From 2a909b3bcfc027366e33a4d4a933237fa7c61497 Mon Sep 17 00:00:00 2001
From: Knut Ahlers <knut@ahlers.me>
Date: Tue, 5 Mar 2019 15:23:27 +0100
Subject: [PATCH] Fix: Don't crash on unset variable

Signed-off-by: Knut Ahlers <knut@ahlers.me>
---
 .config/i3blocks/wifi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.config/i3blocks/wifi b/.config/i3blocks/wifi
index 6013735..9852cb5 100755
--- a/.config/i3blocks/wifi
+++ b/.config/i3blocks/wifi
@@ -19,4 +19,4 @@ network=$(iwgetid -r)
 printf "\uf9a1 <span color=\"#8FAAFC\">%s</span> <span color=\"#50fa7b\">(%s)</span>" ${network} ${ip}
 
 # On click copy IP
-[ -n "${BLOCK_BUTTON}" ] && echo -n "${ip}" | tr -d '\n' | xclip -selection c
+[ -n "${BLOCK_BUTTON:-}" ] && echo -n "${ip}" | tr -d '\n' | xclip -selection c