Ctrl-K and Ctrl-U in nano, a sane editor that does not hate you

Just switch to visual mode and select the text and yank it.

Press v where you want to start the selection from (switches to visual mode), hjkl (or arrow keys) to move the cursor to the end, then you can yank it from there. It'll highlight what you're selecting just like you're using your mouse, but you're using the keyboard.

If you want to get really fancy there are 3 different kinds of visual mode, but lower case is the most often one that I use because it's char by char, V is line by line, Ctrl+v is "block" (you can select chunks across several lines omitting things at the beginning or end of lines).

Ctrl+V to do the block mode is nice if you need to edit the same part of several lines that all line up vertically, you just Ctrl+v, jk to select the lines, then I (shift+i) to insert on all those lines (if you're in vim you can delete things in insert mode also, if you're in vi you'll need to delete first then insert)

I've been using vim as my primary text editor and IDE for near a decade. I forgot that this was a thing so, I've been using visual mode like a peasant.

The real question is why you're torturing yourself by manually fixing that stuff? Don't you terraform your Ansibles?

Steve Rogers: Big man in a suit of armour. Take that off, what are you?

Tony Stark: Genius, billionaire, playboy, philanthropist.

Tony was being snarky, but he's not wrong about the suit being just an extension. Yes, it's important to his abilities, otherwise he wouldn't have needed it from the beginning in the cave. But it's also not a crutch, as Ironman 3 showed and taught him, and he's trying to show Peter that it begins with the person.

Also keep in mind what he said to Peter in this same scene - when Peter said he just wanted to be like Tony, Tony comes back and says yeah, and I wanted you to be better. Tony knows that Peter truly doesn't need the suit because he is that powerful, it's just once again an extension that enhances those abilities, and if Peter thought it was the suit that made him special he wouldn't grow.

Stark made the suit with no help. He doesn't need a specific suit because he has the skill to invent whatever he may need.

At this point, Peter can't make himself a suit like that, so if he is nothing without it, he can't respect the power it brings. But he isn't nothing without it, which is what Stark is trying to teach him: not to rely on power of others.

Take away the suit, and Stark is still the guy who made the suit.

Not at all.

He's a billionaire genius playboy philanthropist.

The suit is merely a product of his true power

Wasn't this the plot of Iron Man 3?

does this suggest that copy/paste from the terminal is broken by design and we need find a better way?

And if you enable the mouse while line numbers are set to be displayed, you can highlight multiple lines without needing to include the line numbers when you paste it later.

Or just :set mouse=a if your terminal emulator was updated in the past decade. gVim has nothing to offer anymore, except that it bundles its own weird terminal emulator that doesn't inherit any of the fonts, themes, settings or shortcuts of one's default terminal. Blegh.

Also if you're not going to leverage Vim's main feature and just want to click around on stuff, just install VSCod(e|ium), which is genuinely amazingly good.