Fix adding double brackets, quotes and newline indentation

[TheAyes]

So I'm a bit intrigued since it's been like this for quite a while and it seems noone is noticing.

When writing nix expressions in (my case) intellij, I also have to manually place both braces and reindent the newline.

Let's see what I mean...

I have this line right here and would like to add some settings

The obvious next step is to open a set or array of attributes with a brace or bracket, but upon doing so, only the one I actually entered is being placed.

Usually in any other language (ts for example) it would place both, the opening and closing bracket and put the cursor in between.

Next would be to insert a newline to add several properties to that list. upon doing that I'd expect the cursor to be on the next line aswell as one indent further in. but the indenting seems to be missing out.

And while these are two very minor issues, they really add up the longer you use it. Especially when using other languages where this actually works as it's supposed to.

[JojOatXGME]

I have noticed the issue as well, but haven't spent the time to investigate how to fix it. I will spend a bit of time this weekend to search about how to address this via the IntelliJ Platform Plugin SDK. Maybe there is some easy solution. Otherwise, I am also always happy about contributions. 😄

[TheAyes]

This might be helpful in figuring it out: https://intellij-support.jetbrains.com/hc/en-us/community/posts/115000393430-Auto-closing-braces-in-a-custom-language-BraceMatcher-not-working