commit f88a5bc10232cc3fac92dba4e8455f4c14311f8e
author Bram Moolenaar <Bram@vim.org> Mon May 21 13:28:44 2018 +0200
committer Bram Moolenaar <Bram@vim.org> Mon May 21 13:28:44 2018 +0200
tree b4f2ad73bb4be2f42477dc5811de46ccb001e8ee
parent 6bff719f7e472e918c60aa336de03e799b806c4f

patch 8.1.0011: maparg() and mapcheck() confuse empty and non-existing

Problem:    maparg() and mapcheck() confuse empty and non-existing.
Solution:   Return <Nop> for an existing non-empty mapping. (closes #2940)

src/testdir/test_maparg.vim

diff --git a/src/testdir/test_maparg.vim b/src/testdir/test_maparg.vim
index 9ad8383..0fb878b 100644
--- a/src/testdir/test_maparg.vim
+++ b/src/testdir/test_maparg.vim
@@ -29,9 +29,13 @@
         \ maparg('foo', '', 0, 1))
 
   map abc x<char-114>x
-  call assert_equal(maparg('abc'), "xrx")
+  call assert_equal("xrx", maparg('abc'))
   map abc y<S-char-114>y
-  call assert_equal(maparg('abc'), "yRy")
+  call assert_equal("yRy", maparg('abc'))
+
+  map abc <Nop>
+  call assert_equal("<Nop>", maparg('abc'))
+  unmap abc
 endfunction
 
 function Test_range_map()