patch 8.2.1897: command modifiers are saved and set inconsistently

Problem:    Command modifiers are saved and set inconsistently.
Solution:   Separate parsing and applying command modifiers.  Save values in
            cmdmod_T.
diff --git a/src/version.c b/src/version.c
index a1ee33e..cdf0be3 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1897,
+/**/
     1896,
 /**/
     1895,