bash: Treat cli_extra_args as an array

The proper way to treat the contents of $@ when assigned is as an array.
Relying on IFS of a <space> is not robust. See the link for further
information.

Link: https://www.shellcheck.net/wiki/SC2086
Signed-off-by: Mark Grant <[email protected]>
(cherry picked from commit 5f3a801)
Signed-off-by: Mark Grant <[email protected]>

src/prg/bash/agmaint.sh.in

@@ -82,17 +82,18 @@
 #				apt-get commands.			#
 # 22/11/2021	MG	1.1.3	Tighten SPDX tag.			#
 # 26/06/2023	MG	1.1.4	Fix shellcheck warnings.		#
+# 10/07/2023	MG	1.1.5	Treat cli_extra_args as an array.	#
 #									#
 #########################################################################
 
 
 ##################
 # Init variables #
 ##################
-readonly version=1.1.4				# Script version
+readonly version=1.1.5				# Script version
 readonly packageversion=@pkgversion@		# Package version
 
-cli_extra_args=""
+cli_extra_args=()
 
 
 #############
@@ -202,7 +203,7 @@ proc_CL()
 		# bash concatenates with a space, fine for later word splitting
 		# on command line.
 		# shellcheck disable=SC2124
-		cli_extra_args=$@
+		cli_extra_args=( "$@" )
 	fi
 }
 
@@ -213,26 +214,22 @@ proc_CL()
 
 proc_CL "$@"
 
-# shellcheck disable=SC2086 # Word splitting on space is required.
-apt-get $cli_extra_args upgrade
+apt-get "${cli_extra_args[@]}" upgrade
 status=$?
 output "apt-get upgrade completed with exit code: "$status $status
 std_cmd_err_handler $status
 
-# shellcheck disable=SC2086 # Word splitting on space is required.
-apt-get $cli_extra_args autoclean
+apt-get "${cli_extra_args[@]}" autoclean
 status=$?
 output "apt-get autoclean completed with exit code: "$status $status
 std_cmd_err_handler $status
 
-# shellcheck disable=SC2086 # Word splitting on space is required.
-apt-get $cli_extra_args check
+apt-get "${cli_extra_args[@]}" check
 status=$?
 output "apt-get check completed with exit code: "$status $status
 std_cmd_err_handler $status
 
-# shellcheck disable=SC2086 # Word splitting on space is required.
-apt-get $cli_extra_args autoremove
+apt-get "${cli_extra_args[@]}" autoremove
 status=$?
 output "apt-get autoremove completed with exit code: "$status $status
 std_cmd_err_handler $status