Merged in changes from CVS trunk.

[gnu-emacs] / src / fileio.c

diff --git a/src/fileio.c b/src/fileio.c
index 587f36d537dc6e032c2cda1a0aab92af5e6f6a97..f038bca2865cf469aef659fd57d80980688638ec 100644 (file)
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -230,6 +230,8 @@ extern int minibuf_level;
 
 extern int minibuffer_auto_raise;
 
+extern int history_delete_duplicates;
+
 /* These variables describe handlers that have "already" had a chance
    to handle the current operation.
 
@@ -6188,7 +6190,7 @@ The return value is only relevant for a call to `read-file-name' that happens
 before any other event (mouse or keypress) is handeled.  */)
   ()
 {
-#if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) || defined (TARGET_API_MAC_CARBON)
+#if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) || defined (HAVE_CARBON)
   if ((NILP (last_nonmenu_event) || CONSP (last_nonmenu_event))
       && use_dialog_box
       && use_file_dialog
@@ -6329,7 +6331,7 @@ and `read-file-name-function'.  */)
 
   GCPRO2 (insdef, default_filename);
 
-#if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) || defined (TARGET_API_MAC_CARBON)
+#if defined (USE_MOTIF) || defined (HAVE_NTGUI) || defined (USE_GTK) || defined (HAVE_CARBON)
   if (! NILP (Fnext_read_file_uses_dialog_p ()))
     {
       /* If DIR contains a file name, split it.  */
@@ -6385,7 +6387,13 @@ and `read-file-name-function'.  */)
   if (replace_in_history)
     /* Replace what Fcompleting_read added to the history
        with what we will actually return.  */
-    XSETCAR (Fsymbol_value (Qfile_name_history), double_dollars (val));
+    {
+       Lisp_Object val1 = double_dollars (val);
+       tem = Fsymbol_value (Qfile_name_history);
+       if (history_delete_duplicates) 
+        XSETCDR (tem, Fdelete (val1, XCDR(tem)));
+       XSETCAR (tem, val1);
+    }
   else if (add_to_history)
     {
       /* Add the value to the history--but not if it matches
@@ -6393,8 +6401,10 @@ and `read-file-name-function'.  */)
       Lisp_Object val1 = double_dollars (val);
       tem = Fsymbol_value (Qfile_name_history);
       if (! CONSP (tem) || NILP (Fequal (XCAR (tem), val1)))
-       Fset (Qfile_name_history,
-             Fcons (val1, tem));
+       {
+         if (history_delete_duplicates) tem = Fdelete (val1, tem);
+         Fset (Qfile_name_history, Fcons (val1, tem));
+       }
     }
 
   return val;