From 7f41967a17d0620dfd10617c3bc0dfb48e4cbb34 Mon Sep 17 00:00:00 2001
From: Daniel Shahaf <d.s@daniel.shahaf.name>
Date: Sat, 5 Sep 2015 09:38:02 +0000
Subject: [PATCH] Highlight array appends: foo+=(bar baz).

Fixes zsh-users/zsh-syntax-highlighting#181.
---
 highlighters/main/main-highlighter.zsh        |  2 +-
 highlighters/main/test-data/assign-append.zsh | 35 +++++++++++++++++++
 2 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 highlighters/main/test-data/assign-append.zsh

diff --git a/highlighters/main/main-highlighter.zsh b/highlighters/main/main-highlighter.zsh
index 975df35..540442c 100755
--- a/highlighters/main/main-highlighter.zsh
+++ b/highlighters/main/main-highlighter.zsh
@@ -218,7 +218,7 @@ _zsh_highlight_main_highlighter()
 _zsh_highlight_main_highlighter_check_assign()
 {
     setopt localoptions extended_glob
-    [[ $arg == [[:alpha:]_][[:alnum:]_]#(|\[*\])=* ]]
+    [[ $arg == [[:alpha:]_][[:alnum:]_]#(|\[*\])(|[+])=* ]]
 }
 
 # Check if the argument is a path.
diff --git a/highlighters/main/test-data/assign-append.zsh b/highlighters/main/test-data/assign-append.zsh
new file mode 100644
index 0000000..29e759a
--- /dev/null
+++ b/highlighters/main/test-data/assign-append.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='a+=(lorem ipsum)'
+
+expected_region_highlight=(
+  "1 4 $ZSH_HIGHLIGHT_STYLES[assign]" # a+=(
+)