zsh variable editing

Lets say I made a typo in an important environment variable and I wanted a quick fix, just to see if yes, that was indeed why my application wasn't working.

$ echo $RAILS_ENV
> porduction
# ^^^ YIKES ^^^

The Z shell has a builtin program called vared that helps you edit an existing environment/shell variable.

$ vared RAILS_ENV
porduction

Now you are in an editing context, you can edit the value with all your configured command line editing tools. Fix the error, hit RETURN, and you're good!

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