The xargs issue is AFAIU unrelated to the svn one and fixed in bash-completion 2.1, specifically by this commit:
http://anonscm.debian.org/gitweb/?p=bash-completion/bash-completion.git;a=commitdiff;h=2472fad _______________________________________________ Bash-completion-devel mailing list Bash-completion-devel@lists.alioth.debian.org http://lists.alioth.debian.org/cgi-bin/mailman/listinfo/bash-completion-devel