From e8cc271314612cf2aad1fe8e9e28d1a9c24ae0c8 Mon Sep 17 00:00:00 2001
From: Randy <randomize46@gmail.com>
Date: Mon, 24 Mar 2014 08:45:34 +0200
Subject: [PATCH 1/2] Resolves slow performance in brackets highlighter

---
 highlighters/brackets/brackets-highlighter.zsh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/highlighters/brackets/brackets-highlighter.zsh b/highlighters/brackets/brackets-highlighter.zsh
index 8e635dd..ee4a83b 100644
--- a/highlighters/brackets/brackets-highlighter.zsh
+++ b/highlighters/brackets/brackets-highlighter.zsh
@@ -49,6 +49,7 @@ _zsh_highlight_brackets_highlighter()
 {
   local level=0 pos
   local -A levelpos lastoflevel matching typepos
+  region_highlight=()
 
   # Find all brackets and remember which one is matching
   for (( pos = 0; $pos < ${#BUFFER}; pos++ )) ; do

From 7edd08156e98b8be451bd5a034714746894b2a3d Mon Sep 17 00:00:00 2001
From: Randy <randomize46@gmail.com>
Date: Sat, 29 Mar 2014 22:52:10 +0200
Subject: [PATCH 2/2] Chaned main highlighter alorithm to resolve issue #77

---
 zsh-syntax-highlighting.zsh | 41 +++++++++++++++++++++----------------
 1 file changed, 23 insertions(+), 18 deletions(-)

diff --git a/zsh-syntax-highlighting.zsh b/zsh-syntax-highlighting.zsh
index cdbe4c4..65f1938 100644
--- a/zsh-syntax-highlighting.zsh
+++ b/zsh-syntax-highlighting.zsh
@@ -54,37 +54,42 @@ _zsh_highlight()
   # Do not highlight if there are pending inputs (copy/paste).
   [[ $PENDING -gt 0 ]] && return $ret
 
+  # Reset region highlight to build it from scratch
+  region_highlight=();
+
   {
-    local -a selected_highlighters
     local cache_place
+    local -a region_highlight_copy
 
     # Select which highlighters in ZSH_HIGHLIGHT_HIGHLIGHTERS need to be invoked.
     local highlighter; for highlighter in $ZSH_HIGHLIGHT_HIGHLIGHTERS; do
 
+      # eval cache place for current highlighter and prepare it
+      cache_place="_zsh_highlight_${highlighter}_highlighter_cache"
+      typeset -ga ${cache_place}
+
       # If highlighter needs to be invoked
       if "_zsh_highlight_${highlighter}_highlighter_predicate"; then
 
-        # Mark the highlighter as selected for update.
-        selected_highlighters+=($highlighter)
+        # save a copy, and cleanup region_highlight
+        region_highlight_copy=("${region_highlight[@]}")
+        region_highlight=()
 
-        # Remove what was stored in its cache from region_highlight.
-        cache_place="_zsh_highlight_${highlighter}_highlighter_cache"
-        typeset -ga ${cache_place}
-        [[ ${#${(P)cache_place}} -gt 0 ]] && [[ ! -z ${region_highlight-} ]] && region_highlight=(${region_highlight:#(${(P~j.|.)cache_place})})
+        # Execute highlighter and save result
+        {
+          "_zsh_highlight_${highlighter}_highlighter"
+        } always {
+          eval "${cache_place}=(\"\${region_highlight[@]}\")"
+        }
+
+        # Restore saved region_highlight
+        region_highlight=("${region_highlight_copy[@]}")
 
       fi
-    done
 
-    # Invoke each selected highlighter and store the result in its cache.
-    local -a region_highlight_copy
-    for highlighter in $selected_highlighters; do
-      cache_place="_zsh_highlight_${highlighter}_highlighter_cache"
-      region_highlight_copy=($region_highlight)
-      {
-        "_zsh_highlight_${highlighter}_highlighter"
-      } always  {
-        [[ ! -z ${region_highlight-} ]] && : ${(PA)cache_place::=${region_highlight:#(${(~j.|.)region_highlight_copy})}}
-      }
+      # Use value form cache if any cached
+      eval "region_highlight+=(\"\${${cache_place}[@]}\")"
+
     done
 
   } always {