Make --debbuildopts additive

Change --debbuildopts to be additive and reset the list of options to
the empty list if --debbuildopts "" is passed.  Update docs and add NEWS
entry.

1 files changed, 3 insertions, 1 deletions

diff --git a/pbuilder-checkparams b/pbuilder-checkparams
index ef81878..f8f02e8 100755
--- a/pbuilder-checkparams
+++ b/pbuilder-checkparams
@@ -142,7 +142,8 @@ while [ -n "$1" ]; do
 	    shift; shift;
 	    ;;
 	--debbuildopts)
-	    DEBBUILDOPTS="$2";
+	    # append to DEBBUILDOPTS or reset to empty if $2 isn't set
+	    DEBBUILDOPTS="${2:+$DEBBUILDOPTS $2}";
 	    shift; shift;
 	    ;;
 	--logfile)
@@ -173,6 +174,7 @@ while [ -n "$1" ]; do
 	    ;;
 	--binary-arch)
 	    BINARY_ARCH="yes"
+	    # XXX this might be overwriten by --debbuildopts ""
 	    DEBBUILDOPTS="${DEBBUILDOPTS} -B"
 	    shift;
 	    ;;