Ensure to manage eza's options

Append options to EZA_OPTIONS var.
Pass the EZA_OPTIONS var to eza with an `echo`.
Avoid conflict with eza's options.

eza

@@ -46,7 +46,7 @@ readonly COLOR_DEBUG="${PURPLE}"
 usage() {                                                       # {{{
 
 	cat <<- HELP
-usage: $PROGNAME [-d|-h|-u|-s]
+usage: $PROGNAME [--debug|help|--user|--system]
 
 Tiny script to start existing eza (from the system or from user's PATH)
 
@@ -55,22 +55,24 @@ EXAMPLES :
         ${PROGNAME}
 
     - Set different binary for user
-        ${PROGNAME} -u "${HOME}/bin/my.eza"
+        ${PROGNAME} --user "${HOME}/bin/my.eza"
 
 OPTIONS :
-    -d,--debug
+    --debug
         Enable debug messages.
 
-    -h,--help
+    help
         Print this help message.
 
-    -u,--user
+    --user
         Change the user's binary to use.
         (default: ${EZA_USER_PATH})
 
-    -s,--system
+    --system
         Change the system's binary to use.
         (default: ${EZA_SYSTEM_PATH})
+
+    ALL OTHER OPTIONS WILL BE PASSED AS EZA's OPTIONS
 HELP
 }
 # }}}
@@ -155,19 +157,46 @@ main() {                                                        # {{{
 	## If eza system is available {{{
 	### Start it
 	if is_bin_present "${eza_system_path}" "| "; then
-		debug_message "Use Eza from system (${eza_system_path})"
+		### If EZA_OPTIONS is defined, call eza with options {{{
-		"${eza_system_path}" \
+		if [ -n "${EZA_OPTIONS-}" ]; then
+			debug_message "Use Eza from system (${eza_system_path}) with options (${EZA_OPTIONS})."
+			"${eza_system_path}" $(echo "${EZA_OPTIONS}") \
 				|| error_message "Error while calling eza from system path (${eza_system_path})" 11
+		### }}}
+		### If EZA_OPTIONS is NOT defined simply call it {{{
+		elif [ -z "${EZA_OPTIONS-}" ]; then
+			debug_message "Use Eza from system (${eza_system_path}) without options."
+			"${eza_system_path}" \
+				|| error_message "Error while calling eza from system path (${eza_system_path})" 12
+		### }}}
+		### If anything else happens, exit with error {{{
+		else
+			error_message "This test case is not supposed to happen ! Variable EZA_OPTIONS is defined or not." 13
+		fi
+		### }}}
 		debug_message "--- MAIN END"
 		exit 0
 	fi
 	## }}}
   ## If eza from user path is available {{{
-  ### Start it
 	if is_bin_present "${eza_user_path}" "| "; then
-		debug_message "Use Eza from user's path (${eza_user_path})"
+		### If EZA_OPTIONS is defined, call eza with options {{{
+		if [ -n "${EZA_OPTIONS-}" ]; then
+			debug_message "Use Eza from user's path (${eza_user_path}) with options (${EZA_OPTIONS})."
+			"${eza_user_path}" $(echo "${EZA_OPTIONS}") \
+				|| error_message "Error while calling eza from system path (${eza_user_path})" 21
+		### }}}
+		### If EZA_OPTIONS is NOT defined simply call it {{{
+		elif [ -z "${EZA_OPTIONS-}" ]; then
+			debug_message "Use Eza from user's path (${eza_user_path}) without options."
 			"${eza_user_path}" \
-			|| error_message "Error while calling eza from user path (${eza_user_path})" 12
+				|| error_message "Error while calling eza from user path (${eza_user_path})" 22
+		### }}}
+		### If anything else happens, exit with error {{{
+		else
+			error_message "This test case is not supposed to happen ! Variable EZA_OPTIONS is defined or not." 23
+		fi
+		### }}}
 		debug_message "--- MAIN END"
 		exit 0
 	fi
@@ -184,8 +213,8 @@ if [ ! "${NBARGS}" -eq "0" ]; then
 
 	manage_arg="0"
 
-	## If the first argument ask for help (h|help|-h|-help|-*h|-*help) {{{
+	## If the first argument ask for help (h|help) {{{
-	if printf -- '%s' "${1-}" | grep --quiet --extended-regexp -- "^-*h(elp)?$"; then
+	if printf -- '%s' "${1-}" | grep --quiet --extended-regexp -- "^h(elp)?$"; then
 		usage
 		exit 0
 	fi
@@ -206,27 +235,26 @@ if [ ! "${NBARGS}" -eq "0" ]; then
 	while printf -- '%s' "${1-}" | grep --quiet --extended-regexp -- "^-+"; do
 
 		case "${1}" in
-			-d|--debug )                          ## debug
+			--debug )                             ## debug
 				DEBUG=0
 				debug_message "--- Manage argument BEGIN"
 				;;
-			-u|--user )                           ## Define eza_user_path with given arg
+			--user )                              ## Define eza_user_path with given arg
 				## Move to the next argument
 				shift
 				## Define var
 				readonly eza_user_path="${1}"
 				;;
-			-s|--system )                         ## Define eza_system_path with given arg
+			--system )                            ## Define eza_system_path with given arg
 				## Move to the next argument
 				shift
 				## Define var
 				readonly eza_system_path="${1}"
 				;;
 			* )                                   ## unknow option
-				printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
+				debug_message "Unknown option (${1}), pass it as eza's option"
-				printf '%b\n' "---"
+				test -n "${EZA_OPTIONS-}" && EZA_OPTIONS="${EZA_OPTIONS} ${1}"
-				usage
+				test -z "${EZA_OPTIONS-}" && EZA_OPTIONS="${1}"
-				exit 1
 				;;
 		esac