Get rid of the 2nd argument of include_stylesheet()

.. make the optional behavior default now.

plugins/acl/acl.php

@@ -177,7 +177,7 @@ class acl extends rcube_plugin
         $this->rc->output->add_label('save', 'cancel');
         $this->include_script('acl.js');
         $this->rc->output->include_script('list.js');
-        $this->include_stylesheet($this->local_skin_path() . '/acl.css', true);
+        $this->include_stylesheet($this->local_skin_path() . '/acl.css');
 
         // add Info fieldset if it doesn't exist
         if (!isset($args['form']['props']['fieldsets']['info']))

plugins/archive/archive.php

@@ -25,7 +25,7 @@ class archive extends rcube_plugin
         $archive_folder = $rcmail->config->get('archive_mbox');
 
         if ($rcmail->task == 'mail' && ($rcmail->action == '' || $rcmail->action == 'show') && $archive_folder) {
-            $this->include_stylesheet($this->local_skin_path() . '/archive.css', true);
+            $this->include_stylesheet($this->local_skin_path() . '/archive.css');
             $this->include_script('archive.js');
             $this->add_texts('localization', true);
             $this->add_button(
@@ -59,7 +59,7 @@ class archive extends rcube_plugin
             $this->add_hook('preferences_save', array($this, 'save_prefs'));
 
             if ($rcmail->action == 'folders' && $archive_folder) {
-                $this->include_stylesheet($this->local_skin_path() . '/archive.css', true);
+                $this->include_stylesheet($this->local_skin_path() . '/archive.css');
                 $this->include_script('archive.js');
                 // set env variables for client
                 $rcmail->output->set_env('archive_folder', $archive_folder);

plugins/enigma/lib/enigma_ui.php

@@ -125,7 +125,7 @@ class enigma_ui
         }
 
         $skin_path = $this->enigma->local_skin_path();
-        $this->enigma->include_stylesheet("$skin_path/enigma.css", true);
+        $this->enigma->include_stylesheet("$skin_path/enigma.css");
         $this->css_loaded = true;
     }
 

plugins/help/help.php

@@ -55,7 +55,7 @@ class help extends rcube_plugin
         }
 
         // add style for taskbar button (must be here) and Help UI
-        $this->include_stylesheet($this->local_skin_path() . '/help.css', true);
+        $this->include_stylesheet($this->local_skin_path() . '/help.css');
     }
 
     function action()

plugins/hide_blockquote/hide_blockquote.php

@@ -26,7 +26,7 @@ class hide_blockquote extends rcube_plugin
             && ($limit = $rcmail->config->get('hide_blockquote_limit'))
         ) {
             // include styles
-            $this->include_stylesheet($this->local_skin_path() . "/style.css", true);
+            $this->include_stylesheet($this->local_skin_path() . "/style.css");
 
             // Script and localization
             $this->include_script('hide_blockquote.js');

plugins/managesieve/managesieve.php

@@ -85,10 +85,10 @@ class managesieve extends rcube_plugin
         // include styles
         $skin_path = $this->local_skin_path();
         if ($sieve_action || ($this->rc->task == 'settings' && empty($_REQUEST['_framed']))) {
-            $this->include_stylesheet("$skin_path/managesieve.css", true);
+            $this->include_stylesheet("$skin_path/managesieve.css");
         }
         else if ($this->rc->task == 'mail') {
-            $this->include_stylesheet("$skin_path/managesieve_mail.css", true);
+            $this->include_stylesheet("$skin_path/managesieve_mail.css");
         }
 
         $this->ui_initialized = true;

plugins/markasjunk/markasjunk.php

@@ -23,7 +23,7 @@ class markasjunk extends rcube_plugin
         if ($rcmail->action == '' || $rcmail->action == 'show') {
             $this->add_texts('localization', true);
             $this->include_script('markasjunk.js');
-            $this->include_stylesheet($this->local_skin_path() . '/markasjunk.css', true);
+            $this->include_stylesheet($this->local_skin_path() . '/markasjunk.css');
 
             $this->add_button(array(
                     'type'       => 'link',

plugins/vcard_attachments/vcard_attachments.php

@@ -32,7 +32,7 @@ class vcard_attachments extends rcube_plugin
             $btn_class = strpos($skin_path, 'classic') ? 'button' : 'listbutton';
 
             $this->add_texts('localization', true);
-            $this->include_stylesheet($skin_path . '/style.css', true);
+            $this->include_stylesheet($skin_path . '/style.css');
             $this->include_script('vcardattach.js');
             $this->add_button(
                 array(
@@ -48,7 +48,7 @@ class vcard_attachments extends rcube_plugin
         }
         else if (!$rcmail->output->framed && (!$rcmail->action || $rcmail->action == 'list')) {
             $skin_path = $this->local_skin_path();
-            $this->include_stylesheet($skin_path . '/style.css', true);
+            $this->include_stylesheet($skin_path . '/style.css');
             $this->include_script('vcardattach.js');
         }
 
@@ -123,7 +123,7 @@ class vcard_attachments extends rcube_plugin
 
         if ($attach_script) {
             $this->include_script('vcardattach.js');
-            $this->include_stylesheet($this->local_skin_path() . '/style.css', true);
+            $this->include_stylesheet($this->local_skin_path() . '/style.css');
         }
 
         return $p;

plugins/zipdownload/zipdownload.php

@@ -86,7 +86,7 @@ class zipdownload extends rcube_plugin
                     break;
             }
 
-            $this->include_stylesheet($this->local_skin_path() . '/zipdownload.css', true);
+            $this->include_stylesheet($this->local_skin_path() . '/zipdownload.css');
         }
 
         return $p;

program/lib/Roundcube/rcube_plugin.php

@@ -354,10 +354,9 @@ abstract class rcube_plugin
     /**
      * Make this stylesheet available on the client
      *
-     * @param string $fn        File path; absolute or relative to the plugin directory
-     * @param bool   $if_exists Include the file only if exists
+     * @param string $fn File path; absolute or relative to the plugin directory
      */
-    public function include_stylesheet($fn, $if_exists = false)
+    public function include_stylesheet($fn)
     {
         $this->api->include_stylesheet($this->resource_url($fn), $if_exists);
     }

program/lib/Roundcube/rcube_plugin_api.php

@@ -604,13 +604,12 @@ class rcube_plugin_api
     /**
      * Include a plugin stylesheet in the current HTML page
      *
-     * @param string $fn        Path to stylesheet
-     * @param bool   $if_exists Include stylesheet only if the file exists
+     * @param string $fn Path to stylesheet
      */
-    public function include_stylesheet($fn, $if_exists = false)
+    public function include_stylesheet($fn)
     {
         if (is_object($this->output) && $this->output->type == 'html') {
-            if ($if_exists && $fn[0] != '/' && !preg_match('|^https?://|i', $fn)) {
+            if ($fn[0] != '/' && !preg_match('|^https?://|i', $fn)) {
                 $rcube      = rcube::get_instance();
                 $devel_mode = $rcube->config->get('devel_mode');
                 $assets_dir = $rcube->config->get('assets_dir');