import of readline-4.3

1 files changed, 9 insertions, 8 deletions

diff --git a/readline/undo.c b/readline/undo.c
index f7f30d1..25c287b 100644
--- a/readline/undo.c
+++ b/readline/undo.c
@@ -48,8 +48,7 @@
 #include "history.h"
 
 #include "rlprivate.h"
-
-#define SWAP(s, e)  do { int t; t = s; s = e; e = t; } while (0)
+#include "xmalloc.h"
 
 /* Non-zero tells rl_delete_text and rl_insert_text to not add to
    the undo list. */
@@ -86,7 +85,7 @@ rl_add_undo (what, start, end, text)
 
 /* Free the existing undo list. */
 void
-free_undo_list ()
+rl_free_undo_list ()
 {
   while (rl_undo_list)
     {
@@ -107,17 +106,18 @@ int
 rl_do_undo ()
 {
   UNDO_LIST *release;
-  int waiting_for_begin = 0;
-  int start, end;
+  int waiting_for_begin, start, end;
 
 #define TRANS(i) ((i) == -1 ? rl_point : ((i) == -2 ? rl_end : (i)))
 
+  start = end = waiting_for_begin = 0;
   do
     {
       if (!rl_undo_list)
 	return (0);
 
       _rl_doing_an_undo = 1;
+      RL_SETSTATE(RL_STATE_UNDOING);
 
       /* To better support vi-mode, a start or end value of -1 means
 	 rl_point, and a value of -2 means rl_end. */
@@ -152,11 +152,12 @@ rl_do_undo ()
 	  if (waiting_for_begin)
 	    waiting_for_begin--;
 	  else
-	    ding ();
+	    rl_ding ();
 	  break;
 	}
 
       _rl_doing_an_undo = 0;
+      RL_UNSETSTATE(RL_STATE_UNDOING);
 
       release = rl_undo_list;
       rl_undo_list = rl_undo_list->next;
@@ -231,7 +232,7 @@ rl_revert_line (count, key)
      int count, key;
 {
   if (!rl_undo_list)
-    ding ();
+    rl_ding ();
   else
     {
       while (rl_undo_list)
@@ -254,7 +255,7 @@ rl_undo_command (count, key)
 	count--;
       else
 	{
-	  ding ();
+	  rl_ding ();
 	  break;
 	}
     }