Index: src/memline.c
===================================================================
--- src/memline.c	(revision 57762)
+++ src/memline.c	(working copy)
@@ -1662,7 +1662,8 @@
 	}
 	else
 	    MSG(_("Recovery completed. Buffer contents equals file contents."));
-	MSG_PUTS(_("\nYou may want to delete the .swp file now.\n\n"));
+	if (vim_strchr(p_cpo, CPO_PRESERVE) == NULL)
+	    MSG_PUTS(_("\nYou may want to delete the .swp file now.\n\n"));
 	cmdline_row = msg_row;
     }
 #ifdef FEAT_CRYPT
@@ -1681,7 +1682,8 @@
     {
 	if (hp != NULL)
 	    mf_put(mfp, hp, FALSE, FALSE);
-	mf_close(mfp, FALSE);	    /* will also vim_free(mfp->mf_fname) */
+	/* PR-3936063: In POSIX preserve mode, delete the file after recovery */
+	mf_close(mfp, (vim_strchr(p_cpo, CPO_PRESERVE) != NULL));    /* will also vim_free(mfp->mf_fname) */
     }
     if (buf != NULL)
     {