i9e: Fix a prompt display issue

If a line handler calls PARA_XXX_LOG() to write a log message before
attaching a buffer tree node, the prompt is not displayed properly.

Fix this by attaching a dummy btrn before the line handler is called.

diff --git a/interactive.c b/interactive.c
index f281901248e3aebe878553220dda938d1c3fbece..ef6fc7620195188db8ccf491176142b29690a9ba 100644 (file)
--- a/interactive.c
+++ b/interactive.c
@@ -290,21 +290,21 @@ static bool input_available(void)
 static void i9e_line_handler(char *line)
 {
        int ret;
+       struct btr_node *dummy = btr_new_node(&(struct btr_node_description)
+               EMBRACE(.name = "dummy line handler"));
+       i9e_attach_to_stdout(dummy);
 
        ret = i9ep->ici->line_handler(line);
        if (ret < 0)
                PARA_WARNING_LOG("%s\n", para_strerror(-ret));
        rl_set_prompt("");
        if (line) {
-               if (!*line)
-                       rl_set_prompt(i9ep->ici->prompt);
-               else
+               if (*line)
                        add_history(line);
                free(line);
-       } else {
-               rl_set_prompt("");
+       } else
                i9ep->input_eof = true;
-       }
+       btr_remove_node(&dummy);
 }
 
 static int i9e_post_select(__a_unused struct sched *s, __a_unused struct task *t)