This commit updates the wording related to topic-permalink in
`/api/message-formatting` to clarify that the condition applies
when a topic has no messages, not when the topic name is empty.
Also, it reorders examples so that similar input formats are
grouped together, improving readability.
This commit converts the links generated by the markdown
of the "#-mention" of topics to permalinks -- the links containing
the "with" narrow operator, the operand being the last message
of the channel and topic of the mention.
Fixes part of #21505
This commit adds support for empty string as a valid topic name
in syntax for linking to channel messages.
The server stores it after empty string is replaced with
`realm_empty_topic_display_name` and wrapped with an <em> tag.
The web client parses the rendered_content and updates
the topic_name part in the HTML with topic_name in user's language
+ wraps it in a <span> tag with 'empty-topic-display' css class.
If the content-type of the image is not in INLINE_MIME_TYPES, then we
do not expect browsers to be able to display it. This behaviour is
particularly confusing because the thumbnail will render properly,
since that will be in the more widely-supported WebP format, but the
lightbox will show a broken image.
In these cases, generate a high-resolution (4032x3024) "thumbnail"
which clients can choose to use instead. This thumbnail format is not
in the listed in the server's advertised thumbnail size list, because
it is not reliably generated for every image.
The transcoded thumbnail format is set on the `img` tag if it is
generated, and the original content-type is always passed to the
client, so it can decide how or if to render the original image. This
content-type is as the _original uploader_ specified it, so may be
incorrect.
The transcoded image is not animated, even if the original was. HEIC
files can nominally be animated, but in testing libvips was not able
to correctly recognize them as such. TIFF files are parsed as being
"animated," with one page per frame; this is of dubious utility, so
we merely transcode the first page. Always generating a static
transcoded image serves to also limit the computational time spent.
THUMBNAIL_OUTPUT_FORMATS is switched to be a tuple to ensure that it
is not accidentally mutated.
Note that the link in zulip_update_announcements.py is not updated
so that the content in the source code reflects what users actually
received in the update announcement message.
Modern browsers respect the EXIF orientation information of images,
applying rotation and/or mirroring as specified in those tags. The
the `width="..."` and `height="..."` tags are to size the image
_after_ applying those orientation transformations.
The `.width` and `.height` properties of libvips' images are _before_
any transformations are applied. Since we intend to use these to hint
to rendering clients the size that the image should be _rendered at_,
change to storing (and providing to clients) the dimensions of the
rendered image, not the stored bytes.
Updates `.md` files in api_docs/ to use "stream" instead of "channel"
for descriptive text, with the exception of the API changelog file.
Part of stream to channel rename project.
Adds "channel" to the `stream_wildcards` frozenset for stream
wildcard notifications on the backend/server.
Updates frontend/web-app to handle "channel" as the other stream
wildcards are handled in the typeahead and composebox modules.
Updates the API version and documentation for the addition of
"channel" as a wildcard mention. But does not change any of the
functionailty of (or deprecate) the "stream" wildcard at this
point.
Part of project to rename "stream" to "channel".
Adds a "Message formatting" article to the API documentation. To
start, the article is a changelog of updates to markup features for
messages, with the idea being that it can be expanded to further
describe and document Zulip's markup features in future iterations.
