diff --git a/build b/build
index 5698bd7..b38c711 100755
--- a/build
+++ b/build
@@ -25,7 +25,7 @@ main()
 
 	for g in "which git" "git config --global user.name" \
 	    "git config --global user.email" "git_init"; do
-		eval "$g 1>/dev/null 2>/dev/null || git_err \"$g\""
+		eval "$g 1>/dev/null 2>/dev/null || $err \"Unconfigured: $g\""
 	done
 
 	case "${spath#script/}" in
@@ -33,14 +33,13 @@ main()
 	release) shift 1; mkrelease $@ ;;
 	roms)
 		if [ $# -gt 1 ] && [ "$2" = "serprog" ]; then
-			x_ ./update trees -b stm32-vserprog
-			x_ ./update trees -b pico-serprog; return 0
+			x_ ./mk -b stm32-vserprog
+			x_ ./mk -b pico-serprog; return 0
 		fi; shift 1
-		x_ ./update trees -b coreboot $@ ;;
+		x_ ./mk -b coreboot $@ ;;
 	*)
-		echo "'$@'"
 		[ -f "$spath" ] || $err "bad command"
-		$shcmd; "$spath" $@ || $err "excmd: $spath $@" ;;
+		$shcmd; "$spath" $@ || $err "excmd: $spath $(echo "$@")" ;;
 	esac
 }
 
@@ -57,12 +56,6 @@ git_init()
 	git tag -a "$version" -m "$projectname $version" || return 1
 }
 
-git_err()
-{
-	printf "You need to set git name/email, like so:\n%s\n\n" "$1" 1>&2
-	$err "Git name/email not configured"
-}
-
 mkrelease()
 {
 	export XBMK_RELEASE="y"
@@ -95,9 +88,7 @@ build_release()
 {
 	(
 	cd "$srcdir" || $err "$vdir: !cd \"$srcdir\""
-	./update trees -f
-	rmgit .
-	x_ rm -Rf tmp
+	./mk -f; x_ rm -Rf tmp; rmgit .
 	x_ mv src/docs docs
 	) || $err "can't create release files"
 
@@ -112,12 +103,11 @@ build_release()
 	[ "$mode" = "src" ] && return 0
 
 	touch "$srcdir/lock" || $err "can't make lock file in $srcdir/"
-
 	(
 	cd "$srcdir" || $err "$vdir: 2 !cd \"$srcdir\""
-	./update trees -b coreboot || $err "$vdir: roms-all"
-	./update trees -b pico-serprog || $err "$vdir: rp2040"
-	./update trees -b stm32-vserprog || $err "$vdir: stm32"
+	./mk -b coreboot || $err "$vdir: roms-all"
+	./mk -b pico-serprog || $err "$vdir: rp2040"
+	./mk -b stm32-vserprog || $err "$vdir: stm32"
 	x_ mv bin ../roms
 	) || $err "can't build rom images"
 
diff --git a/include/git.sh b/include/git.sh
index f8441f3..8c86b4c 100644
--- a/include/git.sh
+++ b/include/git.sh
@@ -8,7 +8,7 @@ eval `setvars "" loc url bkup_url subfile subhash subrepo subrepo_bkup \
 fetch_targets()
 {
 	[ -n "$tree_depend" ] && [ "$tree_depend" != "$tree" ] && \
-		x_ ./update trees -f "$project" "$tree_depend"
+		x_ ./mk -f "$project" "$tree_depend"
 	e "src/$project/$tree" d && return 0
 
 	printf "Creating %s tree %s\n" "$project" "$tree"
@@ -23,10 +23,10 @@ fetch_project()
 
 	chkvars url
 
-	[ -n "$xtree" ] && x_ ./update trees -f coreboot "$xtree"
+	[ -n "$xtree" ] && x_ ./mk -f coreboot "$xtree"
 	[ -z "$depend" ] || for d in $depend ; do
 		printf "'%s' needs '%s'; grabbing '%s'\n" "$project" "$d" "$d"
-		x_ ./update trees -f $d
+		x_ ./mk -f $d
 	done
 	clone_project
 
@@ -39,32 +39,24 @@ clone_project()
 {
 	loc="$XBMK_CACHE/repo/$project" && singletree "$project" && \
 	    loc="src/$project"
-
 	printf "Downloading project '%s' to '%s'\n" "$project" "$loc"
-	e "$loc" d && return 0
 
-	remkdir "${tmpgit%/*}"
-	git_prep "$url" "$bkup_url" "$PWD/config/$project/patches" "$loc"
+	e "$loc" d missing && remkdir "${tmpgit%/*}" && git_prep \
+	    "$url" "$bkup_url" "$PWD/config/$project/patches" "$loc"; :
 }
 
 git_prep()
 {
-	_patchdir="$3" # $1 and $2 are gitrepo and gitrepo_backup
-	_loc="$4"
+	_patchdir="$3"; _loc="$4" # $1 and $2 are gitrepo and gitrepo_backup
 
-	chkvars rev
-
-	tmpclone "$1" "$2" "$tmpgit" "$rev" "$_patchdir"
+	chkvars rev; tmpclone "$1" "$2" "$tmpgit" "$rev" "$_patchdir"
 	if singletree "$project" || [ $# -gt 4 ]; then
-		prep_submodules "$_loc"
-	fi
+		prep_submodules "$_loc"; fi
 
 	[ "$project" = "coreboot" ] && [ -n "$xtree" ] && [ $# -gt 2 ] && \
 	    [ "$xtree" != "$tree" ] && link_crossgcc "$_loc"
-
 	[ "$XBMK_RELEASE" = "y" ] && \
-	    [ "$_loc" != "$XBMK_CACHE/repo/$project" ] && \
-		rmgit "$tmpgit"
+	    [ "$_loc" != "$XBMK_CACHE/repo/$project" ] && rmgit "$tmpgit"
 
 	move_repo "$_loc"
 }
@@ -87,7 +79,6 @@ fetch_submodule()
 		_seval="if [ -n \"\$sub$xt\" ] || [ -n \"\$sub${xt}_bkup\" ]"
 		eval "$_seval; then st=\"\$st \$xt\"; fi"
 	done
-
 	st="${st# }" && [ "$st" = "repo file" ] && $err "$mdir: repo+file"
 
 	[ -z "$st" ] && return 0 # subrepo/subfile not defined
@@ -103,12 +94,12 @@ fetch_submodule()
 tmpclone()
 {
 	[ "$repofail" = "y" ] && \
-	    printf "Cached clone failed; trying online.\n" 1>&2
-	repofail="n"
+	    printf "Cached clone failed; trying online.\n" 1>&2; repofail="n"
 
 	[ $# -lt 6 ] || rm -Rf "$3" || $err "git retry: !rm $3 ($1)"
 	repodir="$XBMK_CACHE/repo/${1##*/}" && [ $# -gt 5 ] && repodir="$3"
 	mkdir -p "$XBMK_CACHE/repo" || $err "!rmdir $XBMK_CACHE/repo"
+
 	if [ -d "$repodir" ] && [ $# -lt 6 ]; then
 		git -C "$repodir" pull || sleep 3 || git -C "$repodir" pull \
 		    || sleep 3 || git -C "$repodir" pull || :
diff --git a/include/lib.sh b/include/lib.sh
index 2cd8c0d..586ecde 100644
--- a/include/lib.sh
+++ b/include/lib.sh
@@ -7,8 +7,6 @@ export LC_COLLATE=C
 export LC_ALL=C
 
 _ua="Mozilla/5.0 (Windows NT 10.0; rv:91.0) Gecko/20100101 Firefox/91.0"
-kbnotice="Insert a .gkb file from config/data/grub/keymap/ as keymap.gkb \
-if you want a custom keymap in GRUB; use cbfstool from elf/cbfstool."
 
 ifdtool="elf/ifdtool/default/ifdtool"
 cbfstool="elf/cbfstool/default/cbfstool"
@@ -58,8 +56,7 @@ e()
 	estr="[ -$es_t \"\$1\" ] || return 1"
 	[ $# -gt 2 ] && estr="[ -$es_t \"\$1\" ] && return 1" && es2="missing"
 
-	eval "$estr"
-	printf "%s %s\n" "$1" "$es2" 1>&2
+	eval "$estr"; printf "%s %s\n" "$1" "$es2" 1>&2
 }
 
 install_packages()
@@ -121,8 +118,7 @@ versiondate_="$versiondate"
 [ ! -e ".git" ] || versiondate="$(git show --no-patch --no-notes \
     --pretty='%ct' HEAD)" || versiondate="$versiondate_"
 for p in projectname version versiondate projectsite; do
-	chkvars "$p"
-	eval "x_ printf \"%s\\n\" \"\$$p\" > $p"
+	chkvars "$p"; eval "x_ printf \"%s\\n\" \"\$$p\" > $p"
 done
 relname="$projectname-$version"
 export LOCALVERSION="-$projectname-${version%%-*}"
@@ -147,8 +143,7 @@ mkrom_tarball()
 	printf "%s\n" "$versiondate" > "$1/versiondate" || $err "$1 !vdate"
 	printf "%s\n" "$projectname" > "$1/projectname" || $err "$1 !pname"
 
-	mktarball "$1" "${1%/*}/${relname}_${1##*/}.tar.xz"
-	x_ rm -Rf "$1"
+	mktarball "$1" "${1%/*}/${relname}_${1##*/}.tar.xz"; x_ rm -Rf "$1"; :
 }
 
 mktarball()
@@ -182,7 +177,7 @@ rmgit()
 singletree()
 {
 	for targetfile in "config/${1}/"*/target.cfg; do
-		[ -e "$targetfile" ] && [ -f "$targetfile" ] && return 1
+		[ -e "$targetfile" ] && [ -f "$targetfile" ] && return 1; :
 	done; return 0
 }
 
@@ -208,8 +203,7 @@ download()
 vendor_checksum()
 {
 	[ "$(sha512sum "$2" | awk '{print $1}')" != "$1" ] || return 1
-	printf "Bad checksum for file: %s\n" "$2" 1>&2
-	rm -f "$2" || :
+	printf "Bad checksum for file: %s\n" "$2" 1>&2; rm -f "$2" || :; :
 }
 
 cbfs()
diff --git a/include/rom.sh b/include/rom.sh
index 23974c3..718f6c3 100644
--- a/include/rom.sh
+++ b/include/rom.sh
@@ -28,10 +28,8 @@ mkpayload_grub()
 {
 	eval `setvars "" grub_modules grub_install_modules`
 	$dry eval `setcfg "$grubdata/module/$tree"`
-
-	$dry x_ rm -f "$srcdir/grub.elf"
-
-	$dry "$srcdir/grub-mkstandalone" --grub-mkimage="$srcdir/grub-mkimage" \
+	$dry x_ rm -f "$srcdir/grub.elf"; $dry \
+	"$srcdir/grub-mkstandalone" --grub-mkimage="$srcdir/grub-mkimage" \
 	    -O i386-coreboot -o "$srcdir/grub.elf" -d "${srcdir}/grub-core/" \
 	    --fonts= --themes= --locales=  --modules="$grub_modules" \
 	    --install-modules="$grub_install_modules" \
@@ -76,16 +74,11 @@ check_coreboot_utils()
 }
 
 mkcorebootbin()
-{
-	$dry realmkcorebootbin; :
-}
-
-realmkcorebootbin()
 {
 	[ "$target" = "$tree" ] && return 0
 
 	tmprom="$TMPDIR/coreboot.rom"
-	mv "$srcdir/build/coreboot.rom" "$tmprom" || $err "!mktmprom"
+	$dry x_ cp "$srcdir/build/coreboot.rom" "$tmprom"
 
 	initmode="${defconfig##*/}"; displaymode="${initmode##*_}"
 	initmode="${initmode%%_*}"
@@ -105,12 +98,12 @@ realmkcorebootbin()
 
 	[ "$payload_memtest" = "y" ] || payload_memtest="n"
 	[ "$(uname -m)" = "x86_64" ] || payload_memtest="n"
-	if grep "CONFIG_PAYLOAD_NONE=y" "$defconfig"; then
+	if $dry grep "CONFIG_PAYLOAD_NONE=y" "$defconfig"; then
 		[ "$payload_seabios" = "y" ] && pname="seabios" && \
 		    $dry add_seabios
 		[ "$payload_uboot" = "y" ] && pname="uboot" && $dry add_uboot
 	else
-		pname="custom" && cprom; :
+		pname="custom" && $dry cprom; :
 	fi; :
 }
 
@@ -147,10 +140,8 @@ mkseagrub()
 {
 	cbfs "$tmprom" "$grubdata/bootorder" bootorder raw
 	for keymap in config/data/grub/keymap/*.gkb; do
-		[ -f "$keymap" ] || continue
-		keymap="${keymap##*/}"
-		cprom "${keymap%.gkb}"
-	done
+		[ -f "$keymap" ] && cprom "${keymap##*/}"; :
+	done; :
 }
 
 add_uboot()
@@ -166,20 +157,15 @@ add_uboot()
 cprom()
 {
 	newrom="bin/$target/${pname}_${target}_$initmode$displaymode.rom"
-	[ $# -gt 0 ] && newrom="${newrom%.rom}_$1.rom"
+	[ $# -gt 0 ] && newrom="${newrom%.rom}_${1%.gkb}.rom"
 
 	x_ mkdir -p "bin/$target"
 	x_ cp "$tmprom" "$newrom" && [ $# -gt 0 ] && \
-	    cbfs "$newrom" "config/data/grub/keymap/$1.gkb" keymap.gkb raw; :
+	    cbfs "$newrom" "config/data/grub/keymap/$1" keymap.gkb raw; :
 }
 
 mkcoreboottar()
-{
-	$dry realmkcoreboottar
-}
-
-realmkcoreboottar()
 {
 	[ "$target" = "$tree" ] && return 0; [ "$XBMK_RELEASE" = "y" ] && \
-	    [ "$release" != "n" ] && $dry mkrom_tarball "bin/$target"; return 0
+	    [ "$release" != "n" ] && $dry mkrom_tarball "bin/$target"; :
 }
diff --git a/script/trees b/script/trees
index 814d536..227b221 100755
--- a/script/trees
+++ b/script/trees
@@ -12,8 +12,7 @@ set -u -e
 eval `setvars "" xarch srcdir premake cmakedir xlang mode makeargs elfdir cmd \
     project target target_dir targets xtree _f release bootstrapargs mkhelper \
     autoconfargs listfile autogenargs btype tree rev tree_depend build_depend \
-    defconfig postmake mkhelpercfg dry dest_dir mdir`
-badhash="n"
+    defconfig postmake mkhelpercfg dry dest_dir mdir`; badhash="n"
 
 main()
 {
@@ -38,7 +37,7 @@ main()
 	done
 	[ -z "$_f" ] && $err "missing flag (-m/-u/-b/-c/-x/-f/-s/-l/-n)"
 	[ -z "$project" ] && for p in $(ls -1 config/git); do
-		./update trees $_f "$p" || $err "!./update trees $_f $p"; :
+		./mk $_f "$p" || $err "!./mk $_f $p"; :
 	done && return 1
 
 	[ -f "config/git/$project/pkg.cfg" ] || $err "'$project' not defined"
@@ -53,9 +52,8 @@ main()
 	e "$mkhelpercfg" f missing && mkhelpercfg="$TMPDIR/mkhelper.cfg" && \
 	    x_ touch "$mkhelpercfg"
 
-	targets="$@"
-	cmd="build_targets $targets" && singletree "$project" && \
-	    cmd="build_project"
+	targets="$@"; cmd="build_targets $targets"
+	singletree "$project" && cmd="build_project"
 
 	remkdir "${tmpgit%/*}"
 }
@@ -95,8 +93,7 @@ handle_defconfig()
 	configure_project "$target_dir" || return 0
 	x_ mkdir -p "$elfdir/$target"
 
-	chkvars tree
-	srcdir="src/$project/$tree"
+	chkvars tree; srcdir="src/$project/$tree"
 
 	if [ "$mode" = "distclean" ] || [ "$mode" = "crossgcc-clean" ]; then
 		[ -d "$srcdir" ] || return 0
@@ -117,17 +114,12 @@ configure_project()
 {
 	eval `setvars "" xarch xlang build_depend autoconfargs xtree postmake \
 	    tree_depend makeargs btype mkhelper bootstrapargs premake release`
-	badhash="n"
-
-	[ -f "$1/target.cfg" ] || btype="auto"
+	_tcfg="$1/target.cfg"; badhash="n"; [ -f "$_tcfg" ] || btype="auto"
 	[ -f "$datadir/mkhelper.cfg" ] && eval `setcfg "$datadir/mkhelper.cfg"`
 
-	_tcfg="$1/target.cfg"
 	while [ -f "$_tcfg" ] || [ "$cmd" != "build_project" ]; do
-		eval `setvars "" rev tree`
-
+		eval `setvars "" rev tree`; eval `setcfg "$_tcfg"`
 		printf "Loading %s config: %s\n" "$project" "$_tcfg"
-		eval `setcfg "$_tcfg"`
 
 		[ "$_f" = "-d" ] && build_depend="" # dry run
 		[ "$cmd" = "build_project" ] && break
@@ -136,20 +128,16 @@ configure_project()
 		[ "${_tcfg%/*/target.cfg}" = "${_tcfg%"/$tree/target.cfg"}" ] \
 		    && break; _tcfg="${_tcfg%/*/target.cfg}/$tree/target.cfg"
 	done
-
 	[ "$XBMK_RELEASE" = "y" ] && [ "$release" = "n" ] && return 1
 	[ -z "$btype" ] || [ "${mode%config}" = "$mode" ] || return 1
-
 	[ -z "$mode" ] && build_dependencies
 
 	mdir="$PWD/config/submodule/$project"
 	[ -n "$tree" ] && mdir="$mdir/$tree"
-
 	[ -f "CHANGELOG" ] || check_project_hashes
 
-	[ "$mode" = "fetch" ] || x_ ./update trees -f "$project" $target
+	[ "$mode" = "fetch" ] || x_ ./mk -f "$project" $target
 	[ "$mode" = "fetch" ] || return 0
-
 	[ -f "CHANGELOG" ] && return 1; fetch_${cmd#build_}; return 1
 }
 
@@ -159,7 +147,7 @@ build_dependencies()
 		bd_p="${bd%%/*}"; bd_t="${bd##*/}"
 		[ -z "$bd_p" ] && $dry $err "$project/$tree: !bd '$bd'"
 		[ "${bd##*/}" = "$bd" ] && bd_t=""
-		[ -z "$bd_p" ] || $dry ./update trees -b $bd_p $bd_t \
+		[ -z "$bd_p" ] || $dry ./mk -b $bd_p $bd_t \
 		    || $err "!mk $project/$tree $bd_p/$bd_t"; continue
 	done; return 0
 }
@@ -167,28 +155,23 @@ build_dependencies()
 check_project_hashes()
 {
 	mkdir -p "$XBMK_CACHE/hash" || $err "!mkdir '$XBMK_CACHE/hash'"
-
-	old_pjhash=""
-	[ ! -f "$XBMK_CACHE/hash/$project$tree" ] || \
+	old_pjhash=""; [ ! -f "$XBMK_CACHE/hash/$project$tree" ] || \
 	    read -r old_pjhash < "$XBMK_CACHE/hash/$project$tree"
 
 	x_ rm -f "$TMPDIR/project.list" "$TMPDIR/project.hash" \
 	    "$TMPDIR/project.tmp"; x_ touch "$TMPDIR/project.tmp"
 	x_ touch "$TMPDIR/project.hash"
 
-	for delcheck in "$datadir" "$configdir/$tree" "$mdir"; do
-		[ -d "$delcheck" ] || continue
-		find "$delcheck" -type f -not -path "*/.git*/*" \
-		    >> "$TMPDIR/project.tmp" || \
-		    $err "!find $delcheck > project.tmp"
-	done
-	sort "$TMPDIR/project.tmp" > "$TMPDIR/project.list" || \
+	for rmchk in "$datadir" "$configdir/$tree" "$mdir"; do
+		[ -d "$rmchk" ] || continue
+		find "$rmchk" -type f -not -path "*/.git*/*" >> \
+		    "$TMPDIR/project.tmp" || $err "!find $rmchk > project.tmp"
+	done; sort "$TMPDIR/project.tmp" > "$TMPDIR/project.list" || \
 	    $err "!sort project tmp/list"
 
-	while read -r delcheck; do
-		[ -f "$delcheck" ] || continue
-		sha512sum "$delcheck" | awk '{print $1}' >> \
-		    "$TMPDIR/project.hash" || $err "!findhash $delcheck"
+	while read -r rmchk; do
+		[ ! -f "$rmchk" ] || sha512sum "$rmchk" | awk \
+		    '{print $1}' >> "$TMPDIR/project.hash" || $err "!h $rmchk"
 	done < "$TMPDIR/project.list"
 
 	pjhash="$(sha512sum "$TMPDIR/project.hash" | awk '{print $1}')" || :
@@ -200,7 +183,7 @@ check_project_hashes()
 
 	[ "$badhash" = "n" ] || rm -Rf "src/$project/$tree" \
 	    "elf/$project/$tree" "elf/$project/$target" || \
-	    $err "!rmproject $project $tree"; :
+	    $err "!rm $project $tree"; :
 }
 
 check_cross_compiler()
@@ -211,7 +194,7 @@ check_cross_compiler()
 		[ "$project" != "coreboot" ] && cbdir="src/coreboot/default"
 		[ -n "$xtree" ] && cbdir="src/coreboot/$xtree"
 
-		x_ ./update trees -f coreboot ${cbdir#src/coreboot/}
+		x_ ./mk -f coreboot ${cbdir#src/coreboot/}
 
 		export PATH="$PWD/$cbdir/util/crossgcc/xgcc/bin:$PATH"
 		export CROSS_COMPILE="${xarch% *}-"
@@ -261,7 +244,6 @@ handle_makefile()
 run_make_command()
 {
 	[ -z "$premake" ] || [ -n "$mode" ] || $premake || $err "!$premake"
-
 	$dry check_cmake "$srcdir" && [ -z "$mode" ] && $dry check_autoconf \
 	    "$srcdir"; $dry check_makefile "$srcdir" || return 1