diff --git a/highlighters/main/test-data/alias-precommand-option-argument1.zsh b/highlighters/main/test-data/alias-precommand-option-argument1.zsh
index 30398a3..2d1f35c 100644
--- a/highlighters/main/test-data/alias-precommand-option-argument1.zsh
+++ b/highlighters/main/test-data/alias-precommand-option-argument1.zsh
@@ -28,6 +28,7 @@
 # vim: ft=zsh sw=2 ts=2 et
 # -------------------------------------------------------------------------------------------------
 
+# See also param-precommand-option-argument1.zsh
 alias sudo_u='sudo -u'
 sudo(){}
 
diff --git a/highlighters/main/test-data/alias-precommand-option-argument3.zsh b/highlighters/main/test-data/alias-precommand-option-argument3.zsh
index 2c78121..373f12b 100644
--- a/highlighters/main/test-data/alias-precommand-option-argument3.zsh
+++ b/highlighters/main/test-data/alias-precommand-option-argument3.zsh
@@ -28,6 +28,7 @@
 # vim: ft=zsh sw=2 ts=2 et
 # -------------------------------------------------------------------------------------------------
 
+# See also param-precommand-option-argument3.zsh
 alias sudo_u='sudo -u'
 sudo(){}
 
diff --git a/highlighters/main/test-data/param-precommand-option-argument1.zsh b/highlighters/main/test-data/param-precommand-option-argument1.zsh
new file mode 100644
index 0000000..fb2ed71
--- /dev/null
+++ b/highlighters/main/test-data/param-precommand-option-argument1.zsh
@@ -0,0 +1,42 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2020 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 also alias-precommand-option-argument1.zsh
+local -a sudo_u=(sudo -u)
+sudo(){}
+
+BUFFER='$sudo_u phy1729 echo foo'
+
+expected_region_highlight=(
+  '1 7 precommand' # $sudo_u
+  '9 15 default "issue #674"' # phy1729
+  '18 20 command "issue #540"' # echo (not builtin)
+  '22 24 default' # foo
+)
diff --git a/highlighters/main/test-data/param-precommand-option-argument3.zsh b/highlighters/main/test-data/param-precommand-option-argument3.zsh
new file mode 100644
index 0000000..4bcfa8a
--- /dev/null
+++ b/highlighters/main/test-data/param-precommand-option-argument3.zsh
@@ -0,0 +1,42 @@
+#!/usr/bin/env zsh
+# -------------------------------------------------------------------------------------------------
+# Copyright (c) 2020 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 also alias-precommand-option-argument3.zsh
+local -a sudo_u=(sudo -u)
+sudo(){}
+
+BUFFER='$sudo_u phy1729 ls foo'
+
+expected_region_highlight=(
+  '1 7 precommand' # sudo_u
+  '9 15 default "issue #674"' # phy1729
+  '17 18 command "issue #674"' # ls
+  '20 22 default' # foo
+)