Patch by Francisco Martin Brugue.

The macro was introduced in #12724.

Fix closes Issue10087 -  fixing the output of calendar display in the html format. Patch by Chris Lambacher. Test Contributed by catherine.

A reminder: distutils only gets bug fixes.  Cosmetic changes, especially
in tests, are not worth the time spent, and can even make future merges
of bugfixes a bit less easy.

I simplified the quote code to use a regex instead of a loop+test when I
moved pipes.quote to shlex in 5966eeb0457d; Ezio Melotti pointed out
that my regex contained redundant parts (now removed) and allowed
non-ASCII characters (now disallowed).

I think common UNIX shells don’t quote non-ASCII characters, but there’s
no harm in doing so.  We’ll see if users request a change.

That pipes.quote thinks all non-ASCII characters need to be quoted may
be a bug, but right now I’m committing this test to make sure I haven’t
introduced a behavior change in 3.3 when I simplified the code to use a
regex (in 5966eeb0457d).