[PATCH] long prompts do not show vi search prefix

[Dylan Cali]

Hello,

For long prompts (127 chars or longer), vi search mode does not
display the [/?] prompt prefix.

I've included a small program below demonstrating the issue, and a
very small patch fixing it.

#include <stdio.h>
#include <readline/readline.h>

int main(void)
{
    rl_variable_bind("editing-mode", "vi");

    //char prompt[126]; /* displays search prefix */
    char prompt[127];   /* does not */

    int i;
    for ( i = 0; i < sizeof(prompt)-1; i++ ) {
        prompt[i] = 'x';
    }

    prompt[sizeof(prompt)-1] = '\0';

    while (1) {
        char *line = readline(prompt);
        add_history(line);
    }
}

Thank you!

From 2774192e93991e3d85ccc37c714aa018e442af6d Mon Sep 17 00:00:00 2001
From: Dylan Cali <calid1...@gmail.com>
Date: Sat, 23 Aug 2014 02:26:05 -0500
Subject: [PATCH] fix vi search prompt bug for long prompts

---
 display.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/display.c b/display.c
index 4df1f73..e575b16 100644
--- a/display.c
+++ b/display.c
@@ -2259,7 +2259,7 @@ rl_message (va_alist)
       va_start (args);
       format = va_arg (args, char *);
 #endif
-      vsnprintf (msg_buf, msg_bufsiz - 1, format, args);
+      vsnprintf (msg_buf, msg_bufsiz, format, args);
     }
 #else
   vsprintf (msg_buf, format, args);
-- 
1.7.10.4