The existing script would fail if run from within tmux as the default
behavior would cause a nested tmux session which is bad. This update
detects if the current context is within tmux and properly handles this
by creating a detached session and switching to it as needed.
The idea with this is for tat to behave correctly regardless of context,
which I believe this update achieves. Existing users and workflows all
work identically, but now this adds support for a workflow that remains
within tmux at all times.
I prefer to remain within tmux all the time, rather than falling back to
the shell, navigating to another directory, and then creating the
session from there. With this update, I split a pane in the current tmux
window, navigate to the directory for the new session, and use `tat` to
open (or attach) to the new-session without ever leaving tmux.
I actually [have a binding that I use for this][], `C-b` (I am
"breaking" out a new session), that is mapped to `bind C-b send-keys
'tat && exit' 'C-m'`, which also cleans up the pane.
The reason for wanting this workflow is I am pretty strict about keeping
a tmux session focused to a single project (~ maps to a git repo). I
regularly want to reference another app and will use this workflow to
quickly open that project in a new session.
A "detached" session is one which has no clients attached. [From the man
page entry][] for `new-session`: `The new session is attached to the
current terminal unless -d is given.` This essentially creates it in the
background, preventing nesting. Then the script can attach the current
client using the `switch-client` command.
[have a binding that I use for this]: 01cc928672/tmux/tmux.conf (L89)
[From the man page entry]: http://www.openbsd.org/cgi-bin/man.cgi/OpenBSD-current/man1/tmux.1?query=tmux&sec=1
I've been experimenting with a workflow where I only run long-running
processes in tmux. Examples:
zeus start
foreman start
rake
tmux (or screen) are good at that: maintaining a long-running process
across shell sessions.
Instead of opening another tmux pane for vim and another for git
commands, Rails generators, test runs, etc., I do all of that outside of
tmux in my normal shell window. Those are all targeted, quick, actions.
They are what I am doing *right now*. It's my workspace.
While experimenting with this process, I noticed, I do jump into tmux
more often. Therefore, I wanted a shorter command for attaching to the
tmux session with the same name as the current directory.
