TeXlive SVN: Reading diffs online is broken

[Max Chernoff]

Hi Arash, Karl,

On Sat, 2025-01-04 at 14:23 -0700, Karl Berry wrote:
>     Now click on "text changed" for simpleicons.tex:
>     https://svn.tug.org:8369/texlive/trunk/Master/texmf-dist/doc/fonts/simpleicons/simpleicons.tex?pathrev=73294&r1=73294&r2=73293#content
>
> Yes, that should work. Thanks for the report. Happens with any diff,
> e.g, if I go to
> https://svn.tug.org:8369/texlive/trunk/Master/texmf-dist/doc/fonts/simpleicons/simpleicons.tex
> and click on the top "Diff to <previous revision>" I also get the exception.
>
>     I'm not sure if an update was installed or anything
>     else changed during the last couple of weeks.
>
> Indeed, a couple weeks ago the entire viewvc infrastructure was redone
> by Max (note redirect to port 8369). The server was getting killed by a
> constant flood of robot requests for every viewvc url.  Hopefully Max
> will be able to look at it soon, else I will try.

Turns out that I didn't have /usr/bin/diff installed in the ViewVC
container, so when it tried to diff a file, it unsurprisingly failed.
I've now installed a diff binary in the container image, and it seems to
work now.

Thanks for the report,
-- Max