27 May
2020
27 May
'20
10:58 p.m.
Thanks. I think the additions of (r<>null) are no-op thus can be removed. (It does no harm, though.) I wonder if there is still some possibility of uninitialized save_tail (which is 0, not null). Thanh also committed some tests in <pdftex>/tests/14-*. Maybe you could add or change the tests to exhibit the uninitialized save_tail problem? I defer on any changes to you and Thanh ... --thanks much, karl.