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
@@ -408,6 +408,7 @@
     'phutil_get_library_root' => 'moduleutils/moduleutils.php',
     'phutil_get_library_root_for_path' => 'moduleutils/moduleutils.php',
     'phutil_get_signal_name' => 'future/exec/execx.php',
+    'phutil_glob_to_regex' => 'utils/utils.php',
     'phutil_implode_html' => 'markup/render.php',
     'phutil_is_hiphop_runtime' => 'utils/utils.php',
     'phutil_is_utf8' => 'utils/utf8.php',
diff --git a/src/utils/__tests__/PhutilUtilsTestCase.php b/src/utils/__tests__/PhutilUtilsTestCase.php
--- a/src/utils/__tests__/PhutilUtilsTestCase.php
+++ b/src/utils/__tests__/PhutilUtilsTestCase.php
@@ -616,4 +616,72 @@
       phutil_var_export(new PhutilTestPhobject()));
   }
 
+  public function testGlobToRegex() {
+    $cases = array(
+      '' => array(
+        array(''),
+        array('f', '/'),
+      ),
+      '*' => array(
+        array('foo'),
+        array('foo/', '/foo'),
+      ),
+      '**' => array(
+        array('foo', 'foo/', '/foo', 'foo/bar/baz'),
+        array(),
+      ),
+      'foo.*' => array(
+        array('foo.php', 'foo.a', 'foo.'),
+        array('fooo.php', 'foo.php/foo'),
+      ),
+      'fo?' => array(
+        array('foo', 'fot'),
+        array('fooo', 'ffoo', 'fo/'),
+      ),
+      'fo{o,t}' => array(
+        array('foo', 'fot'),
+        array('fob', 'fo/'),
+      ),
+      'foo(bar|foo)' => array(
+        array('foo(bar|foo)'),
+        array('foobar', 'foofoo'),
+      ),
+      'foo,bar' => array(
+        array('foo,bar'),
+        array('foo', 'bar'),
+      ),
+      'fo{o,\\,}' => array(
+        array('foo', 'fo,'),
+        array(),
+      ),
+      'fo{o,\\\\}' => array(
+        array('foo', 'fo\\'),
+        array(),
+      ),
+      '/foo' => array(
+        array('/foo'),
+        array('foo'),
+      ),
+    );
+
+    foreach ($cases as $input => $expect) {
+      list($matches, $no_matches) = $expect;
+
+      $regex = phutil_glob_to_regex($input);
+      PhutilTypeSpec::newFromString('regex')->check($regex);
+
+      foreach ($matches as $match) {
+        $this->assertTrue(
+          (bool)preg_match($regex, $match),
+          pht('Expecting "%s" to match "%s".', $regex, $match));
+      }
+
+      foreach ($no_matches as $no_match) {
+        $this->assertFalse(
+          (bool)preg_match($regex, $no_match),
+          pht('Expecting "%s" not to match "%s".', $regex, $no_match));
+      }
+    }
+  }
+
 }
diff --git a/src/utils/utils.php b/src/utils/utils.php
--- a/src/utils/utils.php
+++ b/src/utils/utils.php
@@ -1121,3 +1121,66 @@
   // Let PHP handle everything else.
   return var_export($var, true);
 }
+
+
+/**
+ * Returns a regular expression which is equivalent to the given glob pattern.
+ *
+ * This function was adapted from
+ * https://github.com/symfony/Finder/blob/master/Glob.php.
+ *
+ * @param  string  A glob pattern.
+ * @return regex
+ */
+function phutil_glob_to_regex($glob) {
+  $escaping = false;
+  $in_curlies = 0;
+  $regex = '';
+
+  for ($i = 0; $i < strlen($glob); $i++) {
+    $char = $glob[$i];
+    $next_char = ($i < strlen($glob) - 1) ? $glob[$i + 1] : null;
+
+    if (in_array($char, array('.', '(', ')', '|', '+', '^', '$'))) {
+      $regex .= "\\$char";
+    } else if ($char === '*') {
+      if ($escaping) {
+        $regex .= '\\*';
+      } else {
+        if ($next_char === '*') {
+          $regex .= '.*';
+        } else {
+          $regex .= '[^/]*';
+        }
+      }
+    } else if ($char === '?') {
+      $regex .= $escaping ? '\\?' : '[^/]';
+    } else if ($char === '{') {
+      $regex .= $escaping ? '\\{' : '(';
+      if (!$escaping) {
+        ++$in_curlies;
+      }
+    } else if ($char === '}' && $in_curlies) {
+      $regex .= $escaping ? '}' : ')';
+      if (!$escaping) {
+        --$in_curlies;
+      }
+    } else if ($char === ',' && $in_curlies) {
+      $regex .= $escaping ? ',' : '|';
+    } else if ($char === '\\') {
+      if ($escaping) {
+        $regex .= '\\\\';
+        $escaping = false;
+      } else {
+        $escaping = true;
+      }
+
+      continue;
+    } else {
+      $regex .= $char;
+    }
+    $escaping = false;
+  }
+
+  return '#^'.$regex.'$#';
+}