'main': Support vi linewise region (REGION_ACTIVE == 2).

Merge remote-tracking branch 'danielshahaf/i267-linewise-region-v1'

* danielsh/i267-linewise-region-v1:
  tests: Add a regression test for issue #267, concerning highlighting a vi linewise region.
  Support linewise region.

highlighters/main/test-data/vi-linewise-mode.zsh

@@ -0,0 +1,38 @@
+# -------------------------------------------------------------------------------------------------
+# 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
+# -------------------------------------------------------------------------------------------------
+
+# See issue #267 for the magic numbers
+BUFFER=$'foo foo\nbar bar'
+REGION_ACTIVE=2
+CURSOR=4
+MARK=12
+
+expected_region_highlight=(
+  "1 3 standout" # foo
+)

zsh-syntax-highlighting.zsh

@@ -111,7 +111,22 @@ _zsh_highlight()
     # Re-apply zle_highlight settings
 
     # region
-    (( REGION_ACTIVE )) && _zsh_highlight_apply_zle_highlight region standout "$MARK" "$CURSOR"
+    if (( REGION_ACTIVE == 1 )); then
+      _zsh_highlight_apply_zle_highlight region standout "$MARK" "$CURSOR"
+    elif (( REGION_ACTIVE == 2 )); then
+      () {
+        local needle=$'\n'
+        integer min max
+        if (( MARK > CURSOR )) ; then
+          min=$CURSOR max=$MARK
+        else
+          min=$MARK max=$CURSOR
+        fi
+        (( min = ${${BUFFER[1,$min]}[(I)$needle]} ))
+        (( max += ${${BUFFER:($max-1)}[(i)$needle]} - 1 ))
+        _zsh_highlight_apply_zle_highlight region standout "$min" "$max"
+      }
+    fi
 
     # yank / paste (zsh-5.1.1 and newer)
     (( $+YANK_ACTIVE )) && (( YANK_ACTIVE )) && _zsh_highlight_apply_zle_highlight paste standout "$YANK_START" "$YANK_END"