diff --git a/externals/porter-stemmer/LICENSE b/externals/porter-stemmer/LICENSE
deleted file mode 100644
--- a/externals/porter-stemmer/LICENSE
+++ /dev/null
@@ -1,20 +0,0 @@
-The MIT License (MIT)
-
-Copyright (c) 2005-2016 Richard Heyes (http://www.phpguru.org/)
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/externals/porter-stemmer/README.md b/externals/porter-stemmer/README.md
deleted file mode 100644
--- a/externals/porter-stemmer/README.md
+++ /dev/null
@@ -1,42 +0,0 @@
-# Porter Stemmer by Richard Heyes
-
-# Installation (with composer)
-
-```json
-{
-	"require": {
-		"camspiers/porter-stemmer": "1.0.0"
-	}
-}
-```
-
-	$ composer install
-
-# Usage
-
-```php
-$stem = Porter::Stem($word);
-```
-
-# License
-
-The MIT License (MIT)
-
-Copyright (c) 2005-2016 Richard Heyes (http://www.phpguru.org/)
-
-Permission is hereby granted, free of charge, to any person obtaining a copy of
-this software and associated documentation files (the "Software"), to deal in
-the Software without restriction, including without limitation the rights to
-use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
-the Software, and to permit persons to whom the Software is furnished to do so,
-subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in all
-copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
-FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
-COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
-IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
-CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/externals/porter-stemmer/src/Porter.php b/externals/porter-stemmer/src/Porter.php
deleted file mode 100644
--- a/externals/porter-stemmer/src/Porter.php
+++ /dev/null
@@ -1,426 +0,0 @@
-<?php
-
-# vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4:
-
-/**
- * Copyright (c) 2005-2016 Richard Heyes (http://www.phpguru.org/)
- *
- * Portions Copyright 2003-2007 Jon Abernathy <jon@chuggnutt.com>
- *
- * Originally available under the GPL 2 or greater. Relicensed with permission
- * of original authors under the MIT License in 2016.
- *
- * All rights reserved.
- *
- * @package   PorterStemmer
- * @author    Richard Heyes
- * @author    Jon Abernathy <jon@chuggnutt.com>
- * @copyright 2005-2016 Richard Heyes (http://www.phpguru.org/)
- * @license   http://www.opensource.org/licenses/mit-license.html MIT License
- */
-
-/**
- * PHP 5 Implementation of the Porter Stemmer algorithm. Certain elements
- * were borrowed from the (broken) implementation by Jon Abernathy.
- *
- * See http://tartarus.org/~martin/PorterStemmer/ for a description of the
- * algorithm.
- *
- * Usage:
- *
- *  $stem = PorterStemmer::Stem($word);
- *
- * How easy is that?
- *
- * @package   PorterStemmer
- * @author    Richard Heyes
- * @author    Jon Abernathy <jon@chuggnutt.com>
- * @copyright 2005-2016 Richard Heyes (http://www.phpguru.org/)
- * @license   http://www.opensource.org/licenses/mit-license.html MIT License
- */
-class Porter
-{
-    /**
-     * Regex for matching a consonant
-     *
-     * @var string
-     */
-    private static $regex_consonant = '(?:[bcdfghjklmnpqrstvwxz]|(?<=[aeiou])y|^y)';
-
-    /**
-     * Regex for matching a vowel
-     *
-     * @var string
-     */
-    private static $regex_vowel = '(?:[aeiou]|(?<![aeiou])y)';
-
-    /**
-     * Stems a word. Simple huh?
-     *
-     * @param string $word Word to stem
-     *
-     * @return string Stemmed word
-     */
-    public static function Stem($word)
-    {
-        if (strlen($word) <= 2) {
-            return $word;
-        }
-
-        $word = self::step1ab($word);
-        $word = self::step1c($word);
-        $word = self::step2($word);
-        $word = self::step3($word);
-        $word = self::step4($word);
-        $word = self::step5($word);
-
-        return $word;
-    }
-
-    /**
-     * Step 1
-     */
-    private static function step1ab($word)
-    {
-        // Part a
-        if (substr($word, -1) == 's') {
-
-               self::replace($word, 'sses', 'ss')
-            OR self::replace($word, 'ies', 'i')
-            OR self::replace($word, 'ss', 'ss')
-            OR self::replace($word, 's', '');
-        }
-
-        // Part b
-        if (substr($word, -2, 1) != 'e' OR !self::replace($word, 'eed', 'ee', 0)) { // First rule
-            $v = self::$regex_vowel;
-
-            // ing and ed
-            if (   preg_match("#$v+#", substr($word, 0, -3)) && self::replace($word, 'ing', '')
-                OR preg_match("#$v+#", substr($word, 0, -2)) && self::replace($word, 'ed', '')) { // Note use of && and OR, for precedence reasons
-
-                // If one of above two test successful
-                if (    !self::replace($word, 'at', 'ate')
-                    AND !self::replace($word, 'bl', 'ble')
-                    AND !self::replace($word, 'iz', 'ize')) {
-
-                    // Double consonant ending
-                    if (    self::doubleConsonant($word)
-                        AND substr($word, -2) != 'll'
-                        AND substr($word, -2) != 'ss'
-                        AND substr($word, -2) != 'zz') {
-
-                        $word = substr($word, 0, -1);
-
-                    } elseif (self::m($word) == 1 AND self::cvc($word)) {
-                        $word .= 'e';
-                    }
-                }
-            }
-        }
-
-        return $word;
-    }
-
-    /**
-     * Step 1c
-     *
-     * @param string $word Word to stem
-     */
-    private static function step1c($word)
-    {
-        $v = self::$regex_vowel;
-
-        if (substr($word, -1) == 'y' && preg_match("#$v+#", substr($word, 0, -1))) {
-            self::replace($word, 'y', 'i');
-        }
-
-        return $word;
-    }
-
-    /**
-     * Step 2
-     *
-     * @param string $word Word to stem
-     */
-    private static function step2($word)
-    {
-        switch (substr($word, -2, 1)) {
-            case 'a':
-                   self::replace($word, 'ational', 'ate', 0)
-                OR self::replace($word, 'tional', 'tion', 0);
-                break;
-
-            case 'c':
-                   self::replace($word, 'enci', 'ence', 0)
-                OR self::replace($word, 'anci', 'ance', 0);
-                break;
-
-            case 'e':
-                self::replace($word, 'izer', 'ize', 0);
-                break;
-
-            case 'g':
-                self::replace($word, 'logi', 'log', 0);
-                break;
-
-            case 'l':
-                   self::replace($word, 'entli', 'ent', 0)
-                OR self::replace($word, 'ousli', 'ous', 0)
-                OR self::replace($word, 'alli', 'al', 0)
-                OR self::replace($word, 'bli', 'ble', 0)
-                OR self::replace($word, 'eli', 'e', 0);
-                break;
-
-            case 'o':
-                   self::replace($word, 'ization', 'ize', 0)
-                OR self::replace($word, 'ation', 'ate', 0)
-                OR self::replace($word, 'ator', 'ate', 0);
-                break;
-
-            case 's':
-                   self::replace($word, 'iveness', 'ive', 0)
-                OR self::replace($word, 'fulness', 'ful', 0)
-                OR self::replace($word, 'ousness', 'ous', 0)
-                OR self::replace($word, 'alism', 'al', 0);
-                break;
-
-            case 't':
-                   self::replace($word, 'biliti', 'ble', 0)
-                OR self::replace($word, 'aliti', 'al', 0)
-                OR self::replace($word, 'iviti', 'ive', 0);
-                break;
-        }
-
-        return $word;
-    }
-
-    /**
-     * Step 3
-     *
-     * @param string $word String to stem
-     */
-    private static function step3($word)
-    {
-        switch (substr($word, -2, 1)) {
-            case 'a':
-                self::replace($word, 'ical', 'ic', 0);
-                break;
-
-            case 's':
-                self::replace($word, 'ness', '', 0);
-                break;
-
-            case 't':
-                   self::replace($word, 'icate', 'ic', 0)
-                OR self::replace($word, 'iciti', 'ic', 0);
-                break;
-
-            case 'u':
-                self::replace($word, 'ful', '', 0);
-                break;
-
-            case 'v':
-                self::replace($word, 'ative', '', 0);
-                break;
-
-            case 'z':
-                self::replace($word, 'alize', 'al', 0);
-                break;
-        }
-
-        return $word;
-    }
-
-    /**
-     * Step 4
-     *
-     * @param string $word Word to stem
-     */
-    private static function step4($word)
-    {
-        switch (substr($word, -2, 1)) {
-            case 'a':
-                self::replace($word, 'al', '', 1);
-                break;
-
-            case 'c':
-                   self::replace($word, 'ance', '', 1)
-                OR self::replace($word, 'ence', '', 1);
-                break;
-
-            case 'e':
-                self::replace($word, 'er', '', 1);
-                break;
-
-            case 'i':
-                self::replace($word, 'ic', '', 1);
-                break;
-
-            case 'l':
-                   self::replace($word, 'able', '', 1)
-                OR self::replace($word, 'ible', '', 1);
-                break;
-
-            case 'n':
-                   self::replace($word, 'ant', '', 1)
-                OR self::replace($word, 'ement', '', 1)
-                OR self::replace($word, 'ment', '', 1)
-                OR self::replace($word, 'ent', '', 1);
-                break;
-
-            case 'o':
-                if (substr($word, -4) == 'tion' OR substr($word, -4) == 'sion') {
-                   self::replace($word, 'ion', '', 1);
-                } else {
-                    self::replace($word, 'ou', '', 1);
-                }
-                break;
-
-            case 's':
-                self::replace($word, 'ism', '', 1);
-                break;
-
-            case 't':
-                   self::replace($word, 'ate', '', 1)
-                OR self::replace($word, 'iti', '', 1);
-                break;
-
-            case 'u':
-                self::replace($word, 'ous', '', 1);
-                break;
-
-            case 'v':
-                self::replace($word, 'ive', '', 1);
-                break;
-
-            case 'z':
-                self::replace($word, 'ize', '', 1);
-                break;
-        }
-
-        return $word;
-    }
-
-    /**
-     * Step 5
-     *
-     * @param string $word Word to stem
-     */
-    private static function step5($word)
-    {
-        // Part a
-        if (substr($word, -1) == 'e') {
-            if (self::m(substr($word, 0, -1)) > 1) {
-                self::replace($word, 'e', '');
-
-            } elseif (self::m(substr($word, 0, -1)) == 1) {
-
-                if (!self::cvc(substr($word, 0, -1))) {
-                    self::replace($word, 'e', '');
-                }
-            }
-        }
-
-        // Part b
-        if (self::m($word) > 1 AND self::doubleConsonant($word) AND substr($word, -1) == 'l') {
-            $word = substr($word, 0, -1);
-        }
-
-        return $word;
-    }
-
-    /**
-     * Replaces the first string with the second, at the end of the string
-     *
-     * If third arg is given, then the preceding string must match that m
-     * count at least.
-     *
-     * @param  string $str   String to check
-     * @param  string $check Ending to check for
-     * @param  string $repl  Replacement string
-     * @param  int    $m     Optional minimum number of m() to meet
-     *
-     * @return bool Whether the $check string was at the end of the $str
-     *              string. True does not necessarily mean that it was
-     *              replaced.
-     */
-    private static function replace(&$str, $check, $repl, $m = null)
-    {
-        $len = 0 - strlen($check);
-
-        if (substr($str, $len) == $check) {
-            $substr = substr($str, 0, $len);
-            if (is_null($m) OR self::m($substr) > $m) {
-                $str = $substr . $repl;
-            }
-
-            return true;
-        }
-
-        return false;
-    }
-
-    /**
-     * What, you mean it's not obvious from the name?
-     *
-     * m() measures the number of consonant sequences in $str. if c is
-     * a consonant sequence and v a vowel sequence, and <..> indicates arbitrary
-     * presence,
-     *
-     * <c><v>       gives 0
-     * <c>vc<v>     gives 1
-     * <c>vcvc<v>   gives 2
-     * <c>vcvcvc<v> gives 3
-     *
-     * @param  string $str The string to return the m count for
-     *
-     * @return int The m count
-     */
-    private static function m($str)
-    {
-        $c = self::$regex_consonant;
-        $v = self::$regex_vowel;
-
-        $str = preg_replace("#^$c+#", '', $str);
-        $str = preg_replace("#$v+$#", '', $str);
-
-        preg_match_all("#($v+$c+)#", $str, $matches);
-
-        return count($matches[1]);
-    }
-
-    /**
-     * Returns true/false as to whether the given string contains two
-     * of the same consonant next to each other at the end of the string.
-     *
-     * @param  string $str String to check
-     *
-     * @return bool Result
-     */
-    private static function doubleConsonant($str)
-    {
-        $c = self::$regex_consonant;
-
-        return preg_match("#$c{2}$#", $str, $matches) AND $matches[0]{0} == $matches[0]{1};
-    }
-
-    /**
-     * Checks for ending CVC sequence where second C is not W, X or Y
-     *
-     * @param  string $str String to check
-     *
-     * @return bool Result
-     */
-    private static function cvc($str)
-    {
-        $c = self::$regex_consonant;
-        $v = self::$regex_vowel;
-
-        return     preg_match("#($c$v$c)$#", $str, $matches)
-               AND strlen($matches[1]) == 3
-               AND $matches[1]{2} != 'w'
-               AND $matches[1]{2} != 'x'
-               AND $matches[1]{2} != 'y';
-    }
-}
diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -317,12 +317,6 @@
     'PhutilSafeHTMLProducerInterface' => 'markup/PhutilSafeHTMLProducerInterface.php',
     'PhutilSafeHTMLTestCase' => 'markup/__tests__/PhutilSafeHTMLTestCase.php',
     'PhutilSaturateStdoutDaemon' => 'daemon/torture/PhutilSaturateStdoutDaemon.php',
-    'PhutilSearchQueryCompiler' => 'search/PhutilSearchQueryCompiler.php',
-    'PhutilSearchQueryCompilerSyntaxException' => 'search/PhutilSearchQueryCompilerSyntaxException.php',
-    'PhutilSearchQueryCompilerTestCase' => 'search/__tests__/PhutilSearchQueryCompilerTestCase.php',
-    'PhutilSearchQueryToken' => 'search/PhutilSearchQueryToken.php',
-    'PhutilSearchStemmer' => 'search/PhutilSearchStemmer.php',
-    'PhutilSearchStemmerTestCase' => 'search/__tests__/PhutilSearchStemmerTestCase.php',
     'PhutilServiceProfiler' => 'serviceprofiler/PhutilServiceProfiler.php',
     'PhutilShellLexer' => 'lexer/PhutilShellLexer.php',
     'PhutilShellLexerTestCase' => 'lexer/__tests__/PhutilShellLexerTestCase.php',
@@ -860,12 +854,6 @@
     'PhutilSafeHTML' => 'Phobject',
     'PhutilSafeHTMLTestCase' => 'PhutilTestCase',
     'PhutilSaturateStdoutDaemon' => 'PhutilTortureTestDaemon',
-    'PhutilSearchQueryCompiler' => 'Phobject',
-    'PhutilSearchQueryCompilerSyntaxException' => 'Exception',
-    'PhutilSearchQueryCompilerTestCase' => 'PhutilTestCase',
-    'PhutilSearchQueryToken' => 'Phobject',
-    'PhutilSearchStemmer' => 'Phobject',
-    'PhutilSearchStemmerTestCase' => 'PhutilTestCase',
     'PhutilServiceProfiler' => 'Phobject',
     'PhutilShellLexer' => 'PhutilLexer',
     'PhutilShellLexerTestCase' => 'PhutilTestCase',
diff --git a/src/search/PhutilSearchQueryCompiler.php b/src/search/PhutilSearchQueryCompiler.php
deleted file mode 100644
--- a/src/search/PhutilSearchQueryCompiler.php
+++ /dev/null
@@ -1,374 +0,0 @@
-<?php
-
-final class PhutilSearchQueryCompiler
-  extends Phobject {
-
-  private $operators = '+ -><()~*:""&|';
-  private $query;
-  private $stemmer;
-  private $enableFunctions = false;
-
-  const OPERATOR_NOT = 'not';
-  const OPERATOR_AND = 'and';
-  const OPERATOR_SUBSTRING = 'sub';
-  const OPERATOR_EXACT = 'exact';
-
-  public function setOperators($operators) {
-    $this->operators = $operators;
-    return $this;
-  }
-
-  public function getOperators() {
-    return $this->operators;
-  }
-
-  public function setStemmer(PhutilSearchStemmer $stemmer) {
-    $this->stemmer = $stemmer;
-    return $this;
-  }
-
-  public function getStemmer() {
-    return $this->stemmer;
-  }
-
-  public function setEnableFunctions($enable_functions) {
-    $this->enableFunctions = $enable_functions;
-    return $this;
-  }
-
-  public function getEnableFunctions() {
-    return $this->enableFunctions;
-  }
-
-  public function compileQuery(array $tokens) {
-    assert_instances_of($tokens, 'PhutilSearchQueryToken');
-
-    $result = array();
-    foreach ($tokens as $token) {
-      $result[] = $this->renderToken($token);
-    }
-
-    return $this->compileRenderedTokens($result);
-  }
-
-  public function compileLiteralQuery(array $tokens) {
-    assert_instances_of($tokens, 'PhutilSearchQueryToken');
-
-    $result = array();
-    foreach ($tokens as $token) {
-      if (!$token->isQuoted()) {
-        continue;
-      }
-      $result[] = $this->renderToken($token);
-    }
-
-    return $this->compileRenderedTokens($result);
-  }
-
-  public function compileStemmedQuery(array $tokens) {
-    assert_instances_of($tokens, 'PhutilSearchQueryToken');
-
-    $result = array();
-    foreach ($tokens as $token) {
-      if ($token->isQuoted()) {
-        continue;
-      }
-      $result[] = $this->renderToken($token, $this->getStemmer());
-    }
-
-    return $this->compileRenderedTokens($result);
-  }
-
-  private function compileRenderedTokens(array $list) {
-    if (!$list) {
-      return null;
-    }
-
-    $list = array_unique($list);
-    return implode(' ', $list);
-  }
-
-  public function newTokens($query) {
-    $results = $this->tokenizeQuery($query);
-
-    $tokens = array();
-    foreach ($results as $result) {
-      $tokens[] = PhutilSearchQueryToken::newFromDictionary($result);
-    }
-
-    return $tokens;
-  }
-
-  private function tokenizeQuery($query) {
-    $maximum_bytes = 1024;
-
-    $query_bytes = strlen($query);
-    if ($query_bytes > $maximum_bytes) {
-      throw new PhutilSearchQueryCompilerSyntaxException(
-        pht(
-          'Query is too long (%s bytes, maximum is %s bytes).',
-          new PhutilNumber($query_bytes),
-          new PhutilNumber($maximum_bytes)));
-    }
-
-    $query = phutil_utf8v($query);
-    $length = count($query);
-
-    $enable_functions = $this->getEnableFunctions();
-
-    $mode = 'scan';
-    $current_operator = array();
-    $current_token = array();
-    $current_function = null;
-    $is_quoted = false;
-    $tokens = array();
-
-    if ($enable_functions) {
-      $operator_characters = '[~=+-]';
-    } else {
-      $operator_characters = '[+-]';
-    }
-
-    for ($ii = 0; $ii < $length; $ii++) {
-      $character = $query[$ii];
-
-      if ($mode == 'scan') {
-        if (preg_match('/^\s\z/u', $character)) {
-          continue;
-        }
-
-        $mode = 'function';
-      }
-
-      if ($mode == 'function') {
-        $mode = 'operator';
-
-        if ($enable_functions) {
-          $found = false;
-          for ($jj = $ii; $jj < $length; $jj++) {
-            if (preg_match('/^[a-zA-Z]\z/u', $query[$jj])) {
-              continue;
-            }
-            if ($query[$jj] == ':') {
-              $found = $jj;
-            }
-            break;
-          }
-
-          if ($found !== false) {
-            $function = array_slice($query, $ii, ($jj - $ii));
-            $current_function = implode('', $function);
-
-            if (!strlen($current_function)) {
-              $current_function = null;
-            }
-
-            $ii = $jj;
-            continue;
-          }
-        }
-      }
-
-      if ($mode == 'operator') {
-        if (preg_match('/^\s\z/u', $character)) {
-          continue;
-        }
-
-        if (preg_match('/^'.$operator_characters.'\z/', $character)) {
-          $current_operator[] = $character;
-          continue;
-        }
-
-        $mode = 'quote';
-      }
-
-      if ($mode == 'quote') {
-        if (preg_match('/^"\z/', $character)) {
-          $is_quoted = true;
-          $mode = 'token';
-          continue;
-        }
-
-        $mode = 'token';
-      }
-
-      if ($mode == 'token') {
-        $capture = false;
-        $was_quoted = $is_quoted;
-        if ($is_quoted) {
-          if (preg_match('/^"\z/', $character)) {
-            $capture = true;
-            $mode = 'scan';
-            $is_quoted = false;
-          }
-        } else {
-          if (preg_match('/^\s\z/u', $character)) {
-            $capture = true;
-            $mode = 'scan';
-          }
-
-          if (preg_match('/^"\z/', $character)) {
-            $capture = true;
-            $mode = 'token';
-            $is_quoted = true;
-          }
-        }
-
-        if ($capture) {
-          $token = array(
-            'operator' => $current_operator,
-            'quoted' => $was_quoted,
-            'value' => $current_token,
-          );
-
-          if ($enable_functions) {
-            $token['function'] = $current_function;
-          }
-
-          $tokens[] = $token;
-
-          $current_operator = array();
-          $current_token = array();
-          $current_function = null;
-          continue;
-        } else {
-          $current_token[] = $character;
-        }
-      }
-    }
-
-    if ($is_quoted) {
-      throw new PhutilSearchQueryCompilerSyntaxException(
-        pht(
-          'Query contains unmatched double quotes.'));
-    }
-
-    if ($mode == 'operator') {
-      throw new PhutilSearchQueryCompilerSyntaxException(
-        pht(
-          'Query contains operator ("%s") with no search term.',
-          implode('', $current_operator)));
-    }
-
-    $token = array(
-      'operator' => $current_operator,
-      'quoted' => false,
-      'value' => $current_token,
-    );
-
-    if ($enable_functions) {
-      $token['function'] = $current_function;
-    }
-
-    $tokens[] = $token;
-
-    $results = array();
-    foreach ($tokens as $token) {
-      $value = implode('', $token['value']);
-      $operator_string = implode('', $token['operator']);
-
-      if (!strlen($value)) {
-        continue;
-      }
-
-      $is_quoted = $token['quoted'];
-
-      switch ($operator_string) {
-        case '-':
-          $operator = self::OPERATOR_NOT;
-          break;
-        case '~':
-          $operator = self::OPERATOR_SUBSTRING;
-          break;
-        case '=':
-          $operator = self::OPERATOR_EXACT;
-          break;
-        case '+':
-          $operator = self::OPERATOR_AND;
-          break;
-        case '':
-          // See T12995. If this query term contains Chinese, Japanese or
-          // Korean characters, treat the term as a substring term by default.
-          // These languages do not separate words with spaces, so the term
-          // search mode is normally useless.
-          if ($enable_functions && !$is_quoted && phutil_utf8_is_cjk($value)) {
-            $operator = self::OPERATOR_SUBSTRING;
-          } else {
-            $operator = self::OPERATOR_AND;
-          }
-          break;
-        default:
-          throw new PhutilSearchQueryCompilerSyntaxException(
-            pht(
-              'Query has an invalid sequence of operators ("%s").',
-              $operator_string));
-      }
-
-      $result = array(
-        'operator' => $operator,
-        'quoted' => $is_quoted,
-        'value' => $value,
-      );
-
-      if ($enable_functions) {
-        $result['function'] = $token['function'];
-      }
-
-      $results[] = $result;
-    }
-
-    return $results;
-  }
-
-  private function renderToken(
-    PhutilSearchQueryToken $token,
-    PhutilSearchStemmer $stemmer = null) {
-    $value = $token->getValue();
-
-    if ($stemmer) {
-      $value = $stemmer->stemToken($value);
-    }
-
-    $value = $this->quoteToken($value);
-    $operator = $token->getOperator();
-    $prefix = $this->getOperatorPrefix($operator);
-
-    $value = $prefix.$value;
-
-    return $value;
-  }
-
-  private function getOperatorPrefix($operator) {
-    $operators = $this->operators;
-
-    switch ($operator) {
-      case self::OPERATOR_AND:
-        $prefix = $operators[0];
-        break;
-      case self::OPERATOR_NOT:
-        $prefix = $operators[2];
-        break;
-      default:
-        throw new PhutilSearchQueryCompilerSyntaxException(
-          pht(
-            'Unsupported operator prefix "%s".',
-            $operator));
-    }
-
-    if ($prefix == ' ') {
-      $prefix = null;
-    }
-
-    return $prefix;
-  }
-
-  private function quoteToken($value) {
-    $operators = $this->operators;
-
-    $open_quote = $this->operators[10];
-    $close_quote = $this->operators[11];
-
-    return $open_quote.$value.$close_quote;
-  }
-
-}
diff --git a/src/search/PhutilSearchQueryCompilerSyntaxException.php b/src/search/PhutilSearchQueryCompilerSyntaxException.php
deleted file mode 100644
--- a/src/search/PhutilSearchQueryCompilerSyntaxException.php
+++ /dev/null
@@ -1,4 +0,0 @@
-<?php
-
-final class PhutilSearchQueryCompilerSyntaxException
-  extends Exception {}
diff --git a/src/search/PhutilSearchQueryToken.php b/src/search/PhutilSearchQueryToken.php
deleted file mode 100644
--- a/src/search/PhutilSearchQueryToken.php
+++ /dev/null
@@ -1,37 +0,0 @@
-<?php
-
-final class PhutilSearchQueryToken extends Phobject {
-
-  private $isQuoted;
-  private $value;
-  private $operator;
-  private $function;
-
-  public static function newFromDictionary(array $dictionary) {
-    $token = new self();
-
-    $token->isQuoted = $dictionary['quoted'];
-    $token->operator = $dictionary['operator'];
-    $token->value = $dictionary['value'];
-    $token->function = idx($dictionary, 'function');
-
-    return $token;
-  }
-
-  public function isQuoted() {
-    return $this->isQuoted;
-  }
-
-  public function getValue() {
-    return $this->value;
-  }
-
-  public function getOperator() {
-    return $this->operator;
-  }
-
-  public function getFunction() {
-    return $this->function;
-  }
-
-}
diff --git a/src/search/PhutilSearchStemmer.php b/src/search/PhutilSearchStemmer.php
deleted file mode 100644
--- a/src/search/PhutilSearchStemmer.php
+++ /dev/null
@@ -1,74 +0,0 @@
-<?php
-
-final class PhutilSearchStemmer
-  extends Phobject {
-
-  public function stemToken($token) {
-    $token = $this->normalizeToken($token);
-    return $this->applyStemmer($token);
-  }
-
-  public function stemCorpus($corpus) {
-    $corpus = $this->normalizeCorpus($corpus);
-    $tokens = preg_split('/[^a-zA-Z0-9\x7F-\xFF._]+/', $corpus);
-
-    $words = array();
-    foreach ($tokens as $key => $token) {
-      $token = trim($token, '._');
-
-      if (strlen($token) < 3) {
-        continue;
-      }
-
-      $words[$token] = $token;
-    }
-
-    $stems = array();
-    foreach ($words as $word) {
-      $stems[] = $this->applyStemmer($word);
-    }
-
-    return implode(' ', $stems);
-  }
-
-  private function normalizeToken($token) {
-    return phutil_utf8_strtolower($token);
-  }
-
-  private function normalizeCorpus($corpus) {
-    return phutil_utf8_strtolower($corpus);
-  }
-
-  /**
-   * @phutil-external-symbol class Porter
-   */
-  private function applyStemmer($normalized_token) {
-    // If the token has internal punctuation, handle it literally. This
-    // deals with things like domain names, Conduit API methods, and other
-    // sorts of informal tokens.
-    if (preg_match('/[._]/', $normalized_token)) {
-      return $normalized_token;
-    }
-
-    static $loaded;
-
-    if ($loaded === null) {
-      $root = dirname(phutil_get_library_root('phutil'));
-      require_once $root.'/externals/porter-stemmer/src/Porter.php';
-      $loaded = true;
-    }
-
-
-    $stem = Porter::stem($normalized_token);
-
-    // If the stem is too short, it won't be a candidate for indexing. These
-    // tokens are also likely to be acronyms (like "DNS") rather than real
-    // English words.
-    if (strlen($stem) < 3) {
-      return $normalized_token;
-    }
-
-    return $stem;
-  }
-
-}
diff --git a/src/search/__tests__/PhutilSearchQueryCompilerTestCase.php b/src/search/__tests__/PhutilSearchQueryCompilerTestCase.php
deleted file mode 100644
--- a/src/search/__tests__/PhutilSearchQueryCompilerTestCase.php
+++ /dev/null
@@ -1,220 +0,0 @@
-<?php
-
-final class PhutilSearchQueryCompilerTestCase
-  extends PhutilTestCase {
-
-  public function testCompileQueries() {
-    $tests = array(
-      '' => null,
-      'cat dog' => '+"cat" +"dog"',
-      'cat -dog' => '+"cat" -"dog"',
-      'cat-dog' => '+"cat-dog"',
-
-      // If there are spaces after an operator, the operator applies to the
-      // next search term.
-      'cat - dog' => '+"cat" -"dog"',
-
-      // Double quotes serve as delimiters even if there is no whitespace
-      // between terms.
-      '"cat"dog' => '+"cat" +"dog"',
-
-      // This query is too long.
-      str_repeat('x', 2048) => false,
-
-      // Multiple operators are not permitted.
-      '++cat' => false,
-      '+-cat' => false,
-      '--cat' => false,
-
-      // Stray operators are not permitted.
-      '+' => false,
-      'cat +' => false,
-
-      // Double quotes must be paired.
-      '"' => false,
-      'cat "' => false,
-      '"cat' => false,
-      'A"' => false,
-      'A"B"' => '+"A" +"B"',
-    );
-
-    $this->assertCompileQueries($tests);
-
-    // Test that we compile queries correctly if the operators have been
-    // swapped to use "AND" by default.
-    $operator_tests = array(
-      'cat dog' => '"cat" "dog"',
-      'cat -dog' => '"cat" -"dog"',
-    );
-    $this->assertCompileQueries($operator_tests, ' |-><()~*:""&\'');
-
-
-    // Test that we compile queries correctly if the quote operators have
-    // been swapped to differ.
-    $quote_tests = array(
-      'cat dog' => '+[cat] +[dog]',
-      'cat -dog' => '+[cat] -[dog]',
-    );
-    $this->assertCompileQueries($quote_tests, '+ -><()~*:[]&|');
-
-  }
-
-  public function testCompileQueriesWithStemming() {
-    $stemming_tests = array(
-      'cat dog' => array(
-        null,
-        '+"cat" +"dog"',
-      ),
-      'cats dogs' => array(
-        null,
-        '+"cat" +"dog"',
-      ),
-      'cats "dogs"' => array(
-        '+"dogs"',
-        '+"cat"',
-      ),
-      '"blessed blade" of the windseeker' => array(
-        '+"blessed blade"',
-        '+"of" +"the" +"windseek"',
-      ),
-      'mailing users for mentions on tasks' => array(
-        null,
-        '+"mail" +"user" +"for" +"mention" +"on" +"task"',
-      ),
-    );
-
-    $stemmer = new PhutilSearchStemmer();
-    $this->assertCompileQueries($stemming_tests, null, $stemmer);
-  }
-
-  public function testCompileQueriesWithFunctions() {
-    $op_and = PhutilSearchQueryCompiler::OPERATOR_AND;
-    $op_sub = PhutilSearchQueryCompiler::OPERATOR_SUBSTRING;
-    $op_exact = PhutilSearchQueryCompiler::OPERATOR_EXACT;
-
-    $mao = "\xE7\x8C\xAB";
-
-    $function_tests = array(
-      'cat' => array(
-        array(null, $op_and, 'cat'),
-      ),
-      ':cat' => array(
-        array(null, $op_and, 'cat'),
-      ),
-      'title:cat' => array(
-        array('title', $op_and, 'cat'),
-      ),
-      'title:cat:dog' => array(
-        array('title', $op_and, 'cat:dog'),
-      ),
-      'title:~cat' => array(
-        array('title', $op_sub, 'cat'),
-      ),
-      'cat title:="Meow Meow"' => array(
-        array(null, $op_and, 'cat'),
-        array('title', $op_exact, 'Meow Meow'),
-      ),
-      'title:cat title:dog' => array(
-        array('title', $op_and, 'cat'),
-        array('title', $op_and, 'dog'),
-      ),
-      '~"core and seven years ag"' => array(
-        array(null, $op_sub, 'core and seven years ag'),
-      ),
-      $mao => array(
-        array(null, $op_sub, $mao),
-      ),
-      '+'.$mao => array(
-        array(null, $op_and, $mao),
-      ),
-      '~'.$mao => array(
-        array(null, $op_sub, $mao),
-      ),
-      '"'.$mao.'"' => array(
-        array(null, $op_and, $mao),
-      ),
-    );
-
-    $this->assertCompileFunctionQueries($function_tests);
-  }
-
-  private function assertCompileQueries(
-    array $tests,
-    $operators = null,
-    PhutilSearchStemmer $stemmer = null) {
-    foreach ($tests as $input => $expect) {
-      $caught = null;
-
-      $query = null;
-      $literal_query = null;
-      $stemmed_query = null;
-
-      try {
-        $compiler = new PhutilSearchQueryCompiler();
-
-        if ($operators !== null) {
-          $compiler->setOperators($operators);
-        }
-
-        if ($stemmer !== null) {
-          $compiler->setStemmer($stemmer);
-        }
-
-        $tokens = $compiler->newTokens($input);
-
-        if ($stemmer) {
-          $literal_query = $compiler->compileLiteralQuery($tokens);
-          $stemmed_query = $compiler->compileStemmedQuery($tokens);
-        } else {
-          $query = $compiler->compileQuery($tokens);
-        }
-      } catch (PhutilSearchQueryCompilerSyntaxException $ex) {
-        $caught = $ex;
-      }
-
-      if ($caught !== null) {
-        $query = false;
-        $literal_query = false;
-        $stemmed_query = false;
-      }
-
-      if (!$stemmer) {
-        $this->assertEqual(
-          $expect,
-          $query,
-          pht('Compilation of query: %s', $input));
-      } else {
-        $this->assertEqual(
-          $expect,
-          ($literal_query === false)
-            ? false
-            : array($literal_query, $stemmed_query),
-          pht('Stemmed compilation of query: %s', $input));
-      }
-    }
-  }
-
-  private function assertCompileFunctionQueries(array $tests) {
-    foreach ($tests as $input => $expect) {
-      $compiler = id(new PhutilSearchQueryCompiler())
-        ->setEnableFunctions(true);
-
-      $tokens = $compiler->newTokens($input);
-
-      $result = array();
-      foreach ($tokens as $token) {
-        $result[] = array(
-          $token->getFunction(),
-          $token->getOperator(),
-          $token->getValue(),
-        );
-      }
-
-      $this->assertEqual(
-        $expect,
-        $result,
-        pht('Function compilation of query: %s', $input));
-    }
-  }
-
-}
diff --git a/src/search/__tests__/PhutilSearchStemmerTestCase.php b/src/search/__tests__/PhutilSearchStemmerTestCase.php
deleted file mode 100644
--- a/src/search/__tests__/PhutilSearchStemmerTestCase.php
+++ /dev/null
@@ -1,85 +0,0 @@
-<?php
-
-final class PhutilSearchStemmerTestCase
-  extends PhutilTestCase {
-
-  public function testStemTokens() {
-    $tests = array(
-      // Various real-world cases collected from users before we implemented
-      // stemming.
-      'tokens' => 'token',
-      'panels' => 'panel',
-
-      'renames' => 'renam',
-      'rename' => 'renam',
-
-      'components' => 'compon',
-      'component' => 'compon',
-
-      'implementation' => 'implement',
-      'implements' => 'implement',
-      'implementing' => 'implement',
-      'implementer' => 'implement',
-
-      'deleting' => 'delet',
-      'deletion' => 'delet',
-      'delete' => 'delet',
-
-      'erratically' => 'errat',
-      'erratic' => 'errat',
-
-      // Stems should be normalized.
-      'DOG' => 'dog',
-
-      // If stemming would bring a token under 3 characters, it should not
-      // be stemmed.
-      'dns' => 'dns',
-      'nis' => 'nis',
-
-      // Complex tokens with internal punctuation should be left untouched;
-      // these are usually things like domain names, API calls, informal tags,
-      // etc.
-      'apples' => 'appl',
-      'bananas' => 'banana',
-      'apples_bananas' => 'apples_bananas',
-      'apples_bananas.apples_bananas' => 'apples_bananas.apples_bananas',
-    );
-
-    $stemmer = new PhutilSearchStemmer();
-    foreach ($tests as $input => $expect) {
-      $stem = $stemmer->stemToken($input);
-      $this->assertEqual(
-        $expect,
-        $stem,
-        pht('Token stem of "%s".', $input));
-    }
-  }
-
-  public function testStemDocuments() {
-    $tests = array(
-      'The wild boar meandered erratically.' =>
-        'the wild boar meander errat',
-      'Fool me onc, shame on you. Fool me twice, shame on me.' =>
-        'fool onc shame you twice',
-      'Fireball is a seventh-level spell which deals 2d16 points of damage '.
-      'in a 1-meter radius around a target.' =>
-        'firebal seventh level spell which deal 2d16 point damag meter '.
-        'radiu around target',
-      'apples-bananas' => 'appl banana',
-      'apples_bananas' => 'apples_bananas',
-      'apples.bananas' => 'apples.bananas',
-      'oddly-proportioned' => 'oddli proport',
-    );
-
-    $stemmer = new PhutilSearchStemmer();
-    foreach ($tests as $input => $expect) {
-      $stem = $stemmer->stemCorpus($input);
-      $this->assertEqual(
-        $expect,
-        $stem,
-        pht('Corpus stem of: %s', $input));
-    }
-  }
-
-
-}