commit f5d52c90e0f2f51622a911b646024b2ad1225ed4
author Bram Moolenaar <Bram@vim.org> Sat Jul 31 22:51:10 2021 +0200
committer Bram Moolenaar <Bram@vim.org> Sat Jul 31 22:51:10 2021 +0200
tree 8d58b16c1b184809e49d002d5279e59ee6bcebd7
parent 9e0ee590197d74f94b7127bf0e033e4f83cf3762

patch 8.2.3263: Vim9: "..=" does not accept same types as the ".." operator

Problem:    Vim9: "..=" does not accept same types as the ".." operator.
Solution:   Convert value to string like ".." does. (issue #8664)

src/testdir/test_vim9_assign.vim

diff --git a/src/testdir/test_vim9_assign.vim b/src/testdir/test_vim9_assign.vim
index b2f8fec..97983ef 100644
--- a/src/testdir/test_vim9_assign.vim
+++ b/src/testdir/test_vim9_assign.vim
@@ -239,6 +239,32 @@
   END
 enddef
 
+let g:someNumber = 43
+
+def Test_assign_concat()
+  var lines =<< trim END
+    var s = '-'
+    s ..= 99
+    s ..= true
+    s ..= '-'
+    s ..= v:null
+    s ..= g:someNumber
+    assert_equal('-99true-null43', s)
+  END
+  CheckDefAndScriptSuccess(lines)
+
+  lines =<< trim END
+    var s = '-'
+    s ..= [1, 2]
+  END
+  CheckDefAndScriptFailure2(lines, 'E1105: Cannot convert list to string', 'E734: Wrong variable type for .=', 2)
+  lines =<< trim END
+    var s = '-'
+    s ..= {a: 2}
+  END
+  CheckDefAndScriptFailure2(lines, 'E1105: Cannot convert dict to string', 'E734: Wrong variable type for .=', 2)
+enddef
+
 def Test_assign_register()
   var lines =<< trim END
     @c = 'areg'

src/testdir/test_vim9_disassemble.vim

diff --git a/src/testdir/test_vim9_disassemble.vim b/src/testdir/test_vim9_disassemble.vim
index 1d100e0..b151cb4 100644
--- a/src/testdir/test_vim9_disassemble.vim
+++ b/src/testdir/test_vim9_disassemble.vim
@@ -1254,7 +1254,7 @@
         'res ..= str\_s*' ..
         '\d\+ LOAD $0\_s*' ..
         '\d\+ LOAD $2\_s*' ..
-        '\d\+ CHECKTYPE string stack\[-1\]\_s*' ..
+        '\d 2STRING_ANY stack\[-1\]\_s*' ..
         '\d\+ CONCAT\_s*' ..
         '\d\+ STORE $0\_s*' ..
         'endfor\_s*' ..