*** complete.el	Tue Jan 23 07:40:00 2007
--- complete.el	Sat Feb 24 20:46:14 2007
***************
*** 383,388 ****
--- 383,393 ----
      (let ((completion-ignore-case nil))
        (test-completion str table pred))))

+ (defun try-completion-old (string alist &optional predicate)
+   "Like `try-completion' but return empty string instead of t."
+   (let ((result (try-completion string alist predicate)))
+     (if (eq result t) "" result)))
+ 
  (defun PC-do-completion (&optional mode beg end)
    (or beg (setq beg (minibuffer-prompt-end)))
    (or end (setq end (point-max)))
***************
*** 390,396 ****
  	 (pred minibuffer-completion-predicate)
  	 (filename (funcall PC-completion-as-file-name-predicate))
  	 (dirname nil)		; non-nil only if a filename is being completed
! 	 (dirlength 0)
  	 (str (buffer-substring beg end))
  	 (incname (and filename (string-match "<\\([^\"<>]*\\)>?$" str)))
  	 (ambig nil)
--- 395,401 ----
  	 (pred minibuffer-completion-predicate)
  	 (filename (funcall PC-completion-as-file-name-predicate))
  	 (dirname nil)		; non-nil only if a filename is being completed
! 	 dirlength
  	 (str (buffer-substring beg end))
  	 (incname (and filename (string-match "<\\([^\"<>]*\\)>?$" str)))
  	 (ambig nil)
***************
*** 623,630 ****

  	    ;; Check if next few letters are the same in all cases
  	    (if (and (not (eq mode 'help))
! 		     (setq prefix (try-completion (PC-chunk-after basestr skip)
!                                                   poss)))
  		(let ((first t) i)
  		  ;; Retain capitalization of user input even if
  		  ;; completion-ignore-case is set.
--- 628,635 ----

  	    ;; Check if next few letters are the same in all cases
  	    (if (and (not (eq mode 'help))
! 		     (setq prefix (try-completion-old
! 				   (PC-chunk-after basestr skip) poss)))
  		(let ((first t) i)
  		  ;; Retain capitalization of user input even if
  		  ;; completion-ignore-case is set.
***************
*** 662,668 ****
  			      (setq skip (concat skip
  						 (regexp-quote prefix)
  						 PC-ndelims-regex)
! 				    prefix (try-completion
  					    (PC-chunk-after
  					     ;; not basestr, because that does
  					     ;; not reflect insertions
--- 667,673 ----
  			      (setq skip (concat skip
  						 (regexp-quote prefix)
  						 PC-ndelims-regex)
! 				    prefix (try-completion-old
  					    (PC-chunk-after
  					     ;; not basestr, because that does
  					     ;; not reflect insertions
***************
*** 996,1002 ****
                (cond
                 ((not completion-table) nil)
                 ((eq action 'lambda) (test-completion str2 completion-table nil))
!                ((eq action nil) (try-completion str2 completion-table nil))
                 ((eq action t) (all-completions str2 completion-table nil)))))
      ad-do-it))
  
--- 1001,1007 ----
                (cond
                 ((not completion-table) nil)
                 ((eq action 'lambda) (test-completion str2 completion-table nil))
!                ((eq action nil) (try-completion-old str2 completion-table nil))
                 ((eq action t) (all-completions str2 completion-table nil)))))
      ad-do-it))