vim-patch:9.1.1216: Pasting the '.' register multiple times may not work

Problem:  Pasting the '.' register multiple times may work incorrectly
          when the last insert starts with Ctrl-D and ends with '0'.
          (after 9.1.1212)
Solution: Restore the missing assignment (zeertzjq).

closes: vim/vim#16908

61b3544424

src/nvim/edit.c

@@ -2708,20 +2708,21 @@ int stuff_inserted(int c, int count, int no_esc)
   }
 
   if (insert->size > 0) {
-    char *p;
     // look for the last ESC in 'insert'
-    for (p = insert->data + (insert->size - 1); p >= insert->data; p--) {
+    for (char *p = insert->data + insert->size - 1; p >= insert->data; p--) {
       if (*p == ESC) {
         insert->size = (size_t)(p - insert->data);
         break;
       }
     }
+  }
 
+  if (insert->size > 0) {
+    char *p = insert->data + insert->size - 1;
     // when the last char is either "0" or "^" it will be quoted if no ESC
     // comes after it OR if it will inserted more than once and "ptr"
     // starts with ^D.  -- Acevedo
-    if (p >= insert->data
-        && (*p == '0' || *p == '^')
+    if ((*p == '0' || *p == '^')
         && (no_esc || (*insert->data == Ctrl_D && count > 1))) {
       last = *p;
       insert->size--;

test/old/testdir/test_put.vim

@@ -328,4 +328,31 @@ func Test_put_list()
   put! =l
   call assert_equal(['a', 'b', 'c', ''], getline(1, '$'))
   bw!
+endfunc
+
+" Test pasting the '.' register
+func Test_put_inserted()
+  new
+
+  for s in ['', '…', '0', '^', '+0', '+^', '…0', '…^']
+    call setline(1, 'foobar')
+    exe $"normal! A{s}\<Esc>"
+    call assert_equal($'foobar{s}', getline(1))
+    normal! ".p
+    call assert_equal($'foobar{s}{s}', getline(1))
+    normal! ".2p
+    call assert_equal($'foobar{s}{s}{s}{s}', getline(1))
+  endfor
+
+  for s in ['0', '^', '+0', '+^', '…0', '…^']
+    call setline(1, "\t\t\t\t\tfoobar")
+    exe $"normal! A\<C-D>{s}\<Esc>"
+    call assert_equal($"\t\t\t\tfoobar{s}", getline(1))
+    normal! ".p
+    call assert_equal($"\t\t\tfoobar{s}{s}", getline(1))
+    normal! ".2p
+    call assert_equal($"\tfoobar{s}{s}{s}{s}", getline(1))
+  endfor
+
+  bwipe!
 endfunc