Fix add_history usage in down arrow handler

[Programming with GNU
History](http://www.math.utah.edu/docs/info/hist_2.html) mentions
using_history().

Chet, maintainer of readline told me about it. (Thanks Chet!)

Seems like we need to call this so that the history offset is at the
right end of the list. I assume it's called in the linehandler
automatically.

Fix https://github.com/profanity-im/profanity/issues/200

1 files changed, 1 insertions, 4 deletions

diff --git a/src/ui/inputwin.c b/src/ui/inputwin.c
index db42c5a8..5c4b6630 100644
--- a/src/ui/inputwin.c
+++ b/src/ui/inputwin.c
@@ -822,11 +822,8 @@ static int
 _inp_rl_down_arrow_handler(int count, int key)
 {
     add_history(rl_line_buffer);
-    //also tried: add_history(rl_copy_text(0, rl_end));
-    //also tried: add_history("Hello");
+    using_history();
     rl_replace_line("", 0);
     rl_redisplay();
-    rl_end = 0; // why is this neeed? shouln't replace_line do this?
-    rl_point = 0; // why is this neeed? shouln't replace_line do this?
     return 0;
 }