Also change a few other things to use it, as noted in CHANGELOG.md.
TODO:
- Write a couple of tests: updated field, last_updated template variable
One slight open questions: should `updated` default to the value of
`date` rather than to None? Then pages with `date` could safely assume
`updated`.
This includes several breaking changes, but they’re easy to adjust for.
Atom 1.0 is superior to RSS 2.0 in a number of ways, both technical and
legal, though information from the last decade is hard to find.
http://www.intertwingly.net/wiki/pie/Rss20AndAtom10Compared
has some info which is probably still mostly correct.
How do RSS and Atom compare in terms of implementation support? The
impression I get is that proper Atom support in normal content websites
has been universal for over twelve years, but that support in podcasts
was not quite so good, but getting there, over twelve years ago. I have
no more recent facts or figures; no one talks about this stuff these
days. I remember investigating this stuff back in 2011–2013 and coming
to the same conclusion. At that time, I went with Atom on websites and
RSS in podcasts. Now I’d just go full Atom and hang any podcast tools
that don’t support Atom, because Atom’s semantics truly are much better.
In light of all this, I make the bold recommendation to default to Atom.
Nonetheless, for compatibility for existing users, and for those that
have Opinions, I’ve retained the RSS template, so that you can escape
the breaking change easily.
I personally prefer to give feeds a basename that doesn’t mention “Atom”
or “RSS”, e.g. “feed.xml”. I’ll be doing that myself, as I’ll be using
my own template with more Atom features anyway, like author information,
taxonomies and making the title field HTML.
Some notes about the Atom feed template:
- I went with atom.xml rather than something like feed.atom (the .atom
file format being registered for this purpose by RFC4287) due to lack
of confidence that it’ll be served with the right MIME type. .xml is a
safer default.
- It might be nice to get Zola’s version number into the <generator>
tag. Not for any particularly good reason, y’know. Just picture it:
<generator uri="https://www.getzola.org/" version="0.10.0">
Zola
</generator>
- I’d like to get taxonomies into the feed, but this requires exposing a
little more info than is currently exposed. I think it’d require
`TaxonomyConfig` to preferably have a new member `permalink` added
(which should be equivalent to something like `config.base_url ~ "/" ~
taxonomy.slug ~ "/"`), and for the feed to get all the taxonomies
passed into it (`taxonomies: HashMap<String, TaxonomyTerm>`).
Then, the template could be like this, inside the entry:
{% for taxonomy, terms in page.taxonomies %}
{% for term in terms %}
<category scheme="{{ taxonomies[taxonomy].permalink }}"
term="{{ term.slug }}" label="{{ term.name }}" />
{% endfor %}
{% endfor %}
Other remarks:
- I have added a date field `extra.updated` to my posts and include that
in the feed; I’ve observed others with a similar field. I believe this
should be included as an official field. I’m inclined to add author to
at least config.toml, too, for feeds.
- We need to have a link from the docs to the source of the built-in
templates, to help people that wish to alter it.
* maybe_slugify() only does simple sanitation if config.slugify is false
* slugify is disabled by default, turn on for backwards-compatibility
* First docs changes for optional slugification
* Remove # from slugs but not &
* Add/fix tests for utf8 slugs
* Fix test sites for i18n slugs
* fix templates tests for i18n slugs
* Rename slugify setting to slugify_paths
* Default slugify_paths
* Update documentation for slugify_paths
* quasi_slugify removes ?, /, # and newlines
* Remove forbidden NTFS chars in quasi_slugify()
* Slugification forbidden chars can be configured
* Remove trailing dot/space in quasi_slugify
* Fix NTFS path sanitation
* Revert configurable slugification charset
* Remove \r for windows newlines and \t tabulations in quasi_slugify()
* Update docs for output paths
* Replace slugify with slugify_paths
* Fix test
* Default to not slugifying
* Move slugs utils to utils crate
* Use slugify_paths for anchors as well
* fix the issue of generating the search index for multiple language
* updat docs for generating the search index for multiple language
* fix failed tests
* add tests for the search index of multiple language
Justification for this feature is added in the docs.
Precedent for the precise syntax: Hugo.
Hugo puts this syntax behind a preference named headerIds, and automatic
header ID generation behind a preference named autoHeaderIds, with both
enabled by default. I have not implemented a switch to disable this.
My suggestion for a workaround for the improbable case of desiring a
literal “{#…}” at the end of a header is to replace `}` with `}`.
The algorithm I have used is not identical to [that
which Hugo uses][0], because Hugo’s looks to work at the source level,
whereas here we work at the pulldown-cmark event level, which is
generally more sane, but potentially limiting for extremely esoteric
IDs.
Practical differences in implementation from Hugo (based purely on
reading [blackfriday’s implementation][0], not actually trying it):
- I believe Hugo would treat `# Foo {#*bar*}` as a heading with text
“Foo” and ID `*bar*`, since it is working at the source level; whereas
this code turns it into a heading with HTML `Foo {#<em>bar</em>}`, as
it works at the pulldown-cmark event level and doesn’t go out of its
way to make that work (I’m not familiar with pulldown-cmark, but I get
the impression that you could make it work Hugo’s way on this point).
The difference should be negligible: only *very* esoteric hashes would
include magic Markdown characters.
- Hugo will automatically generate an ID for `{#}`, whereas what I’ve
coded here will yield a blank ID instead (which feels more correct to
me—`None` versus `Some("")`, and all that).
In practice the results should be identical.
Fixes#433.
[0]: a477dd1646/block.go (L218-L234)
