diff -ur genkernel/gen_determineargs.sh genkernel.new/gen_determineargs.sh
--- genkernel/gen_determineargs.sh	2014-12-10 13:23:25.247134189 -0600
+++ genkernel.new/gen_determineargs.sh	2014-12-10 13:32:45.782485131 -0600
@@ -2,7 +2,7 @@
 # $Id: dc6b2c4d993280a079ed58f28c3b67b870c7e48e $
 
 get_KV() {
-	if [ "${KERNEL_SOURCES}" = '0' -a -e "${KERNCACHE}" ]
+	if isTrue ${KERNEL_SOURCES} && [ -e "${KERNCACHE}" ]
 	then
 		/bin/tar -xj -C ${TEMP} -f ${KERNCACHE} kerncache.config
 		if [ -e ${TEMP}/kerncache.config ]
@@ -175,7 +175,7 @@
 		fi
 	fi
 
-	if [ "${KERNEL_SOURCES}" != "0" ]
+	if isTrue "${KERNEL_SOURCES}"
 	then
 		if [ ! -d ${KERNEL_DIR} ]
 		then
@@ -185,11 +185,11 @@
 
 	if [ -z "${KERNCACHE}" ]
 	then
-		if [ "${KERNEL_DIR}" = '' -a "${KERNEL_SOURCES}" != "0" ]
+		if [ "${KERNEL_DIR}" = '' ] && isTrue "${KERNEL_SOURCES}"
 		then
 			gen_die 'No kernel source directory!'
 		fi
-		if [ ! -e "${KERNEL_DIR}" -a "${KERNEL_SOURCES}" != "0" ]
+		if [ ! -e "${KERNEL_DIR}" ] $$ isTrue "${KERNEL_SOURCES}"
 		then
 			gen_die 'No kernel source directory!'
 		fi
diff -ur genkernel/gen_funcs.sh genkernel.new/gen_funcs.sh
--- genkernel/gen_funcs.sh	2014-12-10 13:23:25.600132507 -0600
+++ genkernel.new/gen_funcs.sh	2014-12-10 13:54:10.663339566 -0600
@@ -299,7 +299,7 @@
 	# Old product might be a different version.  If so, we need to read
 	# the symlink to see what it's name is, if there are symlinks.
 	cd ${KERNEL_OUTPUTDIR}
-	if [ "${SYMLINK}" = '1' ]
+	if isTrue "${SYMLINK}"
 	then
  		print_info 4 "automatically managing symlinks and old images." 1 0
 		if [ -e "${BOOTDIR}/${symlinkName}" ]
@@ -345,7 +345,7 @@
 
 	# When symlinks are not being managed by genkernel, old symlinks might
     # still be useful.  Leave 'em alone unless managed.
-	if [ "${SYMLINK}" = '1' ]
+	if isTrue "${SYMLINK}"
 	then
 		print_info 5 "  Deleting old symlinks, if any."
 		rm -f "${BOOTDIR}/${symlinkName}"
@@ -391,7 +391,7 @@
 	cp "${newSrceImage}" "${BOOTDIR}/${currDestImage}" ||
 	    gen_die "Could not copy the ${symlinkName} image to ${BOOTDIR}!"
 
-	if [ "${SYMLINK}" = '1' ]
+	if isTrue "${SYMLINK}"
 	then
 		print_info 5 "  Make new symlink(s) (from ${BOOTDIR}):"
 		print_info 5 "    ${symlinkName} -> ${currDestImage}"
diff -ur genkernel/gen_initramfs.sh genkernel.new/gen_initramfs.sh
--- genkernel/gen_initramfs.sh	2014-12-10 13:23:25.557132712 -0600
+++ genkernel.new/gen_initramfs.sh	2014-12-10 14:33:21.644968914 -0600
@@ -179,7 +179,7 @@
 	cd ${TEMP}
 	mkdir -p "${TEMP}/initramfs-blkid-temp/"
 
-	if [[ "${DISKLABEL}" = "1" ]]; then
+	if isTrue "${DISKLABEL}"; then
 		copy_binaries "${TEMP}"/initramfs-blkid-temp/ /sbin/blkid
 	fi
 
@@ -395,7 +395,7 @@
 	cd ${TEMP}
 	mkdir -p "${TEMP}/initramfs-mdadm-temp/etc/"
 	mkdir -p "${TEMP}/initramfs-mdadm-temp/sbin/"
-	if [ "${MDADM}" = '1' ]
+	if isTrue "${MDADM}"
 	then
 		if [ -n "${MDADM_CONFIG}" ]
 		then
@@ -807,7 +807,7 @@
 	append_data 'multipath' "${MULTIPATH}"
 	append_data 'gpg' "${GPG}"
 
-	if [ "${RAMDISKMODULES}" = '1' ]
+	if isTrue "${RAMDISKMODULES}"
 	then
 		append_data 'modules'
 	else
diff -ur genkernel/genkernel genkernel.new/genkernel
--- genkernel/genkernel	2014-12-10 13:23:25.249134180 -0600
+++ genkernel.new/genkernel	2014-12-10 13:59:34.707736435 -0600
@@ -237,12 +237,12 @@
 	compile_kernel
 
 	# Compile modules
-	if [ "${BUILD_MODULES}" = '1' -a "${BUILD_STATIC}" = '0' ]
+	if [ "${BUILD_MODULES}" = '1' ] && isTrue "${BUILD_STATIC}"
 	then
 		compile_modules
 	fi
 
-	if [ "${SAVE_CONFIG}" = '1' ]
+	if isTrue "${SAVE_CONFIG}"
 	then
 		print_info 1 "Copying config for successful build to /etc/kernels/kernel-config-${ARCH}-${KV}"
 		[ ! -e '/etc/kernels' ] && mkdir -p /etc/kernels
@@ -262,7 +262,7 @@
 
 if [ "${KERNCACHE}" != "" -a "${KERNCACHE_IS_VALID}" != "0" ]
 then
-	[ "${BUILD_STATIC}" = '0' ] && gen_kerncache_extract_modules
+	isTrue "${BUILD_STATIC}" && gen_kerncache_extract_modules
 	gen_kerncache_extract_config
 fi
 
@@ -301,7 +301,7 @@
 
 if [ "${BUILD_RAMDISK}" = '1' ]
 then
-	if [ "${BUSYBOX}" = '1' ]
+	if isTrue "${BUSYBOX}"
 	then
 		# Compile Busybox
 		compile_busybox
@@ -363,14 +363,14 @@
 	echo
 	print_warning 1 'WARNING... WARNING... WARNING...'
 	print_warning 1 'Additional kernel cmdline arguments that *may* be required to boot properly...'
-	[ "${SPLASH}" = '1' ] && print_warning 1 "add \"vga=791 splash=silent,theme:${SPLASH_THEME} console=tty1 quiet\" if you use a splash framebuffer ]"
-	[ "${LVM}" = '1' ] && print_warning 1 'add "dolvm" for lvm support'
-	[ "${DMRAID}" = '1' ] && print_warning 1 'add "dodmraid" for dmraid support'
-	[ "${MDADM}" = '1' ] && print_warning 1 'add "domdadm" for RAID support'
-	[ "${DMRAID}" = '1' ] && print_warning 1 '	or "dodmraid=<additional options>"'
-	[ "${ZFS}" = '1' ] && print_warning 1 'add "dozfs" for ZFS volume management support'
-	[ "${ZFS}" = '1' ] && print_warning 1 '	and either "root=ZFS" to use bootfs autodetection or "root=ZFS=<dataset>" to force booting from a specific dataset'
-	[ "${ISCSI}" = '1' ] && print_warning 1 'add at least "iscsi_initiatorname=<initiator name> iscsi_target=<target name> and iscsi_address=<target ip>" for iscsi support'
+	isTrue "${SPLASH}" && print_warning 1 "add \"vga=791 splash=silent,theme:${SPLASH_THEME} console=tty1 quiet\" if you use a splash framebuffer ]"
+	isTrue "${LVM}" && print_warning 1 'add "dolvm" for lvm support'
+	isTrue "${DMRAID}" && print_warning 1 'add "dodmraid" for dmraid support'
+	isTrue "${MDADM}" && print_warning 1 'add "domdadm" for RAID support'
+	isTrue "${DMRAID}" && print_warning 1 '	or "dodmraid=<additional options>"'
+	isTrue "${ZFS}" && print_warning 1 'add "dozfs" for ZFS volume management support'
+	isTrue "${ZFS}" && print_warning 1 '	and either "root=ZFS" to use bootfs autodetection or "root=ZFS=<dataset>" to force booting from a specific dataset'
+	isTrue "${ISCSI}" && print_warning 1 'add at least "iscsi_initiatorname=<initiator name> iscsi_target=<target name> and iscsi_address=<target ip>" for iscsi support'
 
 	if [[ "$(file --brief --mime-type "${KERNEL_CONFIG}")" == application/x-gzip ]]; then
 		# Support --kernel-config=/proc/config.gz, mainly
diff -ur genkernel/gen_moddeps.sh genkernel.new/gen_moddeps.sh
--- genkernel/gen_moddeps.sh	2014-12-10 13:23:25.347133713 -0600
+++ genkernel.new/gen_moddeps.sh	2014-12-10 13:44:57.182031178 -0600
@@ -56,7 +56,7 @@
 
 gen_dep_list()
 {
-	if [ "${ALLRAMDISKMODULES}" = "1" ]; then
+	if isTrue "${ALLRAMDISKMODULES}"; then
 		strip_mod_paths $(find "${INSTALL_MOD_PATH}/lib/modules/${KV}" -name "*$(modules_kext)") | sort
 	else
 		local group_modules