vim-patch:8.2.3684: blockwise insert does not handle autoindent properly

Problem:    Blockwise insert does not handle autoindent properly.
Solution:   Adjust text column for indent. (closes vim/vim#9229)
e9b0b40b79

src/nvim/ops.c

@@ -2311,6 +2311,13 @@ void op_insert(oparg_T *oap, long count1)
         }
       }
       bd.textcol = bd2.textcol;
+      /*
+       * If the insert was in the indent then include the indent
+       * change in the new text, otherwise don't.
+       */
+      if (did_indent && bd.textcol > ind_pre) {
+          bd.textcol += ind_post - ind_pre;
+      }
       bd.textlen = bd2.textlen;
     }
 

src/nvim/testdir/test_blockedit.vim

@@ -15,6 +15,33 @@ func Test_blockinsert_indent()
   bwipe!
 endfunc
 
+func Test_blockinsert_autoindent()
+  new
+  let lines =<< trim END
+      var d = {
+      a: () => 0,
+      b: () => 0,
+      c: () => 0,
+      }
+  END
+  call setline(1, lines)
+  filetype plugin indent on
+  setlocal sw=2 et ft=vim
+  setlocal indentkeys+=:
+  exe "norm! 2Gf)\<c-v>2jA: asdf\<esc>"
+  let expected =<< trim END
+      var d = {
+        a: (): asdf => 0,
+      b: (): asdf => 0,
+      c: (): asdf => 0,
+      }
+  END
+  call assert_equal(expected, getline(1, 5))
+
+  filetype off
+  bwipe!
+endfunc
+
 func Test_blockinsert_delete()
   new
   let _bs = &bs