From 98aab2024c284681aa1cdcd5ded6121a90af2c70 Mon Sep 17 00:00:00 2001
From: Daniel Shahaf <d.s@daniel.shahaf.name>
Date: Wed, 15 Jun 2016 23:26:23 +0000
Subject: [PATCH] driver: Reimplement using 'add-zle-hook-widget
 zle-line-pre-redraw'

This feature will be released in zsh 5.3.  Older zsh's will use the existing
codepath.
---
 zsh-syntax-highlighting.zsh | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/zsh-syntax-highlighting.zsh b/zsh-syntax-highlighting.zsh
index 2b00a7f..a19ec0e 100644
--- a/zsh-syntax-highlighting.zsh
+++ b/zsh-syntax-highlighting.zsh
@@ -43,7 +43,9 @@ if true; then
 fi
 
 integer zsh_highlight_use_redrawhook
-if zle -la .match-bracket; then
+if autoload -U +X -- add-zle-hook-widget 2>/dev/null;
+   [[ "${${(@f)"$(which -- add-zle-hook-widget)"}[2]}" != $'\t'$histchars[3]' undefined' ]];
+then
   (( zsh_highlight_use_redrawhook=1 ))
 fi
 
@@ -275,7 +277,7 @@ _zsh_highlight_bind_widgets()
 
 if (( $zsh_highlight_use_redrawhook )); then
   _zsh_highlight_bind_widgets(){}
-  zle -N zle-line-pre-redraw _zsh_highlight
+  add-zle-hook-widget zle-line-pre-redraw _zsh_highlight
 fi
 
 # Load highlighters from directory.