# CodeMirror: Any Word Completion Demo

(function() { "use strict"; var WORD = /[\w$]+/g, RANGE = 500; CodeMirror.registerHelper("hint", "anyword", function(editor, options) { var word = options && options.word || WORD; var range = options && options.range || RANGE; var cur = editor.getCursor(), curLine = editor.getLine(cur.line); var start = cur.ch, end = start; while (end < curLine.length && word.test(curLine.charAt(end))) ++end; while (start && word.test(curLine.charAt(start - 1))) --start; var curWord = start != end && curLine.slice(start, end); var list = [], seen = {}; function scan(dir) { var line = cur.line, end = Math.min(Math.max(line + dir * range, editor.firstLine()), editor.lastLine()) + dir; for (; line != end; line += dir) { var text = editor.getLine(line), m; word.lastIndex = 0; while (m = word.exec(text)) { if ((!curWord || m[0].indexOf(curWord) == 0) && !seen.hasOwnProperty(m[0])) { seen[m[0]] = true; list.push(m[0]); } } } } scan(-1); scan(1); return {list: list, from: CodeMirror.Pos(cur.line, start), to: CodeMirror.Pos(cur.line, end)}; }); })();

Press ctrl-space to activate autocompletion. The completion uses the anyword-hint.js module, which simply looks at nearby words in the buffer and completes to those.