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-rw-r--r--src/testdir/test55.in11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/testdir/test55.in b/src/testdir/test55.in
index 7b6f684c..9e3c1168 100644
--- a/src/testdir/test55.in
+++ b/src/testdir/test55.in
@@ -442,6 +442,17 @@ let l = [0, 1, 2, 3]
:unlockvar 1 b:
:unlet! b:testvar
:"
+:$put ='No :let += of locked list variable:'
+:let l = ['a', 'b', 3]
+:lockvar 1 l
+:try
+: let l += ['x']
+: $put ='did :let +='
+:catch
+: $put =v:exception[:14]
+:endtry
+:$put =string(l)
+:"
:unlet l
:let l = [1, 2, 3, 4]
:lockvar! l