patch 9.1.0487: completed item not update on fuzzy completion

Problem:  completed item not update on fuzzy completion
Solution: reset compl_shown_match when at original match position
          (glepnir)

closes: #14955

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/insexpand.c b/src/insexpand.c
index fafa7a2..7b9a511 100644
--- a/src/insexpand.c
+++ b/src/insexpand.c
@@ -1222,6 +1222,7 @@
 {
     compl_T     *compl;
     compl_T     *shown_compl = NULL;
+    compl_T     *after_first_compl = NULL;
     int		did_find_shown_match = FALSE;
     int		shown_match_ok = FALSE;
     int		i;
@@ -1298,6 +1299,8 @@
 	    }
 	    else if (compl_fuzzy_match)
 	    {
+		if (i == 0)
+		    after_first_compl = compl;
 		// Update the maximum fuzzy score and the shown match
 		// if the current item's score is higher
 		if (compl->cp_score > max_fuzzy_score)
@@ -1318,6 +1321,8 @@
 		{
 		    shown_match_ok = TRUE;
 		    cur = 0;
+		    if (match_at_original_text(compl_shown_match))
+		      compl_shown_match = after_first_compl;
 		}
 	    }
 
diff --git a/src/testdir/test_ins_complete.vim b/src/testdir/test_ins_complete.vim
index c2cc484..9f689fe 100644
--- a/src/testdir/test_ins_complete.vim
+++ b/src/testdir/test_ins_complete.vim
@@ -2559,6 +2559,13 @@
   call feedkeys("S\<C-x>\<C-o>fb\<C-p>\<C-p>\<C-p>\<C-p>", 'tx')
   call assert_equal('fooBaz', g:word)
 
+  func Comp()
+    call complete(col('.'), ["fooBaz", "foobar", "foobala"])
+    return ''
+  endfunc
+  call feedkeys("i\<C-R>=Comp()\<CR>", 'tx')
+  call assert_equal('fooBaz', g:word)
+
   " respect noselect
   set completeopt+=noselect
   call feedkeys("S\<C-x>\<C-o>fb", 'tx')
@@ -2574,6 +2581,7 @@
   augroup! AAAAA_Group
   delfunc OnPumChange
   delfunc Omni_test
+  delfunc Comp
   unlet g:item
   unlet g:word
 endfunc
diff --git a/src/version.c b/src/version.c
index 1035b60..1a2f5d7 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    487,
+/**/
     486,
 /**/
     485,