patch 8.2.0459: cannot check if a function name is correctv8.2.0459

Problem:    Cannot check if a function name is correct.
Solution:   Add "?funcname" to exists().

1 files changed, 4 insertions, 1 deletions

diff --git a/src/testdir/check.vim b/src/testdir/check.vim
index d01dd81dd5..22c33c0ac7 100644
--- a/src/testdir/check.vim
+++ b/src/testdir/check.vim
@@ -25,9 +25,12 @@ func CheckOption(name)
   endif
 endfunc
 
-" Command to check for the presence of a function.
+" Command to check for the presence of a built-in function.
 command -nargs=1 CheckFunction call CheckFunction(<f-args>)
 func CheckFunction(name)
+  if !exists('?' .. a:name)
+    throw 'Checking for non-existent function ' .. a:name
+  endif
   if !exists('*' .. a:name)
     throw 'Skipped: ' .. a:name .. ' function missing'
   endif