commit ffdf8adfa8108d4765fdc68abbd2fe49a4292b25
author Bram Moolenaar <Bram@vim.org> Thu Oct 15 22:29:17 2020 +0200
committer Bram Moolenaar <Bram@vim.org> Thu Oct 15 22:29:17 2020 +0200
tree b82cf803d463b30816a79eb8a2d3a401259cf04b
parent 27491cd3ef86c10a2b64bcb657f29e1d0fccb183

patch 8.2.1852: map() returing zero for NULL list is unexpected

Problem:    map() returing zero for NULL list is unexpected.
Solution:   Return the empty list. (closes #7133)

src/testdir/test_blob.vim

diff --git a/src/testdir/test_blob.vim b/src/testdir/test_blob.vim
index 69b3504..3eff715 100644
--- a/src/testdir/test_blob.vim
+++ b/src/testdir/test_blob.vim
@@ -271,6 +271,7 @@
 
 " filter() item in blob
 func Test_blob_filter()
+  call assert_equal(test_null_blob(), filter(test_null_blob(), '0'))
   call assert_equal(0z, filter(0zDEADBEEF, '0'))
   call assert_equal(0zADBEEF, filter(0zDEADBEEF, 'v:val != 0xDE'))
   call assert_equal(0zDEADEF, filter(0zDEADBEEF, 'v:val != 0xBE'))