From f0b7a447bf78c5f9230686b946e8b77cd25153f9 Mon Sep 17 00:00:00 2001
From: Ben Kibbey <bjk@luxsci.net>
Date: Sun, 21 Aug 2016 11:22:26 -0400
Subject: [PATCH] pwmc: Remove duplicate history items before appending.

---
 src/pwmc.c | 32 +++++++++++++++++++++++++++++++-
 1 file changed, 31 insertions(+), 1 deletion(-)

diff --git a/src/pwmc.c b/src/pwmc.c
index e9bfbae6..6aad430f 100644
--- a/src/pwmc.c
+++ b/src/pwmc.c
@@ -1255,6 +1255,36 @@ parse_dotcommand (const char *line, char **result,
 }
 
 #ifdef HAVE_LIBREADLINE
+#ifdef HAVE_READLINE_HISTORY
+static void
+add_history_item (const char *line)
+{
+  HIST_ENTRY **list, *p = NULL;
+  int i;
+
+  list = history_list ();
+  for (i = 0; list && list[i]; i++)
+    {
+      if (!strcmp (list[i]->line, line))
+        {
+          p = list[i];
+          break;
+        }
+    }
+
+  if (p)
+    {
+      char *s;
+
+      p = remove_history (i);
+      s = free_history_entry (p);
+      free (s);
+    }
+
+  add_history (line);
+}
+#endif
+
 static gpg_error_t
 do_interactive ()
 {
@@ -1311,7 +1341,7 @@ do_interactive ()
 	}
 
 #ifdef HAVE_READLINE_HISTORY
-      add_history (line);
+      add_history_item (line);
 #endif
       rc = parse_dotcommand (line, &result, &len, inq);
       free (line);
-- 
2.11.4.GIT