commit 4270d8b7626ff8a7006f6a09c89bc446a3f89d1e
author Bram Moolenaar <Bram@vim.org> Sat Aug 07 16:30:42 2021 +0200
committer Bram Moolenaar <Bram@vim.org> Sat Aug 07 16:30:42 2021 +0200
tree c8b632c8862523490938e53418440ac393b46788
parent fbeefb1b87b0d52a095c08fee47b62d290bf4c33

patch 8.2.3310: Vim9: unpack assignment does not mention source of type error

Problem:    Vim9: unpack assignment does not mention source of type error.
Solution:   Mention the argument number. (closes #8719)

src/testdir/test_vim9_assign.vim

diff --git a/src/testdir/test_vim9_assign.vim b/src/testdir/test_vim9_assign.vim
index 8491a4d..a96e97c 100644
--- a/src/testdir/test_vim9_assign.vim
+++ b/src/testdir/test_vim9_assign.vim
@@ -414,6 +414,22 @@
     [x, y] = g:values
   END
   CheckDefExecAndScriptFailure(lines, 'E1163: Variable 2: type mismatch, expected string but got number')
+
+  lines =<< trim END
+    var x: number
+    var y: number
+    var z: string
+    [x, y, z] = [1, 2, 3]
+  END
+  CheckDefAndScriptFailure(lines, 'E1163: Variable 3: type mismatch, expected string but got number')
+
+  lines =<< trim END
+    var x: number
+    var y: string
+    var z: string
+    [x, y, z] = [1, '2', 3]
+  END
+  CheckDefExecAndScriptFailure(lines, 'E1163: Variable 3: type mismatch, expected string but got number')
 enddef
 
 def Test_assign_linebreak()

src/testdir/test_vim9_disassemble.vim

diff --git a/src/testdir/test_vim9_disassemble.vim b/src/testdir/test_vim9_disassemble.vim
index 253fe1b..9eaa864 100644
--- a/src/testdir/test_vim9_disassemble.vim
+++ b/src/testdir/test_vim9_disassemble.vim
@@ -441,10 +441,10 @@
         '\d CHECKTYPE list<any> stack\[-1\]\_s*' ..
         '\d CHECKLEN >= 2\_s*' ..
         '\d\+ ITEM 0\_s*' ..
-        '\d\+ CHECKTYPE string stack\[-1\]\_s*' ..
+        '\d\+ CHECKTYPE string stack\[-1\] arg 1\_s*' ..
         '\d\+ STORE $0\_s*' ..
         '\d\+ ITEM 1\_s*' ..
-        '\d\+ CHECKTYPE string stack\[-1\]\_s*' ..
+        '\d\+ CHECKTYPE string stack\[-1\] arg 2\_s*' ..
         '\d\+ STORE $1\_s*' ..
         '\d\+ SLICE 2\_s*' ..
         '\d\+ STORE $2\_s*' ..