Issue: FrontMatter changes front matter line length

[davidsneighbour]

Describe the bug
It appears the frontmatter functionality that updates the dates on save is also formatting the frontmatter. I have a line with the length of >80, but below 120 and after each save that line is ripped onto two lines. Now, while this is done properly (yaml, second line of a parameter is indented by 2 extra spaces) it might/will break other parsers that want to go over frontmatter. It would be nice to be able to either configure it to a certain line length or be able to disable it.

I am not 100% sure that it is FrontMatter doing this, but I disabled all Markdown extensions, eslint and prettier and it still cut the line in two, after disabling frontmatter this stopped.

sample:

---
date: 2023-02-26T21:27:05+07:00
publishDate: 2023-02-26T21:27:05+07:00
lastmod: 2023-02-27T17:20:47+07:00
resources:
  - src: header.jpg
    title: Photo by [Todd Quackenbush](https://unsplash.com/@toddquackenbush) via [Unsplash](https://unsplash.com/)
---

ends up as:

---
date: 2023-02-26T21:27:05+07:00
publishDate: 2023-02-26T21:27:05+07:00
lastmod: 2023-03-01T18:50:15+07:00

resources:
  - src: header.jpg
    title: Photo by [Todd Quackenbush](https://unsplash.com/@toddquackenbush) via
      [Unsplash](https://unsplash.com/)
---

[estruyf]

Thanks @davidsneighbour, found the issue. It seems to be caused by the YAML parser. I did an update to it, and now it should not break your lines anymore.

Let me know if this fixed it for you in the beta version.

[davidsneighbour]

Yes, that fixes it. Thank you :)

[davidsneighbour]

I hate to be of bother ;) But now it removes all empty lines that I use just to keep an overview over the front matter. That is ok and valid and I think the initial issue is worse than that, but maybe it's easy to save empty lines the front matter?

(Or it's maybe another issue? Still using the Beta Version)

[estruyf]

No worries, we need to get this right. The issue is in one of the YAML parsers, one has a setting to set a line length, but seems to remove other things, and the other one keeps things in place but doesn't have a line length setting.

[estruyf]

Just saw that with the latest version of the YAML parser, there is a line width option. I just updated the dependency and made the change. This gets the old experience back + the fix for the line width.

[davidsneighbour]

It appears this did not make it into 8.4.0 or got somehow broken again. Saving markdown files removes empty lines currently in v8.4.0. The line length is working.

edit: not sure if a closed issue arrives on your notifications, so I'll ping you @estruyf ;)