On 18Jan2022 08:43, Paul Bryan <pbr...@anode.ca> wrote:
>+1
>
>"x-" prefix indicates ad hoc (unofficial), not deprecated.
>
>I agree, an official MIME type should be preferred over an unofficial
>one.
Maybe, but I disagree about the proposed solution. There are
circumstances where you want a specific MIME type guess, and the best
way to do that is the apply a specific ordering to your mime.types file
so that the desired type comes first, and is found first.
And looking at milahu's example, that's exactly what was there:
application/javascript js
application/x-javascript js
It would be reasonable and generally desireable to take the first one.
The problem with saying "oh, let's examine the types and exclude or
deprioritise the ones we don't like such as x-*" as that removes control
from the user (the caller of mimetypes.guess_type() and the author of
/etc/mime.types). It embeds fixed policy _inside_ mimetypes.guess_type()
where it can't be turned off without growing a heap of weird mode flags.
The better fix it to honour the order of the mime.types file as
_expressing_ policy, which is what the OP already has - they just don't
have guess_type() doing it that way.
Arguments for embedding _policy_ inside guess_type() will be met with my
standard example: the ancient Netscape proxy config had regexp based
redirect rules, not uncommon. But Netscape prioritised these by the
length of the regexp instead of the config file ordering. Insanity
abounded with regexp wackiness purely to make some rules longer than
others.
Cheers,
Cameron Simpson <c...@cskk.id.au>
_______________________________________________
Python-ideas mailing list -- python-ideas@python.org
To unsubscribe send an email to python-ideas-le...@python.org
https://mail.python.org/mailman3/lists/python-ideas.python.org/
Message archived at
https://mail.python.org/archives/list/python-ideas@python.org/message/4P6G7WKRZR5GR2ZLRGO5QI3OCH7SEVVI/
Code of Conduct: http://python.org/psf/codeofconduct/
