* replace.el (query-replace-defaults): New variable.

	(query-replace-read-from): Use `query-replace-defaults' for
	default value, instead of history list.
	(query-replace-read-to): Update `query-replace-defaults'.

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 8e2edd4..fe49db5 100644 (file)
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,10 @@
+2006-05-28  Chong Yidong  <cyd@stupidchicken.com>
+
+       * replace.el (query-replace-defaults): New variable.
+       (query-replace-read-from): Use `query-replace-defaults' for
+       default value, instead of history list.
+       (query-replace-read-to): Update `query-replace-defaults'.
+
 2006-05-27  Chong Yidong  <cyd@stupidchicken.com>
 
        * msb.el (mouse-select-buffer): Minor fix to make popup menu work

diff --git a/lisp/replace.el b/lisp/replace.el
index 305573a..53148be 100644 (file)
--- a/lisp/replace.el
+++ b/lisp/replace.el
@@ -36,6 +36,11 @@
 
 (defvar query-replace-history nil)
 
+(defvar query-replace-defaults nil
+  "Default values of FROM-STRING and TO-STRING for `query-replace'.
+This is a cons cell (FROM-STRING . TO-STRING), or nil if there is
+no default value.")
+
 (defvar query-replace-interactive nil
   "Non-nil means `query-replace' uses the last search string.
 That becomes the \"string to replace\".")
@@ -94,32 +99,27 @@ The return value can also be a pair (FROM . TO) indicating that the user
 wants to replace FROM with TO."
   (if query-replace-interactive
       (car (if regexp-flag regexp-search-ring search-ring))
-    (let* ((lastfrom (car (symbol-value query-replace-from-history-variable)))
-          (lastto (car (symbol-value query-replace-to-history-variable)))
-          (from
+    (let  ((from
            ;; The save-excursion here is in case the user marks and copies
            ;; a region in order to specify the minibuffer input.
            ;; That should not clobber the region for the query-replace itself.
            (save-excursion
-             (when (equal lastfrom lastto)
-               ;; Typically, this is because the two histlists are shared.
-               (setq lastfrom (cadr (symbol-value
-                                     query-replace-from-history-variable))))
              (read-from-minibuffer
-              (if (and lastto lastfrom)
+              (if query-replace-defaults
                   (format "%s (default %s -> %s): " prompt
-                          (query-replace-descr lastfrom)
-                          (query-replace-descr lastto))
+                          (query-replace-descr (car query-replace-defaults))
+                          (query-replace-descr (cdr query-replace-defaults)))
                 (format "%s: " prompt))
               nil nil nil
               query-replace-from-history-variable
               nil t))))
-      (if (and (zerop (length from)) lastto lastfrom)
+      (if (and (zerop (length from)) query-replace-defaults)
          (progn
            (set query-replace-from-history-variable
                 (cdr (symbol-value query-replace-from-history-variable)))
-           (cons lastfrom
-                 (query-replace-compile-replacement lastto regexp-flag)))
+           (cons (car query-replace-defaults)
+                 (query-replace-compile-replacement
+                  (cdr query-replace-defaults) regexp-flag)))
        ;; Warn if user types \n or \t, but don't reject the input.
        (and regexp-flag
             (string-match "\\(\\`\\|[^\\]\\)\\(\\\\\\\\\\)*\\(\\\\[nt]\\)" from)
@@ -177,10 +177,12 @@ the original string if not."
   "Query and return the `to' argument of a query-replace operation."
   (query-replace-compile-replacement
    (save-excursion
-     (read-from-minibuffer
-      (format "%s %s with: " prompt (query-replace-descr from))
-      nil nil nil
-      query-replace-to-history-variable from t))
+     (let ((to (read-from-minibuffer
+               (format "%s %s with: " prompt (query-replace-descr from))
+               nil nil nil
+               query-replace-to-history-variable from t)))
+       (setq query-replace-defaults (cons from to))
+       to))
    regexp-flag))
 
 (defun query-replace-read-args (prompt regexp-flag &optional noerror)