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Allow tmux session name to be passed as env var

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For normal usage this change should be a NOOP. However it enables the
use case where the user might want to predefine what session gets
connected to when the shell is launched. Running `zsh` will still net
you a connection to the last used tmux session or a new one named
"zprezto" if none exists. However `env tmux_session=myname zsh` will
connect you specifically to a session called 'myname' including creating
it if it doesn't exist.

This is particularly useful in window managers where a key binding might
open a terminal with a predefined session or even show a list of current
sessions and open a new terminal connected to that session.

The default session name may still be set using zstyle as documented.
This commit is contained in:
Caleb Maclennan 2015-08-19 15:26:20 +03:00
parent 1f4601e44c
commit c3f1794510
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GPG key ID: 63CC496475267693
2 changed files with 17 additions and 5 deletions
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11
modules/tmux/README.md
View file

@ -33,6 +33,17 @@ You can change the default session name with:
zstyle ':prezto:module:tmux:session' name '<YOUR DEFAULT SESSION NAME>'
```
A session name may also be specified in an environment variable before ZSH runs.
```sh
env tmux_session='<SESSION NAME>' zsh
```
This can be useful for example to connect to a specific remote session
connecting via SSH (note that OpenSSH needs to be configured to pass on that
environment variable). It can also be used with window managers to set keybindings
that launch terminals with specific sessions.
With `auto-start` enabled, you may want to control how multiple sessions are
managed. The `destroy-unattached` option of tmux controls if the unattached
sessions must be kept alive, making sessions available for later use, configured

11
modules/tmux/init.zsh
View file

@ -29,16 +29,17 @@ if [[ -z "$TMUX" && -z "$EMACS" && -z "$VIM" && -z "$INSIDE_EMACS" && -z "$VSCOD
); then
tmux start-server
# Create a 'prezto' session if no session has been defined in tmux.conf.
if ! tmux has-session 2> /dev/null; then
zstyle -s ':prezto:module:tmux:session' name tmux_session || tmux_session='prezto'
# Make sure we have a session to connect to, either named via an environment
# variable, the default style as documented, or 'prezto' for last resort
[[ -z "${tmux_session:// }" ]] && zstyle -s ':prezto:module:tmux:session' name tmux_session || : ${tmux_session:=prezto}
if ! tmux has-session -t "$tmux_session" 2> /dev/null; then
tmux \
new-session -d -s "$tmux_session" \; \
set-option -t "$tmux_session" destroy-unattached off &> /dev/null
fi
# Attach to the 'prezto' session or to the last session used. (detach first)
exec tmux $_tmux_iterm_integration attach-session -d
# Attach to the session name requested in an environment variable or the default (detaching others)
exec tmux $_tmux_iterm_integration attach-session -t "$tmux_session" -d
fi
#