From a7e60e4a9367117fa39ecf1de9ce63383878538b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marc=20Cornell=C3=A0?= <marc.cornella@live.com>
Date: Fri, 12 Feb 2016 18:55:53 +0100
Subject: [PATCH] Style fixes and shorter command lookup

---
 plugins/cask/cask.plugin.zsh | 43 ++++++++++++++++++++----------------
 1 file changed, 24 insertions(+), 19 deletions(-)

diff --git a/plugins/cask/cask.plugin.zsh b/plugins/cask/cask.plugin.zsh
index bc0006d9..29120b30 100644
--- a/plugins/cask/cask.plugin.zsh
+++ b/plugins/cask/cask.plugin.zsh
@@ -1,21 +1,26 @@
 () {
-  if which cask &> /dev/null; then
-    local cask_bin cask_base f comp_files
-    cask_bin=$(which cask)
-    cask_base=${cask_bin:h:h}
-    # Plain cask installation location (for Cask 0.7.2 and earlier)
-    comp_files=( $cask_base/etc/cask_completion.zsh )
-    # Mac Homebrew installs the completion in a different location
-    if which brew &> /dev/null; then
-      comp_files+=`brew --prefix`/share/zsh/site-functions/cask_completion.zsh
-    fi
-    for f in $comp_files; do
-      if [[ -f $f ]]; then
-        source $f;
-        break;
-      fi
-    done
-  else
-    print "zsh cask plugin: cask not found"
+  emulate -L zsh
+
+  if ! (( $+commands[cask] )); then
+    print "zsh cask plugin: cask command not found" >&2
+    return
   fi
-}
\ No newline at end of file
+
+  cask_base=${commands[cask]:h:h}
+
+  # Plain cask installation location (for Cask 0.7.2 and earlier)
+  comp_files=($cask_base/etc/cask_completion.zsh)
+
+  # Mac Homebrew installs the completion in a different location
+  if (( $+commands[brew] )); then
+    comp_files+=($(brew --prefix)/share/zsh/site-functions/cask_completion.zsh)
+  fi
+
+  # Load first found file
+  for f in $comp_files; do
+    if [[ -f "$f" ]]; then
+      source "$f"
+      break
+    fi
+  done
+}