From ac80bf13a931dda2035debb426a048d42a00ddb2 Mon Sep 17 00:00:00 2001
From: Daniel Mendler <mail@daniel-mendler.de>
Date: Mon, 23 Dec 2024 19:50:09 +0100
Subject: [PATCH] exwm-enable: Set environment variable INSIDE_EXWM

* exwm.el (exwm-enable): Set environment variable INSIDE_EXWM such that EXWM can
be detected inside nested Emacs sessions.
---
 exwm.el | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/exwm.el b/exwm.el
index 8e94a80..a0731d9 100644
--- a/exwm.el
+++ b/exwm.el
@@ -1002,6 +1002,7 @@ FRAME, if given, indicates the X display EXWM should manage."
     (xcb:disconnect exwm--connection))
   (setq exwm--connection nil)
   (setq exwm--terminal nil)
+  (setenv "INSIDE_EXWM" nil)
   (exwm--log "Exited"))
 
 ;;;###autoload
@@ -1025,6 +1026,7 @@ Optional argument UNDO may be either of the following symbols:
      (setq frame-resize-pixelwise t     ;mandatory; before init
            window-resize-pixelwise t
            x-no-window-manager t)
+     (setenv "INSIDE_EXWM" "1")
      ;; Ignore unrecognized command line arguments.  This can be helpful
      ;; when EXWM is launched by some session manager.
      (push #'vector command-line-functions)