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// CodeMirror, copyright (c) by Marijn Haverbeke and others

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// Distributed under an MIT license: http://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, string) {

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var split = string.split(' ');

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for(var i = 0; i < split.length; i++) {

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words[split[i]] = style;

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}

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};

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// Atoms

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define('atom', 'true false');

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// Keywords

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define('keyword', 'if then do else elif while until for in esac fi fin ' +

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'fil done exit set unset export function');

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// Commands

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define('builtin', 'ab awk bash beep cat cc cd chown chmod chroot clear cp ' +

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'curl cut diff echo find gawk gcc get git grep kill killall ln ls make ' +

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'mkdir openssl mv nc node npm ping ps restart rm rmdir sed service sh ' +

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'shopt shred source sort sleep ssh start stop su sudo tee telnet top ' +

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'touch vi vim wall wc wget who write yes zsh');

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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));

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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 (/\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) {

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return function(stream, state) {

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var next, end = false, escaped = false;

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while ((next = stream.next()) != null) {

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if (next === quote && !escaped) {

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end = true;

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break;

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}

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if (next === '$' && !escaped && quote !== '\'') {

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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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}

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escaped = !escaped && next === '\\';

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}

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if (end || !escaped) {

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state.tokens.shift();

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}

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return (quote === '`' || quote === ')' ? 'quote' : 'string');

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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(), hungry = /\w/;

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if (ch === '{') hungry = /[^}]/;

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if (ch === '(') {

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state.tokens[0] = tokenString(')');

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return tokenize(stream, state);

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}

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if (!/\d/.test(ch)) {

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stream.eatWhile(hungry);

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stream.eat('}');

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}

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state.tokens.shift();

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return 'def';

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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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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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});

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