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

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From: Michael Albinus <michael.albinus <at> gmx.de>
To: Stefan Monnier <monnier <at> iro.umontreal.ca>
Cc: Andreas Schwab <schwab <at> suse.de>, 17839 <at> debbugs.gnu.org, Sebastian Wiesner <swiesner <at> lunaryorn.com>
Subject: bug#17839: 24.4.50; read-passwd echoes password input in non-interactive sessions
Date: Thu, 10 Jul 2014 16:36:43 +0200

[Message part 1 (text/plain, inline)]

Stefan Monnier <monnier <at> iro.umontreal.ca> writes:

> If someone is motivated, I would even accept a patch that turns echo off
> temporarily.

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

# emacs -batch -eval '(progn (message (read-string "Prompt1: ")) (message (read-passwd "Prompt2: ")) (message (read-string "Prompt3: ")))'

The patch is not perfect (it doesn't handled multi-byte chars, and I
have tested it only under Gnu/Linux), but it is a first step.

Comments?

>         Stefan

Best regards, Michael.

[diff (text/x-patch, attachment)]

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