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+/*********************                                                        */
+/*! \file didyoumean.h
+ ** \verbatim
+ ** Original author: Kshitij Bansal
+ ** Major contributors: none
+ ** Minor contributors (to current version): none
+ ** This file is part of the CVC4 project.
+ ** Copyright (c) 2009-2014  New York University and The University of Iowa
+ ** See the file COPYING in the top-level source directory for licensing
+ ** information.\endverbatim
+ **
+ ** \brief did-you-mean style suggestions.
+ **
+ ** ``What do you mean? I don't understand.'' An attempt to be more
+ ** helpful than that. Similar to one in git.
+ **
+ ** There are no dependencies on CVC4 (except namespace).
+ **/
+
+#pragma once
+
+#include <vector>
+#include <set>
+#include <string>
+
+namespace CVC4 {
+
+class DidYouMean {
+  typedef std::set<std::string> Words;
+  Words d_words;
+
+public:
+  DidYouMean() {}
+  ~DidYouMean() {}
+
+  DidYouMean(Words words) : d_words(words) {}
+
+  void addWord(std::string word) {
+    d_words.insert(word);
+  }
+
+  std::vector<std::string> getMatch(std::string input);
+
+  /**
+   * This is provided to make it easier to ensure consistency of
+   * output. Returned string is empty if there are no matches.
+   */
+  std::string getMatchAsString(std::string input, int prefixNewLines = 2, int suffixNewLines = 0);
+private:
+  int editDistance(const std::string& a, const std::string& b);
+};
+
+}/*CVC4 namespace*/