Syntax Highlighting for custom type hints fails after linebreaks in parameter list

[0x0ACB]

Tested versions

4.2.1

System information

Windows 10, Godot 4.2.1, Gles3 compatibility

Issue description

When adding typehints to function declarations the highlighting stops working if linebreaks are added:

Steps to reproduce

Write a function with type hints for some custom types. Add linebreaks in the parameter list

Minimal reproduction project (MRP)

[Mickeon]

This has been not been fixed in master (currently 4.3).

Custom type hints, it's worth noting. It seems like #86176 does not handle this edge-case (CC @dalexeev).

[dalexeev]

This is difficult to fix without a major refactoring of the highlighter. For each new line, the context is lost (with the exception of code regions).

[0x0ACB]

Wouldn't it make sense to keep the context for the current statement atleast? I.e. if inside brackets you dont discard on linebreak.