'main': Highlight mismatched do/done.

highlighters/main/main-highlighter.zsh

@@ -214,7 +214,11 @@ _zsh_highlight_highlighter_main_paint()
   integer len="${#buf}"
   integer pure_buf_len=$(( len - ${#PREBUFFER} ))   # == $#BUFFER, used e.g. in *_check_path
 
-  local braces_stack # "R" for round, "Q" for square, "Y" for curly
+  # "R" for round
+  # "Q" for square
+  # "Y" for curly
+  # "D" for do/done
+  local braces_stack
 
   if (( path_dirs_was_set )); then
     options_to_set+=( PATH_DIRS )
@@ -447,15 +451,24 @@ _zsh_highlight_highlighter_main_paint()
       case $res in
         reserved)       # reserved word
                         style=reserved-word
-                        if [[ $arg == $'\x7b' ]]; then
+                        case $arg in
-                          braces_stack='Y'"$braces_stack"
+                          ($'\x7b')
-                        elif [[ $arg == $'\x7d' ]]; then
+                            braces_stack='Y'"$braces_stack"
-                          # We're at command word, so no need to check $right_brace_is_recognised_everywhere
+                            ;;
-                          _zsh_highlight_main__stack_pop 'Y' style=reserved-word
+                          ($'\x7d')
-                          if [[ $style == reserved-word ]]; then
+                            # We're at command word, so no need to check $right_brace_is_recognised_everywhere
-                            next_word+=':always:'
+                            _zsh_highlight_main__stack_pop 'Y' style=reserved-word
-                          fi
+                            if [[ $style == reserved-word ]]; then
-                        fi
+                              next_word+=':always:'
+                            fi
+                            ;;
+                          ('do')
+                            braces_stack='D'"$braces_stack"
+                            ;;
+                          ('done')
+                            _zsh_highlight_main__stack_pop 'D' style=reserved-word
+                            ;;
+                        esac
                         ;;
         'suffix alias') style=suffix-alias;;
         alias)          () {

highlighters/main/test-data/brackets-mismatch6.zsh

@@ -0,0 +1,40 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2016 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='(repeat 1; do)'
+
+expected_region_highlight=(
+  '1 1 reserved-word' # (
+  '2 7 reserved-word' # repeat
+  '9 9 default' # 1
+  '10 10 commandseparator' # ;
+  '12 13 reserved-word' # do
+  '14 14 unknown-token' # )
+)