From f665eec230e66cc62f0c6a02cc63dc13e3124e5c Mon Sep 17 00:00:00 2001
From: Daniel Shahaf <danielsh@apache.org>
Date: Mon, 8 Jan 2018 05:44:54 +0000
Subject: [PATCH] driver: Avoid a fork in the common case.

Found-by: Matthew Martin
---
 zsh-syntax-highlighting.zsh | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/zsh-syntax-highlighting.zsh b/zsh-syntax-highlighting.zsh
index f020b33..04152c4 100644
--- a/zsh-syntax-highlighting.zsh
+++ b/zsh-syntax-highlighting.zsh
@@ -65,7 +65,13 @@ _zsh_highlight__function_is_autoload_stub_p() {
 
 # Return True iff the argument denotes a function name.
 _zsh_highlight__is_function_p() {
-  (( ${+functions[$1]} )) || [[ $(type -wa -- "$1") == *'function'* ]]
+  if (( ${+functions} )); then
+    ## zsh/parameter is available
+    (( ${+functions[$1]} ))
+  else
+    ## zsh/parameter isn't available
+    [[ $(type -wa -- "$1") == *'function'* ]]
+  fi
 }
 
 # This function takes a single argument F and returns True iff F denotes the