Index: mimedetect.admin.inc
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/mimedetect/mimedetect.admin.inc,v
retrieving revision 1.1
diff -u -p -r1.1 mimedetect.admin.inc
--- mimedetect.admin.inc	15 Apr 2009 19:35:40 -0000	1.1
+++ mimedetect.admin.inc	15 Apr 2009 19:57:46 -0000
@@ -2,19 +2,34 @@
 
 function mimedetect_settings() {
   $form = array();
-  $form['mimedetect_enable_file_binary'] = array(
-    '#type' => 'checkbox',
-    '#title' => t("Use UNIX 'file' command to detect mime type?"),
-    '#description' => t("The UNIX 'file' command will be used for mime detection only if the PHP Fileinfo extension is not installed or fails to load."),
-    '#default_value' => variable_get('mimedetect_enable_file_binary', FALSE),
-  );
-  $form['mimedetect_file_binary'] = array(
-    '#type' => 'textfield',
-    '#title' => t("Path to the 'file' command"),
-    '#description' => t("The path to the executable 'file' binary."),
-    '#default_value' => variable_get('mimedetect_file_binary','/usr/bin/file'),
-  );
-  return system_settings_form($form);
+
+  // Check if fileinfo is available so we don't present the file options if
+  // they can't use them
+  if (extension_loaded('fileinfo')) {
+    $form['file'] = array(
+      '#value' => t("The MimeDetect module is using PHP's fileinfo extension to detect MIME types. There are no settings for the extension.")
+    );
+  }
+  else {
+    $form['file'] = array(
+      '#type' => 'fieldset',
+      '#title' => t("UNIX 'file' command"),
+    );
+    $form['file']['mimedetect_enable_file_binary'] = array(
+      '#type' => 'checkbox',
+      '#title' => t("Use UNIX 'file' command to detect mime type?"),
+      '#description' => t("The UNIX 'file' command will be used for mime detection only if the PHP Fileinfo extension is not installed or fails to load."),
+      '#default_value' => variable_get('mimedetect_enable_file_binary', FALSE),
+    );
+    $form['file']['mimedetect_file_binary'] = array(
+      '#type' => 'textfield',
+      '#title' => t("Path to the 'file' command"),
+      '#description' => t("The path to the executable 'file' binary."),
+      '#default_value' => variable_get('mimedetect_file_binary','/usr/bin/file'),
+    );
+    $form = system_settings_form($form);
+  }
+  return $form;
 }
 
 function mimedetect_settings_validate($form_id, &$form_state) {