1 files changed, 41 insertions, 3 deletions
diff --git a/src/nvim/testdir/test_expr.vim b/src/nvim/testdir/test_expr.vim
index 03a9155512..ad967c528c 100644
--- a/src/nvim/testdir/test_expr.vim
+++ b/src/nvim/testdir/test_expr.vim
@@ -78,7 +78,7 @@ endfunc
 func Test_loop_over_null_list()
   let null_list = submatch(1, 1)
   for i in null_list
-    call assert_true(0, 'should not get here')
+    call assert_report('should not get here')
   endfor
 endfunc
 
@@ -98,6 +98,35 @@ func Test_special_char()
   call assert_fails('echo "\<C-">')
 endfunc
 
+func Test_option_value()
+  " boolean
+  set bri
+  call assert_equal(1, &bri)
+  set nobri
+  call assert_equal(0, &bri)
+
+  " number
+  set ts=1
+  call assert_equal(1, &ts)
+  set ts=8
+  call assert_equal(8, &ts)
+
+  " string
+  exe "set cedit=\<Esc>"
+  call assert_equal("\<Esc>", &cedit)
+  set cpo=
+  call assert_equal("", &cpo)
+  set cpo=abcdefi
+  call assert_equal("abcdefi", &cpo)
+  set cpo&vim
+endfunc
+
+function Test_printf_64bit()
+  if has('num64')
+    call assert_equal("123456789012345", printf('%d', 123456789012345))
+  endif
+endfunc
+
 func Test_setmatches()
   hi def link 1 Comment
   hi def link 2 PreProc
@@ -355,9 +384,10 @@ func Test_substitute_expr()
 	\ {-> submatch(2) . submatch(3) . submatch(1)}, ''))
 
   func Recurse()
-    return substitute('yyy', 'y*', {-> g:val}, '')
+    return substitute('yyy', 'y\(.\)y', {-> submatch(1)}, '')
   endfunc
-  call assert_equal('--', substitute('xxx', 'x*', {-> '-' . Recurse() . '-'}, ''))
+  " recursive call works
+  call assert_equal('-y-x-', substitute('xxx', 'x\(.\)x', {-> '-' . Recurse() . '-' . submatch(1) . '-'}, ''))
 endfunc
 
 func Test_invalid_submatch()
@@ -389,6 +419,9 @@ func Test_function_with_funcref()
   let s:fref = function(s:f)
   call assert_equal(v:t_string, s:fref('x'))
   call assert_fails("call function('s:f')", 'E700:')
+
+  call assert_fails("call function('foo()')", 'E475:')
+  call assert_fails("call function('foo()')", 'foo()')
 endfunc
 
 func Test_funcref()
@@ -406,3 +439,8 @@ func Test_funcref()
   call assert_equal(2, OneByRef())
   call assert_fails('echo funcref("{")', 'E475:')
 endfunc
+
+func Test_empty_concatenate()
+  call assert_equal('b', 'a'[4:0] . 'b')
+  call assert_equal('b', 'b' . 'a'[4:0])
+endfunc