Re: For after-the-release: enhanced partial completion

["Sean O'Rourke" <sorourke@cs.ucsd.edu>]

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Leo <sdl.web@gmail.com> writes:
> Reproduce:
>    1.  emacs -Q
>    2.  M-x partial-completion-mode
>    3.  M-: and then type in minibuffer `(emacs)'
>    4.  Move the cursor to be on ")" and hit "M-TAB"

Thanks.  Please try this version instead.

/s


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Index: complete.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/complete.el,v
retrieving revision 1.72
diff -p -u -w -r1.72 complete.el
--- complete.el	14 Apr 2007 20:23:31 -0000	1.72
+++ complete.el	5 Jun 2007 14:54:14 -0000
@@ -454,6 +454,7 @@ GOTO-END is non-nil, however, it instead
 	 env-on
 	 regex
 	 p offset
+         abbreviated
 	 (poss nil)
 	 helpposs
 	 (case-fold-search completion-ignore-case))
@@ -590,17 +591,23 @@ GOTO-END is non-nil, however, it instead
                  pred nil))
 
       ;; Find an initial list of possible completions
-      (if (not (setq p (string-match (concat PC-delim-regex
+        (unless (setq p (string-match (concat PC-delim-regex
 					     (if filename "\\|\\*" ""))
 				     str
-				     (+ (length dirname) offset))))
+                                      (+ (length dirname) offset)))
 
 	  ;; Minibuffer contains no hyphens -- simple case!
-	  (setq poss (all-completions (if env-on
-					  basestr str)
+          (setq poss (all-completions (if env-on basestr str)
 				      table
 				      pred))
-
+          (unless (or filename poss)
+            ;; Try completion as an abbreviation, e.g. "mvb" -> "m-v-b"
+            ;; -> "multiple-value-bind"
+            (setq regex (concat "\\`" (mapconcat #'list str "[^-]*-"))
+                  origstr str
+                  p 1
+                  abbreviated t)))
+        (when p
 	;; Use all-completions to do an initial cull.  This is a big win,
 	;; since all-completions is written in C!
 	(let ((compl (all-completions (if env-on
@@ -609,12 +616,17 @@ GOTO-END is non-nil, however, it instead
                                       table
                                       pred)))
 	  (setq p compl)
+            (when (and compl abbreviated)
+              (setq basestr (mapconcat 'list str "-"))
+              (delete-region beg end)
+              (setq end (+ beg (length basestr)))
+              (insert basestr)))
 	  (while p
 	    (and (string-match regex (car p))
 		 (progn
 		   (set-text-properties 0 (length (car p)) '() (car p))
 		   (setq poss (cons (car p) poss))))
-	    (setq p (cdr p)))))
+            (setq p (cdr p))))
 
       ;; If table had duplicates, they can be here.
       (delete-dups poss)
@@ -648,6 +660,7 @@ GOTO-END is non-nil, however, it instead
              (and p (setq poss p))))
 
       ;; Now we have a list of possible completions
+
       (cond
 
        ;; No valid completions found
@@ -657,6 +670,9 @@ GOTO-END is non-nil, however, it instead
 	    (let ((PC-word-failed-flag t))
 	      (delete-backward-char 1)
 	      (PC-do-completion 'word))
+               (when abbreviated
+                 (delete-region beg end)
+                 (insert origstr))
 	  (beep)
 	  (PC-temp-minibuffer-message (if ambig
 					  " [Ambiguous dir name]"
@@ -857,13 +873,11 @@ only symbols with function definitions a
 Otherwise, all symbols with function definitions, values
 or properties are considered."
   (interactive)
-  (let* ((end (point))
-         ;; To complete the word under point, rather than just the portion
-         ;; before point, use this:
-;;;           (save-excursion
-;;;             (with-syntax-table lisp-mode-syntax-table
-;;;               (forward-sexp 1)
-;;;               (point))))
+  (let* ((end
+          (save-excursion
+            (with-syntax-table lisp-mode-syntax-table
+              (skip-syntax-forward "_w")
+              (point))))
 	 (beg (save-excursion
                 (with-syntax-table lisp-mode-syntax-table
                   (backward-sexp 1)

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