From e04f6ab862de39771427087334415398def71fe4 Mon Sep 17 00:00:00 2001
From: Julien Nicoulaud <julien.nicoulaud@gmail.com>
Date: Fri, 17 Jun 2011 12:36:07 +0200
Subject: [PATCH] Safety checks before looking up cursor position

---
 zsh-syntax-highlighting.zsh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/zsh-syntax-highlighting.zsh b/zsh-syntax-highlighting.zsh
index 6d7736f..36e9fe7 100644
--- a/zsh-syntax-highlighting.zsh
+++ b/zsh-syntax-highlighting.zsh
@@ -110,7 +110,7 @@ _zsh_highlight_buffer_modified()
 # Returns 0 if the cursor has moved since _zsh_highlight was last called.
 _zsh_highlight_cursor_moved()
 {
-  (($_ZSH_HIGHLIGHT_PRIOR_CURSOR != $CURSOR))
+  [[ -n $CURSOR ]] && [[ -n $_ZSH_HIGHLIGHT_PRIOR_CURSOR ]] && (($_ZSH_HIGHLIGHT_PRIOR_CURSOR != $CURSOR))
 }