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: #16908

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>

src/edit.c

@@ -2934,7 +2934,7 @@ stuff_inserted(
 	char_u	*p;
 
 	// look for the last ESC in 'insert'
-	for (p = insert->string + (insert->length - 1); p >= insert->string; --p)
+	for (p = insert->string + insert->length - 1; p >= insert->string; --p)
 	{
 	    if (*p == ESC)
 	    {
@@ -2942,12 +2942,16 @@ stuff_inserted(
 		break;
 	    }
 	}
+    }
+
+    if (insert->length > 0)
+    {
+	char_u	*p = insert->string + insert->length - 1;
 
 	// when the last char is either "0" or "^" it will be quoted if no ESC
 	// comes after it OR if it will insert more than once and "ptr"
 	// starts with ^D.	-- Acevedo
-	if (p >= insert->string
-	    && (*p == '0' || *p == '^')
+	if ((*p == '0' || *p == '^')
 		&& (no_esc || (*insert->string == Ctrl_D && count > 1)))
 	{
 	    last = *p;

src/getchar.c

@@ -204,7 +204,7 @@ get_recorded(void)
 get_inserted(void)
 {
     size_t len = 0;
-    char_u* str = get_buffcont(&redobuff, FALSE, &len);
+    char_u *str = get_buffcont(&redobuff, FALSE, &len);
     string_T ret = { str, len };
     return ret;
 }

src/testdir/test_put.vim

@@ -328,4 +328,31 @@ func Test_put_list()
   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
+
 " vim: shiftwidth=2 sts=2 expandtab

src/version.c

@@ -704,6 +704,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    1216,
 /**/
     1215,
 /**/