On Sat, 16 Sep 2017 22:42:36 +0100, Tim Streater
wrote:

In those four situations, what does the extraneous angle brackets do for
your newsreader?

Now see which of those four work when you click on them.

Thanks Tim for bringing up that quick test for my newsreader on Windows.

The strangest things happened, that I don't have an explanation for.

I doubleclicked on each of the 4 quoted URIs with the following results.

I maybe should note that my default Windows 10 "installed browser" is
Opera, even though I generally use the Tor Browser for browsing, so it
brought up Opera each time I doubleclicked on the URIs (because Windows 10
apparently can't default to a portable browser).

I also have Opera set up to delete all browsing data between sessions:
START PAGE = opera://settings/clearBrowserData

For each of the four tests, I closed the Opera browser beforehand so that
Opera would have nothing in the cache (as I have Opera set up in full
privacy mode so that it remembers nothing between sessions - and even
removes the user-specific VPN ID although that's currently a manual
process).

Not only was Opera using VPN but I was also on a free public VPN server at
the same time (as I'm always on VPN, either singly or doubly) so it was
rather slow (a few seconds) which worked out well and to my advantage
because I could easily see what was happening with the URIs.

1. Doubleclicking on the first quoted URI brought up Opera with
the seemingly truncated URI of:
"blogs.windows.com/windowsexperience/2017/08/23/announcing-windows-10-in"
And yet, then it automatically opened the correct URI of:
"blogs.windows.com/windowsexperience/2017/08/23/announcing-windows-10-insider-preview-build-16273-pc/"

2. Same as above, only with a single character difference of:
"blogs.windows.com/windowsexperience/2017/08/23/announcing-windows-10-i"
And yet, it still brought up the correct URL after a moment or two
(I was on double VPN so it was a bit slow which worked to my advantage):
"blogs.windows.com/windowsexperience/2017/08/23/announcing-windows-10-insider-preview-build-16273-pc/"

3. Same as #1 above.

4. Same as #2 above.

Since all four quoted URIs worked just fine in Opera under double VPN when
I doubleclicked on them, what were we expecting to happen?