Eli Zaretskii <eliz@gnu.org> writes:

>> * lisp/progmodes/etags.el (visit-tags-table-buffer): Save the current
>                                                                 ^^^^^^^
> You meant "current buffer", I presume.

Whoops, yes.

> Do etags-tests.el still pass after this change?

Yep, all 2 of them.

> If so, would it be possible to add a test for this bug?

Okay, the following basically works.  Although without the patch, the
test doesn't fail cleanly, it rather gets stuck waiting for input (the
TAGS table filename).