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$_tty is gone after system upgrade

X-seq: zsh-users 28126
From: Ray Andrews <rayandrews@xxxxxxxxxxx>
To: Zsh Users <zsh-users@xxxxxxx>
Subject: $_tty is gone after system upgrade
Date: Sun, 25 Sep 2022 08:32:18 -0700
Archived-at: <https://zsh.org/users/28126>
List-id: <zsh-users.zsh.org>

I'm upgrading my system from Debian 9 to Debian 11 and my zsh is nowwhatever Debian installed (vs. old system where I was running Roman'spre-build). Prompt is:


    PS1=$'\n$_tty $_yel%d $_mag$cc$_nrm $ '

... which returned just the number of the current terminal on the oldsystem but now


    $ echo $_tty

... returns nothing.

    $ echo $TTY

... shows " /dev/pts/3 " and of course I can strip that down to just thenumber, but still it seems strange that " $_tty " is gone. What's thestory?

Follow-Ups:
- Re: $_tty is gone after system upgrade
  - From: Roman Perepelitsa

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