From 074c0dbd09c7349ef41589e1b503247da1d716fc Mon Sep 17 00:00:00 2001
From: Justin Zhu <jz@twitter.com>
Date: Tue, 19 Apr 2011 15:26:20 -0700
Subject: [PATCH] zsh highlight

---
 plugins/zsh-syntax-highlighting/COPYING.md    |  23 ++
 plugins/zsh-syntax-highlighting/GREETINGS.md  |  17 +
 plugins/zsh-syntax-highlighting/README.md     |  73 +++++
 .../highlighters/brackets.zsh                 |  89 +++++
 .../highlighters/keyword.zsh                  |  63 ++++
 .../tests/data/multiple-redirections.zsh      |  47 +++
 .../tests/data/nested-parentheses.zsh         |  35 ++
 .../tests/data/simple-command.zsh             |  35 ++
 .../tests/data/simple-redirection.zsh         |  39 +++
 .../tests/data/unknown-command.zsh            |  35 ++
 .../tests/test-highlighting.zsh               |  94 ++++++
 .../tests/test-perfs.zsh                      |  54 ++++
 .../zsh-syntax-highlighting.plugin.zsh        |   1 +
 .../zsh-syntax-highlighting.zsh               | 303 ++++++++++++++++++
 14 files changed, 908 insertions(+)
 create mode 100644 plugins/zsh-syntax-highlighting/COPYING.md
 create mode 100644 plugins/zsh-syntax-highlighting/GREETINGS.md
 create mode 100644 plugins/zsh-syntax-highlighting/README.md
 create mode 100644 plugins/zsh-syntax-highlighting/highlighters/brackets.zsh
 create mode 100644 plugins/zsh-syntax-highlighting/highlighters/keyword.zsh
 create mode 100644 plugins/zsh-syntax-highlighting/tests/data/multiple-redirections.zsh
 create mode 100644 plugins/zsh-syntax-highlighting/tests/data/nested-parentheses.zsh
 create mode 100644 plugins/zsh-syntax-highlighting/tests/data/simple-command.zsh
 create mode 100644 plugins/zsh-syntax-highlighting/tests/data/simple-redirection.zsh
 create mode 100644 plugins/zsh-syntax-highlighting/tests/data/unknown-command.zsh
 create mode 100755 plugins/zsh-syntax-highlighting/tests/test-highlighting.zsh
 create mode 100755 plugins/zsh-syntax-highlighting/tests/test-perfs.zsh
 create mode 120000 plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.plugin.zsh
 create mode 100644 plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh

diff --git a/plugins/zsh-syntax-highlighting/COPYING.md b/plugins/zsh-syntax-highlighting/COPYING.md
new file mode 100644
index 000000000..2aa64389e
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/COPYING.md
@@ -0,0 +1,23 @@
+Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification, are permitted
+provided that the following conditions are met:
+
+ * Redistributions of source code must retain the above copyright notice, this list of conditions
+   and the following disclaimer.
+ * Redistributions in binary form must reproduce the above copyright notice, this list of
+   conditions and the following disclaimer in the documentation and/or other materials provided
+   with the distribution.
+ * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+   may be used to endorse or promote products derived from this software without specific prior
+   written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/plugins/zsh-syntax-highlighting/GREETINGS.md b/plugins/zsh-syntax-highlighting/GREETINGS.md
new file mode 100644
index 000000000..f75d4c113
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/GREETINGS.md
@@ -0,0 +1,17 @@
+Authors / Greetings
+===================
+
+ * [Roy Zuo](https://github.com/roylez)
+ * [Julien Nicoulaud](https://github.com/nicoulaj)
+ * [Dave Ingram](https://github.com/dingram)
+ * [Mounier Florian](https://github.com/paradoxxxzero)
+ * [Jonathan Dahan](https://github.com/jedahan)
+ * James Ahlborn
+ * [Andreas Jaggi](https://github.com/x-way)
+ * [Wayne Davison](https://github.com/WayneD)
+ * [Suraj N. Kurapati](https://github.com/sunaku)
+ * [Takeshi Banse](https://github.com/hchbaw)
+ * [Sorin Ionescu](https://github.com/sorin-ionescu)
+ * [Clayton Parker](https://github.com/claytron)
+ * [Arlen Cuss](https://github.com/celtic)
+ * [Nakamura Yoshitaka](https://github.com/nakamuray)
diff --git a/plugins/zsh-syntax-highlighting/README.md b/plugins/zsh-syntax-highlighting/README.md
new file mode 100644
index 000000000..d57441858
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/README.md
@@ -0,0 +1,73 @@
+zsh-syntax-highlighting ![Project status](http://stillmaintained.com/nicoulaj/zsh-syntax-highlighting.png)
+==========================================================================================================
+
+**[Fish shell](http://www.fishshell.com) like syntax highlighting for [Zsh](http://www.zsh.org).**
+
+*Requirements: zsh 4.3.9 or superior.*
+
+
+## Try it
+
+Here is a one-liner to try it without installing or modifying anything:
+
+    wget --no-check-certificate --output-document=/tmp/zsh-syntax-highlighting.zsh https://github.com/nicoulaj/zsh-syntax-highlighting/raw/master/zsh-syntax-highlighting.zsh && . /tmp/zsh-syntax-highlighting.zsh
+
+
+## Install it
+
+
+### In your ~/.zshrc
+
+* Download the script or clone this repository:
+
+      git clone git://github.com/nicoulaj/zsh-syntax-highlighting.git
+
+* Source the script **at the end** of `~/.zshrc`:
+
+      source /path/to/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh
+
+* Source `~/.zshrc`  to take changes into account:
+
+      source ~/.zshrc
+
+
+### With oh-my-zsh
+
+* Download the script or clone this repository in [oh-my-zsh](http://github.com/robbyrussell/oh-my-zsh) plugins directory:
+
+      cd ~/.oh-my-zsh/plugins/
+      git clone git://github.com/nicoulaj/zsh-syntax-highlighting.git
+
+* Activate the plugin in `~/.zshrc` (in **last** position):
+
+      plugins=( [plugins...] zsh-syntax-highlighting)
+
+* Source `~/.zshrc`  to take changes into account:
+    
+      source ~/.zshrc
+
+
+## Tweak it
+
+Optionally, you can override the default styles used for highlighting. The styles are declared in the `ZSH_HIGHLIGHT_STYLES` array. You can override styles this way:
+
+    # To differentiate aliases from other command types
+    ZSH_HIGHLIGHT_STYLES[alias]='fg=magenta,bold'
+    
+    # To have paths colored instead of underlined
+    ZSH_HIGHLIGHT_STYLES[path]='fg=cyan'
+    
+    # To disable highlighting of globbing expressions
+    ZSH_HIGHLIGHT_STYLES[globbing]='none'
+
+You can tweak the styles used to colorize matching brackets by overriding the `ZSH_HIGHLIGHT_MATCHING_BRACKETS_STYLES`.
+
+    ZSH_HIGHLIGHT_MATCHING_BRACKETS_STYLES=(
+      'fg=blue,bold'    # Style for first level of imbrication
+      'fg=green,bold'   # Style for second level of imbrication
+      'fg=magenta,bold' # etc... Put as many styles as you wish, or leave
+      'fg=yellow,bold'  # empty to disable brackets matching.
+      'fg=cyan,bold'
+    )
+
+This must be done **after** the script is sourced, otherwise your styles will be overwritten. The syntax for declaring styles is [documented here](http://zsh.sourceforge.net/Doc/Release/Zsh-Line-Editor.html#SEC135).
diff --git a/plugins/zsh-syntax-highlighting/highlighters/brackets.zsh b/plugins/zsh-syntax-highlighting/highlighters/brackets.zsh
new file mode 100644
index 000000000..6af9ba281
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/highlighters/brackets.zsh
@@ -0,0 +1,89 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+
+ZSH_HIGHLIGHT_STYLES+=(
+  bracket-error                 'fg=red,bold'
+)
+
+# Colors for bracket levels.
+# Put as many color as you wish.
+# Leave it as an empty array to disable.
+ZSH_HIGHLIGHT_MATCHING_BRACKETS_STYLES=(
+  'fg=blue,bold'
+  'fg=green,bold'
+  'fg=magenta,bold'
+  'fg=yellow,bold'
+  'fg=cyan,bold'
+)
+
+# Whether the bracket match highlighting shound be called or not.
+_zsh_highlight_bracket-match-p() {
+  _zsh_highlight_cursor-moved-p || _zsh_highlight_buffer-modified-p
+}
+
+# Bracket match highlighting.
+_zsh_highlight_bracket-match() {
+  bracket_color_size=${#ZSH_HIGHLIGHT_MATCHING_BRACKETS_STYLES}
+  if ((bracket_color_size > 0)); then
+    typeset -A levelpos lastoflevel matching revmatching
+    ((level = 0))
+    for pos in {1..${#BUFFER}}; do
+      case $BUFFER[pos] in
+        "("|"["|"{")
+          levelpos[$pos]=$((++level))
+          lastoflevel[$level]=$pos
+          ;;
+        ")"|"]"|"}")
+          matching[$lastoflevel[$level]]=$pos
+          revmatching[$pos]=$lastoflevel[$level]
+          levelpos[$pos]=$((level--))
+          ;;
+      esac
+    done
+    for pos in ${(k)levelpos}; do
+      level=$levelpos[$pos]
+      if ((level < 1)); then
+        region_highlight+=("$((pos - 1)) $pos "$ZSH_HIGHLIGHT_STYLES[bracket-error])
+      else
+        region_highlight+=("$((pos - 1)) $pos "$ZSH_HIGHLIGHT_MATCHING_BRACKETS_STYLES[(( (level - 1) % bracket_color_size + 1 ))])
+      fi
+    done
+    ((c = CURSOR + 1))
+    if [[ -n $levelpos[$c] ]]; then
+      ((otherpos = -1))
+      [[ -n $matching[$c] ]] && otherpos=$matching[$c]
+      [[ -n $revmatching[$c] ]] && otherpos=$revmatching[$c]
+      region_highlight+=("$((otherpos - 1)) $otherpos standout")
+    fi
+  fi
+}
+
+_zsh_highlight_add-highlighter _zsh_highlight_bracket-match
diff --git a/plugins/zsh-syntax-highlighting/highlighters/keyword.zsh b/plugins/zsh-syntax-highlighting/highlighters/keyword.zsh
new file mode 100644
index 000000000..7302d158f
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/highlighters/keyword.zsh
@@ -0,0 +1,63 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+
+# A simple keyword highlighting extension for zsh-syntax-highlighting.
+
+# To use this, please do the following steps.
+# 1) Source this file after zsh-syntax-highlighting.zsh
+# % source zsh-syntax-highlighting.zsh
+# % source contrib/keyword.zsh
+# 2) Add keyword and color pairs to `ZSH_HIGHLIGHT_KEYWORD_KEYWORDS`.
+# % ZSH_HIGHLIGHT_KEYWORD_KEYWORDS+=('rm -rf *' 'fg=white,bold,bg=red')
+# 3) Please see the effect.
+# % ;# rm -rf /tmp/doesnotexist
+
+# List of keyword and color pairs.
+typeset -gA ZSH_HIGHLIGHT_KEYWORD_KEYWORDS
+
+_zsh_highlight-keyword() {
+  setopt localoptions extendedglob
+  for pattern in ${(k)ZSH_HIGHLIGHT_KEYWORD_KEYWORDS}; do
+    _zsh_highlight-keyword-loop "$BUFFER" "$pattern"
+  done
+}
+
+_zsh_highlight-keyword-loop() {
+  # This does *not* do its job syntactically, sorry.
+  local buf="$1" pat="$2"
+  local -a match mbegin mend
+  if [[ "$buf" == (#b)(*)(${~pat})* ]]; then
+    region_highlight+=("$((mbegin[2] - 1)) $mend[2] $ZSH_HIGHLIGHT_KEYWORD_KEYWORDS[$pat]")
+    "$0" "$match[1]" "$pat"; return $?
+  fi
+}
+
+_zsh_highlight_add-highlighter _zsh_highlight-keyword _zsh_highlight_buffer-modified-p
diff --git a/plugins/zsh-syntax-highlighting/tests/data/multiple-redirections.zsh b/plugins/zsh-syntax-highlighting/tests/data/multiple-redirections.zsh
new file mode 100644
index 000000000..ac0606c9c
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/tests/data/multiple-redirections.zsh
@@ -0,0 +1,47 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+BUFFER='ps aux | grep java | sort | uniq | tail | head'
+
+expected_region_highlight=(
+  "1  2  $ZSH_HIGHLIGHT_STYLES[command]" # ps
+  "4  6  $ZSH_HIGHLIGHT_STYLES[default]" # aux
+  "8  8  $ZSH_HIGHLIGHT_STYLES[default]" # |
+  "10 13 $ZSH_HIGHLIGHT_STYLES[command]" # grep
+  "15 18 $ZSH_HIGHLIGHT_STYLES[default]" # java
+  "20 20 $ZSH_HIGHLIGHT_STYLES[default]" # |
+  "22 25 $ZSH_HIGHLIGHT_STYLES[command]" # sort
+  "27 27 $ZSH_HIGHLIGHT_STYLES[default]" # |
+  "29 32 $ZSH_HIGHLIGHT_STYLES[command]" # uniq
+  "34 34 $ZSH_HIGHLIGHT_STYLES[default]" # |
+  "36 39 $ZSH_HIGHLIGHT_STYLES[command]" # tail
+  "41 41 $ZSH_HIGHLIGHT_STYLES[default]" # |
+  "43 46 $ZSH_HIGHLIGHT_STYLES[command]" # head
+)
diff --git a/plugins/zsh-syntax-highlighting/tests/data/nested-parentheses.zsh b/plugins/zsh-syntax-highlighting/tests/data/nested-parentheses.zsh
new file mode 100644
index 000000000..840628218
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/tests/data/nested-parentheses.zsh
@@ -0,0 +1,35 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+BUFFER='echo $(echo ${(z)array})'
+
+expected_region_highlight=(
+  # TODO
+)
diff --git a/plugins/zsh-syntax-highlighting/tests/data/simple-command.zsh b/plugins/zsh-syntax-highlighting/tests/data/simple-command.zsh
new file mode 100644
index 000000000..4227c80e8
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/tests/data/simple-command.zsh
@@ -0,0 +1,35 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+BUFFER='ls'
+
+expected_region_highlight=(
+  "1 2 $ZSH_HIGHLIGHT_STYLES[command]" # ls
+)
diff --git a/plugins/zsh-syntax-highlighting/tests/data/simple-redirection.zsh b/plugins/zsh-syntax-highlighting/tests/data/simple-redirection.zsh
new file mode 100644
index 000000000..055b1cb8b
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/tests/data/simple-redirection.zsh
@@ -0,0 +1,39 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+BUFFER='ps aux | grep java'
+
+expected_region_highlight=(
+  "1  2  $ZSH_HIGHLIGHT_STYLES[command]" # ps
+  "4  6  $ZSH_HIGHLIGHT_STYLES[default]" # aux
+  "8  8  $ZSH_HIGHLIGHT_STYLES[default]" # |
+  "9  12 $ZSH_HIGHLIGHT_STYLES[command]" # grep
+  "14 17 $ZSH_HIGHLIGHT_STYLES[default]" # java
+)
diff --git a/plugins/zsh-syntax-highlighting/tests/data/unknown-command.zsh b/plugins/zsh-syntax-highlighting/tests/data/unknown-command.zsh
new file mode 100644
index 000000000..74854d422
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/tests/data/unknown-command.zsh
@@ -0,0 +1,35 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+BUFFER='azertyuiop'
+
+expected_region_highlight=(
+  "1  10  $ZSH_HIGHLIGHT_STYLES[unknown-token]" # azertyuiop
+)
diff --git a/plugins/zsh-syntax-highlighting/tests/test-highlighting.zsh b/plugins/zsh-syntax-highlighting/tests/test-highlighting.zsh
new file mode 100755
index 000000000..7166eaeb6
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/tests/test-highlighting.zsh
@@ -0,0 +1,94 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+
+local -a errors highlight_zone
+local -A observed_result
+
+# Load the main script.
+. $(dirname $0)/../zsh-syntax-highlighting.zsh
+
+# Process each test data file in data/.
+for data_file in $(dirname $0)/data/*.zsh; do
+
+  # Load the data and prepare checking it.
+  BUFFER= ; expected_region_highlight=(); errors=()
+  echo -n "* ${data_file:t:r}: "
+  . $data_file
+
+  # Check the data declares $BUFFER.
+  if [[ ${#BUFFER} -eq 0 ]]; then
+    errors+=("'BUFFER' is not declared or blank.")
+  else
+
+    # Check the data declares $expected_region_highlight.
+    if [[ ${#expected_region_highlight} -eq 0 ]]; then
+      errors+=("'expected_region_highlight' is not declared or empty.")
+    else
+
+      # Process the data.
+      region_highlight=()
+      _zsh_highlight-zle-buffer
+
+      # Overlapping regions can be declared in region_highlight, so we first build an array of the
+      # observed highlighting.
+      observed_result=()
+      for i in {1..${#region_highlight}}; do
+        highlight_zone=${(z)region_highlight[$i]}
+        for j in {$highlight_zone[1]..$highlight_zone[2]}; do
+          observed_result[$j]=$highlight_zone[3]
+        done
+      done
+
+      # Then we compare the observed result with the expected one.
+      for i in {1..${#expected_region_highlight}}; do
+        highlight_zone=${(z)expected_region_highlight[$i]}
+        for j in {$highlight_zone[1]..$highlight_zone[2]}; do
+          if [[ "$observed_result[$j]" != "$highlight_zone[3]" ]]; then
+            errors+=("'$BUFFER[$highlight_zone[1],$highlight_zone[2]]' [$highlight_zone[1],$highlight_zone[2]]: expected '$highlight_zone[3]', observed '$observed_result[$j]'.")
+            break
+          fi
+        done
+      done
+
+    fi
+  fi
+
+  # Format result/errors.
+  if [[ ${#errors} -eq 0 ]]; then
+    echo "OK"
+  else
+    echo "KO"
+    for error in $errors; do
+      echo "   - $error"
+    done
+  fi
+
+done
diff --git a/plugins/zsh-syntax-highlighting/tests/test-perfs.zsh b/plugins/zsh-syntax-highlighting/tests/test-perfs.zsh
new file mode 100755
index 000000000..570bce606
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/tests/test-perfs.zsh
@@ -0,0 +1,54 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+
+# Load the main script.
+. $(dirname $0)/../zsh-syntax-highlighting.zsh
+
+# Process each test data file in data/.
+for data_file in $(dirname $0)/data/*.zsh; do
+
+  # Load the data and prepare checking it.
+  BUFFER=
+  echo -n "* ${data_file:t:r}: "
+  . $data_file
+
+  # Check the data declares $BUFFER.
+  if [[ ${#BUFFER} -eq 0 ]]; then
+    echo "KO\n   - 'BUFFER' is not declared or blank."
+  else
+
+    # Measure the time taken by _zsh_highlight-zle-buffer.
+    TIMEFMT="%*Es"
+    time ( BUFFER="$BUFFER" && _zsh_highlight-zle-buffer)
+
+  fi
+
+done
diff --git a/plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.plugin.zsh b/plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.plugin.zsh
new file mode 120000
index 000000000..cc95cd491
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.plugin.zsh
@@ -0,0 +1 @@
+zsh-syntax-highlighting.zsh
\ No newline at end of file
diff --git a/plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh b/plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh
new file mode 100644
index 000000000..b6ff04394
--- /dev/null
+++ b/plugins/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh
@@ -0,0 +1,303 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2010-2011 zsh-syntax-highlighting contributors
+# All rights reserved.
+#
+# Redistribution and use in source and binary forms, with or without modification, are permitted
+# provided that the following conditions are met:
+#
+#  * Redistributions of source code must retain the above copyright notice, this list of conditions
+#    and the following disclaimer.
+#  * Redistributions in binary form must reproduce the above copyright notice, this list of
+#    conditions and the following disclaimer in the documentation and/or other materials provided
+#    with the distribution.
+#  * Neither the name of the zsh-syntax-highlighting contributors nor the names of its contributors
+#    may be used to endorse or promote products derived from this software without specific prior
+#    written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
+# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+# FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
+# IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+# OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# -------------------------------------------------------------------------------------------------
+# -*- mode: zsh; sh-indentation: 2; indent-tabs-mode: nil; sh-basic-offset: 2; -*-
+# vim: ft=zsh sw=2 ts=2 et
+# -------------------------------------------------------------------------------------------------
+
+
+# -------------------------------------------------------------------------------------------------
+# Core highlighting update system
+# -------------------------------------------------------------------------------------------------
+
+# Array used by highlighters to declare overridable styles.
+typeset -gA ZSH_HIGHLIGHT_STYLES
+
+# An `object' implemented by below 3 arrays' elements could be called a
+# `highlighter', registered by `_zsh_highlight_add-highlighter`. In other words, these
+# arrays are indexed and tied by their own functionality. If they have been
+# arranged inconsistently, things goes wrong.
+# Please see `_zsh_highlight-zle-buffer` and `_zsh_highlight_add-highlighter`.
+
+# Actual recolorize functions to be called.
+typeset -a zsh_highlight_functions; zsh_highlight_functions=()
+
+# Predicate functions whether its recolorize function should be called or not.
+typeset -a zsh_highlight_predicates; zsh_highlight_predicates=()
+
+# Highlight storages for each recolorize functions.
+typeset -a zsh_highlight_caches; zsh_highlight_caches=()
+
+_zsh_highlight-zle-buffer() {
+  if (( PENDING )); then
+    return
+  fi
+
+  local ret=$?
+  {
+    local -a funinds
+    local -i rh_size=$#region_highlight
+    for i in {1..${#zsh_highlight_functions}}; do
+      local pred=${zsh_highlight_predicates[i]} cache_place=${zsh_highlight_caches[i]}
+      if _zsh_highlight-zle-buffer-p "$rh_size" "$pred"; then
+        if ((${#${(P)cache_place}} > 0)); then
+          region_highlight=(${region_highlight:#(${(P~j.|.)cache_place})})
+          local -a empty; empty=(); : ${(PA)cache_place::=$empty}
+        fi
+        funinds+=$i
+      fi
+    done
+    for i in $funinds; do
+      local func=${zsh_highlight_functions[i]} cache_place=${zsh_highlight_caches[i]}
+      local -a rh; rh=($region_highlight)
+      {
+        "$func"
+      } always  {
+        : ${(PA)cache_place::=${region_highlight:#(${(~j.|.)rh})}}
+      }
+    done
+  } always {
+    ZSH_PRIOR_CURSOR=$CURSOR
+    ZSH_PRIOR_HIGHLIGHTED_BUFFER=$BUFFER
+    return $ret
+  }
+}
+
+# Whether supplied highlight_predicate satisfies or not.
+_zsh_highlight-zle-buffer-p() {
+  local region_highlight_size="$1" highlight_predicate="$2"
+  # If any highlightings are not taken into account, asume it is needed.
+  # This holds for some up/down-history commands, for example.
+  ((region_highlight_size == 0)) || "$highlight_predicate"
+}
+
+# Whether the command line buffer is modified or not.
+_zsh_highlight_buffer-modified-p() {
+  [[ ${ZSH_PRIOR_HIGHLIGHTED_BUFFER:-} != $BUFFER ]]
+}
+
+# Whether the cursor is moved or not.
+_zsh_highlight_cursor-moved-p() {
+  ((ZSH_PRIOR_CURSOR != $CURSOR))
+}
+
+# Register an highlighter.
+_zsh_highlight_add-highlighter() {
+  zsh_highlight_functions+="$1"
+  zsh_highlight_predicates+="${2-${1}-p}"
+  zsh_highlight_caches+="${3-${1//-/_}}"
+}
+
+
+# -------------------------------------------------------------------------------------------------
+# Main highlighter
+# -------------------------------------------------------------------------------------------------
+
+ZSH_HIGHLIGHT_STYLES+=(
+  default                       'none'
+  unknown-token                 'fg=red,bold'
+  reserved-word                 'fg=yellow'
+  alias                         'fg=green'
+  builtin                       'fg=green'
+  function                      'fg=green'
+  command                       'fg=green'
+  hashed-command                'fg=green'
+  path                          'underline'
+  globbing                      'fg=blue'
+  history-expansion             'fg=blue'
+  single-hyphen-option          'none'
+  double-hyphen-option          'none'
+  back-quoted-argument          'none'
+  single-quoted-argument        'fg=yellow'
+  double-quoted-argument        'fg=yellow'
+  dollar-double-quoted-argument 'fg=cyan'
+  back-double-quoted-argument   'fg=cyan'
+  assign                        'none'
+)
+
+# Tokens that are always immediately followed by a command.
+ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS=(
+  '|' '||' ';' '&' '&&' 'noglob' 'nocorrect' 'builtin'
+)
+
+# Check if the argument is variable assignment
+_zsh_highlight_check-assign() {
+    setopt localoptions extended_glob
+    [[ ${(Q)arg} == [[:alpha:]_]([[:alnum:]_])#=* ]]
+}
+
+# Check if the argument is a path.
+_zsh_highlight_check-path() {
+  [[ -z ${(Q)arg} ]] && return 1
+  [[ -e ${(Q)arg} ]] && return 0
+  [[ ! -e ${(Q)arg:h} ]] && return 1
+  [[ ${#BUFFER} == $end_pos && -n $(print ${(Q)arg}*(N)) ]] && return 0
+  return 1
+}
+
+# Highlight special chars inside double-quoted strings
+_zsh_highlight_highlight_string() {
+  setopt localoptions noksharrays
+  local i j k style
+  # Starting quote is at 1, so start parsing at offset 2 in the string.
+  for (( i = 2 ; i < end_pos - start_pos ; i += 1 )) ; do
+    (( j = i + start_pos - 1 ))
+    (( k = j + 1 ))
+    case "$arg[$i]" in
+      '$')  style=$ZSH_HIGHLIGHT_STYLES[dollar-double-quoted-argument];;
+      "\\") style=$ZSH_HIGHLIGHT_STYLES[back-double-quoted-argument]
+            (( k += 1 )) # Color following char too.
+            (( i += 1 )) # Skip parsing the escaped char.
+            ;;
+      *)    continue;;
+    esac
+    region_highlight+=("$j $k $style")
+  done
+}
+
+# Core syntax highlighting.
+_zsh_main-highlight() {
+  setopt localoptions extendedglob bareglobqual
+  local start_pos=0 end_pos highlight_glob=true new_expression=true arg style
+  region_highlight=()
+  for arg in ${(z)BUFFER}; do
+    local substr_color=0
+    [[ $start_pos -eq 0 && $arg = 'noglob' ]] && highlight_glob=false
+    ((start_pos+=${#BUFFER[$start_pos+1,-1]}-${#${BUFFER[$start_pos+1,-1]##[[:space:]]#}}))
+    ((end_pos=$start_pos+${#arg}))
+    if $new_expression; then
+      new_expression=false
+      res=$(LC_ALL=C builtin type -w $arg 2>/dev/null)
+      case $res in
+        *': reserved')  style=$ZSH_HIGHLIGHT_STYLES[reserved-word];;
+        *': alias')     style=$ZSH_HIGHLIGHT_STYLES[alias]
+                        local aliased_command="${"$(alias $arg)"#*=}"
+                        [[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS:#"$aliased_command"} && -z ${(M)ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS:#"$arg"} ]] && ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS+=($arg)
+                        ;;
+        *': builtin')   style=$ZSH_HIGHLIGHT_STYLES[builtin];;
+        *': function')  style=$ZSH_HIGHLIGHT_STYLES[function];;
+        *': command')   style=$ZSH_HIGHLIGHT_STYLES[command];;
+        *': hashed')    style=$ZSH_HIGHLIGHT_STYLES[hashed-command];;
+        *)              if _zsh_highlight_check-assign; then
+                          style=$ZSH_HIGHLIGHT_STYLES[assign]
+                          new_expression=true
+                        elif _zsh_highlight_check-path; then
+                          style=$ZSH_HIGHLIGHT_STYLES[path]
+                        elif [[ $arg[0,1] = $histchars[0,1] ]]; then
+                          style=$ZSH_HIGHLIGHT_STYLES[history-expansion]
+                        else
+                          style=$ZSH_HIGHLIGHT_STYLES[unknown-token]
+                        fi
+                        ;;
+      esac
+    else
+      case $arg in
+        '--'*)   style=$ZSH_HIGHLIGHT_STYLES[double-hyphen-option];;
+        '-'*)    style=$ZSH_HIGHLIGHT_STYLES[single-hyphen-option];;
+        "'"*"'") style=$ZSH_HIGHLIGHT_STYLES[single-quoted-argument];;
+        '"'*'"') style=$ZSH_HIGHLIGHT_STYLES[double-quoted-argument]
+                 region_highlight+=("$start_pos $end_pos $style")
+                 _zsh_highlight_highlight_string
+                 substr_color=1
+                 ;;
+        '`'*'`') style=$ZSH_HIGHLIGHT_STYLES[back-quoted-argument];;
+        *"*"*)   $highlight_glob && style=$ZSH_HIGHLIGHT_STYLES[globbing] || style=$ZSH_HIGHLIGHT_STYLES[default];;
+        *)       if _zsh_highlight_check-path; then
+                   style=$ZSH_HIGHLIGHT_STYLES[path]
+                 elif [[ $arg[0,1] = $histchars[0,1] ]]; then
+                   style=$ZSH_HIGHLIGHT_STYLES[history-expansion]
+                 else
+                   style=$ZSH_HIGHLIGHT_STYLES[default]
+                 fi
+                 ;;
+      esac
+    fi
+    [[ $substr_color = 0 ]] && region_highlight+=("$start_pos $end_pos $style")
+    [[ -n ${(M)ZSH_HIGHLIGHT_TOKENS_FOLLOWED_BY_COMMANDS:#"$arg"} ]] && new_expression=true
+    start_pos=$end_pos
+  done
+}
+
+
+# -------------------------------------------------------------------------------------------------
+# Setup functions
+# -------------------------------------------------------------------------------------------------
+
+# Intercept specified ZLE events to have highlighting triggered.
+_zsh_highlight_bind-events() {
+
+  # Resolve event names what have to be bound to.
+  zmodload zsh/zleparameter 2>/dev/null || {
+    echo 'zsh-syntax-highlighting:zmodload error. exiting.' >&2
+    return -1
+  }
+  local -a events; : ${(A)events::=${@:#(_*|orig-*|.run-help|.which-command)}}
+
+  # Bind the events to _zsh_highlight-zle-buffer.
+  local clean_event
+  for event in $events; do
+    if [[ "$widgets[$event]" == completion:* ]]; then
+      eval "zle -C orig-$event ${${${widgets[$event]}#*:}/:/ } ; $event() { builtin zle orig-$event && _zsh_highlight-zle-buffer } ; zle -N $event"
+    else
+      case $event in
+        accept-and-menu-complete)
+          eval "$event() { builtin zle .$event && _zsh_highlight-zle-buffer } ; zle -N $event"
+          ;;
+        .*)
+          clean_event=$event[2,${#event}] # Remove the leading dot in the event name
+          case ${widgets[$clean_event]-} in
+            (completion|user):*)
+              ;;
+            *)
+              eval "$clean_event() { builtin zle $event && _zsh_highlight-zle-buffer } ; zle -N $clean_event"
+              ;;
+          esac
+          ;;
+        *)
+          ;;
+      esac
+    fi
+  done
+}
+
+# Load highlighters from specified directory if it exists.
+_zsh_highlight_load-highlighters() {
+  [[ -d $1 ]] && for highlighter_def ($1/*.zsh) . $highlighter_def
+}
+
+
+# -------------------------------------------------------------------------------------------------
+# Setup
+# -------------------------------------------------------------------------------------------------
+
+# Bind highlighting to all known events.
+_zsh_highlight_bind-events "${(@f)"$(zle -la)"}"
+
+# Register the main highlighter.
+_zsh_highlight_add-highlighter _zsh_main-highlight _zsh_highlight_buffer-modified-p
+
+# Load additional highlighters if available.
+_zsh_highlight_load-highlighters "${${(%):-%N}:h}/highlighters"