Proper handing of raw strings in rust

[AndreasArvidsson]

Fixes #2678

Checklist

• I have added tests
• [/] I have updated the docs and cheatsheet
• [/] I have not broken the cheatsheet

[auscompgeek]

Could we also have a test for more hashes, like r##"hello"##?

[AndreasArvidsson]

Could we also have a test for more hashes, like r##"hello"##?

Oh that is valid? I did not add support for that.

[auscompgeek]

Oh that is valid?

Per the language reference (also linked in the issue), yes :)

[AndreasArvidsson]

Oh that is valid?

Per the language reference (also linked in the issue), yes :)

Tree sitter gives us no help here so all those different combinations with hashes is something we need to solve with regex in that case.

[AndreasArvidsson]

Now we support multiple hashes :)