build.sh of r721 fails @ "sed: -e expression #1, char 28: unterminated `s' command"

MySQL & MariaDB Percona XtraBackup
1

building lp:percona-xtrabackup/2.1 from src,

cd percona-xtrabackup
bzr log | head
------------------------------------------------------------
revno: 721 [merge]
committer: Alexey Kopytov <akopytov&#64;gmail.com>
branch nick: 2.1
timestamp: Fri 2014-01-24 16:15:45 +0400
message:
Merged lp:~hrvojem/percona-xtrabackup/rn-2.1.7-update-2.1.
------------------------------------------------------------
revno: 720
committer: Alexey Kopytov <akopytov&#64;gmail.com>

per directions @

http://www.percona.com/doc/percona-xtrabackup/2.1/installation/compiling_xtrabackup.html

exec of build.sh fails,

AUTO_DOWNLOAD="yes" sh -x ./utils/build.sh mariadb100
...
+ local src=innobackupex.pl
+ local dst=innobackupex
+ echo 'Configuring innobackupex.pl to innobackupex'
Configuring innobackupex.pl to innobackupex
+ sed 's|&#64;XB_DISTRIBUTION&#64;|opensuse' 'project|g' innobackupex.pl
sed: -e expression #1, char 28: unterminated `s' command

checking in the script, the source of the error is,

...
XB_DISTRIBUTION=`lsb_release -i | \
sed -e 's/Distributor ID:[[:space:]]//' | \
tr '[:upper:]' '[:lower:]'`
...
echo "Configuring $src to $dst"
sed 's|&#64;XB_DISTRIBUTION&#64;|'$XB_DISTRIBUTION'|g' $src > $dst
...

where XB_DISTRIBTION, on my platform, ==

"opensuse project"

for,

lsb_release -a
LSB Version: core-2.0-noarch:core-3.2-noarch:core-4.0-noarch:core-2.0-x86_64:core-3.2-x86_64:core-4.0-x86_64:desktop-4.0-amd64:desktop-4.0-noarch:graphics-2.0-amd64:graphics-2.0-noarch:graphics-3.2-amd64:graphics-3.2-noarch:graphics-4.0-amd64:graphics-4.0-noarch
Distributor ID: openSUSE project
Description: openSUSE 12.3 (x86_64)
Release: 12.3
Codename: Dartmouth

should be a simple fix; not clear what $XB_DISTRIBUTION needs to be …