Bug: Markdown reference links need to always be single-line

[orta]

Prettier 1.13.5

Effectively when prettier meets a reference link + url that's longer than the prose-wrap it will move the link to the next line. This breaks the markdown.

Playground link

--prose-wrap always

Input:

Again, an interesting trade-off. You can only get logs when you're looking for them, as opposed to when a problem
may actually have occurred. There's things I can do to work around this also, keep an installation's logs around for
a day in Peril

[ga]: https://blog.github.com/2016-09-14-a-whole-new-github-universe-announcing-new-tools-forums-and-features/#integrate-seamlessly-with-github
[nosqliscool]: https://www.infoworld.com/article/2990184/database/nosql-simply-isnt-hip-anymore.html
[probots]: https://probot.github.io

Output:

Again, an interesting trade-off. You can only get logs when you're looking for them, as opposed to when a problem
may actually have occurred. There's things I can do to work around this also, keep an installation's logs around for
a day in Peril

[ga]: 
  https://blog.github.com/2016-09-14-a-whole-new-github-universe-announcing-new-tools-forums-and-features/#integrate-seamlessly-with-github
[nosqliscool]: 
  https://www.infoworld.com/article/2990184/database/nosql-simply-isnt-hip-anymore.html
[probots]: https://probot.github.io

Expected behavior:

Again, an interesting trade-off. You can only get logs when you're looking for them, as opposed to when a problem
may actually have occurred. There's things I can do to work around this also, keep an installation's logs around for
a day in Peril

[ga]: https://blog.github.com/2016-09-14-a-whole-new-github-universe-announcing-new-tools-forums-and-features/#integrate-seamlessly-with-github
[nosqliscool]: https://www.infoworld.com/article/2990184/database/nosql-simply-isnt-hip-anymore.html
[probots]: https://probot.github.io

[ikatyang]

This behavior is currently controlled by --prose-wrap, see #3531.

I'm not sure what should we do here since this formatting is valid in the CommonMark spec.

[orta]

Interesting!

Taking the example from the test case, this is likely an issue with the non-commonmark md renderer I'm using (it's a 4-5 year old ruby app) - as the examples in #3531 work fine in GitHub ( see below )

just-url url-with-short-title url-with-long-title long long-with-title

So I'm going to close as not a bug, and the implementation is correct - thanks @ikatyang