bug#68428: 29.1.90; info-xref-tests fails

[Eli Zaretskii]

> Date: Sat, 13 Jan 2024 17:08:28 +0100
> From:  Michael Albinus via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> 
> --8<---------------cut here---------------start------------->8---
> # make -C test info-xref-tests
> Test info-xref-test-emacs-manuals condition:
>     (ert-test-failed
>      ((should
>        (string-match-p " [0-9]\\{3,\\} good, 0 bad"
>                      (buffer-substring-no-properties ... ...)))
>       :form
>       (string-match-p " [0-9]\\{3,\\} good, 0 bad" "done, 0 good, 0 bad, 0 
> unavailable")
>       :value nil))
>    FAILED  1/5  info-xref-test-emacs-manuals (0.266785 sec)
> --8<---------------cut here---------------end--------------->8---
> 
> I've tried to bisect, but the problem persists back to 2021 (commit
> 4e77177b06 from  Fri Dec 31 23:17:28 2021 +0000). I didn't try
> further. Instead, I suspect that the *.info format has changed
> slightly.

No, it's a bug introduced by a recent commit, d58d0fa52.  I fixed it
now on the emacs-29 branch.  (Not sure why you saw the problem back in
2021, the bad cross-reference didn't exist then, AFAICT.)

Btw, I have no idea why this test is in the test suite: it basically
tests our manuals, not the code.