Subject: 24.5; comint-password-prompt-regexp and openvpn

From: Syd Bauman <[email-masked]>
Date: Wed, 9 Oct 2019 14:02:13 -0400

>From `emacs -Q -nw`:

 1) M-x shell
 2) In *shell* buffer, issue `openvpn`
 3) Password for sudo is appropriately collected in minibuffer w/o
    echoing, but password for openvpn is prompted for in the *shell*
    buffer and echoed. The prompt that is not recognized by
    comint-watch-for-password-prompt is "Enter Auth Password: ".
 4) I have tried customizing comint-password-prompt-regexp, and if I set
    it to just "Enter Auth Password: ", it works in that the password is
    collected in the minibuffer w/o echoing. However, there are control
    characters fore and aft which should probably be stripped.
    ('^[[0;1;39m' before and '^[[0m' after the prompt characters.)

 Sample session
 ------ -------
 $ sudo openvpn --config /home/syd/.config/OpenVPN/RAC_ambupro/AmbuPro.ovpn 
 $ [sudo] password for syd:
 > Wed Oct  9 13:45:15 2019 OpenVPN 2.3.10 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [PKCS11] [MH] [IPv6] built on Jan  9 2019
 > Wed Oct  9 13:45:15 2019 library versions: OpenSSL 1.0.2g  1 Mar 2016, LZO 2.08
 $ Enter Auth Username: sbauman
 > *******
 $ Enter Auth Password: asdf
 > ****

In GNU Emacs 24.5.1 (x86_64-pc-linux-gnu, GTK+ Version 3.18.9)
 of 2017-09-20 on lcy01-07, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11804000
System Description:     Ubuntu 16.04.6 LTS

Configured using:
 `configure --build x86_64-linux-gnu --prefix=/usr
 --sharedstatedir=/var/lib --libexecdir=/usr/lib
 --localstatedir=/var/lib --infodir=/usr/share/info
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 --build x86_64-linux-gnu --prefix=/usr --sharedstatedir=/var/lib
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 'CFLAGS=-g -O2 -fstack-protector-strong -Wformat
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Important settings:
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  value of $LC_NUMERIC: en_US.UTF-8
  value of $LC_TIME: en_US.UTF-8
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Major mode: Shell

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Mark set
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