Don't store repeated commands in the editline history buffer.

The equivalent of bash HISTCONTROL=ignoredups.

Review: https://reviewboard.asterisk.org/r/2775/

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@397415 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/main/asterisk.c b/main/asterisk.c
index d6a454e8b5a1537efdf913bb72eb0fbebef28d6c..959993147045ed79bb2dffe04561b8c3d7c7a729 100644 (file)
--- a/main/asterisk.c
+++ b/main/asterisk.c
@@ -3021,12 +3021,23 @@ static int ast_el_initialize(void)
 static int ast_el_add_history(char *buf)
 {
        HistEvent ev;
+       char *stripped_buf;
 
-       if (el_hist == NULL || el == NULL)
+       if (el_hist == NULL || el == NULL) {
                ast_el_initialize();
-       if (strlen(buf) > (MAX_HISTORY_COMMAND_LENGTH - 1))
+       }
+       if (strlen(buf) > (MAX_HISTORY_COMMAND_LENGTH - 1)) {
                return 0;
-       return (history(el_hist, &ev, H_ENTER, ast_strip(ast_strdupa(buf))));
+       }
+
+       stripped_buf = ast_strip(ast_strdupa(buf));
+
+       /* HISTCONTROL=ignoredups */
+       if (!history(el_hist, &ev, H_FIRST) && strcmp(ev.str, stripped_buf) == 0) {
+               return 0;
+       }
+
+       return history(el_hist, &ev, H_ENTER, stripped_buf);
 }
 
 static int ast_el_write_history(char *filename)