add a tree plugin to rvs, but I made a ton of other changes to get

things working and facilitate this

23 files changed, 356 insertions, 56 deletions

diff --git a/plugins/comments/bin/comment.sh b/plugins/comments/bin/comment.sh
index fbe5689..0be99e5 100644
--- a/plugins/comments/bin/comment.sh
+++ b/plugins/comments/bin/comment.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
-name='rvs @ID@ commit'
+name='comment'
 ver=0.1
-#  Copyright (C) 2009-2010 Luke Shumaker
+#  Copyright (C) 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
@@ -17,8 +17,10 @@ ver=0.1
 #  along with this program;  see the file COPYING.
 #  If not, see <http://www.gnu.org/licenses>.
 
-if [ "$RVS_LEVEL" = '0' ]; then
-	id=`cat $TMPDIR/commit/files`
-	"$RVS" tag "$id" wch
-fi
+usage="usage: $RVS $name ID"
+id="${1?"$usage"}"
+
+file="$REPO/@ID@/$id"
+mkdir -p "`dirname "$file"`"
+editor "$file" >> /dev/stderr
 
diff --git a/plugins/comments/bin/commit.sh b/plugins/comments/bin/commit.sh
index 7a6e619..4ef2c5d 100644
--- a/plugins/comments/bin/commit.sh
+++ b/plugins/comments/bin/commit.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
 name='rvs @ID@ commit'
 ver=0.1
-#  Copyright (C) 2009-2010 Luke Shumaker
+#  Copyright (C) 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
@@ -18,7 +18,8 @@ ver=0.1
 #  If not, see <http://www.gnu.org/licenses>.
 
 if [ "$RVS_LEVEL" = '0' ]; then
-	id=`cat $TMPDIR/commit/files`
+	id=`cat "$TMPDIR/commit/files"`
 	"$RVS" comment "$id"
 fi
+cat "$TMPDIR/commit/files"
 
diff --git a/plugins/comments/info.mk.in b/plugins/comments/info.mk.in
index 7aa15d1..144b832 100644
--- a/plugins/comments/info.mk.in
+++ b/plugins/comments/info.mk.in
@@ -1,3 +1,5 @@
 name = comments
 ver = 0.1
 priority = 1
+depends = >files
+
diff --git a/plugins/files/bin/blob-gethash.sh b/plugins/files/bin/blob-gethash.sh
new file mode 100644
index 0000000..b790d28
--- /dev/null
+++ b/plugins/files/bin/blob-gethash.sh
@@ -0,0 +1,26 @@
+#!/bin/sh
+name='blob-gethash'
+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>.
+
+. "$LIBDIR/@ID@/stdio"
+
+usage="ID"
+id="`getvar "$1"`"
+
+echo $id | sed 's:.*/::'
+
diff --git a/plugins/files/bin/blob-gettype.sh b/plugins/files/bin/blob-gettype.sh
new file mode 100644
index 0000000..3378506
--- /dev/null
+++ b/plugins/files/bin/blob-gettype.sh
@@ -0,0 +1,26 @@
+#!/bin/sh
+name='blob-gettype'
+ver=0.9
+#  Copyright (C) 2009-2010 Luke Shumaker
+#  
+#  This program is free software; you can redistribute it and/or
+#  modify it under the terms of the GNU General Public License as
+#  published by the Free Software Foundation; either version 2 of the
+#  License, or (at your option) any later version.
+#  
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+#  General Public License for more details.
+#  
+#  You should have received a copy of the GNU General Public License
+#  along with this program;  see the file COPYING.
+#  If not, see <http://www.gnu.org/licenses>.
+
+. "$LIBDIR/@ID@/stdio"
+
+usage="ID"
+id="`getvar "$1"`"
+
+echo $id | sed 's:/.*::'
+
diff --git a/plugins/files/bin/commit.d.sh b/plugins/files/bin/commit.d.sh
index 0da1efb..d7e48f9 100644
--- a/plugins/files/bin/commit.d.sh
+++ b/plugins/files/bin/commit.d.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
-name='rvs files commit.d'
+name='commit.d'
 ver=0.9
-#  Copyright (C) 2009 Luke Shumaker
+#  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
@@ -19,14 +19,22 @@ ver=0.9
 
 . "$LIBDIR/@ID@/stdio"
 
-# commit.d DIRNAME
-dir="${1?'usage: commit.d DIRNAME'}"
+usage="DIRNAME"
+dir="`getvar "$1"`"
+
 tmp=`mktemp`
+t='	';
 
 cd "$dir"
 for file in *; do
-	id=`"$RVS" commit "$file"`
-	echo "$file:$id" >> "$tmp"
+	p="`stat "$file" -c'%a'     `" # permissions
+	o="`stat "$file" -c'%u (%U)'`" # owner
+	g="`stat "$file" -c'%g (%G)'`" # group
+	i="`"$RVS" commit "$file"`"    # ID
+	n="$file"                      # name
+	
+	#     %p  %o  %g  %i  %n
+	echo "$p$t$o$t$g$t$i$t$n" >> "$tmp"
 done
 
 "$RVS" commit.f "$tmp" d
diff --git a/plugins/files/bin/commit.f.sh b/plugins/files/bin/commit.f.sh
index 17de155..c27005b 100644
--- a/plugins/files/bin/commit.f.sh
+++ b/plugins/files/bin/commit.f.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
-name='rvs files commit.f'
+name='commit.f'
 ver=0.9
-#  Copyright (C) 2009 Luke Shumaker
+#  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
@@ -17,11 +17,10 @@ ver=0.9
 #  along with this program;  see the file COPYING.
 #  If not, see <http://www.gnu.org/licenses>.
 
-#. "$LIBDIR/@ID@/stdio"
+. "$LIBDIR/@ID@/stdio"
 
-# commit.f FILENAME
-usage="usage: $RVS commit.f FILENAME [PREFIX]"
-file="${1?"$usage"}"
+usage="FILENAME [PREFIX]"
+file="`getvar "$1"`"
 prefix="${2-f}"
 
 hash=`sha1sum $file | sed "s/ .*$//"`
diff --git a/plugins/files/bin/commit.sh b/plugins/files/bin/commit.sh
index e8db1eb..0bb8233 100644
--- a/plugins/files/bin/commit.sh
+++ b/plugins/files/bin/commit.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-name='rvs filecontent commit'
+name='commit'
 ver=0.9
 #  Copyright (C) 2009-2010 Luke Shumaker
 #  
@@ -19,9 +19,9 @@ ver=0.9
 
 . "$LIBDIR/@ID@/stdio"
 
-# commit FILE
+usage="[FILE]"
 file=${1-.} # take arg1 as the file, default to the current directory
 
-type=`"$RVS" gettype "$file"`
+type=`"$RVS" file-gettype "$file"`
 "$RVS" "commit.$type" "$file"
 
diff --git a/plugins/files/bin/gettype.sh b/plugins/files/bin/file-gettype.sh
index 84eb9da..2a1e0ca 100644
--- a/plugins/files/bin/gettype.sh
+++ b/plugins/files/bin/file-gettype.sh
@@ -1,5 +1,5 @@
 #!/bin/sh
-name='rvs @ID@ gettype'
+name='file-gettype'
 ver=0.9
 #  Copyright (C) 2009-2010 Luke Shumaker
 #  
@@ -19,8 +19,8 @@ ver=0.9
 
 . "$LIBDIR/@ID@/stdio"
 
-usage="usage: $RVS gettype FILE"
-file=${1?"$usage"}
+usage="FILE"
+file="`getvar "$1"`"
 
 if [ ! -e "$file" ]; then
 	fatal "file \`$file' does not exist";
diff --git a/plugins/files/bin/get.d.sh b/plugins/files/bin/get.d.sh
index 1a001d3..89bd92a 100644
--- a/plugins/files/bin/get.d.sh
+++ b/plugins/files/bin/get.d.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
-name='rvs files get.d'
+name='get.d'
 ver=0.9
-#  Copyright (C) 2009 Luke Shumaker
+#  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
@@ -17,11 +17,11 @@ ver=0.9
 #  along with this program;  see the file COPYING.
 #  If not, see <http://www.gnu.org/licenses>.
 
-#. "$LIBDIR/@ID@/stdio"
+. "$LIBDIR/@ID@/stdio"
 
-usage="usage: $RVS get.d DIRNAME ID"
-dir="${1?"$usage"}"
- id="${2?"$usage"}"
+usage="DIRNAME ID"
+dir="`getvar "$1"`"
+ id="`getvar "$2"`"
 
 tmp=`mktemp`
 "$RVS" get.f "$tmp" "$id"
@@ -32,9 +32,14 @@ mkdir -p "$dir"
 cd "$dir"
 rm -rf ./*
 while read line; do
-	  _id="`echo "$line" | sed 's/^.*://'`"
-	_name="`echo "$line" | sed 's@:'"$_id"'$@@'`"
-	"$RVS" get "$_name" "$_id"
+	p="`echo "$line" | cut -f1`"  # permissions
+	o="`echo "$line" | cut -f2`"  # owner
+	g="`echo "$line" | cut -f3`"  # group
+	i="`echo "$line" | cut -f4`"  # ID
+	n="`echo "$line" | cut -f5-`" # name
+	"$RVS" get "$n" "$i"
+	#chmod "$p" "$n"
+	#chown "$o:$g" "$n"
 done < "$tmp"
 
 rm "$tmp"
diff --git a/plugins/files/bin/get.f.sh b/plugins/files/bin/get.f.sh
index b137911..00508ab 100644
--- a/plugins/files/bin/get.f.sh
+++ b/plugins/files/bin/get.f.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
-name='rvs files get.f'
+name='get.f'
 ver=0.9
-#  Copyright (C) 2009 Luke Shumaker
+#  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
@@ -17,11 +17,11 @@ ver=0.9
 #  along with this program;  see the file COPYING.
 #  If not, see <http://www.gnu.org/licenses>.
 
-#. "$LIBDIR/@ID@/stdio"
+. "$LIBDIR/@ID@/stdio"
 
-usage="usage: $RVS get.f FILENAME ID"
-name="${1?"$usage"}"
-  id="${2?"$usage"}"
+usage="FILENAME ID"
+name="`getvar "$1"`"
+  id="`getvar "$2"`"
 
 install -T "$REPO/@ID@/$id" "$name"
 
diff --git a/plugins/files/bin/get.sh b/plugins/files/bin/get.sh
index d3f046c..639ac57 100644
--- a/plugins/files/bin/get.sh
+++ b/plugins/files/bin/get.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
-name='rvs filecontent get'
+name='get'
 ver=0.9
-#  Copyright (C) 2009 Luke Shumaker
+#  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
@@ -17,16 +17,16 @@ ver=0.9
 #  along with this program;  see the file COPYING.
 #  If not, see <http://www.gnu.org/licenses>.
 
-#. "$LIBDIR/@ID@/stdio"
+. "$LIBDIR/@ID@/stdio"
 
-usage="usage: $RVS get FILENAME ID"
-name="${1?"$usage"}"
-  id="${2?"$usage"}"
+usage="FILENAME ID"
+name="`getvar "$1"`"
+  id="`getvar "$2"`"
 
 file="$REPO/@ID@/$id"
 
-type="`echo $id | sed 's:/.*::'`"
-#hash="`echo $id | sed 's:.*/::'`"
+type="`"$RVS" blob-gettype "$id"`"
+#hash="`"$RVS" blob-gethash "$id"`"
 
 "$RVS" "get.$type" "$name" "$id"
 
diff --git a/plugins/files/bin/ls.sh b/plugins/files/bin/ls.sh
new file mode 100644
index 0000000..ae225cf
--- /dev/null
+++ b/plugins/files/bin/ls.sh
@@ -0,0 +1,50 @@
+#!/usr/bin/env bash
+name='ls'
+ver=0.1
+#  Copyright (C) 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>.
+
+. "$LIBDIR/@ID@/stdio"
+
+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/plugins/files/info.mk.in b/plugins/files/info.mk.in
index 7552306..fac7862 100644
--- a/plugins/files/info.mk.in
+++ b/plugins/files/info.mk.in
@@ -1,3 +1,5 @@
 name = files
 ver = 0.9
 priority = 0
+depends = 
+
diff --git a/plugins/files/lib/stdio.sh b/plugins/files/lib/stdio.sh
index 09d2ec7..974e98e 100644
--- a/plugins/files/lib/stdio.sh
+++ b/plugins/files/lib/stdio.sh
@@ -1,7 +1,7 @@
 #!/bin/sh
-#name='rvs @ID@ stdio'
+#name='stdio'
 #ver=0.9
-#  Copyright (C) 2009 Luke Shumaker
+#  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
@@ -41,18 +41,26 @@ fatal () {
 error() {
 	warn "$1"
 	cat << __error__ >> /dev/stderr
-Usage: $name $usage
+Usage: $RVS $name $usage
 
-Try \`$name --help' for more options.
+Try \`$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__
-$name is copyright (C) 2009 Luke Shumaker
+$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
diff --git a/plugins/tags/bin/commit.sh b/plugins/tags/bin/commit.sh
index e69de29..3d37ed5 100644
--- a/plugins/tags/bin/commit.sh
+++ b/plugins/tags/bin/commit.sh
@@ -0,0 +1,25 @@
+#!/bin/sh
+name='rvs @ID@ commit'
+ver=0.1
+#  Copyright (C) 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>.
+
+if [ "$RVS_LEVEL" = '0' ]; then
+	id=`cat "$TMPDIR/commit/files"`
+	"$RVS" tag "$id" wch
+fi
+cat "$TMPDIR/commit/files"
+
diff --git a/plugins/tags/info.mk.in b/plugins/tags/info.mk.in
index 1828b51..9a6ba49 100644
--- a/plugins/tags/info.mk.in
+++ b/plugins/tags/info.mk.in
@@ -1,3 +1,5 @@
 name = tags
 ver = 0.1
-priority = 2
+priority = 3
+depends = >files
+
diff --git a/plugins/tree/bin/addparent.d.sh b/plugins/tree/bin/addparent.d.sh
new file mode 100644
index 0000000..ed21085
--- /dev/null
+++ b/plugins/tree/bin/addparent.d.sh
@@ -0,0 +1,44 @@
+#!/bin/sh
+name='addparent.d'
+ver=0.1
+#  Copyright (C) 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>.
+
+usage="usage: $RVS $name CHILD PARENT"
+ child=${1?"$usage"}
+parent=${2?"$usage"}
+
+tc="`mktemp`"
+tp="`mktemp`"
+
+"$RVS" ls "$child"  '%n	%i' > "$tc"
+"$RVS" ls "$parent" '%n	%i' > "$tc"
+
+while read line; do
+	name="`echo "$line" | sed 's:\t[a-z]/[0-9a-f]$::'`"
+	 nID="`echo "$line" | sed 's:^.*\t::'`"
+	 oID="`sed -n 's:^${name/':'/'\:'}\t\([a-z]/[0-9a-f]\)$:\1:p'`"
+	
+	if [ -n "$oID" ] {
+		nT="`"$RVS" blob-gettype "$nID"`"
+		oT="`"$RVS" blob-gettype "$oID"`"
+		if [ "$nT" = "$oT" ]; then
+			"$RVS" addparent "$nID" "$oID"
+		fi
+	}
+done < "$tc"
+
+"$RVS" addparent.f "$child" "$parent"
diff --git a/plugins/tree/bin/addparent.f.sh b/plugins/tree/bin/addparent.f.sh
new file mode 100644
index 0000000..61b4f92
--- /dev/null
+++ b/plugins/tree/bin/addparent.f.sh
@@ -0,0 +1,27 @@
+#!/bin/sh
+name='addparent.f'
+ver=0.1
+#  Copyright (C) 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>.
+
+usage="usage: $RVS $name CHILD PARENT"
+ child=${1?"$usage"}
+parent=${2?"$usage"}
+
+file="$REPO/tree/$child/$parent"
+mkdir -p "`dirname "$file"`"
+echo "$parent" > "$file"
+
diff --git a/plugins/tree/bin/addparent.sh b/plugins/tree/bin/addparent.sh
new file mode 100644
index 0000000..af60e5a
--- /dev/null
+++ b/plugins/tree/bin/addparent.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+name='addparent'
+ver=0.1
+#  Copyright (C) 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>.
+
+usage="usage: $RVS $name CHILD PARENT"
+ child=${1?"$usage"}
+parent=${2?"$usage"}
+
+ct="`"$RVS" blob-gettype "$child"`"
+pt="`"$RVS" blob-gettype "$parent"`"
+
+if [ "$ct" = "$pt" ]; then
+	"$RVS" "addparent.$ct" "$child" "$parent"
+else
+	error "CHILD and PARENT must be type of the same type"
+fi
+
diff --git a/plugins/tree/bin/delparent.f.sh b/plugins/tree/bin/delparent.f.sh
new file mode 100644
index 0000000..e53df9b
--- /dev/null
+++ b/plugins/tree/bin/delparent.f.sh
@@ -0,0 +1,34 @@
+#!/bin/sh
+name='delparent.f'
+ver=0.1
+#  Copyright (C) 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>.
+
+usage="usage: $RVS $name CHILD PARENT"
+ child=${1?"$usage"}
+parent=${2?"$usage"}
+
+file="$REPO/tree/$child/$parent"
+rm "$file"
+if [ -z "$(ls "`dirname "$file"`")" ]; then 
+	rmdir "`dirname "$file"`"
+fi
+
+ dir="$REPO/tree/$child"
+if [ -z "$(ls "`dirname "$dir"`")" ]; then 
+	rmdir "`dirname "$dir"`"
+fi
+
diff --git a/plugins/tree/info.mk.in b/plugins/tree/info.mk.in
new file mode 100644
index 0000000..be9bc3b
--- /dev/null
+++ b/plugins/tree/info.mk.in
@@ -0,0 +1,5 @@
+name = tree
+ver = 0.1
+priority = 1
+depends = >files <tags
+
diff --git a/wrapper/rvs.sh b/wrapper/rvs.sh
index e2e94e6..c2e3594 100644
--- a/wrapper/rvs.sh
+++ b/wrapper/rvs.sh
@@ -56,6 +56,8 @@ _repo() {
 			_error "no $name repository found"
 		fi
 		cd "$owd"
+	else
+		echo "$REPO"
 	fi
 }
 
@@ -75,7 +77,7 @@ _runcom() {
 		mkdir -p "$baseTMPDIR"
 		export TMPDIR=`mktemp -d --tmpdir="$baseTMPDIR"`
 		
-		if [ -z "RVS_LEVEL" ]; then
+		if [ -z "$RVS_LEVEL" ]; then
 			export RVS_LEVEL=0;
 		else
 			export RVS_LEVEL=`expr $RVS_LEVEL + 1`