spell check on the command line

[Eric Smith <es@xxxxxxxxxxxx>]

Dear zshellers

I make frequent typos (which I like to blame on my apple
keyboard). These are either in commands themselves or in long
filenames concatenated with underscores as arguments to commands.

(Of course autocorrect in a command could be dangerous, but then
so could a typo).

But especially interesting is a spell check for my
long_filenames_with_useful_tags_as_metadata.pdf

How could I implement and autocorrect function that is run when I
press enter and on suspected spell error beeps and
guesses what I meant and would give me a chance to review the
correction?

-- 
Eric Smith