patch 8.2.4988: textprop in wrong position when replacing multi-byte chars

Problem:    Textprop in wrong position when replacing multi-byte chars.
Solution:   Adjust textprop position. (closes #10461)
diff --git a/src/change.c b/src/change.c
index 47411ca..2d01f92 100644
--- a/src/change.c
+++ b/src/change.c
@@ -1118,7 +1118,12 @@
     ml_replace(lnum, newp, FALSE);
 
     // mark the buffer as changed and prepare for displaying
-    inserted_bytes(lnum, col, newlen - oldlen);
+    changed_bytes(lnum, col);
+#ifdef FEAT_PROP_POPUP
+    if (curbuf->b_has_textprop && newlen != oldlen)
+	adjust_prop_columns(lnum, col, newlen - oldlen,
+				    State & REPLACE_FLAG ? APC_SUBSTITUTE : 0);
+#endif
 
     // If we're in Insert or Replace mode and 'showmatch' is set, then briefly
     // show the match for right parens and braces.
diff --git a/src/testdir/test_textprop.vim b/src/testdir/test_textprop.vim
index 3203305..c29c10b 100644
--- a/src/testdir/test_textprop.vim
+++ b/src/testdir/test_textprop.vim
@@ -573,6 +573,13 @@
   call assert_equal('yyyex xyyoxx', getline(1))
   call assert_equal(expected, prop_list(1))
 
+  " Replace three 1-byte chars with three 2-byte ones.
+  exe "normal 0l3rø"
+  call assert_equal('yøøøx xyyoxx', getline(1))
+  let expected[0].length += 3
+  let expected[1].col += 3
+  call assert_equal(expected, prop_list(1))
+
   call DeletePropTypes()
   bwipe!
   set bs&
diff --git a/src/version.c b/src/version.c
index 708f4a8..ec25334 100644
--- a/src/version.c
+++ b/src/version.c
@@ -747,6 +747,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4988,
+/**/
     4987,
 /**/
     4986,