From 088502c30c50c6f21e8a46fc1b057ab80fcd0963 Mon Sep 17 00:00:00 2001
From: romkatv <roman.perepelitsa@gmail.com>
Date: Wed, 19 Jun 2019 15:56:22 +0200
Subject: [PATCH] fix _get_icon on ZSH 5.1

ZSH 5.1 has crippled ${(P)...}. For example, the following code prints "broken":

    unset foo
    echo ${${(P)foo}+broken}

In ZSH 5.2 and later this code print an empty line.

Fixes #91.
---
 internal/p10k.zsh | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/internal/p10k.zsh b/internal/p10k.zsh
index 4366628d..3d499c73 100755
--- a/internal/p10k.zsh
+++ b/internal/p10k.zsh
@@ -77,8 +77,9 @@ _p9k_cache_get() {
 
 # Sets _P9K_RETVAL to the icon whose name is supplied via $1.
 _p9k_get_icon() {
-  local var_name=POWERLEVEL9K_$1
-  _P9K_RETVAL=${(g::)${${(P)var_name}-$icons[$1]}}
+  local x=POWERLEVEL9K_$1
+  (( $+parameters[$x] )) && x=${(P)x} || x=$icons[$1]
+  _P9K_RETVAL=${(g::)x}
   [[ $_P9K_RETVAL != $'\b'? ]] || _P9K_RETVAL="%{$_P9K_RETVAL%}"  # penance for past sins
 }