From 527f95fee93610a73ac63f4916bf8e1cfe35fefe Mon Sep 17 00:00:00 2001
From: "Suraj N. Kurapati" <sunaku@gmail.com>
Date: Tue, 13 Mar 2012 10:32:59 -0700
Subject: [PATCH] GH-9: retain search query highlight on cursor move

---
 zsh-history-substring-search.zsh | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/zsh-history-substring-search.zsh b/zsh-history-substring-search.zsh
index 9468a3b..3867656 100644
--- a/zsh-history-substring-search.zsh
+++ b/zsh-history-substring-search.zsh
@@ -89,11 +89,14 @@ zmodload -F zsh/parameter
 #
 if [[ $+functions[_zsh_highlight] -eq 0 ]]; then
   #
-  # Dummy implementation of _zsh_highlight()
-  # that simply removes existing highlights
+  # Dummy implementation of _zsh_highlight() that
+  # simply removes any existing highlights when the
+  # user inserts printable characters into $BUFFER.
   #
   function _zsh_highlight() {
-    region_highlight=()
+    if [[ $KEYS == [[:print:]] ]]; then
+      region_highlight=()
+    fi
   }
 
   #