jh_linkjars: Fix bug with multiple dep fields and newlines

Signed-off-by: Niels Thykier <niels@thykier.net>

debian/changelog

 javatools (0.67) UNRELEASED; urgency=medium
 
   * jh_installibs: Fix error when jar file symlink already exist.
+  * jh_linkjars: Handle multiple dependency fields and newlines in
+    them more gracefully.
 
  -- Niels Thykier <niels@thykier.net>  Fri, 21 Sep 2018 16:02:23 +0000
 

jh_linkjars

@@ -73,11 +73,13 @@ init(options => {
 sub parse_deps_fields {
     my ($field) = @_;
     my @packages;
-    $field =~ s/^\s++//;
-    $field =~ s/\s++$//;
+    $field =~ s/\r?\n/,/g;
+    $field =~ s/^\s*+,?//;
+    $field =~ s/,?\s*+$//;
     for my $clause (split(m/\s*+[,|]\s*+/, $field)) {
+        next if $clause =~ m/^\s*$/;
         # Drop everything after [, ( or <.
-        $clause =~ s/\s*+[\(\[\<].*$//;
+        $clause =~ s/\s*+[[<(].*$//;
         push(@packages, $clause);
     }
     return @packages;