From 68f7ad2755b67558989400577bcb8d45a0de1d12 Mon Sep 17 00:00:00 2001
From: Tony Narlock <tony@git-pull.com>
Date: Tue, 27 Dec 2022 11:58:17 -0600
Subject: [PATCH 1/2] feat(shell): Detect TMUX if exists

---
 src/tmuxp/cli/shell.py | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/src/tmuxp/cli/shell.py b/src/tmuxp/cli/shell.py
index 9be9b863083..7ea117cbf20 100644
--- a/src/tmuxp/cli/shell.py
+++ b/src/tmuxp/cli/shell.py
@@ -1,5 +1,6 @@
 import argparse
 import os
+import pathlib
 import typing as t
 
 from libtmux.server import Server
@@ -140,6 +141,17 @@ def command_shell(
     - :attr:`libtmux.Server.attached_sessions`, :attr:`libtmux.Session.attached_window`,
       :attr:`libtmux.Window.attached_pane`
     """
+    # If inside a server, detect socket_path
+    env_tmux = os.getenv("TMUX")
+    if env_tmux is not None and isinstance(env_tmux, str):
+        env_socket_path = pathlib.Path(env_tmux.split(",")[0])
+        if (
+            env_socket_path.exists()
+            and args.socket_path is None
+            and args.socket_name is None
+        ):
+            args.socket_path = str(env_socket_path)
+
     server = Server(socket_name=args.socket_name, socket_path=args.socket_path)
 
     server.raise_if_dead()

From 6cfa40a690477ef4840511ed732715391f2aeb12 Mon Sep 17 00:00:00 2001
From: Tony Narlock <tony@git-pull.com>
Date: Tue, 27 Dec 2022 12:04:38 -0600
Subject: [PATCH 2/2] docs(CHANGES): Note tmuxp shell improvement

---
 CHANGES | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/CHANGES b/CHANGES
index 81a590d7fa0..db47a983940 100644
--- a/CHANGES
+++ b/CHANGES
@@ -19,6 +19,8 @@ $ pipx install --suffix=@next 'tmuxp' --pip-args '\--pre' --force
 
 <!-- Maintainers, insert changes / features for the next release here -->
 
+- `tmuxp shell` now detects current `server` via `TMUX` (#854)
+
 ## tmuxp 1.21.0 (2022-12-27)
 
 *Maintenance only, no bug fixes or features*