* update documentation and fix @package issue in binary_to_source

diff --git a/Debbugs/Packages.pm b/Debbugs/Packages.pm
index 6f12a3032e09b7b416d1320b770b16510957cd3f..0a16c04084dc0ca9125b994e7beda5545539023b 100644 (file)
--- a/Debbugs/Packages.pm
+++ b/Debbugs/Packages.pm
@@ -139,6 +139,9 @@ arch(s), and verion(s) passed.
 In SCALAR context, only the corresponding source packages are
 returned, concatenated with ', ' if necessary.
 
+If no source can be found, returns undef in scalar context, or the
+empty list in list context.
+
 =over
 
 =item binary -- binary package name(s) as a SCALAR or ARRAYREF
@@ -266,9 +269,9 @@ sub binary_to_source{
            tie %_sourcetobinary, MLDBM => $config{source_binary_map}, O_RDONLY or
                die "Unable top open $gSourceBinaryMap for reading";
        }
-       for my $package (@package) {
-           if (exists $_sourcetobinary{$package}) {
-               push @source,[$package,$_] for keys %{$_sourcetobinary{$package}};
+       for my $maybe_sourcepkg (@binary) {
+           if (exists $_sourcetobinary{$maybe_sourcepkg}) {
+               push @source,[$maybe_sourcepkg,$_] for keys %{$_sourcetobinary{$maybe_sourcepkg}};
            }
        }
        # if @source is still empty here, it's probably a non-existant