javadoc: Implement -linkoffline two argument completion.

completions/java

@@ -250,7 +250,6 @@ _javadoc()
             return 0
             ;;
         -d|-link|-linkoffline)
-            # TODO: -linkoffline takes two arguments
             _filedir -d
             return 0
             ;;
@@ -260,6 +259,12 @@ _javadoc()
             ;;
     esac
 
+    # -linkoffline takes two arguments
+    if [[ $cword -gt 2 && ${words[$cword-2]} == -linkoffline ]]; then
+        _filedir -d
+        return
+    fi
+
     if [[ "$cur" == -* ]]; then
         COMPREPLY=( $( compgen -W '$( _parse_help "$1" -help )' -- "$cur" ) )
     else

test/lib/completions/javadoc.exp

@@ -12,8 +12,14 @@ setup
 
 
 assert_complete_any "javadoc "
+sync_after_int
 
 
+assert_complete {"bar bar.d/" foo.d/} "javadoc -linkoffline $::srcdir/fixtures/shared/default/"
+sync_after_int
+
+
+assert_complete {"bar bar.d/" foo.d/} "javadoc -nodeprecated -linkoffline foo $::srcdir/fixtures/shared/default/"
 sync_after_int