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bug#28500: 25.3; shell mode starts echoing command

From: Andreas Schwab
Subject: bug#28500: 25.3; shell mode starts echoing command
Date: Tue, 19 Sep 2017 15:36:09 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux)

On Sep 19 2017, Barry Warsaw <address@hidden> wrote:

> On Sep 19, 2017, at 03:34, Andreas Schwab <address@hidden> wrote:
>> On Sep 18 2017, Mike Kupfer <address@hidden> wrote:
>>> I see the same issue after using openssl to encrypt or decrypt a file.
>>> Just never got around to filing a bug report...
>>> -----8<-----8<-----
>>> alto$ openssl aes-256-cbc -in foo.txt -out foo.text.enc
>>> enter aes-256-cbc encryption password:
>>> Verifying - enter aes-256-cbc encryption password:
>>> alto$ ls
>>> ls
>>> deb9-upgrade.log  foo.text.enc      ieee-cs-election-receipt.pdf
>>> enchant.dummy*        foo.txt       net-neutrality-comments.pdf
>>> alto$ echo $SHELL
>>> echo $SHELL
>>> /bin/bash
>>> alto$
>>> ----->8----->8-----
>>> I see this on Debian 8 and on Solaris, with various versions of Emacs.
>> This is a bug in openssl, it doesn't properly restore the tty settings
>> after reading the password.
> Andreas, can you provide any additional details?  What exactly is not getting 
> restored?  Are the other two examples I posted (python3 and sqlite3) related? 
>  Why would it occur on (for me) macOS but not Ubuntu?

$ stty; openssl aes-256-cbc -in foo.txt -out foo.text.enc; stty


Andreas Schwab, SUSE Labs, address@hidden
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

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