Scripts added using drupal_add_js() are never added to the page after an AJAX callback

#2: exactly, this is jQuery <=1.9 being extremely retarded counterintuitive (yes, I've lost many hours because of this extremely weird behavior).

This also causes CKEditor to break when it's lazy loaded, and it's why the patch at #1894644: Unidirectional editor configuration -> filter settings syncing needs to do this:

+/**
+ * Implements hook_form_FORM_ID_alter().
+ */
+function ckeditor_form_filter_admin_format_form_alter(&$form, &$form_state) {
+  // @todo D8 remove this when we upgrade to jQuery >=1.9: jQuery <1.9 breaks
+  // CKEditor when CKEditor is dynamically loaded, because jQuery <1.9 hides
+  // <script> tags.
+  // This cannot live in ckeditor.module, because it must already exist
+  // *before* ckeditor.js is dynamically loaded, and AjaxResponse does not yet
+  // support inline CSS/JS, so moving this into the 'ckeditor' library also
+  // does not work.
+  // @see http://bugs.jquery.com/ticket/11795#comment:20
+  $form['editor']['editor']['#attached']['js'][] = array(
+    'type' => 'inline',
+    'scope' => 'header',
+    'data' => 'window.CKEDITOR_BASEPATH="' . url('core/misc/ckeditor/', array('absolute' => TRUE)) . '";',
+  );
+}

I.e. relevant jQuery ticket: http://bugs.jquery.com/ticket/11795#comment:20

np :)

Alright, so I'm sorry to be posting in this old closed issue, but several different pathways through other issue queues keep routing me back to this one. I'm doubtful I have a topic for a new issue, and I may just need some simple clarification on the points above...

As best I can tell, scripts added using drupal_add_js(), or #attached['js'](which of course just uses the former), are still not always added to the page after an AJAX callback, regardless of the jQuery version (I've tried 1.4, 1.5, 1.7, 1.10).

I'm suspect that the previous issues that have addressed this are making other assumptions that I'm just totally missing. Is is possible that things only work for elements that are explicitly declared as part of the FAPI and use the appropriate jQuery version? One of my cases involves a custom display formatter that adds some dynamically calculated inline js via #attached (i.e., it's not tied to a formal form element). That js is still never added to the DOM when the formatter is used to (re)render content as part of an AJAX response. Again, updating jQuery does not seem to have any effect.

Is there an assumption I'm missing about the baseline cases where drupal_add_js() is actually supported in an AJAX response?

Re. #7, never mind. I think I've reversed-engineered enough of the history of this issue to see that there are indeed some important assumptions required for drupal_add_js() to work inside AJAX. I've decided to post notes in the previous/main issue about this instead, as it seems more appropriate there for ongoing refernce - #561858: [Tests added] Fix drupal_add_js() and drupal_add_css() to work for AJAX requests too by adding lazy-load to AJAX framework