file.c: File.empty?

* file.c (Init_File): add alias File.empty? to File.zero?.
  [Feature #9969]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54559 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 0 deletions

diff --git a/file.c b/file.c
index bcadaefd9e..f2e299623f 100644
--- a/file.c
+++ b/file.c
@@ -5886,6 +5886,7 @@ Init_File(void)
     define_filetest_function("executable_real?", rb_file_executable_real_p, 1);
     define_filetest_function("file?", rb_file_file_p, 1);
     define_filetest_function("zero?", rb_file_zero_p, 1);
+    define_filetest_function("empty?", rb_file_zero_p, 1);
     define_filetest_function("size?", rb_file_size_p, 1);
     define_filetest_function("size", rb_file_s_size, 1);
     define_filetest_function("owned?", rb_file_owned_p, 1);