Don't languages generally tell you about potential look-alike characters specifically for this reason?
this post was submitted on 17 Jul 2023
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Found Satan
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Individuals displaying mischievous, spiteful, or teasing behavior in a playful manner, rather than engaging in genuinely cruel actions.
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The code editor I use would say something like syntax error ';', expected ';' and underline the character in red. That might lead to some head scratching as apparently the Greek character is literally the same, but with a different Unicode value.
I'm talking about when you try to run/compile code, not in the editor.
You're fucking diabolical
#DEFINE TRUE (__LINE__ % 100)
The real Satan is always in the comments
How this plays out in reality:
"This line at this character is giving me a syntax error... I'll just delete and rewrite it, maybe there's a stray whitespace. Oh, it runs now. Weird. Whatever."
While I imagine this is typically true, I once spent a couple hours on something like this.
spoken like someone who hasn't been bitten by codepoints before
Or you would spot the changed line in git immediately and revert it