brackets: Highlight closing ')' of array assignments correctly. (Issue #226.)

Followup to c0dafd1d85, which changed the highlight of
those ')'s from <nothing> to [reserved-word].

highlighters/main/main-highlighter.zsh

@@ -89,6 +89,7 @@ _zsh_highlight_main_highlighter()
   emulate -L zsh
   setopt localoptions extendedglob bareglobqual
   local start_pos=0 end_pos highlight_glob=true arg style
+  local in_array_assignment=false # true between 'a=(' and the matching ')'
   typeset -a ZSH_HIGHLIGHT_TOKENS_COMMANDSEPARATOR
   typeset -a ZSH_HIGHLIGHT_TOKENS_PRECOMMANDS
   typeset -a ZSH_HIGHLIGHT_TOKENS_CONTROL_FLOW
@@ -171,8 +172,11 @@ _zsh_highlight_main_highlighter()
     # the string's color.
     integer already_added=0
     local style_override=""
-    if [[ $this_word == *':start:'* ]] && [[ $arg = 'noglob' ]]; then
-      highlight_glob=false
+    if [[ $this_word == *':start:'* ]]; then
+      in_array_assignment=false
+      if [[ $arg == 'noglob' ]]; then
+        highlight_glob=false
+      fi
     fi
 
     # advance $start_pos, skipping over whitespace in $buf.
@@ -251,7 +255,9 @@ _zsh_highlight_main_highlighter()
         *': hashed')    style=$ZSH_HIGHLIGHT_STYLES[hashed-command];;
         *)              if _zsh_highlight_main_highlighter_check_assign; then
                           style=$ZSH_HIGHLIGHT_STYLES[assign]
-                          if [[ $arg[-1] != '(' ]]; then
+                          if [[ $arg[-1] == '(' ]]; then
+                            in_array_assignment=true
+                          else
                             # assignment to a scalar parameter.
                             # (For array assignments, the command doesn't start until the ")" token.)
                             next_word+=':start:'
@@ -299,7 +305,13 @@ _zsh_highlight_main_highlighter()
      fi
     else # $arg is a non-command word
       case $arg in
-        $'\x29') style=$ZSH_HIGHLIGHT_STYLES[reserved-word];; # subshell
+        $'\x29') # subshell or end of array assignment
+                 if $in_array_assignment; then
+                   style=$ZSH_HIGHLIGHT_STYLES[assign]
+                   in_array_assignment=false
+                 else
+                   style=$ZSH_HIGHLIGHT_STYLES[reserved-word]
+                 fi;;
         $'\x7d') style=$ZSH_HIGHLIGHT_STYLES[reserved-word];; # block
         '--'*)   style=$ZSH_HIGHLIGHT_STYLES[double-hyphen-option];;
         '-'*)    style=$ZSH_HIGHLIGHT_STYLES[single-hyphen-option];;

highlighters/main/test-data/assign-array.zsh

@@ -0,0 +1,38 @@
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2015 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[assign]=$unused_highlight
+BUFFER='(A=(hello world))'
+
+expected_region_highlight=(
+  "1 1 $ZSH_HIGHLIGHT_STYLES[reserved-word]" # (
+  "2 4 $ZSH_HIGHLIGHT_STYLES[assign]" # A=(
+  "16 16 $ZSH_HIGHLIGHT_STYLES[assign]" # )
+  "17 17 $ZSH_HIGHLIGHT_STYLES[reserved-word]" # )
+)

highlighters/main/test-data/assign.zsh

@@ -32,5 +32,7 @@ BUFFER='A=1 b=("foo" bar)'
 
 expected_region_highlight=(
   "1 3 $ZSH_HIGHLIGHT_STYLES[assign]" # A=1
+  "5 7 $ZSH_HIGHLIGHT_STYLES[assign]" # b=(
   "8 12 $ZSH_HIGHLIGHT_STYLES[double-quoted-argument]" # "foo"
+  "17 17 $ZSH_HIGHLIGHT_STYLES[assign]" # )
 )