From: Mark Wooding <mdw@distorted.org.uk>
Date: Mon, 20 Apr 2020 12:14:23 +0000 (+0100)
Subject: bin/wakey.zsh: Don't do anything if there's no X display, or `notify-send'.
X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~mdw/git/profile/commitdiff_plain/0b69235c37663429003691a815b78c645d42f783

bin/wakey.zsh: Don't do anything if there's no X display, or `notify-send'.
---

diff --git a/bin/wakey.zsh b/bin/wakey.zsh
index 41ccafd..94638ca 100644
--- a/bin/wakey.zsh
+++ b/bin/wakey.zsh
@@ -40,5 +40,12 @@ __wakey_precmd () {
   esac
 }
 
-preexec_functions+=(__wakey_preexec)
-precmd_functions+=(__wakey_precmd)
+case ${DISPLAY-nil} in
+  nil) ;;
+  *)
+    if whence notify-send >/dev/null 2>&1; then
+      preexec_functions+=(__wakey_preexec)
+      precmd_functions+=(__wakey_precmd)
+    fi
+    ;;
+esac