X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/0d9f702fd085bc8ad560a3e1f08d5e93054a5d33..7095596ac3ece75b7fb98be7a47e4715a54842c2:/lisp/pcmpl-linux.el

diff --git a/lisp/pcmpl-linux.el b/lisp/pcmpl-linux.el
index 85731a83a8..3cb38b95c7 100644
--- a/lisp/pcmpl-linux.el
+++ b/lisp/pcmpl-linux.el
@@ -1,7 +1,6 @@
 ;;; pcmpl-linux.el --- functions for dealing with GNU/Linux completions
 
-;; Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004,
-;;   2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
+;; Copyright (C) 1999-2016 Free Software Foundation, Inc.
 
 ;; Package: pcomplete
 
@@ -32,9 +31,10 @@
 
 (require 'pcomplete)
 
-(defgroup pcmpl-linux nil
-  "Functions for dealing with GNU/Linux completions."
-  :group 'pcomplete)
+;; Unused.
+;;; (defgroup pcmpl-linux nil
+;;;   "Functions for dealing with GNU/Linux completions."
+;;;   :group 'pcomplete)
 
 ;; Functions:
 
@@ -84,6 +84,19 @@
 	  (forward-line)))
       (pcomplete-uniqify-list points))))
 
+(defun pcomplete-pare-list (l r)
+  "Destructively remove from list L all elements matching any in list R.
+Test is done using `equal'."
+  (while (and l (and r (member (car l) r)))
+    (setq l (cdr l)))
+  (let ((m l))
+    (while m
+      (while (and (cdr m)
+		  (and r (member (cadr m) r)))
+	(setcdr m (cddr m)))
+      (setq m (cdr m))))
+  l)
+
 (defun pcmpl-linux-mountable-directories ()
   "Return a list of mountable directory names."
   (let (points)