zshrc: Add fallback to $BATTERY for backwards compatibility

Signed-off-by: Frank Terbeck <ft@grml.org>

diff --git a/etc/zsh/zshrc b/etc/zsh/zshrc
index 6130df9..4eb1b30 100644 (file)
--- a/etc/zsh/zshrc
+++ b/etc/zsh/zshrc
@@ -347,7 +347,7 @@ NOMENU=${NOMENU:-0}
 NOPRECMD=${NOPRECMD:-0}
 COMMAND_NOT_FOUND=${COMMAND_NOT_FOUND:-0}
 GRML_ZSH_CNF_HANDLER=${GRML_ZSH_CNF_HANDLER:-/usr/share/command-not-found/command-not-found}
-GRML_DISPLAY_BATTERY=${GRML_DISPLAY_BATTERY:-0}
+GRML_DISPLAY_BATTERY=${GRML_DISPLAY_BATTERY:-${BATTERY:-0}}
 GRMLSMALL_SPECIFIC=${GRMLSMALL_SPECIFIC:-1}
 ZSH_NO_DEFAULT_LOCALE=${ZSH_NO_DEFAULT_LOCALE:-0}