important fix and a cool extension

extensions/pu-ext-dired-ibuffer.el

@@ -0,0 +1,37 @@
+(require 'purpose)
+
+(defvar pu-ext--window-layout
+  '(nil (0 0 152 35)
+	(:purpose edit :purpose-dedicated t :width 0.7466666666666667 :height 0.9722222222222222 :edges (0.0 0.0 0.7733333333333333 0.9722222222222222))
+	(t (116 0 152 35) (:purpose dired :purpose-dedicated t :width 0.21333333333333335 :height 0.5 :edges (0.7733333333333333 0.0 1.0133333333333334 0.5)) (:purpose ibuffer :purpose-dedicated t :width 0.22 :height 0.4722222222222222 :edges (0.7733333333333333 0.5 1.0133333333333334 0.9722222222222222)))))
+
+(defun pu-ext--setup-ibuffer ()
+  (purpose-set-mode-purpose 'ibuffer-mode 'ibuffer)
+  (add-hook 'ibuffer-mode-hook
+	    #'(lambda ()
+		(ibuffer-filter-by-filename ".")))
+  (add-hook 'ibuffer-mode-hook #'ibuffer-auto-mode)
+  (setq ibuffer-formats '((mark " " name)))
+  (setq ibuffer-display-summary nil)
+  (setq ibuffer-use-header-line nil)
+  ;; not sure if we want this...
+  ;; (setq ibuffer-default-shrink-to-minimum-size t)
+  (ibuffer-list-buffers))
+
+(defun pu-ext-update-dired ()
+  (when (and (buffer-file-name)
+	     (cl-delete-if #'window-dedicated-p (purpose-windows-with-purpose 'dired)))
+    (save-selected-window
+      (dired (file-name-directory (buffer-file-name))))))
+
+(defun pu-ext--setup-dired ()
+  (add-hook 'dired-mode-hook #'dired-hide-details-mode)
+  (add-hook 'purpose-select-buffer-hook #'pu-ext-update-dired))
+
+(defun pu-ext-setup ()
+  (interactive)
+  (pu-ext--setup-ibuffer)
+  (pu-ext--setup-dired)
+  (purpose-set-window-layout pu-ext--window-layout))
+
+(provide 'pu-ext-dired-ibuffer)

purpose-switch.el

@@ -79,14 +79,16 @@ it yourself.")
 (defun purpose-alist-set (key value alist)
   "Set VALUE to be the value associated to KEY in ALIST.
 This doesn't change the original alist, but returns a modified copy."
-  (setf (alist-get key alist) value))
+  (setf (alist-get key alist) value)
+  alist)
 
 (defun purpose-alist-del (key alist)
   "Delete KEY from ALIST.
 This doesn't change the original alist, but returns a modified copy."
   ;; we could use any value instead of 0, as long as we used it instead
   ;; of 0 in both places
-  (setf (alist-get key alist 0 t) 0))
+  (setf (alist-get key alist 0 t) 0)
+  alist)
 
 (defun purpose-alist-combine (&rest alists)
   ;; (purpose-flatten alists)
@@ -443,7 +445,7 @@ This function runs hook `purpose-select-buffer-hook' when its done."
       (unless (eq new-frame old-frame)
 	(select-frame-set-input-focus new-frame norecord))
       (select-window new-window norecord))
-    (run-hooks purpose-select-buffer-hook)
+    (run-hooks 'purpose-select-buffer-hook)
     buffer))
 
 
@@ -457,6 +459,7 @@ currently selected window is not available."
   ;; `display-buffer' should call `purpose--action-function', and
   ;; `purpose--action-function' should try to switch buffer in current window,
   ;; and if that's impossible - display buffer in another window.
+  (message "xxxx")
   (purpose-select-buffer buffer-or-name
 			 (if force-same-window
 			     'force-same-window

purpose.el

@@ -2,7 +2,7 @@
 
 ;; Author: Bar Magal (2015)
 ;; Package: purpose
-;; Version: 1.1
+;; Version: 1.1.1
 ;; Keywords: frames
 ;; Homepage: https://github.com/bmag/emacs-purpose
 ;; Package-Requires: ((emacs "24.4") (let-alist "1.0.3"))
@@ -87,7 +87,7 @@
 (require 'purpose-switch)
 (require 'purpose-prefix-overload)
 
-(defconst purpose-version "1.1"
+(defconst purpose-version "1.1.1"
   "Purpose's version.")