(Feature Request) Enable the use of shebangs

[eliminmax]

On Unix and Unix-like systems (such as macOS and Linux), beginning a script with #! followed by a path to an interpreter and arguments tells the system to use that interpreter to run the script - that's why, as an example, many python programs start with the line #!/usr/bin/env python.

The simplest way to implement this is to allow comments to start with # in addition to //.

I was able to get this working with only minor additions to src/lexer.rs - pull request will follow shortly.

[RocketRace]

I see there's two plausible solutions to this:

• Your idea which is to allow #-based comments
  • It's a language change, so it would be nice to document on the esolangs page, possibly as an optional feature
• Some command-line flag (like -x) that skips the first line of the source file
  • Mutually exclusive with -c
  • Not a language change, but this is the de facto implementation anyways so that doesn't actually matter that much.

Either is acceptable for me, but I don't use shebangs often enough to have a perspective on what's preferable so I'd like some opinions.

Now I admit I haven't looked at this codebase for a long time. Since this was my first real Rust project, I also apologize for you having to skim through it 😆

[eliminmax]

I think that a command-line option would be a good idea, and some languages do it. That said, I don't know how you'd implement it in this codebase, but I might give it a try.