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-rw-r--r--src/testdir/test_eval_stuff.vim6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/testdir/test_eval_stuff.vim b/src/testdir/test_eval_stuff.vim
index 02e7e14fd..1490ffbc5 100644
--- a/src/testdir/test_eval_stuff.vim
+++ b/src/testdir/test_eval_stuff.vim
@@ -135,6 +135,12 @@ func Test_string_concatenation()
let a = 'a'
let a..=b
call assert_equal('ab', a)
+
+ if has('float')
+ let a = 'A'
+ let b = 1.234
+ call assert_fails('echo a .. b', 'E806:')
+ endif
endfunc
" Test fix for issue #4507