another good one to sneak in there... thai zero-width space: U+200B

cant see it, nothing reads it, and it makes everything error. : D

Pretty much any ide will spot that. Maybe you can use it to teach your colleagues not to use a plain text editor.

With the "wonderful" tooling at work, we use Skype for Business. Naturally, that is not the primary place to send around code and configs, but a 1-liner or 2-liner happens.

You can't believe the nonsense it does when you try to copy & paste it. Spaces get turned into non-breaking spaces etc. Looks completely normal when pasted directly into vim on a console, but will give "odd" error messages.

fr*cking rust ruining the fun

Okay fuck you op

Any half-decent editor/IDE/command line tool will scream at you about this; plus there's version control which should help you spot it as well.

IDE users pretending compilers don't exist.

$ guix shell gcc

[env]$ g++ test.cpp 
test.cpp:4:16: warning: `0;' is not in NFC [-Wnormalized=]
    4 |         return 0<U+037E>
      |                ^~~~~~~~~
test.cpp: In function ‘int main()’:
test.cpp:4:16: error: unable to find numeric literal operator ‘operator"";’
test.cpp:4:18: error: expected ‘;’ before ‘}’ token
    4 |         return 0;
      |                  ^
      |                  ;
    5 | }
      | ~

Look ma, no IDE! 😸

chill, satan.

;
;

This is indeed some next-level fuckery.

I don't see a problem

#include <iostream>

#define ; ;;

int main(){
  std::cout << ";\n";
}

There is no wise way to use that information.

But the foolish ones could be entertaining.