GNU bug report logs - #17839
24.4.50; read-passwd echoes password input in non-interactive sessions

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Message #52 received at 17839 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Michael Albinus <michael.albinus <at> gmx.de>
Cc: Andreas Schwab <schwab <at> suse.de>, 17839 <at> debbugs.gnu.org,
 Sebastian Wiesner <swiesner <at> lunaryorn.com>
Subject: Re: bug#17839: 24.4.50;
 read-passwd echoes password input in non-interactive sessions
Date: Thu, 10 Jul 2014 12:43:46 -0400

> Well, I've tried this 'cos I believe it is important.  The idea is to
> give the prompt in read-passwd the text property 'hide-chars.  In
> noninteractive mode, emacs writes "." instead of echoing the password
> while typing. You can test it with

I think a more idiomatic way to do that would be to use a global Lisp
var that's let-bound in read-passwd.

> +      else if (hide_chars && (c == 127)) /* DEL */
> +	{
> +	  /* Unfortunately, we cannot edit stdout.  */
> +	  // fprintf (stdout, "%c", c);
> +	  /* Hmm, this doesn't work for multi-byte characters.  */
> +	  (len > 0) && len--;
> +	}

I don't think that's worth the trouble.


        Stefan

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