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Disable auto-start for multiplexers with SSH #292

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Disable auto-start for multiplexers with SSH #292

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9 changes: 9 additions & 0 deletions modules/screen/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,15 @@ To enable this feature, add the following line to *zpreztorc*:

zstyle ':prezto:module:screen' auto-start 'yes'

#### SSH and auto-start

To avoid having screen sessions inside screen sessions, auto-start is disabled for
SSH access.

It is possible to re-enable auto-start for SSH sessions with

zstyle ':prezto:module:screen' remote 'yes'

Aliases
-------

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3 changes: 2 additions & 1 deletion modules/screen/init.zsh
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Expand Up @@ -14,7 +14,8 @@ fi
# Auto Start
#

if [[ -z "$STY" ]] && zstyle -t ':prezto:module:screen' auto-start; then
if ( [[ -z "$SSH_CLIENT" ]] || zstyle -t ':prezto:module:screen' remote ) &&
( [[ -z "$STY" ]] && zstyle -t ':prezto:module:screen' auto-start ); then
session="$(
screen -list 2> /dev/null \
| sed '1d;$d' \
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9 changes: 9 additions & 0 deletions modules/tmux/README.md
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Expand Up @@ -21,6 +21,15 @@ To avoid keeping open sessions, this module sets `destroy-unattached off` on
the background session and `destroy-unattached on` on every other session
(global setting).

#### SSH and auto-start

To avoid having tmux sessions inside tmux sessions, auto-start is disabled for
SSH access.

It is possible to re-enable auto-start for SSH sessions with

zstyle ':prezto:module:tmux' remote 'yes'

Aliases
-------

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3 changes: 2 additions & 1 deletion modules/tmux/init.zsh
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Expand Up @@ -15,7 +15,8 @@ fi
# Auto Start
#

if [[ -z "$TMUX" ]] && zstyle -t ':prezto:module:tmux' auto-start; then
if ( [[ -z "$SSH_CLIENT" ]] || zstyle -t ':prezto:module:tmux' remote ) &&
( [[ -z "$TMUX" ]] && zstyle -t ':prezto:module:tmux' auto-start ); then
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This if statement is a bit hard to read. It looks to me like it fails on localhost if remote is not set to true.

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I think I understood it after I translated it to something more readable.

( is-false "$_screen_is_on_remote" || is-true "$_screen_auto_start_on_remote" ) && ( is-false "$_screen_is_started" && is-true "$_screen_auto_start")

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It's basically:

If we are not in a SSH (remote) session or if starting the multiplexer in a SSH (remote) session is enabled
and, if the multiplexer isn't started and if auto-start is enabled.

tmux_session='#Prezto'

if ! tmux has-session -t "$tmux_session" 2> /dev/null; then
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5 changes: 5 additions & 0 deletions runcoms/zpreztorc
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Expand Up @@ -81,6 +81,9 @@ zstyle ':prezto:module:prompt' theme 'sorin'
# Auto start a session when Zsh is launched.
# zstyle ':prezto:module:screen' auto-start 'yes'

# Allow auto-start with an SSH connection
# zstyle ':prezto:module:screen' remote 'yes'

#
# SSH-Agent
#
Expand Down Expand Up @@ -118,3 +121,5 @@ zstyle ':prezto:module:terminal' auto-title 'yes'
# Auto start a session when Zsh is launched.
# zstyle ':prezto:module:tmux' auto-start 'yes'

# Allow auto-start with an SSH connection
# zstyle ':prezto:module:tmux' remote 'yes'