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bug#17839: 24.4.50; read-passwd echoes password input in non-interactive


From: Michael Albinus
Subject: bug#17839: 24.4.50; read-passwd echoes password input in non-interactive sessions
Date: Fri, 11 Jul 2014 11:15:14 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux)

Stefan Monnier <address@hidden> writes:

>> 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.

OK. There is now `read-hide-char', which triggers it. Users can let-bind
it to the character they prefer for hiding. This will be used in
`read-passwd', choosing the default ?. if it is not let-bound already.

>> +      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.

I've removed this.

The patch is committed to the trunk as revision 117510.

>         Stefan

Best regards, Michael.





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