There are propositions to add a single-quote-double-quote switch
(pythongh-90630), so to avoid hiccups of people passing `force` as a
positional and it being used for the single-double switch, we make
kwargs kwargs-only.

Test special cases of strings that don't need quoting, do need quoting,
do use `force`, don't use `force` etc. I've tried to be exhaustive.

…to `shlex.force`

Co-authored-by: Bartosz Sławecki <bartosz@ilikepython.com>

The comments for why these tests exist can always be found in the git history
Co-authored-by: Bartosz Sławecki <bartosz@ilikepython.com>

Missed from last commit

Intended for another branch shlex-quote-typeerror
Co-authored-by: Bartosz Sławecki <bartosz@ilikepython.com>

…view
Show off the default behavior as `force=False`

Try not to use don't and we're and should've etc apostrophes.

Add test to ensure string with single quote inside it (without which the
string wouldn't need quoting) is quoted even though `force=False`.

jb2170 deleted the shlex-quote-force branch

…ython#148846)
There are propositions to add a single-quote-double-quote switch
(pythongh-90630), so to avoid hiccups of people passing `force` as a
positional and it being used for the single-double switch, we make
kwargs kwargs-only.
Co-authored-by: Bartosz Sławecki <bartosz@ilikepython.com>