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// CodeMirror, copyright (c) by Marijn Haverbeke and others
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// Distributed under an MIT license: https://codemirror.net/LICENSE
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(function(mod) {
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  if (typeof exports == "object" && typeof module == "object") // CommonJS
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    mod(require("../../lib/codemirror"));
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  else if (typeof define == "function" && define.amd) // AMD
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    define(["../../lib/codemirror"], mod);
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  else // Plain browser env
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    mod(CodeMirror);
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})(function(CodeMirror) {
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"use strict";
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CodeMirror.defineMode('shell', function() {
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  var words = {};
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  function define(style, dict) {
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    for(var i = 0; i < dict.length; i++) {
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      words[dict[i]] = style;
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    }
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  };
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  var commonAtoms = ["true", "false"];
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  var commonKeywords = ["if", "then", "do", "else", "elif", "while", "until", "for", "in", "esac", "fi",
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    "fin", "fil", "done", "exit", "set", "unset", "export", "function"];
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  var commonCommands = ["ab", "awk", "bash", "beep", "cat", "cc", "cd", "chown", "chmod", "chroot", "clear",
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    "cp", "curl", "cut", "diff", "echo", "find", "gawk", "gcc", "get", "git", "grep", "hg", "kill", "killall",
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    "ln", "ls", "make", "mkdir", "openssl", "mv", "nc", "nl", "node", "npm", "ping", "ps", "restart", "rm",
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    "rmdir", "sed", "service", "sh", "shopt", "shred", "source", "sort", "sleep", "ssh", "start", "stop",
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    "su", "sudo", "svn", "tee", "telnet", "top", "touch", "vi", "vim", "wall", "wc", "wget", "who", "write",
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    "yes", "zsh"];
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  CodeMirror.registerHelper("hintWords", "shell", commonAtoms.concat(commonKeywords, commonCommands));
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  define('atom', commonAtoms);
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  define('keyword', commonKeywords);
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  define('builtin', commonCommands);
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  function tokenBase(stream, state) {
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    if (stream.eatSpace()) return null;
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    var sol = stream.sol();
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    var ch = stream.next();
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    if (ch === '\\') {
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      stream.next();
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      return null;
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    }
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    if (ch === '\'' || ch === '"' || ch === '`') {
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      state.tokens.unshift(tokenString(ch, ch === "`" ? "quote" : "string"));
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      return tokenize(stream, state);
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    }
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    if (ch === '#') {
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      if (sol && stream.eat('!')) {
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        stream.skipToEnd();
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        return 'meta'; // 'comment'?
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      }
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      stream.skipToEnd();
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      return 'comment';
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    }
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    if (ch === '$') {
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      state.tokens.unshift(tokenDollar);
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      return tokenize(stream, state);
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    }
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    if (ch === '+' || ch === '=') {
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      return 'operator';
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    }
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    if (ch === '-') {
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      stream.eat('-');
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      stream.eatWhile(/\w/);
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      return 'attribute';
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    }
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    if (ch == "<") {
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      if (stream.match("<<")) return "operator"
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      var heredoc = stream.match(/^<-?\s*['"]?([^'"]*)['"]?/)
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      if (heredoc) {
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        state.tokens.unshift(tokenHeredoc(heredoc[1]))
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        return 'string-2'
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      }
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    }
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    if (/\d/.test(ch)) {
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      stream.eatWhile(/\d/);
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      if(stream.eol() || !/\w/.test(stream.peek())) {
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        return 'number';
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      }
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    }
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    stream.eatWhile(/[\w-]/);
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    var cur = stream.current();
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    if (stream.peek() === '=' && /\w+/.test(cur)) return 'def';
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    return words.hasOwnProperty(cur) ? words[cur] : null;
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  }
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  function tokenString(quote, style) {
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    var close = quote == "(" ? ")" : quote == "{" ? "}" : quote
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    return function(stream, state) {
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      var next, escaped = false;
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      while ((next = stream.next()) != null) {
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        if (next === close && !escaped) {
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          state.tokens.shift();
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          break;
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        } else if (next === '$' && !escaped && quote !== "'" && stream.peek() != close) {
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          escaped = true;
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          stream.backUp(1);
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          state.tokens.unshift(tokenDollar);
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          break;
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        } else if (!escaped && quote !== close && next === quote) {
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          state.tokens.unshift(tokenString(quote, style))
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          return tokenize(stream, state)
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        } else if (!escaped && /['"]/.test(next) && !/['"]/.test(quote)) {
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          state.tokens.unshift(tokenStringStart(next, "string"));
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          stream.backUp(1);
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          break;
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        }
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        escaped = !escaped && next === '\\';
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      }
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      return style;
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    };
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  };
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  function tokenStringStart(quote, style) {
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    return function(stream, state) {
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      state.tokens[0] = tokenString(quote, style)
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      stream.next()
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      return tokenize(stream, state)
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    }
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  }
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  var tokenDollar = function(stream, state) {
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    if (state.tokens.length > 1) stream.eat('$');
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    var ch = stream.next()
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    if (/['"({]/.test(ch)) {
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      state.tokens[0] = tokenString(ch, ch == "(" ? "quote" : ch == "{" ? "def" : "string");
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      return tokenize(stream, state);
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    }
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    if (!/\d/.test(ch)) stream.eatWhile(/\w/);
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    state.tokens.shift();
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    return 'def';
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  };
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  function tokenHeredoc(delim) {
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    return function(stream, state) {
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      if (stream.sol() && stream.string == delim) state.tokens.shift()
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      stream.skipToEnd()
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      return "string-2"
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    }
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  }
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  function tokenize(stream, state) {
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    return (state.tokens[0] || tokenBase) (stream, state);
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  };
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  return {
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    startState: function() {return {tokens:[]};},
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    token: function(stream, state) {
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      return tokenize(stream, state);
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    },
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    closeBrackets: "()[]{}''\"\"``",
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    lineComment: '#',
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    fold: "brace"
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  };
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});
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CodeMirror.defineMIME('text/x-sh', 'shell');
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// Apache uses a slightly different Media Type for Shell scripts
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// http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types
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CodeMirror.defineMIME('application/x-sh', 'shell');
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});
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