From 002f7b81a14def4ce7f1d5ea100825f0b8ebc464 Mon Sep 17 00:00:00 2001
From: Ben Klein <robobenklein@gmail.com>
Date: Wed, 11 Jul 2018 16:19:52 -0400
Subject: [PATCH 1/2] Replace [[-v with `defined`

For zsh 5.1 compatibility.
---
 powerlevel9k.zsh-theme | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/powerlevel9k.zsh-theme b/powerlevel9k.zsh-theme
index c1ea754f..f1db3da1 100755
--- a/powerlevel9k.zsh-theme
+++ b/powerlevel9k.zsh-theme
@@ -498,7 +498,7 @@ prompt_battery() {
     fi
   fi
   # return if POWERLEVEL9K_BATTERY_HIDE_ABOVE_THRESHOLD is set and the battery percentage is greater or equal
-  if [[ -v "POWERLEVEL9K_BATTERY_HIDE_ABOVE_THRESHOLD" && "${bat_percent}" -ge $POWERLEVEL9K_BATTERY_HIDE_ABOVE_THRESHOLD ]]; then
+  if defined POWERLEVEL9K_BATTERY_HIDE_ABOVE_THRESHOLD && [[ "${bat_percent}" -ge $POWERLEVEL9K_BATTERY_HIDE_ABOVE_THRESHOLD ]]; then
     return
   fi
 

From 45b0d68ec435a89ccc13193149a5bc306d449d04 Mon Sep 17 00:00:00 2001
From: Ben Klein <robobenklein@gmail.com>
Date: Thu, 12 Jul 2018 14:34:56 -0400
Subject: [PATCH 2/2] Replace `typeset` check with shellvar flag

More performance without changing functionality.
---
 functions/utilities.zsh | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/functions/utilities.zsh b/functions/utilities.zsh
index 69fd2ec8..127007fb 100755
--- a/functions/utilities.zsh
+++ b/functions/utilities.zsh
@@ -9,9 +9,7 @@
 # Exits with 0 if a variable has been previously defined (even if empty)
 # Takes the name of a variable that should be checked.
 function defined() {
-  local varname="$1"
-
-  typeset -p "$varname" > /dev/null 2>&1
+  [[ ! -z "${(tP)1}" ]]
 }
 
 # Given the name of a variable and a default value, sets the variable