20 files changed, 404 insertions, 292 deletions

diff --git a/.gitignore b/.gitignore
index 2af088f..c33e836 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,5 @@
 /*.tar.*
 /*-[0-9]*/
 tmp.*
+
+.rvs/
diff --git a/configure b/configure
index 5e99fa6..9fb3b3b 100755
--- a/configure
+++ b/configure
@@ -48,13 +48,12 @@ args=$(getopt -n "$name" -o "${sopt}" -l "${lopt}" -- "$@") || exit $?
 eval set -- "$args"
 while [ $# -gt 0 ]; do
 	case "$1" in
-		--) break;;
-		--enable-autodeps) setvar AUTODEPS t;;
-		--disable-autodeps) setvar AUTODEPS '';;
-		--*) setvar "${1#--}" "$2" shift;;
+		--) shift; break;;
+		--enable-autodeps) setvar AUTODEPS t; shift;;
+		--disable-autodeps) setvar AUTODEPS ''; shift;;
+		--*) setvar "${1#--}" "$2"; shift 2;;
 		*) error "unrecognized option \`$1'";
 	esac
-	shift
 done
 
 "${edit[@]}" < "$srcdir/config.mk.in" > "$outdir/config.mk"
diff --git a/modules/.gitignore b/modules/.gitignore
index 3c197bc..737b845 100644
--- a/modules/.gitignore
+++ b/modules/.gitignore
@@ -3,3 +3,4 @@
 !*/.gitignore
 !*/*.mk
 !*/*.sh
+!*/*.m4
diff --git a/modules/blobs/.gitignore b/modules/blobs/.gitignore
new file mode 100644
index 0000000..795fcd0
--- /dev/null
+++ b/modules/blobs/.gitignore
@@ -0,0 +1 @@
+/_shlib.sh
diff --git a/modules/blobs/Makefile.inc.mk b/modules/blobs/Makefile.inc.mk
index 9f3f112..484da13 100644
--- a/modules/blobs/Makefile.inc.mk
+++ b/modules/blobs/Makefile.inc.mk
@@ -1,8 +1,9 @@
-am_src_files += commit.d.sh commit.f.sh commit.sh get.d.sh get.f.sh get.sh ls.sh print.sh tree.sh
-am_out_files += commit.d    commit.f    commit    get.d    get.f    get    ls    print    tree
+am_src_files += commit.d.sh commit.f.sh commit.l.sh commit.sh get.d.sh get.f.sh get.l.sh get.sh tree.sh init.sh
+am_out_files += commit.d    commit.f    commit.l    commit    get.d    get.f    get.l.sh get    tree    init
 
-am_src_files += _stdio.sh
-am_sys_files += $(pkglibexecdir)/modules/$(name)/_stdio.sh
+am_src_files += _shlib.sh.m4
+am_clean_files += _shlib.sh
+am_sys_files += $(pkglibexecdir)/modules/$(name)/_shlib.sh
 
-$(DESTDIR)$(pkglibexecdir)/modules/$(name)/_stdio.sh: $(srcdir)/_stdio.sh | $(DESTDIR)$(pkglibexecdir)/modules/$(name)
+$(DESTDIR)$(pkglibexecdir)/modules/$(name)/_shlib.sh: $(srcdir)/_shlib.sh | $(DESTDIR)$(pkglibexecdir)/modules/$(name)
 	$(INSTALL_DATA) $< $@
diff --git a/modules/blobs/_shlib.sh.m4 b/modules/blobs/_shlib.sh.m4
new file mode 100644
index 0000000..567486f
--- /dev/null
+++ b/modules/blobs/_shlib.sh.m4
@@ -0,0 +1,129 @@
+#!/hint/bash
+#  Copyright (C) 2009-2010, 2016 Luke Shumaker
+#
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License as
+#  published by the Free Software Foundation; either version 2 of the
+#  License, or (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+#  General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program;  see the file COPYING.
+#  If not, see <http://www.gnu.org/licenses>.
+
+m4_include(config.sh)
+
+#
+
+_() {
+	if type gettext &>/dev/null; then
+		TEXTDOMAINDIR=$localedir gettext "$pkgtextdomain" "$1";
+	else
+		printf '%s' "$1";
+	fi
+}
+
+# variables:
+# - usage[]
+# - desc
+# - doc (optional)
+usage() {
+	local form
+	local pfix1="$(_ 'Usage:')"
+	local pfix2="$(_ '   Or:')"
+	local pfix="pfix1"
+	for form in "${usage[@]}"; do
+		printf '%s %q %q %s\n' "$pfix" "$RVS" "$form"
+		pfix="$pfix2"
+	done
+	printf '%s\n' "$(_ "$desc")"
+	if [[ -n "$doc" ]] && [[ "$volume" != '-q' ]]; then
+		printf '\n\n%s\n' "$(_ "$doc")"
+	fi
+}
+
+# variables:
+# - name
+# - ver
+# - copyright
+# - license
+# - volume
+version() {
+	declare -A license_name
+	license_name['GPLv1']='GNU GPL version 1'
+	license_name['GPLv1+']='GNU GPL version 1 or later'
+	license_name['GPLv2']='GNU GPL version 2'
+	license_name['GPLv2+']='GNU GPL version 2 or later'
+	license_name['GPLv3']='GNU GPL version 3'
+	license_name['GPLv3+']='GNU GPL version 3 or later'
+	license_name['LGPLv2']='GNU Library GPL version 2'
+	license_name['LGPLv2+']='GNU Library GPL version 2 or later'
+	license_name['LGPLv2.1']='GNU Lesser GPL version 2.1'
+	license_name['LGPLv2.1+']='GNU Lesser GPL version 2.1 or later'
+	license_name['LGPLv3']='GNU Lesser GPL version 3'
+	license_name['LGPLv3+']='GNU Lesser GPL version 3 or later'
+	licensE_name['AGPLv3']='GNU Affero GPL version 3'
+	licensE_name['AGPLv3+']='GNU Affero GPL version 3 or later'
+	declare -A license_url
+	license_url['GPLv2']='https://gnu.org/licenses/old-licenses/gpl-1.0.html'
+	license_url['GPLv2']='https://gnu.org/licenses/old-licenses/gpl-2.0.html'
+	license_url['GPLv3']='https://gnu.org/licenses/gpl.html'
+	license_url['LGPLv2']='https://gnu.org/licenses/old-licenses/lgpl-2.0.html'
+	license_url['LGPLv2.1']='https://gnu.org/licenses/old-licenses/lgpl-2.1.html'
+	license_url['LGPLv3']='https://gnu.org/licenses/lgpl.html'
+	license_url['AGPLv3']='https://gnu.org/licenses/agpl.html'
+	
+	printf "$(_ '%s (RVS) %s\n')" "$name" "$ver"
+	if [ "$volume" != '-q' ]; then
+		printf "$(_ 'Copyright (C) %s\n')" "${copyright[@]}"
+		local url="${license_url[$license]}"
+		if [[ -z "$url" ]]; then
+			url="${license_url[${license%+}]}"
+		fi
+		printf "$(_ 'License %s: %s <%s>.\n')" "$license" "${license_name[$license]}" "$url"
+		printf "$(_ \
+'This is free software: you are free to change and redistribute it.
+There is NO WARRANTY, to the extend permitted by law.
+')"
+		if [[ -z "$author" ]] && [[ "${#copyright[@]}" -eq 1 ]]; then
+			printf -v author "$(_ 'Originally written by %s.')" "$(sed 's/^[0-9, -]*//' <<<"${copyright[0]}")"
+		fi
+		if [[ -n "$author" ]]; then
+		      printf '%s\n' "$author"
+		fi
+	fi
+}
+
+verbose() {
+	if [ "$volume" == '-v' ]; then
+		printf "$(_ "$1")\n" "${@:2}" >&2
+	fi
+}
+
+out() {
+	if [ "$volume" != '-q' ]; then
+		printf "$(_ "$1")\n" "${@:2}" >&2
+	fi
+}
+
+warn() {
+	printf "$name: $(_ "$1")\n" "${@:2}" >&2
+}
+
+error() {
+	warn "$@"
+	exit 1
+}
+
+errusage() {
+	if [[ $# -gt 0 ]]; then
+		warn "$@"
+	fi
+	volume='-q'
+	usage >&2
+	exit 1
+}
diff --git a/modules/blobs/_stdio.sh b/modules/blobs/_stdio.sh
deleted file mode 100644
index 0da03f0..0000000
--- a/modules/blobs/_stdio.sh
+++ /dev/null
@@ -1,74 +0,0 @@
-#!/bin/sh
-#name='stdio'
-#ver=0.9
-#  Copyright (C) 2009-2010 Luke Shumaker
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License as
-#  published by the Free Software Foundation; either version 2 of the
-#  License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-#  General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program;  see the file COPYING.
-#  If not, see <http://www.gnu.org/licenses>.
-
-verbose() {
-	if [ "$volume" == '-v' ]; then
-		echo $@ >> /dev/stderr
-	fi
-}
-
-out() {
-	if [ "$volume" != '-q' ]; then
-		echo $@ >> /dev/stderr
-	fi
-}
-
-warn () {
-	echo "$name: $1" >> /dev/stderr
-}
-
-fatal () {
-	warn "$1"
-	exit 1
-}
-
-error() {
-	warn "$1"
-	cat << __error__ >> /dev/stderr
-Usage: $RVS $name $usage
-
-Try \`$RVS help $name' for more options.
-__error__
-	exit 1
-}
-
-getvar() {
-	if [ -z "$1" ]; then
-		error
-	else
-		echo $1
-	fi
-}
-
-version() {
-	echo "$name $ver"
-	if [ "$volume" != '-q' ]; then
-		cat << __disclaimer__
-$name is copyright (C) 2009-2010 Luke Shumaker
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-Originally written by Luke Shumaker <LukeShu@sbcglobal.net>.
-__disclaimer__
-	fi
-	exit 0
-}
-
diff --git a/modules/blobs/commit.d.sh b/modules/blobs/commit.d.sh
index 7fcdd7e..08e9698 100644
--- a/modules/blobs/commit.d.sh
+++ b/modules/blobs/commit.d.sh
@@ -1,7 +1,8 @@
 #!/usr/bin/env bash
-# rvs blobs/commit.d - add a directory to the repository
-# Copyright (C) 2009-2010, 2015-2016  Luke Shumaker
-#
+name=blobs/commit.d
+desc='Add a directory to the repository'
+copyright=('2009-2010, 2015-2016  Luke Shumaker')
+license='AGPLv3+'
 # This file is part of rvs.
 #
 # This program is free software: you can redistribute it and/or modify
@@ -17,18 +18,25 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-. "${0%/*}/_stdio.sh"
+usage=('DIRECTORY')
+. "${0%/*}/_shlib.sh"
+
+main() {
+	[[ $# -eq 1 ]] || errusage
+	dir="$1"
 
-usage='DIRECTORY'
-[[ $# -eq 1 ]] || errusage
-dir="$1"
+	tmpfile="$(mktemp -t "${0##*/}.XXXXXXXXXX")"
+	trap 'rm -f -- "$tmpfile"' EXIT
+	(
+		cd "$dir"
+		shopt -s dotglob nullglob
+		for file in *; do
+			id="$("$RVS" commit "$file")"
+			stat -c $'%a\t%u (%U)\t%g (%G)\t' -- "$file"
+			printf $'%s\t%s\n' "$id" "$file"
+		done > "$tmpfile"
+	)
+	"$RVS" commit.f "$tmpfile" 'd'
+}
 
-shopt -s dotglob
-cd "$dir"
-tmpfile="$(mktemp -t "${0##*/}.XXXXXXXXXX")"
-for file in *; do
-	id="$("$RVS" commit "$file")"
-	stat -c $'%a\t%u (%U)\t%g (%G)\t' -- "$file"
-	printf $'%s\t%s\n' "$id" "$file"
-done > "$tmpfile"
-"$RVS" commit.f "$tmpfile" d
+main "$@"
diff --git a/modules/blobs/commit.f.sh b/modules/blobs/commit.f.sh
index 098be9d..233f7bb 100644
--- a/modules/blobs/commit.f.sh
+++ b/modules/blobs/commit.f.sh
@@ -1,7 +1,8 @@
 #!/usr/bin/env bash
-# rvs blobs/commit.f - add a plain file to the repository
-# Copyright (C) 2009-2010, 2015-2016  Luke Shumaker
-#
+name=blobs/commit.f
+desc='Add a plain file to the repository'
+copyright=('2009-2010, 2015-2016  Luke Shumaker')
+license='AGPLv3+'
 # This file is part of rvs.
 #
 # This program is free software: you can redistribute it and/or modify
@@ -17,21 +18,32 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-. "${0%/*}/_stdio.sh"
-
 usage='FILENAME [TYPE]'
-case $# in
-	0) errusage;;
-	1) infile=$1; type=f;;
-	2) infile=$1; type=$2;;
-	*) errusage;;
-esac
+doc="Note that FILENAME must be a regular file; character devices such as
+/dev/stdin or /dev/fd/n won't work."
+
+. "${0%/*}/_shlib.sh"
+
+main() {
+	case $# in
+		0) errusage;;
+		1) infile=$1; type=f;;
+		2) infile=$1; type=$2;;
+		*) errusage;;
+	esac
+
+	if ! [[ -f "$infile" ]]; then
+		error 'Not a regular file: %s' "$infile"
+	fi
 
-hash="$(<"$file" sha1sum | cut -d ' ' -f1)"
-outfile="$RVS_REPO/blobs/$hash"
-if [ ! -f "$outfile" ]; then
-	mkdir -p -- "${outfile%/*}"
-	< "$infile" gzip -9 > "$outfile"
-fi
-printf '%s:%s\n' "$type" "$hash"
+	hash="$(<"$infile" sha1sum | cut -d ' ' -f1)"
+	outfile="$RVS_REPO/blobs/$hash"
+	if [ ! -f "$outfile" ]; then
+		mkdir -p -- "${outfile%/*}"
+		< "$infile" gzip -9 > "$outfile.tmp"
+		mv -T -- "$outfile.tmp" "$outfile"
+	fi
+	printf '%s:%s\n' "$type" "$hash"
+}
 
+main "$@"
diff --git a/modules/blobs/print.sh b/modules/blobs/commit.l.sh
index dbc5fb8..54a2527 100644
--- a/modules/blobs/print.sh
+++ b/modules/blobs/commit.l.sh
@@ -1,7 +1,8 @@
 #!/usr/bin/env bash
-# rvs files/print - ???
-# Copyright (C) 2009-2010, 2015-2016  Luke Shumaker
-#
+name=blobs/commit.l
+desc='Add a symbolic link to the repository'
+copyright=('2016  Luke Shumaker')
+license='AGPLv3+'
 # This file is part of rvs.
 #
 # This program is free software: you can redistribute it and/or modify
@@ -17,25 +18,17 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-. "${0%/*}/_stdio.sh"
-
-usage='ID'
-[[ $# -eq 1 ]] || errusage
-id=$1
+usage=('DIRECTORY')
+. "${0%/*}/_shlib.sh"
 
-hash="${id#*:}"
-file="$REPO/blobs/$hash"
+main() {
+	[[ $# -eq 1 ]] || errusage
+	link="$1"
 
-if [ -e "$file" ]; then
-	t="${id%%:*}"
-	type=''
-	case "$t" in
-		f) type='regular file';;
-		d) type='directory';;
-		l) type='link';;
-	esac
-	printf 'File Type: %s (%s)\n' "$t" "$type"
-else
-	fatal 'no object with ID `%s'\' "$id"
-fi
+	tmpfile="$(mktemp -t "${0##*/}.XXXXXXXXXX")"
+	trap 'rm -f -- "$tmpfile"' EXIT
+	readlink -n -- "$link" > "$tmpfile"
+	"$RVS" commit.f "$tmpfile" 'l'
+}
 
+main "$@"
diff --git a/modules/blobs/commit.sh b/modules/blobs/commit.sh
index 01bc338..44a2465 100644
--- a/modules/blobs/commit.sh
+++ b/modules/blobs/commit.sh
@@ -1,7 +1,8 @@
 #!/usr/bin/env bash
-# rvs blobs/commit - add a file to the repository
-# Copyright (C) 2009-2010, 2015-2016  Luke Shumaker
-#
+name=blobs/commit
+desc='Add files to the repository'
+copyright=('2009-2010, 2015-2016  Luke Shumaker')
+license='AGPLv3+'
 # This file is part of rvs.
 #
 # This program is free software: you can redistribute it and/or modify
@@ -17,23 +18,31 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-. "${0%/*}/_stdio.sh"
-
-usage='[FILES...]'
-if [[ $# -lt 1 ]]; then
-	set -- .
-fi
+usage=('[FILES...]')
+. "${0%/*}/_shlib.sh"
 
-for file in "$@"; do
-	local type
-	if test -L "$file"; then
-		type=l
-	elif test -f "$file"; then
-		type=f
-	elif test -d "$file"; then
-		type=d
-	else
-		error 'Unsupported file type: %s' "$file"
+main() {
+	if [[ $# -lt 1 ]]; then
+		set -- .
 	fi
-	"$RVS" "commit.$type" "$file"
-done
+
+	for file in "$@"; do
+		if ! stat -c '' -- "$file" &>/dev/null; then
+			error 'No such file or directory: %s' "$file"
+		fi
+
+		local type
+		if test -L "$file"; then
+			type=l
+		elif test -f "$file"; then
+			type=f
+		elif test -d "$file"; then
+			type=d
+		else
+			error 'File has unsupported file type: %s' "$file"
+		fi
+		"$RVS" "commit.$type" "$file"
+	done
+}
+
+main "$@"
diff --git a/modules/blobs/get.d.sh b/modules/blobs/get.d.sh
index e67a267..5fdf0b2 100644
--- a/modules/blobs/get.d.sh
+++ b/modules/blobs/get.d.sh
@@ -1,7 +1,8 @@
 #!/usr/bin/env bash
-# rvs blobs/get.d - get a directory from the repository
-# Copyright (C) 2009-2010, 2015-2016  Luke Shumaker
-#
+name=blobs/get.d
+desc='Get a directory from the repository'
+copyright=('2009-2010, 2015-2016  Luke Shumaker')
+license='AGPLv3+'
 # This file is part of rvs.
 #
 # This program is free software: you can redistribute it and/or modify
@@ -17,21 +18,22 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-. "${0%/*}/_stdio.sh"
+usage="ID DIRNAME"
+. "${0%/*}/_shlib.sh"
 
-usage="DIRNAME ID"
-[[ $# -eq 2 ]] || errusage
-name=$1
-id=$2
+main() {
+	[[ $# -eq 2 ]] || errusage
+	dirid=$1
+	dirname=$2
 
-tmpfile="$(mktemp -t "${0##*/}.XXXXXXXXXX")"
-"$RVS" get.f "$tmpfile" "$id"
+	mkdir -p -- "$dirname"
+	cd "$dirname"
 
-mkdir -p -- "$name"
-cd "$name"
+	IFS=$'\t'
+	while read -r perm user group id name; do
+		"$RVS" get "$id" "$name"
+		chmod "$perm" "$name"
+	done < <("$RVS" get.f "$dirid" /dev/stdout)
+}
 
-IFS=$'\t'
-while read -r perm user group id name; do
-	"$RVS" get "$name" "$id"
-	chmod "$perm" "$name"
-done < "$tmpfile"
+main "$@"
diff --git a/modules/blobs/get.f.sh b/modules/blobs/get.f.sh
index 08aca97..fafb076 100644
--- a/modules/blobs/get.f.sh
+++ b/modules/blobs/get.f.sh
@@ -1,7 +1,8 @@
 #!/usr/bin/env bash
-# rvs blobs/get.f - get a plain file from the repository
-# Copyright (C) 2009-2010, 2015-2016  Luke Shumaker
-#
+name=blobs/get.f
+desc='Get a plain file from the repository'
+copyright=('2009-2010, 2015-2016  Luke Shumaker')
+license='AGPLv3+'
 # This file is part of rvs.
 #
 # This program is free software: you can redistribute it and/or modify
@@ -17,13 +18,18 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-. "${0%/*}/_stdio.sh"
+usage="ID FILENAME"
+doc="Unlike commit.f, FILENAME may be a character device such as
+/dev/stdout or /dev/fd/n."
+. "${0%/*}/_shlib.sh"
 
-usage="FILENAME ID"
-[[ $# -eq 2 ]] || errusage
-name=$1
-id=$2
+main() {
+	[[ $# -eq 2 ]] || errusage
+	id=$1
+	name=$2
 
-mkdir -p -- "${name%/*}"
-< "$REPO/blobs/${id#*:}" gunzip > "$name"
+	mkdir -p -- "$(dirname -- "$name")"
+	< "$REPO/blobs/${id#*:}" gunzip > "$name"
+}
 
+main "$@"
diff --git a/modules/blobs/get.l.sh b/modules/blobs/get.l.sh
new file mode 100644
index 0000000..8215cf6
--- /dev/null
+++ b/modules/blobs/get.l.sh
@@ -0,0 +1,33 @@
+#!/usr/bin/env bash
+name=blobs/get.l
+desc='Get a symbolic link from the repository'
+copyright=('2016  Luke Shumaker')
+license='AGPLv3+'
+# This file is part of rvs.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+usage="ID DIRNAME"
+. "${0%/*}/_shlib.sh"
+
+main() {
+	[[ $# -eq 2 ]] || errusage
+	id=$1
+	name=$2
+
+	mkdir -p -- "$(dirname -- "$name")"
+	ln -sf "$("$RVS" get.f "$id" /dev/stdout)" "$name"
+}
+
+main "$@"
diff --git a/modules/blobs/get.sh b/modules/blobs/get.sh
index b4cc6ff..26fb273 100644
--- a/modules/blobs/get.sh
+++ b/modules/blobs/get.sh
@@ -1,7 +1,8 @@
 #!/usr/bin/env bash
-# rvs blobs/get - get a file from the repository
-# Copyright (C) 2009-2010, 2015-2016  Luke Shumaker
-#
+name=blobs/get
+desc='Get a file from the repository'
+copyright='2009-2010, 2015-2016  Luke Shumaker'
+license=('AGPLv3+')
 # This file is part of rvs.
 #
 # This program is free software: you can redistribute it and/or modify
@@ -17,12 +18,15 @@
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-. "${0%/*}/_stdio.sh"
+usage="ID FILENAME"
+. "${0%/*}/_shlib.sh"
 
-usage="FILENAME ID"
-[[ $# -eq 2 ]] || errusage
-name=$1
-id=$2
+main() {
+	[[ $# -eq 2 ]] || errusage
+	id=$1
+	name=$2
 
-"$RVS" "get.${id%%:*}" "$name" "$id"
+	"$RVS" "get.${id%%:*}" "$name" "$id"
+}
 
+main "$@"
diff --git a/modules/blobs/init.sh b/modules/blobs/init.sh
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/modules/blobs/init.sh
diff --git a/modules/blobs/ls.sh b/modules/blobs/ls.sh
deleted file mode 100644
index 76b6743..0000000
--- a/modules/blobs/ls.sh
+++ /dev/null
@@ -1,50 +0,0 @@
-#!/usr/bin/env bash
-name='ls'
-ver=0.1
-#  Copyright (C) 2010, 2016 Luke Shumaker
-#
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License as
-#  published by the Free Software Foundation; either version 2 of the
-#  License, or (at your option) any later version.
-#
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-#  General Public License for more details.
-#
-#  You should have received a copy of the GNU General Public License
-#  along with this program;  see the file COPYING.
-#  If not, see <http://www.gnu.org/licenses>.
-
-. "${0%/*}/_stdio.sh"
-
-usage="DIR_ID [FORMAT]"
-id="`getvar "$1"`"
-form="${2-%p\t%o\t%g\t%n\t%i}"
-
-# %p - permissions
-# %o - owner
-# %g - group
-# %i - blob id
-# %n - name
-# \t - a tab char
-
-tmp="`mktemp`"
-"$RVS" get.f "$tmp" "$id"
-
-while read line; do
-	p="`echo "$line" | cut -f1`"
-	o="`echo "$line" | cut -f2`"
-	g="`echo "$line" | cut -f3`"
-	i="`echo "$line" | cut -f4`"
-	n="`echo "$line" | cut -f5-`"
-	echo "$form" | sed \
-		-e 's:\\t:\t:g' \
-		-e "s:%p:${p/:/\\:}:g" \
-		-e "s:%o:${o/:/\\:}:g" \
-		-e "s:%g:${g/:/\\:}:g" \
-		-e "s:%i:${i/:/\\:}:g" \
-		-e "s:%n:${n/:/\\:}:g"
-done < "$tmp"
-
diff --git a/modules/blobs/tree.sh b/modules/blobs/tree.sh
index a13b320..f08db42 100644
--- a/modules/blobs/tree.sh
+++ b/modules/blobs/tree.sh
@@ -1,40 +1,74 @@
 #!/usr/bin/env bash
-name='tree'
-ver=0.1
-#  Copyright (C) 2010, 2016 Luke Shumaker
+name=bolbs/tree
+desc='Recursively show the directory tree of a blob ID'
+copyright=('2010, 2016 Luke Shumaker')
+license=('AGPLv3+')
+# This file is part of rvs.
 #
-#  This program is free software; you can redistribute it and/or
-#  modify it under the terms of the GNU General Public License as
-#  published by the Free Software Foundation; either version 2 of the
-#  License, or (at your option) any later version.
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
 #
-#  This program is distributed in the hope that it will be useful,
-#  but WITHOUT ANY WARRANTY; without even the implied warranty of
-#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-#  General Public License for more details.
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
 #
-#  You should have received a copy of the GNU General Public License
-#  along with this program;  see the file COPYING.
-#  If not, see <http://www.gnu.org/licenses>.
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
-. "${0%/*}/_stdio.sh"
+usage="DIR_ID [NAME [PREFIX [LAST]]]"
+. "${0%/*}/_shlib.sh"
 
-usage="DIR_ID [NAME] [PREFIX] [LAST]"
-id="`getvar "$1"`"
-name="${2-.}"
-pref="$3"
-last="$4"
+main() {
+	local id name prefix has_prefix last
+	case $# in
+		0) errusage;;
+		1) id=$1; name=.;;
+		2) id=$1; name=$2;; prefix=''; has_prefix=false;;
+		3) id=$1; name=$2;; prefix=$3; has_prefix=true;;
+		3) id=$1; name=$2;; prefix=$3; has_prefix=true; last=$4;;
+		*) errusage;;
+	esac
 
-echo "$pref $name	$id"
-pref=' | '
-"$RVS" ls "$id" '%i\t%n' | while read line; do
-	i="`echo "$line" | cut -f1`"
-	n="`echo "$line" | cut -f2-`"
-	t="`"$RVS" blob-gettype "$i"`"
-	if [ "$t" = 'd' ]
-		"$RVS" tree "$i" "$n" "$pref"
+	local a b c
+	if locale -k LC_MESSAGES | grep -xF 'messages-codeset="UTF-8"' >/dev/null; then
+		a='├── '
+		b='│   '
+		c='└── '
 	else
-		echo "$pref $n	$i"
+		a='|-- '
+		b='|   '
+		c='`-- '
 	fi
-done
 
+	local pfix_self pfix_chld
+	if ! $has_prefix; then
+		pfix_self=''
+		pfix_chld=''
+	else
+		pfix_self="$prefix$a"
+		pfix_chld="$prefix$b"
+		if [[ -n "$last" ]]; then
+			pfix_self="$prefix$c"
+		fi
+	fi
+
+	printf "%s$(_ '%s\t(%s)')\n" "$pfix_self" "$name" "$id"
+	if [[ "$id" == d:* ]]; then
+		local lastname
+		lastname="$("$RVS" get.d "$id" /dev/stdout | sed -n '$/.*\t//p')"
+		local perm user group id name
+		while read -r perm user group id name; do
+			if [[ "$name" != "$lastname" ]]; then
+				"$RVS" tree "$id" "$name" "$pfix_chld"
+			else
+				"$RVS" tree "$id" "$name" "$pfix_chld" t
+			fi
+		done < <("$RVS" get.d "$id" /dev/stdout)
+	fi
+
+}
+
+main "$@"
diff --git a/wrapper/inner.sh.m4 b/wrapper/inner.sh.m4
index b07199e..09c870d 100644
--- a/wrapper/inner.sh.m4
+++ b/wrapper/inner.sh.m4
@@ -25,13 +25,13 @@ declare -r varname_EXEC_PATH="${PACKAGE^^}_EXEC_PATH"
 
 declare -r program_name="$1"; shift
 
-
+#
 
 _() {
 	if type gettext &>/dev/null; then
 		TEXTDOMAINDIR=$localedir gettext "$pkgtextdomain" "$1";
 	else
-		echo "$1";
+		printf '%s' "$1";
 	fi
 }
 
@@ -46,9 +46,9 @@ sighandler_exit() {
 install_sighandlers() {
 	set -E
 	for signal in TERM HUP QUIT; do
-		trap "signalhandler_exit $signal '%s signal cought.  Exiting...'" $signal
+		trap "sighandler_exit $signal '%s signal cought.  Exiting...'" $signal
 	done
-	trap 'signalhandler_exit INT "Aborted by user.  Exiting..."' INT
+	trap 'sighandler_exit INT "Aborted by user.  Exiting..."' INT
 	trap 'kill -USR1 "$$"' ERR
 }
 
@@ -74,9 +74,9 @@ _runcmd() {
 	shopt -s nullglob
 	local files=("${exec_path}"/modules/*/"$cmd")
 	if [[ ${#files[@]} -eq 0 ]]; then
-		error 127 '%s: Not a %s command' "$cmd" "$PACKAGE"
+		error 127 'Command not found: %s'"$cmd"
 	fi
-	files=("${files[@]#"${exec_path/modules/}"}")
+	files=("${files[@]#"${exec_path}/modules/"}")
 
 	local tmpdir
 	trap '[ -z "${tmpdir:-}" ] || rm -rf -- "$tmpdir"' EXIT
@@ -90,7 +90,7 @@ _runcmd() {
 	local cwd
 	printf -v cwd '%q' "$PWD"
 
-	make -j1 \
+	make -j1 --no-print-directory --quiet \
 	     -f "$exec_path/runcmd.mk" \
 	     -C "$tmpdir/output" \
 	     CWD="$cwd" \
@@ -102,10 +102,11 @@ _runcmd() {
 }
 
 _repo() {
-	[[ $# -ne 0 ]] || errusage 1 'Usage: %q repo'
+	[[ $# -eq 0 ]] || errusage 1 'Usage: %q repo'
 	if [ -z "${!varname_REPO:-}" ]; then # we aren't getting a value from then env
 		local repo=".${PACKAGE,,}"
 
+		OLDPWD=''
 		#     [------can ascend-----] && ! [-not found repo--]
 		while [ "$PWD" != "$OLDPWD" ] && ! [ -d "$PWD/$repo" ]; do
 			cd ..
@@ -124,22 +125,22 @@ _repo() {
 }
 
 _init() {
-	[[ $# -gt 1 ]] || errusage 1 'Usage: %q init [directory]'
+	[[ $# -le 1 ]] || errusage 1 'Usage: %q init [directory]'
 	local dir="${1:-$PWD}"
 	mkdir -p -- "$dir"
 	cd "$dir"
 	repo="$(_repo 2> /dev/null)" || true
 	if [ -n "${repo:-}" ]; then
-		error 129 "Repository already exists at \`%s'" "$repo"
+		error 129 'Repository already exists: %s' "$repo"
 	fi
 	export "$varname_REPO=$PWD/.${PACKAGE,,}"
-	mkdir "${!varname_REPO}"
+	test -d "${!varname_REPO}" || mkdir "${!varname_REPO}"
 	_runcmd init "$dir"
 }
 
 main() {
 	install_sighandlers
-	[[ $# -ge 1 ]] || error 'No command specified';;
+	[[ $# -ge 1 ]] || error 2 'No command specified';
 	export "${PACKAGE^^}=$program_name"
 
 	local cmd=$1; shift
diff --git a/wrapper/runcmd.mk b/wrapper/runcmd.mk
index 7340d11..cdfa897 100644
--- a/wrapper/runcmd.mk
+++ b/wrapper/runcmd.mk
@@ -1,15 +1,16 @@
 #!/usr/bin/make -f
-
 # Environment/command line variables:
 # - ARGS
 # - EXEC_DIR
 # - CWD
 
+MAKEFLAGS += --no-builtin-rules
 SHELL = bash -o pipefail
 
 export OUTPUT_DIR := $(realpath .)
 
-% : $(EXEC_PATH)/modules/%
-        cd $(CWD) && '$<' $(ARGS) | tee -- '$@' | sed 's,^,$@:,' >/dev/tty
+$(MAKECMDGOALS): % : $(EXEC_PATH)/modules/%
+	mkdir -p -- '$(@D)'
+	(cd $(CWD) && '$<' $(ARGS)) | tee -- '$@' | sed 's,^,$@:,' >&2
 
 include $(wildcard $(EXEC_PATH)/modules/*.mk)