I was just trying to make a point with the only N.E.Asian language I know anything about.
If the Japanese had used 讓 in a programming language, someone somewhere would have added 让 as an alias, which would have quickly spread. As for 井, it looks like # , which I call "hash"; again, it might have spread.
Tone of voice doesn't translate well into text---I wasn't picking on you. I was just being a nerd.
But just to be irritating, I don't think anyone would've added the alias, as inputting a kanji from an IME is as simple as choosing it from a list---and the one you want (regardless of complexity) is usually the first one on the list. It would make more sense if the language was handwritten. I heard somewhere that Donald Knuth writes his software by hand before inputting it, but I'm pretty sure he's an exception.
If the Japanese had used 讓 in a programming language, someone somewhere would have added 让 as an alias, which would have quickly spread. As for 井, it looks like # , which I call "hash"; again, it might have spread.