* vc.el (vc-dired-hook): Speed tuning. Replace a vc-backend call

with vc-state.

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 29eff1f..582cfb1 100644 (file)
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,8 @@
+2008-01-01  Eric S. Raymond  <esr@snark.thyrsus.com>
+
+       * vc.el (vc-dired-hook):  Speed tuning.  Replace a vc-backend call
+       with vc-state.
+
 2007-12-31  Tom Tromey  <address@hidden>
 
         * emacs-lisp/elp.el (elp-results): Use header-line-format for

diff --git a/lisp/vc-svn.el b/lisp/vc-svn.el
index c1261c5..96bc128 100644 (file)
--- a/lisp/vc-svn.el
+++ b/lisp/vc-svn.el
@@ -536,6 +536,10 @@ and that it passes `vc-svn-global-switches' to it before FLAGS."
       nil)
     (message "There are unresolved conflicts in this file")))
 
+(defun vc-file-setprop2 (f p v)
+  (message (format "On file %s. setting property %s to %s" f p v))
+  (sit-for 2))
+
 (defun vc-svn-parse-status (&optional filename)
   "Parse output of \"svn status\" command in the current buffer.
 Set file properties accordingly.  Unless FILENAME is non-nil, parse only
@@ -544,7 +548,7 @@ information about FILENAME and return its status."
     (goto-char (point-min))
     (while (re-search-forward
             ;; Ignore the files with status X.
-           "^[ ACDGIMR!?~][ MC][ L][ +][ S]..\\([ *]\\) +\\([-0-9]+\\) +\\([0-9?]+\\) +\\([^ ]+\\) +" nil t)
+           "^\\? +|^[ ACDGIMR!~][ MC][ L][ +][ S]..\\([ *]\\) +\\([-0-9]+\\) +\\([0-9?]+\\) +\\([^ ]+\\) +" nil t)
       ;; If the username contains spaces, the output format is ambiguous,
       ;; so don't trust the output's filename unless we have to.
       (setq file (or filename
@@ -552,37 +556,37 @@ information about FILENAME and return its status."
                       (buffer-substring (point) (line-end-position)))))
       (setq status (char-after (line-beginning-position)))
       (if (eq status ??)
-         (vc-file-setprop file 'vc-state 'unregistered)
+         (vc-file-setprop2 file 'vc-state 'unregistered)
        ;; `vc-BACKEND-registered' must not set vc-backend,
        ;; which is instead set in vc-registered.
-       (unless filename (vc-file-setprop file 'vc-backend 'SVN))
+       (unless filename (vc-file-setprop2 file 'vc-backend 'SVN))
        ;; Use the last-modified revision, so that searching in vc-print-log
        ;; output works.
-       (vc-file-setprop file 'vc-working-revision (match-string 3))
+       (vc-file-setprop2 file 'vc-working-revision (match-string 3))
         ;; Remember Svn's own status.
-        (vc-file-setprop file 'vc-svn-status status)
-       (vc-file-setprop
+        (vc-file-setprop2 file 'vc-svn-status status)
+       (vc-file-setprop2
         file 'vc-state
         (cond
          ((eq status ?\ )
           (if (eq (char-after (match-beginning 1)) ?*)
               'needs-patch
-             (vc-file-setprop file 'vc-checkout-time
+             (vc-file-setprop2 file 'vc-checkout-time
                               (nth 5 (file-attributes file)))
             'up-to-date))
          ((eq status ?A)
           ;; If the file was actually copied, (match-string 2) is "-".
-          (vc-file-setprop file 'vc-working-revision "0")
-          (vc-file-setprop file 'vc-checkout-time 0)
+          (vc-file-setprop2 file 'vc-working-revision "0")
+          (vc-file-setprop2 file 'vc-checkout-time 0)
           'added)
          ((memq status '(?M ?C))
           (if (eq (char-after (match-beginning 1)) ?*)
               'needs-merge
             'edited))
          ((eq status ?I)
-          (vc-file-setprop file 'vc-state 'ignored))
+          (vc-file-setprop2 file 'vc-state 'ignored))
          ((eq status ?R)
-          (vc-file-setprop file 'vc-state 'removed))
+          (vc-file-setprop2 file 'vc-state 'removed))
          (t 'edited)))))
     (if filename (vc-file-getprop filename 'vc-state))))
 

diff --git a/lisp/vc.el b/lisp/vc.el
index 621802c..ddcb53a 100644 (file)
--- a/lisp/vc.el
+++ b/lisp/vc.el
@@ -2393,27 +2393,25 @@ Called by dired after any portion of a vc-dired buffer has been read in."
            (t
             (vc-dired-reformat-line nil)
             (forward-line 1))))
-        ;; try to head off calling the expensive state query -
+        ;; Try to head off calling the expensive state query -
         ;; ignore object files, TeX intermediate files, and so forth.
         ((vc-dired-ignorable-p filename)
          (dired-kill-line))
-         ;; ordinary file -- call the (possibly expensive) state query
-         (t
-         (let ((backend (vc-backend filename)))
-           (cond
-            ;; Not registered
-            ((not backend)
-             (if vc-dired-terse-mode
-                 (dired-kill-line)
-               (vc-dired-reformat-line "?")
-               (forward-line 1)))
-            ;; Either we're in non-terse mode or it's out of date 
-            ((not (and vc-dired-terse-mode (vc-up-to-date-p filename)))
-             (vc-dired-reformat-line (vc-call dired-state-info filename))
-             (forward-line 1))
-            ;; Remaining cases are under version control but uninteresting 
-            (t 
-             (dired-kill-line)))))))
+         ;; Ordinary file -- call the (possibly expensive) state query
+        ;;
+        ;; First case: unregistered or unknown. (Unknown shouldn't happen here)
+        ((member (vc-state filename) '(nil unregistered))
+         (if vc-dired-terse-mode
+             (dired-kill-line)
+           (vc-dired-reformat-line "?")
+           (forward-line 1)))
+        ;; Either we're in non-terse mode or it's out of date 
+        ((not (and vc-dired-terse-mode (vc-up-to-date-p filename)))
+         (vc-dired-reformat-line (vc-call dired-state-info filename))
+         (forward-line 1))
+        ;; Remaining cases are under version control but uninteresting 
+        (t     
+         (dired-kill-line))))
        ;; any other line
        (t (forward-line 1))))
     (vc-dired-purge))