[Emacs-diffs] Changes to emacs/lisp/complete.el,v

[Richard M. Stallman]

CVSROOT:        /cvsroot/emacs
Module name:    emacs
Changes by:     Richard M. Stallman <rms>       07/08/07 03:02:04

Index: complete.el
===================================================================
RCS file: /cvsroot/emacs/emacs/lisp/complete.el,v
retrieving revision 1.76
retrieving revision 1.77
diff -u -b -r1.76 -r1.77
--- complete.el 26 Jul 2007 05:26:19 -0000      1.76
+++ complete.el 7 Aug 2007 03:02:04 -0000       1.77
@@ -450,6 +450,7 @@
         env-on
         regex
         p offset
+         abbreviated
         (poss nil)
         helpposs
         (case-fold-search completion-ignore-case))
@@ -586,17 +587,42 @@
                  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 poss
+            ;; Try completion as an abbreviation, e.g. "mvb" ->
+            ;; "m-v-b" -> "multiple-value-bind"
+            (setq origstr str
+                  abbreviated t)
+            (if filename
+                (cond
+                  ;; "alpha" or "/alpha" -> expand whole path.
+                  ((string-match "^/?\\([A-Za-z0-9]+\\)$" str)
+                   (setq
+                    basestr ""
+                    p nil
+                    poss (PC-expand-many-files
+                          (concat "/"
+                                  (mapconcat #'list (match-string 1 str) "*/")
+                                  "*"))
+                    beg (1- beg)))
+                  ;; Alphanumeric trailer -> expand trailing file
+                  ((string-match "^\\(.+/\\)\\([A-Za-z0-9]+\\)$" str)
+                   (setq regex (concat "\\`"
+                                        (mapconcat #'list
+                                                   (match-string 2 str)
+                                                   "[A-Za-z0-9]*[^A-Za-z0-9]"))
+                          p (1+ (length (match-string 1 str))))))
+                (setq regex (concat "\\`" (mapconcat #'list str "[^-]*-"))
+                      p 1))))
+        (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
@@ -605,12 +631,24 @@
                                       table
                                       pred)))
          (setq p compl)
+            (when (and compl abbreviated)
+              (if filename
+                  (progn
+                    (setq p nil)
+                    (dolist (x compl)
+                      (when (string-match regex x)
+                        (push x p)))
+                    (setq basestr (try-completion "" p)))
+                  (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)
@@ -644,6 +682,7 @@
              (and p (setq poss p))))
 
       ;; Now we have a list of possible completions
+
       (cond
 
        ;; No valid completions found
@@ -653,6 +692,9 @@
            (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]"
@@ -789,13 +831,18 @@
                           (setq completion-base-size (if dirname
                                                          dirlength
                                                        (- beg prompt-end))))))
-                 (PC-temp-minibuffer-message " [Next char not unique]"))
-               nil)))))
+                             (PC-temp-minibuffer-message " [Next char not 
unique]"))))))
+           ;; Expansion of filenames is not reversible, so just keep
+           ;; the prefix.
+           (when (and abbreviated filename)
+             (delete-region (point) end))
+           nil)
 
        ;; Only one possible completion
        (t
        (if (and (equal basestr (car poss))
-                (not (and env-on filename)))
+                 (not (and env-on filename))
+                 (not abbreviated))
            (if (null mode)
                (PC-temp-minibuffer-message " [Sole completion]"))
          (delete-region beg end)
@@ -853,13 +900,11 @@
 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)