> For example, old links like:
>
>         http://redmine.ruby-lang.org/issues/show/2962
>         http://redmine.ruby-lang.org/issues/show/4338
>
> do not work anymore and give me 404 (they used to redirect to
> to "https://bugs.ruby-lang.org").
>
> When I try updating to "https://bugs.ruby-lang.org",
>
>         https://bugs.ruby-lang.org/issues/2962
>         https://bugs.ruby-lang.org/issues/4338
>

It's feature changes in redmine 3. /issues/show/:id is only works redmine 2.
I'm going to implement to redirection this.

> It gives 403 errors, even if I am logged in (as normalperson).
> Newer bugs do not seem to exhibit this problem, and I can
> view https://bugs.ruby-lang.org/issues/10831 without logging in.
>
> What is happening here?  Thanks.

because these project is archived, I unlocked their.

-- 
SHIBATA Hiroshi shibata.hiroshi / gmail.com
http://www.hsbt.org/