Previously we would always take the first image in a post to use as the
thumbnail. On media-heavy sites, users may want to manually select a
specific image as the topic thumbnail. This commit allows this to be
done via a `|thumbnail` attribute in markdown.
For example, in this case, bbb would be chosen as the thumbnail:
```
```
Adding a video in composer and then continuing to type into it will make the
video element flicker and restart playback on every keystroke, as the preview
is rendered. In certain configurations, this can lead to some performance
problems too.
Onebox already does the same for external videos.
eslint --fix is capable of fix it automatically for you, ensure prettier is run after eslint as eslint --fix could leave the code in an invalid prettier state.
Before this patch, discourse-markdown depended on the modules in its
bundle being defined in a specific order or it wouldn't load properly.
Now, any file in the bundle can export a `priority` const (default 0)
and files will be loaded in order of ascending priority instead. This
allows us to use a bundle packaged in any order we want.
This reverts commit 7d289a4f3e.
Now that 36bad0c31f is in and we have video previews on all platforms, the commit that's being reverted is no longer needed. In the worst case scenario, the video description is clipped under the video poster if the video aspect ratio is other than 16:9. This commit removes descriptions and the custom style for the video elements.
# Conflicts:
# app/assets/javascripts/pretty-text/addon/engines/discourse-markdown-it.js
# test/javascripts/lib/pretty-text-test.js
It's a stop gap – ideally we would generate a thumbnail for uploaded videos. For now, a bit of intentionality in the style and a pinch of context should do.
