Can you make zsh autocorrect smarter

Well, don't use the correct_all option if you don't like what it does.

FWIW, it is NOT set by default. There's a popular configuration on the net (I won't say which) that thinks for some reason that it's a fun idea to set that option for everybody... yet, it doesn't make sense for many MANY applications, though. It makes every command line argument subject to filename spelling correction... That's insane.

To cut a long story short: Only setopt correct and NOT setopt correctall.

If you need help with the spelling of filenames, zsh's completion system can help you with its _approximate and _correct completers. Details can be found in the zshcompsys(1) manual page.

There is no feature to capture the output from the screen on most terminal emulators. I seem to recall the author of xterm (the “reference” terminal emulator) stating that it would be difficult to implement. Even if that was possible, the shell would have to keep track of where the last prompt had been.

So you won't escape having to run the command again, unless you use a terminal-specific, manual mechanism such as copy-pasting with the mouse in xterm or with the keyboard in Screen.

It would be highly impractical for the shell to automatically capture the output of commands, because it cannot distinguish between commands that have complex terminal and user interactions from commands that simply output printable characters.

You can rerun the command and capture its output. There are various ways to do each. To rerun the command, you can use:

• !! history substitution — most convenient to type;
• fc -e -, which can be used in a function.

To capture the output, you can use command substitution, or a function like the following:

K () {
  lines=("${(f@)$(cat)}")
}
!! |K

This sets the lines array to the output of the command that's piped into it.