@ command parsing conflicts with chatting about literal Java annotations, Python decorators, C# verbatim strings, etc.

[senorflor]

Problem

Steps to reproduce the issue

1. Type any code that includes a @ symbol, e.g. @SomeAnnotation in Java @Decorator in Python, @instance_var in Ruby, etc.
2. Observe special syntax highlighting from @ character onwards, e.g.
3. Type enough characters so that word is not in the command picker, then Spacebar or Tab
4. Token starting at @ is deleted

Expected behavior

3. Either:

• Once the identifier was no longer in the command list, I would expect the token to lose syntax highlighting and to be left intact, allowing entry of such code elements into chat with the underlying service/model.
• Alternately, I would expect some combination of escape characters, e.g. `@backtick_fencing` or \ prefixing, to allow the entry of @IdentifiersLikeThis without command parsing.

System details

• OS: MacOS 14.5
• Tested environment:
  • Web (Demo app)
  • VSCode Amazon Q Chat
  • JetBrains IntelliJ Amazon Q Chat
• Enviroment extension version (if applicable):
• Enviroment is remote