[PATCH] readline: use a simple function to replace printf

[Sascha Hauer]

On Thu, Apr 14, 2016 at 09:46:54PM +0800, Du Huanpeng wrote:
> From: Du Huanpeng <u74147 at gmail.com>
> 
> maybe this patch is not very necessary, but this make we have
> opportunity to use simplified version of printf.
>   printf ("%.*s", n, str);

I see no real value in this patch since we do have a full printf.
Without full printf we likely also do not need readline.

Sascha

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