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[EDIT] FILE: go.js

// 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";

CodeMirror.defineMode("go", function(config) {
  var indentUnit = config.indentUnit;

var keywords = {
    "break":true, "case":true, "chan":true, "const":true, "continue":true,
    "default":true, "defer":true, "else":true, "fallthrough":true, "for":true,
    "func":true, "go":true, "goto":true, "if":true, "import":true,
    "interface":true, "map":true, "package":true, "range":true, "return":true,
    "select":true, "struct":true, "switch":true, "type":true, "var":true,
    "bool":true, "byte":true, "complex64":true, "complex128":true,
    "float32":true, "float64":true, "int8":true, "int16":true, "int32":true,
    "int64":true, "string":true, "uint8":true, "uint16":true, "uint32":true,
    "uint64":true, "int":true, "uint":true, "uintptr":true, "error": true,
    "rune":true
  };

var atoms = {
    "true":true, "false":true, "iota":true, "nil":true, "append":true,
    "cap":true, "close":true, "complex":true, "copy":true, "delete":true, "imag":true,
    "len":true, "make":true, "new":true, "panic":true, "print":true,
    "println":true, "real":true, "recover":true
  };

var isOperatorChar = /[+\-*&^%:=<>!|\/]/;

var curPunc;

// Interface

return {
    startState: function(basecolumn) {
      return {
        tokenize: null,
        context: new Context((basecolumn || 0) - indentUnit, 0, "top", false),
        indented: 0,
        startOfLine: true
      };
    },

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 (ctx.type == "case") ctx.type = "}";
      }
      if (stream.eatSpace()) return null;
      curPunc = null;
      var style = (state.tokenize || tokenBase)(stream, state);
      if (style == "comment") return style;
      if (ctx.align == null) ctx.align = true;

if (curPunc == "{") pushContext(state, stream.column(), "}");
      else if (curPunc == "[") pushContext(state, stream.column(), "]");
      else if (curPunc == "(") pushContext(state, stream.column(), ")");
      else if (curPunc == "case") ctx.type = "case";
      else if (curPunc == "}" && ctx.type == "}") popContext(state);
      else if (curPunc == ctx.type) popContext(state);
      state.startOfLine = false;
      return style;
    },

indent: function(state, textAfter) {
      if (state.tokenize != tokenBase && state.tokenize != null) return CodeMirror.Pass;
      var ctx = state.context, firstChar = textAfter && textAfter.charAt(0);
      if (ctx.type == "case" && /^(?:case|default)\b/.test(textAfter)) {
        state.context.type = "}";
        return ctx.indented;
      }
      var closing = firstChar == ctx.type;
      if (ctx.align) return ctx.column + (closing ? 0 : 1);
      else return ctx.indented + (closing ? 0 : indentUnit);
    },

electricChars: "{}):",
    closeBrackets: "()[]{}''\"\"``",
    fold: "brace",
    blockCommentStart: "/*",
    blockCommentEnd: "*/",
    lineComment: "//"
  };
});

CodeMirror.defineMIME("text/x-go", "go");

});

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