improve comments for shellcheck

init

@@ -80,8 +80,9 @@ run_hook() {
 	local _HOOK
 	local _HOOKTYPE="$1"
 
+	# Intentional: "can't follow non-constant source".
 	# https://www.shellcheck.net/wiki/SC1090
-	# shellcheck disable=1090
+	# shellcheck disable=SC1090
 	for _HOOK in $hooks; do
 		if [ -f "/usr/share/mkinitramfs/hooks/$_HOOK/$_HOOK.$_TYPE" ]; then
 			. "/usr/share/mkinitramfs/hooks/$_HOOK/$_HOOK.$_TYPE"
@@ -137,8 +138,9 @@ mount_root() {
 
   resolve_device "$root" "${root_wait:-$rootdelay}"
 
+  # Intentional word splitting.
   # https://www.shellcheck.net/wiki/SC2086
-  # shellcheck disable=2086
+  # shellcheck disable=SC2086
   mount \
     -o "${rorw:-ro}${root_opts:+,$root_opts}"  \
     ${root_type:+-t $root_type} \
@@ -168,9 +170,10 @@ boot_system() {
 	# Some implementations of 'switch_root' doesn't conform to
 	# POSIX utility guidelines and doesn't support '--'.  This
 	# means that safety of init_args isn't guaranteed.
-	#
+
+	# Intentional word splitting.
 	# https://shellcheck.net/wiki/SC2086
-	# shellcheck disable=2086
+	# shellcheck disable=SC2086
 	exec env -i TERM=linux PATH=/bin:/sbin:/usr/bin:/usr/sbin \
 		switch_root /mnt/root \
 		"${init-/sbin/init}" $init_args ||
@@ -188,7 +191,7 @@ trap panic EXIT
 
 # Read configuration.
 # https://www.shellcheck.net/wiki/SC1091
-# shellcheck disable=1091
+# shellcheck disable=SC1091
 . /etc/mkinitramfs/config
 
 # Run init helpers.

mkinitramfs.in

@@ -4,7 +4,7 @@
 
 # Intentional: "var is referenced but not assigned".
 # https://www.shellcheck.net/wiki/SC2154
-# shellcheck disable=2154
+# shellcheck disable=SC2154
 
 # Intentional: allow "local"s declaration.a
 # https://www.shellcheck.net/wiki/SC3043
@@ -35,14 +35,14 @@ error() {
 # trap(1p) for more information.
 
 # https://www.shellcheck.net/wiki/SC2317
-# shellcheck disable=2317
+# shellcheck disable=SC2317
 interrupted() {
 	echo ""         1>&2
 	info "Aborted." 1>&2
 	exit 1
 }
 
-# shellcheck disable=2317
+# shellcheck disable=SC2317
 atexit() {
 	# clean up after ourselves
 	if [ -d "$MKINITRAMFS_WORK_DIR" ]; then
@@ -96,7 +96,7 @@ copy_file() {
 	chmod "$_MODE" "$MKINITRAMFS_WORK_DIR/$_DEST"
 
 	# https://www.shellcheck.net/wiki/SC2015
-	# shellcheck disable=2015
+	# shellcheck disable=SC2015
 	if [ "$_STRIP" = 1 ]; then
 		strip "$MKINITRAMFS_WORK_DIR/$_DEST" >/dev/null 2>&1 || :
 	fi
@@ -115,9 +115,10 @@ copy_binary() {
 	# empty            -> do panic
 	# external command -> do nothing
 	# builtin command  -> try to find external alternative
-	#
+
+	# Intentional word splitting.
 	# https://www.shellcheck.net/wiki/SC2086
-	# shellcheck disable=2086
+	# shellcheck disable=SC2086
 	case "$_BIN" in
 	*/*)
 		;;
@@ -246,8 +247,9 @@ process_hooks() {
 
 		# Run build-time hook.
 		echo "+ $_HOOK"
+		# Intentional: "can't follow non-constant source".
 		# https://www.shellcheck.net/wiki/SC1090
-		# shellcheck disable=1090
+		# shellcheck disable=SC1090
 		. "$_HOOKS_DIR/$_HOOK/$_HOOK"
 
 		# Copy init-time hooks.
@@ -317,8 +319,10 @@ copy_kernmodules() {
 			"$KERNEL_MOD_DIR/$KERNEL_VERSION/kernel/drivers/usb/storage"  \
 			-type f 2>/dev/null |
 				while read -r _MOD || [ "$_MOD" ]; do
-					# Intentional.
-					# shellcheck disable=2295
+					# Intentional pattern
+					# matching.
+					# https://www.shellcheck.net/wiki/SC2295
+					# shellcheck disable=SC2295
 					copy_file "$_MOD" "/lib/modules/${_MOD#$KERNEL_MOD_DIR}" 644 0
 				done
 	fi
@@ -401,9 +405,9 @@ main() {
 
 	# Read configuration.
 	if [ -f "$MKINITRAMFS_CONF" ]; then
-		# Intentional.
+		# Intentional: "can't follow non-constant source".
 		# https://www.shellcheck.net/wiki/SC1090
-		# shellcheck disable=1090
+		# shellcheck disable=SC1090
 		. "$MKINITRAMFS_CONF"
 	else
 		error "Missing configuration file '$MKINITRAMFS_CONF'"