I'm used to using nested sessions to manage different contexts. For
example, in the outer session I open a new window, start a nested
session and ssh into a bunch of different machines for a client I'm
working on. I can bounce between client machines in my nested session,
and bounce around to my other tasks in my main outer session.

This works well with GNU screen, as I can set different escape
prefixes in the outer and inner sessions. Say my .screenrc has "escape
^Ll". When I open the inner session, I can type "^Ll:escape ^Oo". Now
^Oc creates a new window in the inner session, and ^Lc creates a new
window in the outer session.

I can't find a way to do this with tmux. I start a nested session with
"TMUX= tmux". I then type "^Ll:set-option -g prefix C-o", and this
changes the prefix for both the outer and inner sessions.

In case it matters, my .tmux.conf is:

set -g default-terminal screen-256color-bce
set -g history-limit 1000
set -sg escape-time 0

bind-key C-n next-window
bind-key C-p previous-window

unbind-key C-b
set-option -g prefix C-l
bind-key l send-prefix
bind-key C-l last-window


Does tmux provide a better way to have these multiple contexts, like
the nested sessions provide in GNU screen? Or is there a way to have
different prefixes for the inner and outer sessions?

Thank you,

Tim

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