History deduplication in birdc.

diff --git a/client/client.c b/client/client.c
index 7f9e0ef4b0077e06ec31637ffb2038b5610f8aa6..8711cf0ad349e280308f0f1633da541afa3cac0e 100644 (file)
--- a/client/client.c
+++ b/client/client.c
@@ -135,6 +135,14 @@ submit_server_command(char *cmd)
   num_lines = 2;
 }
 
+static void
+add_history_dedup(char *cmd)
+{
+  /* Add history line if it differs from the last one */
+  HIST_ENTRY *he = history_get(history_length);
+  if (!he || strcmp(he->line, cmd))
+    add_history(cmd);
+}
 
 static void
 got_line(char *cmd_buffer)
@@ -151,7 +159,7 @@ got_line(char *cmd_buffer)
       cmd = cmd_expand(cmd_buffer);
       if (cmd)
        {
-         add_history(cmd);
+         add_history_dedup(cmd);
 
          if (!handle_internal_command(cmd))
            submit_server_command(cmd);
@@ -159,7 +167,7 @@ got_line(char *cmd_buffer)
          free(cmd);
        }
       else
-       add_history(cmd_buffer);
+       add_history_dedup(cmd_buffer);
     }
   free(cmd_buffer);
 }