Bring back the Insert key on Emacs

Back in the olden days, there was an Insert key on Mac keyboards. (There still is on PC keyboards, although in many programs it doesn’t actually do anything anymore.) If you were editing text, you had two different modes, overwrite and insert. If you were in insert mode, then when text was in front of the cursor, typing would insert text. If the | character represents the cursor: banana |crazypants And you typed plaid, you’d get: banana plaid|crazypants This is what you expect in modern editing, right? But, if you were in overwrite mode and did the same thing, you would get: banana plaid|pants Crazy(pants), right? But the thing is, once in a while this is still useful, and it’s basically gone away. The Insert key has become the Help on Mac keyboards; if you have a mechanical keyboard that has an Insert key like I do, it (probably) acts like a Help key. Well, screw that, at least in Emacs. Everybody who uses Emacs can use ^H, or in Emacs parlance C-h, to get help, right? So if you’re…