2013-01-08 16:45:28 -08:00
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#!/bin/sh
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#
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2014-06-13 21:26:02 -04:00
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# Attach or create tmux session named the same as current directory.
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2013-01-08 16:45:28 -08:00
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Update tat script to also work from within tmux
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]: https://github.com/christoomey/dotfiles/blob/01cc928672ea857aafbe904968010baabfe6aebb/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
2014-12-09 11:10:23 -05:00
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session_name="$(basename "$PWD" | tr . -)"
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not_in_tmux() {
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[ -z "$TMUX" ]
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}
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session_exists() {
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tmux list-sessions | sed -E 's/:.*$//' | grep -q "^$session_name$"
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}
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create_detached_session() {
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(TMUX='' tmux new-session -Ad -s "$session_name")
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}
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create_if_needed_and_attach() {
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if not_in_tmux; then
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tmux new-session -As "$session_name"
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else
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if ! session_exists; then
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create_detached_session
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fi
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tmux switch-client -t "$session_name"
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fi
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}
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create_if_needed_and_attach
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