'main': Fix highlighting of «<->»-style numeric globs.

Found-by: Matthew Martin

Author: danielshahaf

highlighters/main/main-highlighter.zsh

@@ -173,7 +173,8 @@ _zsh_highlight_main__is_redirection() {
   # - starts with an optional single-digit number;
   # - then, has a '<' or '>' character;
   # - is not a process substitution [<(...) or >(...)].
-  [[ $1 == (<0-9>|)(\<|\>)* ]] && [[ $1 != (\<|\>)$'\x28'* ]]
+  # - is not a numeric glob <->
+  [[ $1 == (<0-9>|)(\<|\>)* ]] && [[ $1 != (\<|\>)$'\x28'* ]] && [[ $1 != *'<'*'-'*'>'* ]]
 }
 
 # Resolve alias.
@@ -820,7 +821,8 @@ _zsh_highlight_main_highlighter_highlight_argument()
         elif [[ $arg[i+1] == [*@#?-$!] ]]; then
           (( i += 1 ))
         fi;;
-      [*?])
+      [*?]|\<)
+	# The '<' is for the <-> globbing syntax.  (This function doesn't get called on redirection tokens.)
         if $highlight_glob; then
           _zsh_highlight_main_add_region_highlight $start_pos $end_pos globbing
           path_eligible=0

highlighters/main/test-data/number_range-glob.zsh

@@ -0,0 +1,40 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2017 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='print <-> x<-> <foo2-3>'
+
+expected_region_highlight=(
+  '1 5 builtin' # print
+  '7 9 globbing' # <->
+  '11 14 globbing' # x<->
+  '16 16 redirection' # <
+  '17 22 default' # foo2-3 (the filename)
+  '23 23 redirection' # >
+)