* util.c (list_append_unique): New function - add text to GList

and remove duplicates.
* main.c (directory_history_add): Use list_append_unique().
* widget.c (push_history): Likewise.

src/ChangeLog

@@ -1,5 +1,10 @@
 2003-02-18  Pavel Roskin  <proski@gnu.org>
 
+	* util.c (list_append_unique): New function - add text to GList
+	and remove duplicates.
+	* main.c (directory_history_add): Use list_append_unique().
+	* widget.c (push_history): Likewise.
+
 	* panel.h: Convert directory history to GList.
 	* widget.h: Convert input history to GList.
 	Adjust all dependencies.

src/main.c

@@ -697,7 +697,7 @@ directory_history_add (struct WPanel *panel, char *s)
     text = g_strdup (s);
     strip_password (s, 1);
 
-    panel->dir_history = g_list_append (panel->dir_history, text);
+    panel->dir_history = list_append_unique (panel->dir_history, text);
 }
 
 /*

src/util.c

@@ -1163,6 +1163,25 @@ concat_dir_and_file (const char *dir, const char *file)
 	return  g_strconcat (dir, PATH_SEP_STR, file, NULL);
 }
 
+
+/* Append text to GList, remove all entries with the same text */
+GList *
+list_append_unique (GList *list, char *text)
+{
+    GList *link, *newlink;
+
+    link = g_list_first (list);
+    while (link) {
+	newlink = g_list_next (link);
+	if (!strcmp ((char *) link->data, text))
+	    list = g_list_remove_link (list, link);
+	link = newlink;
+    }
+
+    return g_list_append (list, text);
+}
+
+
 /* Following code heavily borrows from libiberty, mkstemps.c */
 
 /* Number of attempts to create a temporary file */

src/util.h

@@ -125,6 +125,7 @@ void execute_hooks (Hook *hook_list);
 void delete_hook (Hook **hook_list, void (*hook_fn)(void *));
 int hook_present (Hook *hook_list, void (*hook_fn)(void *));
 
+GList *list_append_unique (GList *list, char *text);
 
 /* Position saving and restoring */
 

src/widget.c

@@ -1079,7 +1079,7 @@ push_history (WInput *in, char *text)
 	    strip_password (t, 1);
     }
 
-    in->history = g_list_append (in->history, t);
+    in->history = list_append_unique (in->history, t);
     in->need_push = 0;
 
     return 2;