+          return state.tokenize(stream, state);
+        },
+      "'": function(stream) {
+        stream.eatWhile(/[\w\$_\xa1-\uffff]/);
+        return "atom";
+      },
+      token: function(_stream, state, style) {
+          if ((style == "variable" || style == "type") &&
+              state.prevToken == ".") {
+            return "variable-2";
+          }
+        }
+    },
+    modeProps: {
+        fold: ["brace", "import"],
+        closeBrackets: {triples: '"'}
+    }
+  });
+
+});
diff --git a/web/lib/clike/index.html b/web/lib/clike/index.html
new file mode 100644
index 0000000000000000000000000000000000000000..b1c881904f552bde42a2b74c207df593058481ee
--- /dev/null
+++ b/web/lib/clike/index.html
@@ -0,0 +1,380 @@
+<!doctype html>
+
+<title>CodeMirror: C-like mode</title>
+<meta charset="utf-8"/>
+<link rel=stylesheet href="../../doc/docs.css">
+
+<link rel="stylesheet" href="../../lib/codemirror.css">
+<script src="../../lib/codemirror.js"></script>
+<script src="../../addon/edit/matchbrackets.js"></script>
+<link rel="stylesheet" href="../../addon/hint/show-hint.css">
+<script src="../../addon/hint/show-hint.js"></script>
+<script src="clike.js"></script>
+<style>.CodeMirror {border: 2px inset #dee;}</style>
+<div id=nav>
+  <a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png" alt=""></a>
+
+  <ul>
+    <li><a href="../../index.html">Home</a>
+    <li><a href="../../doc/manual.html">Manual</a>
+    <li><a href="https://github.com/codemirror/codemirror">Code</a>
+  </ul>
+  <ul>
+    <li><a href="../index.html">Language modes</a>
+    <li><a class=active href="#">C-like</a>
+  </ul>
+</div>
+
+<article>
+<h2>C-like mode</h2>
+
+<div><textarea id="c-code">
+/* C demo code */
+
+#include <zmq.h>
+#include <pthread.h>
+#include <semaphore.h>
+#include <time.h>
+#include <stdio.h>
+#include <fcntl.h>
+#include <malloc.h>
+
+typedef struct {
+  void* arg_socket;
+  zmq_msg_t* arg_msg;
+  char* arg_string;
+  unsigned long arg_len;
+  int arg_int, arg_command;
+
+  int signal_fd;
+  int pad;
+  void* context;
+  sem_t sem;
+} acl_zmq_context;
+
+#define p(X) (context->arg_##X)
+
+void* zmq_thread(void* context_pointer) {
+  acl_zmq_context* context = (acl_zmq_context*)context_pointer;
+  char ok = 'K', err = 'X';
+  int res;
+
+  while (1) {
+    while ((res = sem_wait(&amp;context->sem)) == EINTR);
+    if (res) {write(context->signal_fd, &amp;err, 1); goto cleanup;}
+    switch(p(command)) {
+    case 0: goto cleanup;
+    case 1: p(socket) = zmq_socket(context->context, p(int)); break;
+    case 2: p(int) = zmq_close(p(socket)); break;
+    case 3: p(int) = zmq_bind(p(socket), p(string)); break;
+    case 4: p(int) = zmq_connect(p(socket), p(string)); break;
+    case 5: p(int) = zmq_getsockopt(p(socket), p(int), (void*)p(string), &amp;p(len)); break;
+    case 6: p(int) = zmq_setsockopt(p(socket), p(int), (void*)p(string), p(len)); break;
+    case 7: p(int) = zmq_send(p(socket), p(msg), p(int)); break;
+    case 8: p(int) = zmq_recv(p(socket), p(msg), p(int)); break;
+    case 9: p(int) = zmq_poll(p(socket), p(int), p(len)); break;
+    }
+    p(command) = errno;
+    write(context->signal_fd, &amp;ok, 1);
+  }
+ cleanup:
+  close(context->signal_fd);
+  free(context_pointer);
+  return 0;
+}
+
+void* zmq_thread_init(void* zmq_context, int signal_fd) {
+  acl_zmq_context* context = malloc(sizeof(acl_zmq_context));
+  pthread_t thread;
+
+  context->context = zmq_context;
+  context->signal_fd = signal_fd;
+  sem_init(&amp;context->sem, 1, 0);
+  pthread_create(&amp;thread, 0, &amp;zmq_thread, context);
+  pthread_detach(thread);
+  return context;
+}
+</textarea></div>
+
+<h2>C++ example</h2>
+
+<div><textarea id="cpp-code">
+#include <iostream>
+#include "mystuff/util.h"
+
+namespace {
+enum Enum {
+  VAL1, VAL2, VAL3
+};
+
+char32_t unicode_string = U"\U0010FFFF";
+string raw_string = R"delim(anything
+you
+want)delim";
+
+int Helper(const MyType& param) {
+  return 0;
+}
+} // namespace
+
+class ForwardDec;
+
+template <class T, class V>
+class Class : public BaseClass {
+  const MyType<T, V> member_;
+
+ public:
+  const MyType<T, V>& Method() const {
+    return member_;
+  }
+
+  void Method2(MyType<T, V>* value);
+}
+
+template <class T, class V>
+void Class::Method2(MyType<T, V>* value) {
+  std::out << 1 >> method();
+  value->Method3(member_);
+  member_ = value;
+}
+</textarea></div>
+
+<h2>Objective-C example</h2>
+
+<div><textarea id="objectivec-code">
+/*
+This is a longer comment
+That spans two lines
+*/
+
+#import "MyClass.h"
+#import <AFramework/AFramework.h>
+@import BFrameworkModule;
+
+NS_ENUM(SomeValues) {
+  aValue = 1;
+};
+
+// A Class Extension with some properties
+@interface MyClass ()<AProtocol>
+@property(atomic, readwrite, assign) NSInteger anInt;
+@property(nonatomic, strong, nullable) NSString *aString;
+@end
+
+@implementation YourAppDelegate
+
+- (instancetype)initWithString:(NSString *)aStringVar {
+  if ((self = [super init])) {
+    aString = aStringVar;
+  }
+  return self;
+}
+
+- (BOOL)doSomething:(float)progress {
+  NSString *myString = @"This is a ObjC string %f ";
+  myString = [[NSString stringWithFormat:myString, progress] stringByAppendingString:self.aString];
+  return myString.length > 100 ? NO : YES;
+}
+
+@end
+</textarea></div>
+
+<h2>Java example</h2>
+
+<div><textarea id="java-code">
+import com.demo.util.MyType;
+import com.demo.util.MyInterface;
+
+public enum Enum {
+  VAL1, VAL2, VAL3
+}
+
+public class Class<T, V> implements MyInterface {
+  public static final MyType<T, V> member;
+  
+  private class InnerClass {
+    public int zero() {
+      return 0;
+    }
+  }
+
+  @Override
+  public MyType method() {
+    return member;
+  }
+
+  public void method2(MyType<T, V> value) {
+    method();
+    value.method3();
+    member = value;
+  }
+}
+</textarea></div>
+
+<h2>Scala example</h2>
+
+<div><textarea id="scala-code">
+object FilterTest extends App {
+  def filter(xs: List[Int], threshold: Int) = {
+    def process(ys: List[Int]): List[Int] =
+      if (ys.isEmpty) ys
+      else if (ys.head < threshold) ys.head :: process(ys.tail)
+      else process(ys.tail)
+    process(xs)
+  }
+  println(filter(List(1, 9, 2, 8, 3, 7, 4), 5))
+}
+</textarea></div>
+
+<h2>Kotlin mode</h2>
+
+<div><textarea id="kotlin-code">
+package org.wasabi.http
+
+import java.util.concurrent.Executors
+import java.net.InetSocketAddress
+import org.wasabi.app.AppConfiguration
+import io.netty.bootstrap.ServerBootstrap
+import io.netty.channel.nio.NioEventLoopGroup
+import io.netty.channel.socket.nio.NioServerSocketChannel
+import org.wasabi.app.AppServer
+
+public class HttpServer(private val appServer: AppServer) {
+
+    val bootstrap: ServerBootstrap
+    val primaryGroup: NioEventLoopGroup
+    val workerGroup:  NioEventLoopGroup
+
+    init {
+        // Define worker groups
+        primaryGroup = NioEventLoopGroup()
+        workerGroup = NioEventLoopGroup()
+
+        // Initialize bootstrap of server
+        bootstrap = ServerBootstrap()
+
+        bootstrap.group(primaryGroup, workerGroup)
+        bootstrap.channel(javaClass<NioServerSocketChannel>())
+        bootstrap.childHandler(NettyPipelineInitializer(appServer))
+    }
+
+    public fun start(wait: Boolean = true) {
+        val channel = bootstrap.bind(appServer.configuration.port)?.sync()?.channel()
+
+        if (wait) {
+            channel?.closeFuture()?.sync()
+        }
+    }
+
+    public fun stop() {
+        // Shutdown all event loops
+        primaryGroup.shutdownGracefully()
+        workerGroup.shutdownGracefully()
+
+        // Wait till all threads are terminated
+        primaryGroup.terminationFuture().sync()
+        workerGroup.terminationFuture().sync()
+    }
+}
+</textarea></div>
+
+<h2>Ceylon mode</h2>
+
+<div><textarea id="ceylon-code">
+"Produces the [[stream|Iterable]] that results from repeated
+ application of the given [[function|next]] to the given
+ [[first]] element of the stream, until the function first
+ returns [[finished]]. If the given function never returns 
+ `finished`, the resulting stream is infinite.
+
+ For example:
+
+     loop(0)(2.plus).takeWhile(10.largerThan)
+
+ produces the stream `{ 0, 2, 4, 6, 8 }`."
+tagged("Streams")
+shared {Element+} loop&lt;Element&gt;(
+        "The first element of the resulting stream."
+        Element first)(
+        "The function that produces the next element of the
+         stream, given the current element. The function may
+         return [[finished]] to indicate the end of the 
+         stream."
+        Element|Finished next(Element element))
+    =&gt; let (start = first)
+    object satisfies {Element+} {
+        first =&gt; start;
+        empty =&gt; false;
+        function nextElement(Element element)
+                =&gt; next(element);
+        iterator()
+                =&gt; object satisfies Iterator&lt;Element&gt; {
+            variable Element|Finished current = start;
+            shared actual Element|Finished next() {
+                if (!is Finished result = current) {
+                    current = nextElement(result);
+                    return result;
+                }
+                else {
+                    return finished;
+                }
+            }
+        };
+    };
+</textarea></div>
+
+    <script>
+      var cEditor = CodeMirror.fromTextArea(document.getElementById("c-code"), {
+        lineNumbers: true,
+        matchBrackets: true,
+        mode: "text/x-csrc"
+      });
+      var cppEditor = CodeMirror.fromTextArea(document.getElementById("cpp-code"), {
+        lineNumbers: true,
+        matchBrackets: true,
+        mode: "text/x-c++src"
+      });
+      var javaEditor = CodeMirror.fromTextArea(document.getElementById("java-code"), {
+        lineNumbers: true,
+        matchBrackets: true,
+        mode: "text/x-java"
+      });
+      var objectivecEditor = CodeMirror.fromTextArea(document.getElementById("objectivec-code"), {
+        lineNumbers: true,
+        matchBrackets: true,
+        mode: "text/x-objectivec"
+      });
+      var scalaEditor = CodeMirror.fromTextArea(document.getElementById("scala-code"), {
+        lineNumbers: true,
+        matchBrackets: true,
+        mode: "text/x-scala"
+      });
+      var kotlinEditor = CodeMirror.fromTextArea(document.getElementById("kotlin-code"), {
+          lineNumbers: true,
+          matchBrackets: true,
+          mode: "text/x-kotlin"
+      });
+      var ceylonEditor = CodeMirror.fromTextArea(document.getElementById("ceylon-code"), {
+          lineNumbers: true,
+          matchBrackets: true,
+          mode: "text/x-ceylon"
+      });
+      var mac = CodeMirror.keyMap.default == CodeMirror.keyMap.macDefault;
+      CodeMirror.keyMap.default[(mac ? "Cmd" : "Ctrl") + "-Space"] = "autocomplete";
+    </script>
+
+    <p>Simple mode that tries to handle C-like languages as well as it
+    can. Takes two configuration parameters: <code>keywords</code>, an
+    object whose property names are the keywords in the language,
+    and <code>useCPP</code>, which determines whether C preprocessor
+    directives are recognized.</p>
+
+    <p><strong>MIME types defined:</strong> <code>text/x-csrc</code>
+    (C), <code>text/x-c++src</code> (C++), <code>text/x-java</code>
+    (Java), <code>text/x-csharp</code> (C#),
+    <code>text/x-objectivec</code> (Objective-C),
+    <code>text/x-scala</code> (Scala), <code>text/x-vertex</code>
+    <code>x-shader/x-fragment</code> (shader programs),
+    <code>text/x-squirrel</code> (Squirrel) and
+    <code>text/x-ceylon</code> (Ceylon)</p>
+</article>
diff --git a/web/lib/clike/scala.html b/web/lib/clike/scala.html
new file mode 100644
index 0000000000000000000000000000000000000000..3d2123c01051769b696362e84faa1ce1b44289e7
--- /dev/null
+++ b/web/lib/clike/scala.html
@@ -0,0 +1,767 @@
+<!doctype html>
+
+<title>CodeMirror: Scala mode</title>
+<meta charset="utf-8"/>
+<link rel=stylesheet href="../../doc/docs.css">
+
+<link rel="stylesheet" href="../../lib/codemirror.css">
+<link rel="stylesheet" href="../../theme/ambiance.css">
+<script src="../../lib/codemirror.js"></script>
+<script src="../../addon/edit/matchbrackets.js"></script>
+<script src="clike.js"></script>
+<div id=nav>
+  <a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png" alt=""></a>
+
+  <ul>
+    <li><a href="../../index.html">Home</a>
+    <li><a href="../../doc/manual.html">Manual</a>
+    <li><a href="https://github.com/codemirror/codemirror">Code</a>
+  </ul>
+  <ul>
+    <li><a href="../index.html">Language modes</a>
+    <li><a class=active href="#">Scala</a>
+  </ul>
+</div>
+
+<article>
+<h2>Scala mode</h2>
+<form>
+<textarea id="code" name="code">
+
+  /*                     __                                               *\
+  **     ________ ___   / /  ___     Scala API                            **
+  **    / __/ __// _ | / /  / _ |    (c) 2003-2011, LAMP/EPFL             **
+  **  __\ \/ /__/ __ |/ /__/ __ |    http://scala-lang.org/               **
+  ** /____/\___/_/ |_/____/_/ | |                                         **
+  **                          |/                                          **
+  \*                                                                      */
+
+  package scala.collection
+
+  import generic._
+  import mutable.{ Builder, ListBuffer }
+  import annotation.{tailrec, migration, bridge}
+  import annotation.unchecked.{ uncheckedVariance => uV }
+  import parallel.ParIterable
+
+  /** A template trait for traversable collections of type `Traversable[A]`.
+   *  
+   *  $traversableInfo
+   *  @define mutability
+   *  @define traversableInfo
+   *  This is a base trait of all kinds of $mutability Scala collections. It
+   *  implements the behavior common to all collections, in terms of a method
+   *  `foreach` with signature:
+   * {{{
+   *     def foreach[U](f: Elem => U): Unit
+   * }}}
+   *  Collection classes mixing in this trait provide a concrete 
+   *  `foreach` method which traverses all the
+   *  elements contained in the collection, applying a given function to each.
+   *  They also need to provide a method `newBuilder`
+   *  which creates a builder for collections of the same kind.
+   *  
+   *  A traversable class might or might not have two properties: strictness
+   *  and orderedness. Neither is represented as a type.
+   *  
+   *  The instances of a strict collection class have all their elements
+   *  computed before they can be used as values. By contrast, instances of
+   *  a non-strict collection class may defer computation of some of their
+   *  elements until after the instance is available as a value.
+   *  A typical example of a non-strict collection class is a
+   *  <a href="../immutable/Stream.html" target="ContentFrame">
+   *  `scala.collection.immutable.Stream`</a>.
+   *  A more general class of examples are `TraversableViews`.
+   *  
+   *  If a collection is an instance of an ordered collection class, traversing
+   *  its elements with `foreach` will always visit elements in the
+   *  same order, even for different runs of the program. If the class is not
+   *  ordered, `foreach` can visit elements in different orders for
+   *  different runs (but it will keep the same order in the same run).'
+   * 
+   *  A typical example of a collection class which is not ordered is a
+   *  `HashMap` of objects. The traversal order for hash maps will
+   *  depend on the hash codes of its elements, and these hash codes might
+   *  differ from one run to the next. By contrast, a `LinkedHashMap`
+   *  is ordered because it's `foreach` method visits elements in the
+   *  order they were inserted into the `HashMap`.
+   *
+   *  @author Martin Odersky
+   *  @version 2.8
+   *  @since   2.8
+   *  @tparam A    the element type of the collection
+   *  @tparam Repr the type of the actual collection containing the elements.
+   *
+   *  @define Coll Traversable
+   *  @define coll traversable collection
+   */
+  trait TraversableLike[+A, +Repr] extends HasNewBuilder[A, Repr] 
+                                      with FilterMonadic[A, Repr]
+                                      with TraversableOnce[A]
+                                      with GenTraversableLike[A, Repr]
+                                      with Parallelizable[A, ParIterable[A]]
+  {
+    self =>
+
+    import Traversable.breaks._
+
+    /** The type implementing this traversable */
+    protected type Self = Repr
+
+    /** The collection of type $coll underlying this `TraversableLike` object.
+     *  By default this is implemented as the `TraversableLike` object itself,
+     *  but this can be overridden.
+     */
+    def repr: Repr = this.asInstanceOf[Repr]
+
+    /** The underlying collection seen as an instance of `$Coll`.
+     *  By default this is implemented as the current collection object itself,
+     *  but this can be overridden.
+     */
+    protected[this] def thisCollection: Traversable[A] = this.asInstanceOf[Traversable[A]]
+
+    /** A conversion from collections of type `Repr` to `$Coll` objects.
+     *  By default this is implemented as just a cast, but this can be overridden.
+     */
+    protected[this] def toCollection(repr: Repr): Traversable[A] = repr.asInstanceOf[Traversable[A]]
+
+    /** Creates a new builder for this collection type.
+     */
+    protected[this] def newBuilder: Builder[A, Repr]
+
+    protected[this] def parCombiner = ParIterable.newCombiner[A]
+
+    /** Applies a function `f` to all elements of this $coll.
+     *  
+     *    Note: this method underlies the implementation of most other bulk operations.
+     *    It's important to implement this method in an efficient way.
+     *  
+     *
+     *  @param  f   the function that is applied for its side-effect to every element.
+     *              The result of function `f` is discarded.
+     *              
+     *  @tparam  U  the type parameter describing the result of function `f`. 
+     *              This result will always be ignored. Typically `U` is `Unit`,
+     *              but this is not necessary.
+     *
+     *  @usecase def foreach(f: A => Unit): Unit
+     */
+    def foreach[U](f: A => U): Unit
+
+    /** Tests whether this $coll is empty.
+     *
+     *  @return    `true` if the $coll contain no elements, `false` otherwise.
+     */
+    def isEmpty: Boolean = {
+      var result = true
+      breakable {
+        for (x <- this) {
+          result = false
+          break
+        }
+      }
+      result
+    }
+
+    /** Tests whether this $coll is known to have a finite size.
+     *  All strict collections are known to have finite size. For a non-strict collection
+     *  such as `Stream`, the predicate returns `true` if all elements have been computed.
+     *  It returns `false` if the stream is not yet evaluated to the end.
+     *
+     *  Note: many collection methods will not work on collections of infinite sizes. 
+     *
+     *  @return  `true` if this collection is known to have finite size, `false` otherwise.
+     */
+    def hasDefiniteSize = true
+
+    def ++[B >: A, That](that: GenTraversableOnce[B])(implicit bf: CanBuildFrom[Repr, B, That]): That = {
+      val b = bf(repr)
+      if (that.isInstanceOf[IndexedSeqLike[_, _]]) b.sizeHint(this, that.seq.size)
+      b ++= thisCollection
+      b ++= that.seq
+      b.result
+    }
+
+    @bridge
+    def ++[B >: A, That](that: TraversableOnce[B])(implicit bf: CanBuildFrom[Repr, B, That]): That =
+      ++(that: GenTraversableOnce[B])(bf)
+
+    /** Concatenates this $coll with the elements of a traversable collection.
+     *  It differs from ++ in that the right operand determines the type of the
+     *  resulting collection rather than the left one.
+     * 
+     *  @param that   the traversable to append.
+     *  @tparam B     the element type of the returned collection. 
+     *  @tparam That  $thatinfo
+     *  @param bf     $bfinfo
+     *  @return       a new collection of type `That` which contains all elements
+     *                of this $coll followed by all elements of `that`.
+     * 
+     *  @usecase def ++:[B](that: TraversableOnce[B]): $Coll[B]
+     *  
+     *  @return       a new $coll which contains all elements of this $coll
+     *                followed by all elements of `that`.
+     */
+    def ++:[B >: A, That](that: TraversableOnce[B])(implicit bf: CanBuildFrom[Repr, B, That]): That = {
+      val b = bf(repr)
+      if (that.isInstanceOf[IndexedSeqLike[_, _]]) b.sizeHint(this, that.size)
+      b ++= that
+      b ++= thisCollection
+      b.result
+    }
+
+    /** This overload exists because: for the implementation of ++: we should reuse
+     *  that of ++ because many collections override it with more efficient versions.
+     *  Since TraversableOnce has no '++' method, we have to implement that directly,
+     *  but Traversable and down can use the overload.
+     */
+    def ++:[B >: A, That](that: Traversable[B])(implicit bf: CanBuildFrom[Repr, B, That]): That =
+      (that ++ seq)(breakOut)
+
+    def map[B, That](f: A => B)(implicit bf: CanBuildFrom[Repr, B, That]): That = {
+      val b = bf(repr)
+      b.sizeHint(this) 
+      for (x <- this) b += f(x)
+      b.result
+    }
+
+    def flatMap[B, That](f: A => GenTraversableOnce[B])(implicit bf: CanBuildFrom[Repr, B, That]): That = {
+      val b = bf(repr)
+      for (x <- this) b ++= f(x).seq
+      b.result
+    }
+
+    /** Selects all elements of this $coll which satisfy a predicate.
+     *
+     *  @param p     the predicate used to test elements.
+     *  @return      a new $coll consisting of all elements of this $coll that satisfy the given
+     *               predicate `p`. The order of the elements is preserved.
+     */
+    def filter(p: A => Boolean): Repr = {
+      val b = newBuilder
+      for (x <- this) 
+        if (p(x)) b += x
+      b.result
+    }
+
+    /** Selects all elements of this $coll which do not satisfy a predicate.
+     *
+     *  @param p     the predicate used to test elements.
+     *  @return      a new $coll consisting of all elements of this $coll that do not satisfy the given
+     *               predicate `p`. The order of the elements is preserved.
+     */
+    def filterNot(p: A => Boolean): Repr = filter(!p(_))
+
+    def collect[B, That](pf: PartialFunction[A, B])(implicit bf: CanBuildFrom[Repr, B, That]): That = {
+      val b = bf(repr)
+      for (x <- this) if (pf.isDefinedAt(x)) b += pf(x)
+      b.result
+    }
+
+    /** Builds a new collection by applying an option-valued function to all
+     *  elements of this $coll on which the function is defined.
+     *
+     *  @param f      the option-valued function which filters and maps the $coll.
+     *  @tparam B     the element type of the returned collection.
+     *  @tparam That  $thatinfo
+     *  @param bf     $bfinfo
+     *  @return       a new collection of type `That` resulting from applying the option-valued function
+     *                `f` to each element and collecting all defined results.
+     *                The order of the elements is preserved.
+     *
+     *  @usecase def filterMap[B](f: A => Option[B]): $Coll[B]
+     *  
+     *  @param pf     the partial function which filters and maps the $coll.
+     *  @return       a new $coll resulting from applying the given option-valued function
+     *                `f` to each element and collecting all defined results.
+     *                The order of the elements is preserved.
+    def filterMap[B, That](f: A => Option[B])(implicit bf: CanBuildFrom[Repr, B, That]): That = {
+      val b = bf(repr)
+      for (x <- this) 
+        f(x) match {
+          case Some(y) => b += y
+          case _ =>
+        }
+      b.result
+    }
+     */
+
+    /** Partitions this $coll in two ${coll}s according to a predicate.
+     *
+     *  @param p the predicate on which to partition.
+     *  @return  a pair of ${coll}s: the first $coll consists of all elements that 
+     *           satisfy the predicate `p` and the second $coll consists of all elements
+     *           that don't. The relative order of the elements in the resulting ${coll}s
+     *           is the same as in the original $coll.
+     */
+    def partition(p: A => Boolean): (Repr, Repr) = {
+      val l, r = newBuilder
+      for (x <- this) (if (p(x)) l else r) += x
+      (l.result, r.result)
+    }
+
+    def groupBy[K](f: A => K): immutable.Map[K, Repr] = {
+      val m = mutable.Map.empty[K, Builder[A, Repr]]
+      for (elem <- this) {
+        val key = f(elem)
+        val bldr = m.getOrElseUpdate(key, newBuilder)
+        bldr += elem
+      }
+      val b = immutable.Map.newBuilder[K, Repr]
+      for ((k, v) <- m)
+        b += ((k, v.result))
+
+      b.result
+    }
+
+    /** Tests whether a predicate holds for all elements of this $coll.
+     *
+     *  $mayNotTerminateInf
+     *
+     *  @param   p     the predicate used to test elements.
+     *  @return        `true` if the given predicate `p` holds for all elements
+     *                 of this $coll, otherwise `false`.
+     */
+    def forall(p: A => Boolean): Boolean = {
+      var result = true
+      breakable {
+        for (x <- this)
+          if (!p(x)) { result = false; break }
+      }
+      result
+    }
+
+    /** Tests whether a predicate holds for some of the elements of this $coll.
+     *
+     *  $mayNotTerminateInf
+     *
+     *  @param   p     the predicate used to test elements.
+     *  @return        `true` if the given predicate `p` holds for some of the
+     *                 elements of this $coll, otherwise `false`.
+     */
+    def exists(p: A => Boolean): Boolean = {
+      var result = false
+      breakable {
+        for (x <- this)
+          if (p(x)) { result = true; break }
+      }
+      result
+    }
+
+    /** Finds the first element of the $coll satisfying a predicate, if any.
+     * 
+     *  $mayNotTerminateInf
+     *  $orderDependent
+     *
+     *  @param p    the predicate used to test elements.
+     *  @return     an option value containing the first element in the $coll
+     *              that satisfies `p`, or `None` if none exists.
+     */
+    def find(p: A => Boolean): Option[A] = {
+      var result: Option[A] = None
+      breakable {
+        for (x <- this)
+          if (p(x)) { result = Some(x); break }
+      }
+      result
+    }
+
+    def scan[B >: A, That](z: B)(op: (B, B) => B)(implicit cbf: CanBuildFrom[Repr, B, That]): That = scanLeft(z)(op)
+
+    def scanLeft[B, That](z: B)(op: (B, A) => B)(implicit bf: CanBuildFrom[Repr, B, That]): That = {
+      val b = bf(repr)
+      b.sizeHint(this, 1)
+      var acc = z
+      b += acc
+      for (x <- this) { acc = op(acc, x); b += acc }
+      b.result
+    }
+
+    @migration(2, 9,
+      "This scanRight definition has changed in 2.9.\n" +
+      "The previous behavior can be reproduced with scanRight.reverse."
+    )
+    def scanRight[B, That](z: B)(op: (A, B) => B)(implicit bf: CanBuildFrom[Repr, B, That]): That = {
+      var scanned = List(z)
+      var acc = z
+      for (x <- reversed) {
+        acc = op(x, acc)
+        scanned ::= acc
+      }
+      val b = bf(repr)
+      for (elem <- scanned) b += elem
+      b.result
+    }
+
+    /** Selects the first element of this $coll.
+     *  $orderDependent
+     *  @return  the first element of this $coll.
+     *  @throws `NoSuchElementException` if the $coll is empty.
+     */
+    def head: A = {
+      var result: () => A = () => throw new NoSuchElementException
+      breakable {
+        for (x <- this) {
+          result = () => x
+          break
+        }
+      }
+      result()
+    }
+
+    /** Optionally selects the first element.
+     *  $orderDependent
+     *  @return  the first element of this $coll if it is nonempty, `None` if it is empty.
+     */
+    def headOption: Option[A] = if (isEmpty) None else Some(head)
+
+    /** Selects all elements except the first.
+     *  $orderDependent
+     *  @return  a $coll consisting of all elements of this $coll
+     *           except the first one.
+     *  @throws `UnsupportedOperationException` if the $coll is empty.
+     */ 
+    override def tail: Repr = {
+      if (isEmpty) throw new UnsupportedOperationException("empty.tail")
+      drop(1)
+    }
+
+    /** Selects the last element.
+      * $orderDependent
+      * @return The last element of this $coll.
+      * @throws NoSuchElementException If the $coll is empty.
+      */
+    def last: A = {
+      var lst = head
+      for (x <- this)
+        lst = x
+      lst
+    }
+
+    /** Optionally selects the last element.
+     *  $orderDependent
+     *  @return  the last element of this $coll$ if it is nonempty, `None` if it is empty.
+     */
+    def lastOption: Option[A] = if (isEmpty) None else Some(last)
+
+    /** Selects all elements except the last.
+     *  $orderDependent
+     *  @return  a $coll consisting of all elements of this $coll
+     *           except the last one.
+     *  @throws `UnsupportedOperationException` if the $coll is empty.
+     */
+    def init: Repr = {
+      if (isEmpty) throw new UnsupportedOperationException("empty.init")
+      var lst = head
+      var follow = false
+      val b = newBuilder
+      b.sizeHint(this, -1)
+      for (x <- this.seq) {
+        if (follow) b += lst
+        else follow = true
+        lst = x
+      }
+      b.result
+    }
+
+    def take(n: Int): Repr = slice(0, n)
+
+    def drop(n: Int): Repr = 
+      if (n <= 0) {
+        val b = newBuilder
+        b.sizeHint(this)
+        b ++= thisCollection result
+      }
+      else sliceWithKnownDelta(n, Int.MaxValue, -n)
+
+    def slice(from: Int, until: Int): Repr = sliceWithKnownBound(math.max(from, 0), until)
+
+    // Precondition: from >= 0, until > 0, builder already configured for building.
+    private[this] def sliceInternal(from: Int, until: Int, b: Builder[A, Repr]): Repr = {
+      var i = 0
+      breakable {
+        for (x <- this.seq) {
+          if (i >= from) b += x
+          i += 1
+          if (i >= until) break
+        }
+      }
+      b.result
+    }
+    // Precondition: from >= 0
+    private[scala] def sliceWithKnownDelta(from: Int, until: Int, delta: Int): Repr = {
+      val b = newBuilder
+      if (until <= from) b.result
+      else {
+        b.sizeHint(this, delta)
+        sliceInternal(from, until, b)
+      }
+    }
+    // Precondition: from >= 0
+    private[scala] def sliceWithKnownBound(from: Int, until: Int): Repr = {
+      val b = newBuilder
+      if (until <= from) b.result
+      else {
+        b.sizeHintBounded(until - from, this)      
+        sliceInternal(from, until, b)
+      }
+    }
+
+    def takeWhile(p: A => Boolean): Repr = {
+      val b = newBuilder
+      breakable {
+        for (x <- this) {
+          if (!p(x)) break
+          b += x
+        }
+      }
+      b.result
+    }
+
+    def dropWhile(p: A => Boolean): Repr = {
+      val b = newBuilder
+      var go = false
+      for (x <- this) {
+        if (!p(x)) go = true
+        if (go) b += x
+      }
+      b.result
+    }
+
+    def span(p: A => Boolean): (Repr, Repr) = {
+      val l, r = newBuilder
+      var toLeft = true
+      for (x <- this) {
+        toLeft = toLeft && p(x)
+        (if (toLeft) l else r) += x
+      }
+      (l.result, r.result)
+    }
+
+    def splitAt(n: Int): (Repr, Repr) = {
+      val l, r = newBuilder
+      l.sizeHintBounded(n, this)
+      if (n >= 0) r.sizeHint(this, -n)
+      var i = 0
+      for (x <- this) {
+        (if (i < n) l else r) += x
+        i += 1
+      }
+      (l.result, r.result)
+    }
+
+    /** Iterates over the tails of this $coll. The first value will be this
+     *  $coll and the final one will be an empty $coll, with the intervening
+     *  values the results of successive applications of `tail`.
+     *
+     *  @return   an iterator over all the tails of this $coll
+     *  @example  `List(1,2,3).tails = Iterator(List(1,2,3), List(2,3), List(3), Nil)`
+     */  
+    def tails: Iterator[Repr] = iterateUntilEmpty(_.tail)
+
+    /** Iterates over the inits of this $coll. The first value will be this
+     *  $coll and the final one will be an empty $coll, with the intervening
+     *  values the results of successive applications of `init`.
+     *
+     *  @return  an iterator over all the inits of this $coll
+     *  @example  `List(1,2,3).inits = Iterator(List(1,2,3), List(1,2), List(1), Nil)`
+     */
+    def inits: Iterator[Repr] = iterateUntilEmpty(_.init)
+
+    /** Copies elements of this $coll to an array.
+     *  Fills the given array `xs` with at most `len` elements of
+     *  this $coll, starting at position `start`.
+     *  Copying will stop once either the end of the current $coll is reached,
+     *  or the end of the array is reached, or `len` elements have been copied.
+     *
+     *  $willNotTerminateInf
+     * 
+     *  @param  xs     the array to fill.
+     *  @param  start  the starting index.
+     *  @param  len    the maximal number of elements to copy.
+     *  @tparam B      the type of the elements of the array. 
+     * 
+     *
+     *  @usecase def copyToArray(xs: Array[A], start: Int, len: Int): Unit
+     */
+    def copyToArray[B >: A](xs: Array[B], start: Int, len: Int) {
+      var i = start
+      val end = (start + len) min xs.length
+      breakable {
+        for (x <- this) {
+          if (i >= end) break
+          xs(i) = x
+          i += 1
+        }
+      }
+    }
+
+    def toTraversable: Traversable[A] = thisCollection
+    def toIterator: Iterator[A] = toStream.iterator
+    def toStream: Stream[A] = toBuffer.toStream
+
+    /** Converts this $coll to a string.
+     *
+     *  @return   a string representation of this collection. By default this
+     *            string consists of the `stringPrefix` of this $coll,
+     *            followed by all elements separated by commas and enclosed in parentheses.
+     */
+    override def toString = mkString(stringPrefix + "(", ", ", ")")
+
+    /** Defines the prefix of this object's `toString` representation.
+     *
+     *  @return  a string representation which starts the result of `toString`
+     *           applied to this $coll. By default the string prefix is the
+     *           simple name of the collection class $coll.
+     */
+    def stringPrefix : String = {
+      var string = repr.asInstanceOf[AnyRef].getClass.getName
+      val idx1 = string.lastIndexOf('.' : Int)
+      if (idx1 != -1) string = string.substring(idx1 + 1)
+      val idx2 = string.indexOf('$')
+      if (idx2 != -1) string = string.substring(0, idx2)
+      string
+    }
+
+    /** Creates a non-strict view of this $coll.
+     * 
+     *  @return a non-strict view of this $coll.
+     */
+    def view = new TraversableView[A, Repr] {
+      protected lazy val underlying = self.repr
+      override def foreach[U](f: A => U) = self foreach f
+    }
+
+    /** Creates a non-strict view of a slice of this $coll.
+     *
+     *  Note: the difference between `view` and `slice` is that `view` produces
+     *        a view of the current $coll, whereas `slice` produces a new $coll.
+     * 
+     *  Note: `view(from, to)` is equivalent to `view.slice(from, to)`
+     *  $orderDependent
+     * 
+     *  @param from   the index of the first element of the view
+     *  @param until  the index of the element following the view
+     *  @return a non-strict view of a slice of this $coll, starting at index `from`
+     *  and extending up to (but not including) index `until`.
+     */
+    def view(from: Int, until: Int): TraversableView[A, Repr] = view.slice(from, until)
+
+    /** Creates a non-strict filter of this $coll.
+     *
+     *  Note: the difference between `c filter p` and `c withFilter p` is that
+     *        the former creates a new collection, whereas the latter only
+     *        restricts the domain of subsequent `map`, `flatMap`, `foreach`,
+     *        and `withFilter` operations.
+     *  $orderDependent
+     * 
+     *  @param p   the predicate used to test elements.
+     *  @return    an object of class `WithFilter`, which supports
+     *             `map`, `flatMap`, `foreach`, and `withFilter` operations.
+     *             All these operations apply to those elements of this $coll which
+     *             satisfy the predicate `p`.
+     */
+    def withFilter(p: A => Boolean): FilterMonadic[A, Repr] = new WithFilter(p)
+
+    /** A class supporting filtered operations. Instances of this class are
+     *  returned by method `withFilter`.
+     */
+    class WithFilter(p: A => Boolean) extends FilterMonadic[A, Repr] {
+
+      /** Builds a new collection by applying a function to all elements of the
+       *  outer $coll containing this `WithFilter` instance that satisfy predicate `p`.
+       *
+       *  @param f      the function to apply to each element.
+       *  @tparam B     the element type of the returned collection.
+       *  @tparam That  $thatinfo
+       *  @param bf     $bfinfo
+       *  @return       a new collection of type `That` resulting from applying
+       *                the given function `f` to each element of the outer $coll
+       *                that satisfies predicate `p` and collecting the results.
+       *
+       *  @usecase def map[B](f: A => B): $Coll[B] 
+       *  
+       *  @return       a new $coll resulting from applying the given function
+       *                `f` to each element of the outer $coll that satisfies
+       *                predicate `p` and collecting the results.
+       */
+      def map[B, That](f: A => B)(implicit bf: CanBuildFrom[Repr, B, That]): That = {
+        val b = bf(repr)
+        for (x <- self) 
+          if (p(x)) b += f(x)
+        b.result
+      }
+
+      /** Builds a new collection by applying a function to all elements of the
+       *  outer $coll containing this `WithFilter` instance that satisfy
+       *  predicate `p` and concatenating the results. 
+       *
+       *  @param f      the function to apply to each element.
+       *  @tparam B     the element type of the returned collection.
+       *  @tparam That  $thatinfo
+       *  @param bf     $bfinfo
+       *  @return       a new collection of type `That` resulting from applying
+       *                the given collection-valued function `f` to each element
+       *                of the outer $coll that satisfies predicate `p` and
+       *                concatenating the results.
+       *
+       *  @usecase def flatMap[B](f: A => TraversableOnce[B]): $Coll[B]
+       * 
+       *  @return       a new $coll resulting from applying the given collection-valued function
+       *                `f` to each element of the outer $coll that satisfies predicate `p` and concatenating the results.
+       */
+      def flatMap[B, That](f: A => GenTraversableOnce[B])(implicit bf: CanBuildFrom[Repr, B, That]): That = {
+        val b = bf(repr)
+        for (x <- self) 
+          if (p(x)) b ++= f(x).seq
+        b.result
+      }
+
+      /** Applies a function `f` to all elements of the outer $coll containing
+       *  this `WithFilter` instance that satisfy predicate `p`.
+       *
+       *  @param  f   the function that is applied for its side-effect to every element.
+       *              The result of function `f` is discarded.
+       *              
+       *  @tparam  U  the type parameter describing the result of function `f`. 
+       *              This result will always be ignored. Typically `U` is `Unit`,
+       *              but this is not necessary.
+       *
+       *  @usecase def foreach(f: A => Unit): Unit
+       */   
+      def foreach[U](f: A => U): Unit = 
+        for (x <- self) 
+          if (p(x)) f(x)
+
+      /** Further refines the filter for this $coll.
+       *
+       *  @param q   the predicate used to test elements.
+       *  @return    an object of class `WithFilter`, which supports
+       *             `map`, `flatMap`, `foreach`, and `withFilter` operations.
+       *             All these operations apply to those elements of this $coll which
+       *             satisfy the predicate `q` in addition to the predicate `p`.
+       */
+      def withFilter(q: A => Boolean): WithFilter = 
+        new WithFilter(x => p(x) && q(x))
+    }
+
+    // A helper for tails and inits.
+    private def iterateUntilEmpty(f: Traversable[A @uV] => Traversable[A @uV]): Iterator[Repr] = {
+      val it = Iterator.iterate(thisCollection)(f) takeWhile (x => !x.isEmpty)
+      it ++ Iterator(Nil) map (newBuilder ++= _ result)
+    }
+  }
+
+
+</textarea>
+</form>
+
+    <script>
+      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
+        lineNumbers: true,
+        matchBrackets: true,
+        theme: "ambiance",
+        mode: "text/x-scala"
+      });
+    </script>
+  </article>
diff --git a/web/lib/clike/test.js b/web/lib/clike/test.js
new file mode 100644
index 0000000000000000000000000000000000000000..9441b959562658240b64671c0b2473d5083ca8a5
--- /dev/null
+++ b/web/lib/clike/test.js
@@ -0,0 +1,165 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: https://codemirror.net/LICENSE
+
+(function() {
+  var mode = CodeMirror.getMode({indentUnit: 2}, "text/x-c");
+  function MT(name) { test.mode(name, mode, Array.prototype.slice.call(arguments, 1)); }
+
+  MT("indent",
+     "[type void] [def foo]([type void*] [variable a], [type int] [variable b]) {",
+     "  [type int] [variable c] [operator =] [variable b] [operator +]",
+     "    [number 1];",
+     "  [keyword return] [operator *][variable a];",
+     "}");
+
+  MT("indent_switch",
+     "[keyword switch] ([variable x]) {",
+     "  [keyword case] [number 10]:",
+     "    [keyword return] [number 20];",
+     "  [keyword default]:",
+     "    [variable printf]([string \"foo %c\"], [variable x]);",
+     "}");
+
+  MT("def",
+     "[type void] [def foo]() {}",
+     "[keyword struct] [def bar]{}",
+     "[keyword enum] [def zot]{}",
+     "[keyword union] [def ugh]{}",
+     "[type int] [type *][def baz]() {}");
+
+  MT("def_new_line",
+     "::[variable std]::[variable SomeTerribleType][operator <][variable T][operator >]",
+     "[def SomeLongMethodNameThatDoesntFitIntoOneLine]([keyword const] [variable MyType][operator &] [variable param]) {}")
+
+  MT("double_block",
+     "[keyword for] (;;)",
+     "  [keyword for] (;;)",
+     "    [variable x][operator ++];",
+     "[keyword return];");
+
+  MT("preprocessor",
+     "[meta #define FOO 3]",
+     "[type int] [variable foo];",
+     "[meta #define BAR\\]",
+     "[meta 4]",
+     "[type unsigned] [type int] [variable bar] [operator =] [number 8];",
+     "[meta #include <baz> ][comment // comment]")
+
+  MT("c_underscores",
+     "[builtin __FOO];",
+     "[builtin _Complex];",
+     "[builtin __aName];",
+     "[variable _aName];");
+
+  MT("c_types",
+    "[type int];",
+    "[type long];",
+    "[type char];",
+    "[type short];",
+    "[type double];",
+    "[type float];",
+    "[type unsigned];",
+    "[type signed];",
+    "[type void];",
+    "[type bool];",
+    "[type foo_t];",
+    "[variable foo_T];",
+    "[variable _t];");
+
+  var mode_cpp = CodeMirror.getMode({indentUnit: 2}, "text/x-c++src");
+  function MTCPP(name) { test.mode(name, mode_cpp, Array.prototype.slice.call(arguments, 1)); }
+
+  MTCPP("cpp14_literal",
+    "[number 10'000];",
+    "[number 0b10'000];",
+    "[number 0x10'000];",
+    "[string '100000'];");
+
+  MTCPP("ctor_dtor",
+     "[def Foo::Foo]() {}",
+     "[def Foo::~Foo]() {}");
+
+  MTCPP("cpp_underscores",
+        "[builtin __FOO];",
+        "[builtin _Complex];",
+        "[builtin __aName];",
+        "[variable _aName];");
+
+  var mode_objc = CodeMirror.getMode({indentUnit: 2}, "text/x-objectivec");
+  function MTOBJC(name) { test.mode(name, mode_objc, Array.prototype.slice.call(arguments, 1)); }
+
+  MTOBJC("objc_underscores",
+         "[builtin __FOO];",
+         "[builtin _Complex];",
+         "[builtin __aName];",
+         "[variable _aName];");
+
+  MTOBJC("objc_interface",
+         "[keyword @interface] [def foo] {",
+         "  [type int] [variable bar];",
+         "}",
+         "[keyword @property] ([keyword atomic], [keyword nullable]) [variable NSString][operator *] [variable a];",
+         "[keyword @property] ([keyword nonatomic], [keyword assign]) [type int] [variable b];",
+         "[operator -]([type instancetype])[variable initWithFoo]:([type int])[variable a] " +
+           "[builtin NS_DESIGNATED_INITIALIZER];",
+         "[keyword @end]");
+
+  MTOBJC("objc_implementation",
+         "[keyword @implementation] [def foo] {",
+         "  [type int] [variable bar];",
+         "}",
+         "[keyword @property] ([keyword readwrite]) [type SEL] [variable a];",
+         "[operator -]([type instancetype])[variable initWithFoo]:([type int])[variable a] {",
+         "  [keyword if](([keyword self] [operator =] [[[keyword super] [variable init] ]])) {}",
+         "  [keyword return] [keyword self];",
+         "}",
+         "[keyword @end]");
+
+  MTOBJC("objc_types",
+         "[type int];",
+         "[type foo_t];",
+         "[variable foo_T];",
+         "[type id];",
+         "[type SEL];",
+         "[type instancetype];",
+         "[type Class];",
+         "[type Protocol];",
+         "[type BOOL];"
+         );
+
+  var mode_scala = CodeMirror.getMode({indentUnit: 2}, "text/x-scala");
+  function MTSCALA(name) { test.mode("scala_" + name, mode_scala, Array.prototype.slice.call(arguments, 1)); }
+  MTSCALA("nested_comments",
+     "[comment /*]",
+     "[comment But wait /* this is a nested comment */ for real]",
+     "[comment /**** let * me * show * you ****/]",
+     "[comment ///// let / me / show / you /////]",
+     "[comment */]");
+
+  var mode_java = CodeMirror.getMode({indentUnit: 2}, "text/x-java");
+  function MTJAVA(name) { test.mode("java_" + name, mode_java, Array.prototype.slice.call(arguments, 1)); }
+  MTJAVA("types",
+         "[type byte];",
+         "[type short];",
+         "[type int];",
+         "[type long];",
+         "[type float];",
+         "[type double];",
+         "[type boolean];",
+         "[type char];",
+         "[type void];",
+         "[type Boolean];",
+         "[type Byte];",
+         "[type Character];",
+         "[type Double];",
+         "[type Float];",
+         "[type Integer];",
+         "[type Long];",
+         "[type Number];",
+         "[type Object];",
+         "[type Short];",
+         "[type String];",
+         "[type StringBuffer];",
+         "[type StringBuilder];",
+         "[type Void];");
+})();