enh(scala) fix triple quoted string

[joshgoebel]

Resolves #2986

Checklist

• Added markup tests, or they don't apply here because...
• Updated the changelog at CHANGES.md
• Added myself to AUTHORS.txt, under Contributors

[toshetah]

Basically the main change I see here is that you removed the relevance, and that you changed the order. Can you please explain what do those changes do? Next time I might just contribute it myself :)

[joshgoebel]

Well if " matches first that breaks everything, so we have to match """ first... and the relevance is a much longer explication... find the thread on huge relevance and read it for a start for more thoughts... 10 is just too high for something that is shared by several languages now, so I removed the huge relevance bump.

The sequencing is what fixes the issue.

[toshetah]

I'd add another test of multi line string:

val multiLineString =
  """aaa
    |ddd
    |sdfa""".stripMargin

should produce:

aaa
ddd
sdfa

and:

val multiLineString =
  """aaa
    |ddd
    |sdfa"""

should produce:

aaa
    |ddd
    |sdfa

Code run at Scastie.

[joshgoebel]

If you wanted to contribute additional tests to the project (expanding on strings.txt) that'd be great... long-term it'd be nice to test all the different types of strings, escaping of special chars, etc...

[joshgoebel]

I'd add another test of multi line string:

Of course our parsing engine doesn't care about the how the string is interpreted, we just highlight it. So your last two examples are irrelevant in our context - as far as I can tell. The highlighted is the same in both cases, regardless of what the end result it inside the runtime.